Answer:
1: 50
2: 2.5
3: 5
1: multiply 10 by 100 and then divide the total by 5
as follows:
(10 x 100) / 5multiply 10 by 100 and then divide the total by 5 as follows:
(10 x 100) ÷5
equals 200
2: 90 is 250% of 36
3: 4: 20*100 =
(4*100): 20 =
400: 20 = 20
I WILL MARK U BRAINLIEST IF U DO THIS CORRECTLY!!!!!! ATTACHMENT BELOW
Answer:
210
Step-by-step explanation:
If each floor was 14 ft, and they want 15 floors, you would do 14 x 15, which equals 210
PLEASE HELP!
The half-life of a radioactive substance is 200 years. There are 8000 grams of the substance initially. How many grams of the substance are left after 300 years?
a) 5039.684g
b) 2828.427g
c) 3000g
d) 2000g
Answer:
B) 2828.427g
Step-by-step explanation:
Hope this helps!
HELP If 90 containers of candy hearts cost $2.70, what is the constant of proportionality
Answer: 0.03$ per container or 3 cents per container.
Step-by-step explanation: 2.70/90=0.03.
Answer:
It's either 0.03 or 2.70
Step-by-step explanation:
JK is formed by J(-12,3) and K(8,-5). If line r is the perpendicular bisector of JK, write an equation for r in slope-intercept form.
Answer:
y = 5/2x + 4Step-by-step explanation:
Midpoint of JK:
x = (-12 + 8)/2 = -4/2 = -2y = (3 - 5)/2 = -2/2 = -1Slope of the line JK:
m = (-5 - 3)/(8 - (-12)) = -8/20 = -2/5Perpendicular lines have negative reciprocal slopes.
So the line r has a slope 5/2 and passes through the point (-2, -1)
Equation of r:
y = 5/2x + b-1 = 5/2(-2) + b-1 = -5 + bb = 5 - 1b = 4So the equation is:
y = 5/2x + 4
PLEASE HELP WILL MARK AS BRAINLEST
Question: Use the equation
y = 5 + 1/2x to complete the table. Use the table to list some of the ordered pairs that satisfy the equation.
SOLVE FOR VARIABLE PLEASE HELPP ASAP!!:)))
Answer:
x=24
Step-by-step explanation:
180-96=84
2x+x+12=84
3x+12=84
3x=72
x=24
Answer:
x=24°
Step-by-step explanation:
180-96=84
2x+x+12=84
3x+12=84
-12 -12
3x=72
3x/3=72/3
x=24
hopefully this helps :)
Pls help....................
Answer: EGF
Step-by-step explanation:
Find two numbers the quotient is between. then estimate the quotient 41÷3
Answer:
25
Step-by-step explanation:
I'm not really good at math but I think 25 is the answe
Which equation represents a line parallel to the x-axis
1 x=5
2 y=10
3 x=1/3y
4 y=5x +17
Answer:
4
Step-by-step explanation:
Answer:
The answer is 4
Step-by-step explanation:
please give me brianliest
x^2-7x+7y-y^2
Factor (pls explain)
Answer: x(x-7)+y(7-y).
X and Y are common factors so you can factor both out and get this.
What postulate would you use to prove PQR TSR?
Answer:
SAS
Step-by-step explanation:
You have two pairs of congruent sides that are congruent.
The included angles are vertical angles, so they are congruent.
That means you have two sides and the included angle in each triangle.
Answer: SAS
Helene invested a total of $1,750 in two simple-interest bank accounts. One account paid 4% annual interest; the other paid 6% annual interest. The total amount of interest she earned after 1 year was $82. Find the amount invested in each account.
Answer:
The amount invested in the account paid 4% is $1150
The amount invested in the account paid 6% is $600
Step-by-step explanation:
The rule of the simple interest is I = Prt, where
P is the amount investedr is the rate in decimalt is the time∵ Helene invested a total of $1,750 in two simple-interest bank accounts
∴ P1 + P2 = 1750 ⇒ (1)
∵ One account paid 4% annual interest
∴ r1 = 4% = 4/100 = 0.04
∵ The other paid 6% annual interest
∴ r2 = 6% = 6/100 = 0.06
∵ The total amount of interest she earned after 1 year was $82
∴ I1 + I2 = 82 ⇒ (2)
∵ t = 1
∵ I1 = P1 × (0.04) × 1
∴ I1 = 0.04 P1
∵ I2 = P2 × (0.06) × 1
∴ I2 = 0.06 P2
→ Substitute them in equation (2)
∴ 0.04 P1 + 0.06 P2 = 82 ⇒ (3)
Now we have a system of equations to solve it
→ Multiply equation (1) by -0.06 to make the coefficients of y equal in
values and different in signs to eliminate it
∵ -0.06(P1) + -0.06(P2) = -0.06(1750)
∴ -0.06 P1 + -0.06 P2 = -105 ⇒ (4)
→ Add equations (3) and (4)
∵ (0.04 P1 + -0.06 P2) + (0.06 P2 + -0.06 P2) = (82 + -105)
∴ -0.02 P1 + 0 P2 = -23
∴ -0.02 P1 = -23
→ Divide both sides by -0.02
∴ P1 = 1150
→ Substitute the value of P1 in equation (1) to find P2
∵ 1150 + P2 = 1750
→ Subtract both sides by 1150 to find P2
∴ P2 = 600
∴ The amount invested in the account paid 4% is $1150
∴ The amount invested in the account paid 6% is $600
A truck driver travels from a distributor to a retailer every week. The driver records the distance that he is from the retailer at dilferent
times during his trip. After several weeks of collecting data, the driver creates a scatter plot of the data. The best-fit line is y = 73.6 --
67.8x, where x is the number of hours spent driving and y is the distance, in miles, from the retailer.
Which of the following statements are true? Select all that apply.
The distance from the retailer decreases with time.
The distance from the retailer increases with time.
OOOOO
The distributor is 73.6 miles away from the retailer
The distributor is 678 miles away from the retailer
The truck is traveling at a rate of 67.8 miles per hour.
Answer:
B. The distance from the retailer decreases with time, D. The distributor is 73.6 miles away from the retailer, E. The truck is traveling at a rate of 67.8 miles per hour.
Answers: B, D, E.
Step-by-step explanation:
:((( needdddd some help pleaseee
Answer:
D). g(x) = - x² - 4
Step-by-step explanation:
D). g(x) = - x² - 4
Answer: D
Step-by-step explanation: This has to do with Transformations. With transformations, it follows this formula:
A (Bx±C) ± D
A is a vertical transformation where the graph is pulled upwards or squished downwards. If it is a whole number, like 2, the graph is pulled (stretched) up. If it is a fraction, like 1/2, the graph is squished.
B is a horizontal transformation where the graph is stretched outwards or squished inwards (think: accordian). If it is a whole number, like 2, the graph is squished inwards. If it is a fraction, like 1/2, the graph is stretched outwards.
C is a shift right or left. In this case, the ENTIRE graph moves right or left by C. If it is x+C, the graph moves left. If it is x-C, the graph moves right.
D is a shift up or down. In this case, the ENTIRE graph moves up or down by D. If it is +D, the grapjh moves up. If it is -D, the graph moves down.
If there are no Parenthesis or Square Root for B and C to be inside of, then there is no B and C. For the graph of x², for example, you might only have
Ax² ± D.
A graph of x² with parenthesis might look like this
A (Bx²± C) ± D.
Finally, if there is a negative (-) in front of A, that means the entire graph flips accross the x-axis, upsidown. If it is a parabola (x²), then the 'opening' or 'U-shape' faces down when there is a negative in front of A.
Ok, now that the basics are taken care of, we can analyze the graph provided. We are given with the basic graph of x². The first obvious noteicable thing we see is the fact that the new graph, g(x), has been moved down by 4 units.
We know that a shift Downwards is an effect of D, so we know the graph of g(x) looks like this so far:
x² - 4
However, that is not the only transformation that we can notice about g(x). We see that g(x) is flipped upsidown, with its 'U-shape' facing downwards. We know that this is because there is a negative in front of A.
So, g(x) looks like this now:
- x² - 4
After careful examination, there are no other noticeable transformations, so we figure out that g(x) = - x² - 4.
Which of these prices is lower than 5 for $3.00?
12 for 7 dollars
8 for 5 dollars and 44 cents
6 for $3.72
7 for $4.06
(HELP TAKING A TEST)
Answer:
Sorry im not good at math
GIVEING BRAINLIST Match the terms to their definition.
1. proportion
a statement that sets the cross products of a proportion equal to each other
2. constant of proportionality
the relationship between two quantities that have a constant ratio
3. cross multiplication
the constant value relating two proportional quantities
4. proportional relationship
a statement that says two ratios are equal
Answer:
proportion=a statement that says two ratios are equal
constant of proportionality= the constant value relating two proportional quantities
cross multiplication= a statement that sets the cross products of a proportion equal to each other
proportional relationship= the relationship between two quantities that have a constant ratio
i just did this so you can mark the other person brainlist
In the triangle shown, the measure of angle A is 65.
B
65°
Choose all of the statements that are sufficient to determine that A ABC is an isosceles triangle.
m2B = 25°
B. MzB = 50
OOOO
C. m C = 65°
D.
AC = 65 units
E. AB = BC = 25 units
SRESET
Cynthia D Moreno, ID#****80
Growth: Math 6+ TX 2012
Question #8
Answer:
B. m<B=50
C. m<C=65
Step-by-step explanation:
We know that the interior angles of a triangle add up to 180 so knowing that A and C would be the same because of the fact it’s isosceles, the measure of A+C=130 meaning measure of missing angle B would be 50.
Answer:
B and C
Step-by-step explanation:
0.0008012 in standard form
Answer:
Step-by-step explanation:
8.012 x 10^-4
Answer:
8.012×10^-4
Step-by-step explanation:
..............
Plz help I don’t under stand how to get this common ratio
Answer:
2 over 5
Step-by-step explanation:
Common ratio =
7/ (35/2) = (14/2) / 7
Our answer became 2/5
Out of-pocket spending in a country for health care increased between 2003 and 2008. The function fox)-2574models average annual expenditures per household, in dollars. In this model, x represents the year, where x 0 corresponds to 2003 (a) Estimate out-of-pocket household spending on health care in 2008 (b) Determine the year when spending reached $2875 per household (c) The total expenditures per household in the year 2008 were approximately S (Round to the nearest dollar as needed.)
Answer:
(a) The total expenditures per household in the year 2008 were approximately $3,080.
(b) The spending reached $2875 per household in 2006.
Step-by-step explanation:
Note: This question is not complete, and the part c is not another question but the same question as part a. The complete question is therefore provided before answering the question as follows:
Out of-pocket spending in a country for health care increased between 2003 and 2008. The function f(x) = 2574e^(0.0359x) models average annual expenditures per household, in dollars. In this model, x represents the year, where x = 0 corresponds to 2003.
(a) Estimate out-of-pocket household spending on health care in 2008.
(b) Determine the year when spending reached $2875 per household
The explanation to the answer is now given as follows:
(a) Estimate out-of-pocket household spending on health care in 2008.
Given;
f(x) = 2574e^(0.0359x) ........................ (1)
Since x = 0 corresponds to 2003; by counting from 2003 to 2008, it implies that x = 5 corresponds to 2008.
Substituting x = 5 into equation (1) to estimate out-of-pocket household spending on health care in 2008, we have:
f(6) = 2574e^(0.0359 * 5)
f(6) = 2574 * 1.19661890406748
f(6) = 3,080.09705906969
Rounding to the nearest dollar as needed, we have:
f(6) = $3,080
Therefore, the total expenditures per household in the year 2008 were approximately $3,080.
(b) Determine the year when spending reached $2875 per household
This can be determined using equation (1) in part a by equating f(x) to $2875 solve for x as follows:
2875 = 2574e^(0.0359x)
2875 /2574 = e^(0.0359x)
1.11693861693862 = e^(0.0359x)
Taking the natural log of both sides, we have:
ln(1.11693861693862) = ln(e^(0.0359x))
0.110591565075382 = 0.0359x
x = 0.110591565075382 / 0.0359
x = 3.0805449881722
Approximating to a whole number, we have:
x = 3
Since x = 0 corresponds to 2003; by counting from 2003, x = 3 corresponds to 2006.
Therefore, the spending reached $2875 per household in 2006.
An exponential model can be found when two data points from the model are known.
The total expenditures per household in the year 2008 were near $3,080.
The spending reached $2875 per household in year 2006
(a). Out of-pocket spending in a country for health care given by function, [tex]f(x) = 2574e^{0.0359x}[/tex]
Since [tex]x = 0[/tex] corresponds to 2003, Similarly, x = 5 corresponds to 2008.
Substituting x = 5 into above function to estimate out-of-pocket household spending on health care in 2008
[tex]f(5) = 2574e^{0.0359*5} \\\\f(5)=3080[/tex]
f(5) = $3,080
Therefore, the total expenditures per household in the year 2008 were approximately $3,080.
(b). To determine the year when spending reached $2875 per household
[tex]2875 = 2574e^{0.0359x} \\\\2875/2574=e^{0.0359x} \\\\1.1169=e^{0.0359x}[/tex]
Taking natural log on both side
[tex]x=\frac{ln(1.1169)}{0.0359} =3.07[/tex]
Since x = 0 corresponds to 2003, So x = 3 corresponds to 2006.
Therefore, the spending reached $2875 per household in 2006.
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a linear graph passes through the point (6,4) and has a slope of 1/3 what is the x-intercept of the graph?
Answer:
74
Step-by-step explanation:
What is the value of this expression when x = -6 and ? 4(x2 + 3) − 2y
A. -131 B. -35 C. 57 D. 157
Answer:
I'm gonna guess and I don't know. I'm gonna go with C or A
Answer:
A
Step-by-step explanation:
I Just Took the Test.
After constructing a confidence interval estimate for a population mean, you believe that the interval is useless because it is too wide. In order to correct this problem, you need to:_______.a. increase the population standard deviation b. increase the level of confidence c. increase the sample size d. increase the sample mean e, none of these would help
Answer: C. Increase the sample size
Step-by-step explanation: The confidence interval is a interval estimate of two numbers. From the question, the width confidence interval
Can be modified into a more narrow margin by reducing the standard error. The standard error is the value obtained from the division of standard deviation and the square root of sample size. Hence, a decrease in the standard error will give a more narrow confidence interval estimate. The standard error can be reduced by increasing the denominator of the standard error formula which is the sample size.
Find the slope of the line
y = 9/4x - 9/2
Answer:
The slope is 9/4.
Step-by-step explanation:
In the equation y=mx+b, the slope is m. In you're case, the m=9/4.
Raymond drove from San Antonio to Dallas in 5.2 Hours. It is 390miles from San Antonio to Dallas. If Raymond drove at a constant rate of speed, and did not stop on the trip, how fast was Raymond driving?
Answer:
75 mph
Step-by-step explanation:
The speed of Raymond from San Antonio to Dallas is given by S = 75 mph
What is Speed?Speed is defined as the rate of change of position of an object in any direction. Speed is measured as the ratio of distance to the time in which the distance was covered. Speed is a scalar quantity as it has only direction and no magnitude
Speed = Distance / Time
Given data ,
Let the speed of Raymond from San Antonio to Dallas be S
Let the distance between San Antonio to Dallas be represented as D
Now , the value of D = 390 miles
Let the time taken for Raymond to travel D miles be T = 5.2 hours
Now , the speed is = Distance / Time
On simplifying , we get
The speed of Raymond from San Antonio to Dallas S = D / T
The speed of Raymond from San Antonio to Dallas S = 390 / 5.2
The speed of Raymond from San Antonio to Dallas S = 75 mph
Hence , the speed is 75 miles per hour
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In Taxland, the first $20,000 of income is exempt from tax. There is a 12% tax rate on income between $20,000 and $50,000, and a 16% tax rate on all income over $50,000.
Mr. Taxi earns $90,000. His average tax rate is
and his marginal tax rate is
.
Write your answer as a percent with one decimal point: for example 2.6%
Answer:
16.0%
16.0%
Step-by-step explanation:
Given that :
First $20,000 is exempt from tax
$20000 to $50000 = 12% tax rate
Over $50000 = 16% tax rate
Earning = $90000
Since earning is greater than $50000
Tax rate = 16% = 0.16
Average tax rate = tax paid / taxable income
Tax paid = 0.16 * 90,000 = $14,400
Average tax rate = 14,400 / 90,000
Average tax rate = 0.16 = 16%
Marginal tax rate :
Change in tax paid / change in earning
Suppose ; amount earned increases to 95,000
Tax paid = 95000 * 0.16 = 15200
Change in tax paid = (15200 - 14400) = 800
Change in earning = 95000 - 90000 = 5000
= 800 / 5000
= 0.16 = 16%
Marginal tax rate = 16%
What compound inequality describes this graph
Answer:
[tex] 3 < x < 4 [/tex]
Step-by-step explanation:
The graph shows a conjunction. Meaning, both statements of the compound inequality are true.
The empty circle shows that the values of x do not include 3 and 4. This means that x is greater than 3 and x is less than 4.
The compound inequality would be written as:
[tex] 3 < x < 4 [/tex]
I need help with this ASAP!!
Answer:
45
Step-by-step explanation:
Just plug in 12 wherever "z" is so,
[tex]5^2-\frac{12}{3} +2(12)[/tex] simplify the equation ⇒ [tex]25-4+24[/tex]
25-4=21
21+24=45
subtract and add as needed and finally our answer is
45
Subtract. Write the difference in simplest form.
(5n - 3) - (-2n + 7)
Answer:
Simplifying
(5n + -3) + -1(-2n + 7) = 0
Reorder the terms:
(-3 + 5n) + -1(-2n + 7) = 0
Remove parenthesis around (-3 + 5n)
-3 + 5n + -1(-2n + 7) = 0
Reorder the terms:
-3 + 5n + -1(7 + -2n) = 0
-3 + 5n + (7 * -1 + -2n * -1) = 0
-3 + 5n + (-7 + 2n) = 0
Reorder the terms:
-3 + -7 + 5n + 2n = 0
Combine like terms: -3 + -7 = -10
-10 + 5n + 2n = 0
Combine like terms: 5n + 2n = 7n
-10 + 7n = 0
Solving
-10 + 7n = 0
Solving for variable 'n'.
Move all terms containing n to the left, all other terms to the right.
Add '10' to each side of the equation.
-10 + 10 + 7n = 0 + 10
Combine like terms: -10 + 10 = 0
0 + 7n = 0 + 10
7n = 0 + 10
Combine like terms: 0 + 10 = 10
7n = 10
Divide each side by '7'.
n = 1.428571429
Simplifying
n = 1.428571429
Answer:
79-10
Step-by-step explanation:
Brainliest please.
jason is 3 times as old as his cousin. seven years from now the sum of their ages will be equal to 38. how old are they now
Answer:
Jadon is 18yrs
Cousin 6 yrs
Step-by-step explanation:
Answer:
Jason is 18 years old and his cousin is 6 years old.
Step-by-step explanation:
Just took the test