Which expression is equal to 15x - 6

1 answer:

8 0

15x-6=-90
explore how the values of algebraic expressions like100-x,5/x+5,and
(3y) / (2y) change as the values of the variables change.

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PLEASE HELP ME

irina [24]

Answer: pt 2 HOPE THIS HELPS!

7 0

2 years ago

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Help me with this problem please a and b

nadya68 [22]

(a) Compare your quadratic for h to the general quadratic ax² +bx +c. Perhaps you can see that ...
a = -16
b = 128
You use these numbers in the given formula to find the time when the ball is highest.
t = -b/(2a) = -128/(2(-16)) = 4 . . . . . . the time at which the ball is highest

(b) Evaluate the quadratic to find the height at t=4.
h = -16(4)² +128(4) +21
h = -256 +512 +21
h = 277
The maximum height of the ball is 277 ft.

5 0

3 years ago

A small class has 9 students, 3 of whom are girls and 6 of whom are boys. the teacher is going to choose two of the students at

andrey2020 [161]

6/9 + 3/8 =1.04 (25/24)

5 0

3 years ago

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The volume of a cylinder is given by the formula v= m'h. where r is the radius of the cylinder and h is the height.

Verdich [7]

Answer:

The Volume of cylinder is: $\mathbf{Volume=2\pi x^3-5\pi x^2-24\pi x+63\pi }$

Option B is correct option.

Step-by-step explanation:

We are given:

Volume of cylinder = h = 2x+7

Radius of cylinder = r = x-3

We need to find volume of cylinder

The formula used is: $Volume=\pi r^2h$

Putting values and finding volume

$Volume=\pi r^2h\\Volume=\pi (x-3)^2(2x+7)\\Volume=\pi (x^2-6x+9)(2x+7)\\Volume=\pi (2x(x^2-6x+9)+7(x^2-6x+9))\\Volume=\pi (2x^3-12x^2+18x+7x^2-42x+63)\\Volume=\pi (2x^3-12x^2+7x^2-42x+18x+63)\\Volume=\pi (2x^3-5x^2-24x+63)\\Volume=2\pi x^3-5\pi x^2-24\pi x+63\pi \\$

So, The Volume of cylinder is: $\mathbf{Volume=2\pi x^3-5\pi x^2-24\pi x+63\pi }$

Option B is correct option.

8 0

2 years ago

Write an equation of the line passing through the points (4,8) and (-1,-12).

Free_Kalibri [48]

The perpendicular would be -1/4

5 0

2 years ago