Answer:
4.5 hours
Step-by-step explanation:
8:2h = 18:x
8x = 18×2h
x = 36h/8
x = 4.5
hope this helps :)
Who’s willing to help? :)
Answer:
1- 77
2- 39
3- 50
4- 46
5- 49
6- 67
7- 29
8- 9
9- 15
10- 22
Step-by-step explanation:
P) Parentheses
E) Exponents
M) Multiplication
D) Division
A) Addition
S) Subtraction
Left to right
Answer this question for me pls. :)
- Which expression is equivalent to 2(3x + 4)(x - 1)(x-3)? *
Answer: 6x^3−16x^2−14x+24 is your answer
have a good day
Yours,
Nathaniel
Step-by-step explanation:
The expression 2(3x + 4)(x - 1)(x-3) is equivalent to the expression 6x³ - 16x² - 14x + 24 option (A) is correct.
What is an expression?It is defined as the combination of constants and variables with mathematical operators.
It is given that:
The expression is:
= 2(3x + 4)(x - 1)(x-3)
After the multiplication of the polynomial:
= 2(3x² + x - 4)(x - 3)
Again multiplication:
= 2(3x³ - 8x² - 7x + 12)
= 6x³ - 16x² - 14x + 24
Thus, the expression 2(3x + 4)(x - 1)(x-3) is equivalent to the expression 6x³ - 16x² - 14x + 24 option (A) is correct.
Learn more about the expression here:
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-3x+2y=-39 and 5x+4y=21 Algebra elimination
The solution of the system of equations is x = 9 and y = -6.
What is the system of equations?One or many equations having the same number of unknowns that can be solved simultaneously called as simultaneous equation. And simultaneous equation is the system of equation.
We have a system of equations,
-3x+2y = -39 {equation 1}
and 5x+4y = 21 {equation 2}
To eliminate the variable y:
Multiply by 2 to the equation 1 and subtract to the equation 2,
5x + 6x + 4y - 4y = 99
11x = 99
x = 9
And y =-6
Therefore, the solution is x = 9 and y = -6.
To learn more about the system of equation;
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Write the equation of a line that passes through the points (-2,-6) and (3, 19). I
Answer:
y=5x+4
Step-by-step explanation:
You would have to look up how to do the hadn written way of figuring out this but I just used my calculator. To do this with your TI-84 or newer calculator, press "stat" and go into "edit". You will see some columns with the names "L1, L2, L3, etc." which stand for lists. put your x values in "L1" and their corresponding y values next to them in "L2". When you're done press stat again and move right to the heading "Calc". Go down to number 4 which should say "LinReg(ax+b)" next to it and press enter. now you should see "Xlist" and "Ylist" with "L1" and "L2" beside them respectively. Once that is set, go down to "Calculate" and press enter and it should give you slope intercpet form and what "a" and "b" are. You're welcome.~ ;P
Twenty students went to a fast food restaurant. Everyone ordered a hamburger and a drink. Hamburgers cost $3.25 each and drinks cost $1.15 each. How much did the students spend in all?
Answer:
The total amount spent was $88.
Step-by-step explanation:
The information provided is:
Twenty students went to a fast food restaurant. Everyone ordered a hamburger and a drink. Hamburgers cost $3.25 each and drinks cost $1.15 each.Compute the total cost as follows:
[tex]\text{Total Cost}=\$3.25\cdot \text{No. of Hamburgers}+\$1.15\cdot \text{No. of Drinks}[/tex]
[tex]=(\$3.25 \times 20)+(\$1.15 \times 20)\\\\=\$65+\$23\\\\=\$88[/tex]
Thus, the total amount spent was $88.
Can you pls help me
What is g(-1)
Answer:
It'd be -g
Step-by-step explanation:
If you were to multiply g and -1, it'd be -g since a positive time a negative is negative.
But I'm not sure if you're talking about the g in functions. I haven't learned that yet, so sorry if my answer was not what you're looking for.
Find the slope of the line -7,-4 and -7,-2
Answer:
slope - x=-7
Step-by-step explanation:
Jerry and Ellen cleaned a house four $15.00 an hour. The total time they worked was 8 hours. Jerry was the lead worker and took 75% of the pay. How much did Ellen make?
Answer:
$30
Step-by-step explanation:
$15 x 8 = $120
$120 x 0.75 = 90
120 - 90 = 30
Ellen made $30
I only need help with the third one
Answer:
240
Step-by-step explanation:
12/100 X 2000
=240
the answer is 240
Answer:
$240
Step-by-step explanation:
How do I solve 8x+5y=-20 ?
Answer: y=-8/5x-4
Step-by-step explanation:
8x+5y=-20
-8x -8x
5y=-8x-20
/5 /5
y=-8/5x-4
help plz. I have no idea what i'm doing!
Answer:
g(x) = 1/4 f(x)
Step-by-step explanation:
f passes through the origin and has a slope of 1.
f(x) = x
g passes through the origin and has a slope of 1/4.
g(x) = 1/4 x
Substituting:
g(x) = 1/4 f(x)
Plz help this will fix my grade
Form a polynomial whose zeros and degree are given.
Zeros: 6, multiplicity 1; 3, multiplicity 2; degree 3
Type a polynomial with integer coefficients and a leading coefficient of 1 in the box below.
f(x) = (Simplify your answer.)
Answer: (x-6)(x-3)² all multiplied by 3.
Step-by-step explanation: first you will simplify (x-3)² then multiply it by (x-6). Then lastly you will multiply tha entire answer by 3 and simplify.
Hope this helped!!! :))
1.
Without finding the squares of the numbers,
find the ones place digit for the squares of
the following numbers.
(a) 38
(b) 65
(c) 490
(d) 34
Find all real square roots of 25
Answer:
All real square roots of 25 is +5 and -5.
Step-by-step explanation:
When you square root something, you take the positive and negative of the number, so the square root of 25 would be 5 and -5.
When you do 5 times 5, you get 25 and when you do -5 times -5, you get 25 as well, this is why we do the negative as well.
#teamtrees #WAP (Water And Plant)
It is found that all the real square roots of 25 are 5 and -5.
How to find the closest integer less than and greater than the square root of a number?The function is strictly increasing function for x ≥ 0.
Assuming that all the values of x are ≥ 1, whenever there is increment in the value of 'x', the value of y increases too Perfect square are those integers whose square root is an integer. Let x-a be the closest perfect square less than x, and let x+b be the closest perfect square more than x, then we get: x-a < x < x+b (no perfect square in between x-a and x+b, except possibly x itself).
When we do square root of something, we take the positive and negative of the number, so the square root of 25 would be 5 and -5.
When we do 5 times 5, we will get 25 and when we do -5 times -5, we will get 25 as well, this is why we do the negative as well.
Hence, all the real square roots of 25 are 5 and -5.
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Please help me! ASAP
11
10
9
8
7
6
5
4
3
2
1
1 2 3
4
5 6 7 8 9 10 11
A.
B. 8
C. 4
D. 3
Answer:
Here
Step-by-step explanation:
C.4
Each time you go up 4 over 1
so it would be 4/1=4
Which of the following expressions is equivalent to -6-(-3)? Select all that apply. Justify your reasoning.
3-6
-6+3
-6-3
3+(-6)
Pre-cal Problem, please, help is very much appreciated!
Let y be the length of the third side. By the Pythagorean theorem,
y² + x² = 3² = 9
so that
y = √(9 - x²)
(taking the positive root because one expects length to be positive)
Then by the definitions of sine, cosine, and tangent, we have
sin(θ) = x / 3 → θ = sin⁻¹(x / 3)
cos(θ) = √(9 - x²) / 3 → θ = cos⁻¹(√(9 - x²) / 3)
tan(θ) = x / √(9 - x²) → θ = tan⁻¹(x / √(9 - x²))
3x : 8 = 7 : 2 Calculate the value of x
Answer: x = 28/3
[tex]\frac{3x}{8}=\frac{7}2} \\\\=>3x=\frac{7.8}{2}=28 \\\\=>x=\frac{28}{3}[/tex]
Step-by-step explanation:
Which expression is rational?
6.27316543222718...
square root of 2
square root of 14.
square root of 49
i believe its √49.
Explanation:the square root of 49 is 7, and 7 is a rational number
What is the value (5+6)7-3^2
Answer:
68
Step-by-step explanation:
Answer: 68
Step-by-step explanation:
(5+6)(7)−32
=(11)(7)−32
=77−32
=77−9
= 68
Evaluate 15 + |-3| - 4 22 14 8
Answer:
14
Step-by-step explanation:
absolute value is the distance away from 0, so the absolute value of -3 is 3. 15 + 3 = 18. 18 - 4 = 14.
Answer:
-422130
Step-by-step explanation:
Write 3 numbers between 1.15 and 1.16 that equal 1.15 when rounded to the nearest hundredth
1. Allison’s middle school team has designed t-shirts containing their team name and color. Allison and her friend Nicole have volunteered to call local stores to get an estimate on the total cost of purchasing t-shirts. Print-o-Rama charges a set-up fee, as well as a fixed amount for each shirt ordered. The total cost is shown below for the given number of shirts. Value T’s and More charges $8 per shirt. Which company should they use?
a. Does either pricing model represent a proportional relationship between the quantity of t-shirts and the total cost? Explain.
b. What is the constant of proportionality of Value T’s and More? What does it represent?
c. How much is Print-o-Rama’s set-up fee?
d. If you need to purchase 90 shirts, write a proposal to your teacher indicating which company the team should use. Be sure to support your choice. Determine the number of shirts that you need for your team.
Answer:
the numbers are missing here, so I looked for a similar question:
Print-O-Rama
# shirts total cost
10 $95
50 $375
a. Does either pricing model represent a proportional relationship between the quantity of t-shirts and the total cost? Explain.
Value T’s and More offers a proportional relationship since each t-shirt costs $8 regardless of the number of t-shirts
b. What is the constant of proportionality of Value T’s and More? What does it represent?
$8 per t-shirt
f(c) = $8t
the function of total cost = $8 times the number of t-shirts ordered
c. How much is Print-o-Rama’s set-up fee?
using the high-low method
variable cost = ($375 - $95) / /50 - 10) = $7 per t-shirt
fixed cost (set-up fee) = $375 - (50 x $7) = $25
d. If you need to purchase 90 shirts, write a proposal to your teacher indicating which company the team should use. Be sure to support your choice. Determine the number of shirts that you need for your team.
purchasing 90 t-shirts at Print-o-Rama costs = $25 + (90 x $7) = $655
purchasing 90 t-shirts at Value T’s and More costs = 90 x $8 = $720
you should purchase the t-shirts at Print-o-Rama since the cost is lower.
A circle has radius 25cm long. A chord of length 14cm is drawn from the center of the circle of the circle. Calculate distance between the chord and the center of the circle
Answer:
Step-by-step explanation:
r=25 cm
chord=14 cm
1/2 chord=1/2×14=7 cm
using Pythagoras theorem
d=√(25²-7²)=√(625-49)=√(576)=24 cm
The quadratic x? - x = 2 has two solutions. What
is the larger of the two solutions?
What is the constant rate of change of the graph below?
Answer:
the constant rate of change is 20
70% of Ms. Miller's class passed the test on the first try. Those who failed were able to retake and half of those students passed on their second try. If there are 20 students in the class, what overall percentage passed the test?
Answer:
85%
Step-by-step explanation:
Calculate how many students passed on their first try. 20 x 70% is 14, so 14 students passed on their first try. 6 students retook the test. Half of 6 is 3. Add 3 to the 14 students that passed earlier.Calculate the percent with the equation 17/20 = 0.85. 0.85 = 85%.Please help im so confused rn :((
Answer:
1/144
Step-by-step explanation:
7/12÷14÷6=