Terry should mix 29 gallons of the 25% acid solution and 11 gallons of the 80% acid solution
How to determine the amount of each acid to be mixed together?Given: 40% acid and 80% acid solutions
Terry needs 40 gal of a 40% acid solution
Let x represent the amount of the 25% acid solution required in gal
Thus, the amount of the 80% acid solution required will be (40-x) gal
The amount of acid in these solutions is 0.25x + 0.8(40-x)
Since Terry wants exactly 40% or 0.4 of 40 gallons i.e. 0.4×40 gallons
The amount of acid in these solutions will be:
0.25x + 0.8(40-x) = 0.4×40 Solve for x
0.25x + 32-0.8x = 16
0.8x-0.25x = 32-16
0.55x = 16
x = 16/0.55 = 29 gallons
40-x = 40 -29 = 11 gallons
Therefore, the amount of the 25% acid solution required is 29 gallons
and the amount of the 80% acid solution required is 11 gallons. So she should mix 29 gallons and 11 gallons respectively
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Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match the estimated value of each expression with its position on the number line.
Order of the tiles D, C, E, A
The square root of a number:
A square root of a number is a value of a number(other than the original number) that when multiplied by itself gives the original number. A square root of a number will be in the form of a².
Here are some examples of the square root of a number
√4 = 2 [ since 2 × 2 = 4 ]
√9 = 3 [ since 3 × 3 = 9 ]
Here we have
1. √90 - √40
2. (√35 - √42) / (√5 - √6)
3. 2√27 - √48
4. (√54 -√24)/√18 - √8
Each problem can be solved as given below
1. √90 - √40
= √9 × 10 - √4 × 10
= 3√10 - 2√10
= √10 = 3.16227
2. (√35 - √42) / (√5 - √6)
= (√5 × √7 - √7 × √6 ) / (√5 - √6)
= √7 [√5 - √6 ] / (√5 - √6)
= √7 = 2.64575
3. 2√27 - √48
= 2√9×3 - √16×3
= 6 √3 - 4√3
= 2√3 = 3.46410
4. (√54 -√24)/√18 - √8
= (√9×6 - √4×6)/√9×2 - √4×2 )
= (3√6 - 2√6)/3√2 - 2√2 )
= (√6) / √2 )
= 1.73205
The resultant decimal numbers are
3.16227, 2.64575, 3.46410, and 1.73205.
And the order of the decimal numbers is
1.73205 < 2.64575 < 3.16227 < 3.46410
Therefore,
Order of the tiles D, C, E, A
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X
-5
0
The table of ordered pairs shows the coordinates of the two points on the graph of a line. Which equation
describes the line?
y
2
7
a. y=x+7
b. y=x-7
A
C
Please select the best answer from the choices provided
c.
d.
Mark this and return
y = -5x +2
y = 5x + 2
Save and Exit
Next
Submit
The equation of the line that best describes the given table of ordered pair is y = x + 7
Equation of the line:
By using the slope and y intercept of the point, we can calculate the equation of the line as
y = mx + c
here m refers the slope and c refers the intercept.
Given,
Here we have the table of ordered pairs shows the coordinates of the two points on the graph of a line.
Now, we need to find the equation of the line that best suits this one.
In order to find the equation of the table, first we have to calculate the slope and the y intercept of the given table.
But in order to calculate the slope we need the points.
So, the point take has been taken by the table are
=> (-5, 2) and (0,7)
Now, the slope of the line is,
=> m = (0 - (-5))/ (7-2)
=> m = 5/5
=> m = 1
By looking into the point we have identified that the y intercept is 7,
Therefore, the equation of the line is
=> y = 1x + 7
=> y = x + 7
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For f(x) = 9x + 8 and g(x) = 7x, find the following composite functions and state the domain of each.
(a) fog
(b) gof
(c) fof
(d) gog
For the given composite function, then values of
(a) 63x + 8
(b) 63x + 56
(c) 81x + 80
(d) 49x
Composite functions:
An operation where two functions say f and g generate a new function say h in such a way that h(x) = g(f(x)) is known as composite functions.
Given,
Here we have the functions f(x) = 9x + 8 and g(x) = 7x
Now, we have to find the composite function of each.
(a) The composite function is written as,
=> f(g(x)) =f(7x)
=> f(7x) = 9(7x) + 8
=> f(g(x)) = 63x+ 8
(b) The composite function is written as,
=> g(f(x))
=> g(f(x)) =g(9x + 8)
=> g(9x + 8) = 7(9x + 8)
=> g(9x + 8) = 63x + 56
(c) The composite function is written as,
=> f(f(x))
=> f(9x +8) = 9(9x + 8) + 8
=> f(9x + 8) = 81x + 72 +8
=> f(9x + 8) = 81x + 80
(d) The composite function is written as,
=> g(g(x))
=> g(7x) = 7(7x)
=> g(7x) = 49x
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75% of senior SH student wear eyeglasses of those who wear eyeglasses 20% are girls
Answer:
75% - 20% = 55%
Step-by-step explanation:
At Monroe College, 1/2 of the students are enrolled in an art class. Of the students enrolled in an art class, 3/10 are enrolled in a painting class. What fraction of the students at Monroe College are enrolled in a painting class?
Answer:7/10
Step-by-step explanation:
NO LINKS!! Please help me with the Segment Proofs Part 1
Answers in bold
GivenGivenDefinition of midpointTransitive property of equalityAddition property of equalitySimplificationSubstitutionSegment addition postulateTransitive property of equalityDivision property of equality====================================================
Explanation:
Always start the proof with what you are given. It seems silly to repeat the given information, but it's just how all proofs are formed. This is to build from those given statements to lead to what we want to prove on the last line.
The term "midpoint" refers to splitting a segment into two equal smaller pieces. So for instance, if Q is the midpoint of PR, then the pieces PQ and QR are equal. Each smaller piece is half as long as PR.
The transitive property is the idea if A = B and B = C, then A = C. Think of it like substitution. Or you can think of a set of dominoes: A knocks down B, which knocks down C. Therefore A knocks down C.
The addition property of equality is where we go from A = B to A+C = B+C. I've added C to both sides. Adding the same thing to both sides will not change the equation. It keeps things balanced. When going from line 4 to line 5, we added PQ to both sides.
In line 6, we've gone from PQ+PQ to 2PQ.
In line 7, we replace PQ with QR on the right hand side. We use the substitution property here (refer to line 3 where we found PQ = QR)
Line 8 uses the segment addition postulate. If A,B,C are collinear, then AB+BC = AC. The point B doesn't necessarily need to be the midpoint.
Line 9 uses the transitive property again (we combine lines 7 and 8 to lead to line 9).
The final line has us divide both sides by 2 to get what is shown in the table. This is the division property of equality.
------------------------
Shortcut using informal logic:
PQ = QR
QR is half as long as QS
Therefore, PQ is also half as long as QS
Answer:
The last reason for [tex]PQ=\frac{1}{2}QS[/tex] is division property of equality
Step-by-step explanation:
The reason for [tex]PQ=\frac{1}{2}QS[/tex] can be evaluated as follows
For the statement [tex]Q[/tex] is the midpoint of [tex]\overline{PR}[/tex], the reason is given
For the statement [tex]R[/tex] is the midpoint of [tex]\overline{QS}[/tex], the reason is given
For the statement [tex]PQ=QR, QR=RS[/tex] , the reason is definition of midpoint
The midpoint of a line segment is the point that separates the line segment into two congruent parts.
For the statement [tex]PQ=RS[/tex] , the reason is transitive property
Transitive property says that if [tex]a=b[/tex], and [tex]b=c[/tex], then [tex]a=c[/tex]
In this statement [tex]PQ=QR, QR=RS[/tex], then [tex]PQ=RS[/tex]
For the statement [tex]PQ+PQ=PQ+RS[/tex] , the reason is addition property of equality
Addition property of equality says that if [tex]a=b[/tex], then [tex]a+c=b+c[/tex]
For the statement [tex]2PQ=PQ+RS[/tex] , the reason is combining of like terms of algebraic expression
Combining like terms is the process to add or to substract the coefficient of the terms
In this statement combining like terms is at the left side of the equation, [tex]PQ+PQ=2PQ[/tex]
For the statement [tex]2PQ=QR+RS[/tex] , the reason is substitution property
Substitution property of equality says that if [tex]a=b[/tex], then [tex]a[/tex] replaces [tex]b[/tex] in any equation, in this statement [tex]QR[/tex] replaces [tex]PQ[/tex]
For the statement [tex]QR+RS=QS[/tex] , the reason is substitution property and definition of midpoint
In this statement [tex]QR+RS[/tex] replaces [tex]2PQ[/tex], and [tex]QS[/tex] is the sum of two congruent parts [tex]QR+RS[/tex]
For the statement [tex]2PQ=QS[/tex] , the reason is substitution property
In this statement [tex]2PQ[/tex] replaces [tex]QR+RS[/tex]
For the statement [tex]PQ=\frac{1}{2}QS[/tex] , the reason is division property of equality
Division property of equality says that if [tex]a=b[/tex], and [tex]c\neq 0[/tex], then [tex]\frac{a}{c} =\frac{b}{c}[/tex]
In this statement [tex]\frac{2PQ}{2} =\frac{QS}{2}[/tex] or can be reduced into [tex]PQ=\frac{1}{2}QS[/tex]
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The Royal Fruit Company produces two types of fruit drinks. The first type is 55% pure fruit juice, and the second type is 80% pure fruit juice. The company is attempting to produce a fruit drink that contains 65% pure fruit juice. How many pints of each of the two existing types of drink must be used to make 40 pints of a mixture that is 65% pure fruit juice?
Please help this is due soon
Answer:
Okay, so let's make the variable x the 60% juice.
The equation:
0.60(x) + 1(120-x) = 0.7(120)
Multiply both sides by ten for easier calculation:
6x + 1200 - 10x = 840
Put x on one side and the numbers on the other:
-4x = -360
the negatives cancel out...
4x = 360
define x
x = 90
Step-by-step explanation:
2 2/3 + 1 5/8
How do you solve this
How do you change the denominator so you can solve
Answer:25/.2
Step-by-step explanation:
i think this is right
Answer:
The answer would be 4 7/24
Step-by-step explanation:
We can obtain common denominators by multiplying both numerator (top) and denominator (bottom) by the same amount.
The LCM (least common multiple) for your question would be 24, so you would multiply in order to get the fractions to have a common denominator of 24, while keeping the same value.
You have 4,592 grams of a radioactive kind of scandium. How much will be left after 168 days if its half-life is 84 days?
Answer:
1,148
Step-by-step explanation:
In triangle EFG, m∠E = 84.3° and m∠F = 36.4°. Determine the measure of the exterior angle to ∠G.
47.9°
59.3°
121.1°
120.7°
By applying the exterior angle property, the measure of the exterior angle to ∠G in triangle EFG is equal to 120.7°
What is the exterior angle property?In Mathematics, the exterior angle property can be defined as a theorem which states that the measure of an exterior angle in a triangle is equal in magnitude to the sum of the measures of the two remote or opposite interior angles of that triangle.
How to determine the value of ∠G?In order to determine the value of ∠G in triangle EFG (ΔEFG), we would have to apply exterior angle property. Mathematically, the exterior angle property can be used to model triangle EFG (ΔEFG) and this is given by:
m<G = m<E + m<F
Substituting the given parameters into the formula, we have;
m<G = 84.3° + 36.4°.
m<G = 120.7°.
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Find the measure of prq if p is 33, r is 17x + 1 and q is 10x + 1
The expression we get after measuring prq is 5610x²+ 891x+33.
Given that,
p is 33, r is 17x+1 and q is 10x+1
We have to find the measure of prq.
Take the,
p is 33, r is 17x+1 and q is 10x+1
Now,
prq
By multiply we get an expression
Multiplying each term to each other.
(33)(17x+1) (10x+1)
1st multiply 33 to 17x+1
(561x+33) (10x+1)
Now multiply each 561x with 10x+1 and 33 with 10x+1
5610x²+ 561x+ 330x+33
Adding 561x and 330x
5610x²+ 891x+33
Therefore, The expression we get after measuring prq is 5610x²+ 891x+33.
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An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 100 grams of an alloy containing 35% copper with 60 grams of an alloy containing 55% copper.
Answer the questions below. Do not do any rounding.
(a) How many grams of copper are in the resulting mixture?
(b) What percentage of the resulting mixture is copper?
Answer:
(a) 68 grams
(b) 42.5%
Step-by-step explanation:
You mix 100 g of 35% copper with 60 g of 55% copper to form an alloy. You want to know the number of grams and the percentage of copper in the mixture.
CopperThe total amount of copper is ...
0.35·(100 g) +0.55·(60 g) = 35 g + 33 g = 68 g
There are 68 grams of copper in the resulting mixture.
PercentageThe percentage of copper in the mixture is ...
(68 g)/(100 g + 60 g) × 100% = 68/160 × 100% = 42.5%
The resulting mixture is 42.5% copper.
Kala the trainer has two solo workout plans that she offers her clients: Plan A and Plan B. Each client does either one or the other (not both). On Wednesday there were 3 clients who did Plan A and 5 who did Plan B. On Thursday there were 9 clients who did Plan A and 7 who did Plan B. Kala trained her Wednesday clients for a total of 6 hours and her Thursday clients for a total of 12 hours. How long does each of the workout plans last?
Kala the trainer lasted 0.75 hours for each of the work out.
How to find out how long each of the work out lastedLet A represent plan A and B for plan B
On Wednesday there were 3 clients who did Plan A and 5 who did Plan B for a total of 6 hours. this is represented mathematically as
3A + 5B = 6 hours
On Thursday there were 9 clients who did Plan A and 7 who did Plan B for a total of 12 hours. this is represented mathematically as
9A + 7B = 12 hours
hence we have two system of equations with two unknown
9A + 7B = 12 hours
3A + 5B = 6 hours
solving the equation gives that A = B = 0.75 hours = 45 minutes
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Tyshawn took a taxi from his house to the airport. The taxi company charged a pick-
up fee of $2.50 plus $3.50 per mile. The total fare was $79.50, not including the tip.
Which equation could be used to determine m, the number of miles in the taxi ride?
3.5m + 2.5 = 79.5 is the equation that could be used to determine m, the number of miles in the taxi ride.
Given in question,
Pick-up fee = $2.50
Fee per mile = $3.50
Total fare = $79.50
Let the no. of miles = m
Fee for m miles = 3.50m
Equation, 3.50m + 2.50 = 79.50.
Hence, the equation is 3.50m + 2.50 = 79.50.
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The area of a parallelogram is 780sq cm if the length of one side is 26cm find the corresponding height.
20 points
Step-by-step explanation:
area of parallelogram = length × height
780 = 26 × height
height = 780/26 = 30cm
PLEASE HELP ASAP, PLEASE HELP ASAP
Determine whether the figure is a parallelogram using the distance formula.
Q\left(-10,-2\right),R\left(1,-1\right),S\left(1,-7\right),T\left(-11,-8\right)Q(−10,−2),R(1,−1),S(1,−7),T(−11,−8)
The distance formula used to determine if the figure is a parallelogram indicates;
The length of QR ≈ 11.0 and the length of ST ≈ 12.0. The length of QS ≈ 12.1, and the length of RT ≈ 13.9. Therefore, QRST is not a parallelogramWhat is a parallelogram?A parallelogram is a quadrilateral that have two pairs of facing sides that are parallel and of the same length.
The length of the sides can be found by using the formula for finding the distance between two points on the coordinate plane as follows;
The distance between the points (x₁, y₁) and (x₂, y₂) is d = √(x₂ - x₁)² + (y₂ - y₁)²
The length of QR = √((1 - (-10))² + (-1 - (-2))²) = √(122) ≈ 11.0
Length of ST = √((1 - (-11))² + (-7 - (-8))²) = √(145) ≈ 12.0
Length of QS = √((1 - (-10))² + (-7 - (-2))²) = √(146) ≈ 12.1
Length of RT = √((1 - (-11))² + (-1 - (-8))²) = √(193) ≈ 13.9
The lengths of the opposite sides of a parallelogram are the same. The lengths of the sides of the quadrilateral QRST are different, therefore, quadrilateral QRST is not a parallelogram.
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Need done soon pls! Super easy
Answer:
choose 3rd option
Step-by-step explanation:
akis bicycle designs has determined that when x hindered bicycles are built the average cost
The bicycles which the shop should build to minimize the average cost per bicycle is 25 bicycles
How to find number of bicycles that will minimize average cost?Average cost function:
C(x) = 0.2x² - 0.1x + 3.799This is a quadratic function, So
a = 0.2b = -0.1c = 3.799Average cost is minimum when
x = - b / 2a
= -(-0.1) / 2(0.2)
= 0.1 / 0.4
x = 1/4
Number of bicycles which should to minimize average cost per bicycle = minimum average cost × total cost
= 1/4 × 100
= 25 bicycles
Therefore, the number of bicycles which will minimize the average cost function is ,25 bicycles.
Complete question:
Aki's bicycle designs has determined that when x hundred bicycles are built, the average cost per bicycle is given by C(x)=0.2x^2-0.1x+3.799, where C(x) is in hundreds of dollars. How many bicycles should the shop build to minimize the average cost per bicycle?
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Today only, a table is being sold for $333. This is 74% of its regular price. What was the price yesterday?
A line of best fit was drawn to the plotted points in a data set below. Based on the line of best fit, for what y-value does x=16x=16?
Answer:yes its 15
Step-by-step explanation:
hellloppppppp ILL MARK BRAINLIEST!!!!
Answer:
x=47
Step-by-step explanation:
Sum of all three angles of a triangle is 180 degrees
We know one angle which is 51 degrees
The second is 73 degrees since it’s corresponding angle is 73 degrees
73+51=124
Now subtract this from 180
180-124=56
We can set x+9 equal to this
X+9=56
-9. -9
x=47
Hopes this helps please mark brainliest
While charting, a nurse notes that a patient has a medication infusing at 40.5 mL/hr. The label on the IV bag says 400 mg in 250 mL. How many mcg/min is the patient receiving?
The conversion factor you will need for this question is: 1 mg equals 1000 mcg
The amount that the patient is receiving, in mcg/min, using proportions, is of:
1008 mcg/min.
What is a proportion?A proportion represents a unit rate relative to a total amount, and this unit rate is used along basic arithmetic operations, especially multiplication and division, to find the desired measures in the context of a problem.
Considering than an hour has 60 minutes, the amount infused each minute is given as follows:
40.5/60 = 0.675 mL/min.
The rate of milligrams per milliliters is given as follows:
400/250 = 1.6 mg per mL.
Hence the number of mg received per minute is:
1.6 x 0.675 = 1.08 mg per minute.
1 mg equals 1000 mcg, hence the number of mcg received per minute is:
1.08 x 1000 = 1008 mcg/min.
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Find the accumulated value of an investment of $20,000 for 7 years at an interest rate of 4% if the money is a.
compounded semiannually; b. compounded quarterly; c. compounded monthly; d. compounded continuously.
Part a; compounded semiannually (n = 2); CI = $6,390.
Part b: compounded quarterly ( n = 4) ; CI = $6,425
Part c: compounded monthly (n = 12): CI = $6,450
Part d: compounded continuously; CI = $6,467.
What is known as the term compound interest?Compound interest is computed as interest on the base principal plus any interest income from prior periods. The frequency plan for compounding interest can be set to be continuous, daily, or yearly.The compound interest is calumniated by formula.
A = P(1 + r/100n)∧nt
In which,
A = amount after compounding
P = principal amount ($20,000 )
n = number of time principal amount compounded in a year.
t = total time in years (7 years)
r= rate of interest (4%)
Part a; compounded semiannually (n = 2)
A = P(1 + r/100n)∧nt
A = 20,000(1 + 4/200)∧(2x7)
A = 26390
CI = A - P
CI = 26,390 - 20,000
CI = $6,390.
Part b: compounded quarterly ( n = 4)
A = 20,000(1 + 4/400)∧(4x7)
A = 26425
CI = A - P
CI = 26,425 - 20,000
CI = $6,425
Part c: compounded monthly (n = 12)
A = 20,000(1 + 4/1200)∧(12x7)
A = 26450
CI = A - P
CI = 26,450- 20,000
CI = $6,450
Part d: compounded continuously.
P = P₀e∧rt
P = (20,000)(2.72)∧(0.04 x 7)
P = 20,000 x 1.32
P = 26,467
CI = 26,467 - 20, 000
CI = $6,467.
Thus, the for compounded continuously is $6,467.
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HELP!! Simply the expression
Answer:
[tex]\frac{2x\sqrt{3y}}{{3y}}[/tex]
Step-by-step explanation:
Apply fractional law for squares:
[tex]\sqrt{\frac{4x^2}{3y}} = \frac{\sqrt{4x^2}}{\sqrt{{3y}}}[/tex]
Then simply:
[tex]\frac{2x}{\sqrt{{3y}}}[/tex]
Rationalize denominator:
[tex]\frac{2x}{\sqrt{{3y}}} \cdot \frac{\sqrt{{3y}}}{\sqrt{{3y}}} = \frac{2x\sqrt{3y}}{{3y}}[/tex]
Using slope-intercept, standard form, or point slope -
An arrow released from a bow, traveling towards a target 200 yards away,
reaches a max height of 42.6 ft in only 1.5 seconds. What is the height of the
arrow at 2.5 seconds?
Thank you so much!
The height of the arrow at 2.5 seconds is 71 feet.
Given:
An arrow released from a bow, traveling towards a target 200 yards away,reaches a max height of 42.6 ft in only 1.5 seconds.
1.5 seconds = 42.6 feet
divide by 1.5 on both sides.
1 sec = 28.4 feet
0.5 sec = 28.4/2
0.5 sec = 14.2 feet
2.5 sec = 1.5 sec + 1 sec
= 42.6 + 28.4
= 71 feet
Therefore The height of the arrow at 2.5 seconds is 71 feet.
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What’s M +3+ 2M plus one
Answer:
0
Step-by-step explanation:
Six car batteries weigh 46.2 pounds. Fourteen car batteries weigh 107.8 pounds. Does this represent a proportional relationship? If so, state the constant of proportionality.
The relationship of the battery represent a proportional relationship and the constant is 7.7 pounds.
How to calculate the constant of proportionality?From the information, 6 car batteries weigh 46.2 pounds. The weight per battery will be:
= 46.2 / 6
= 7.7 pounds
Also, rourteen car batteries weigh 107.8 pounds, the weight per battery will be:
= 107.8 / 14
= 7.7 pounds
The constant of proportionality is 7.7.
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What is the area of this triangle? O 18 square units O 20 square units O 21 square units 024 square units
The area of this triangle is 21 square units.
From the graph:
The length of the base = 4 + 3 units
= 7 units
The length of the height = 3 + 3
= 6 units
Area of the triangle = 1/2 b *h
= 1/2*7*6
= 1*42/2
= 42/2
= 21 square units.
Therefore the area of this triangle is 21 square units.
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Does this table represent a function? Why or why not? X 2 3 4 5 5 A y 1 4 4 2 5 A. No, because two of the y-values are the same. OB. Yes, because there is the same number of x-values as y-values. OC. No, because one x-value corresponds to two different y-values. D. Yes, because every x-value corresponds to exactly one y-value.
Answer:no
Step-by-step explanation:
No because 2 5's in x