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4 years ago

9

PLEASE HURRY...............BRAINLEAST Ervin scores half as many points in a game as Larry. If Larry scored x points, write an ex

pression to represent how many points Ervin scored. A) 2x Eliminate B) 2 + x C) x - 2 D) 1 2 x

2 answers:

mamaluj [8]4 years ago

6 0

Should be

1/2 x

answer is

1/2 x

bogdanovich [222]4 years ago

5 0

Your answer would be D. 1/2 x. Hope I helped you!

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Between the two of them, they teach 35 yoga classes each week. if erica teaches 13 fewer than twice as many as bo, how many clas

Nutka1998 [239]

Assume x are Erica's classes & y are Bo's classes.
x+y=35
x=2y-13
Replacing the value of x into the first equation
2y-13+y=35
3y=35+13
y=16 classes
x=2*16-13=19 classes

7 0

3 years ago

Find the area bounded by the given curves: <br> y=2x−x2,y=2x−4

Andrej [43]

Answer:

$A = [\frac{32}{3}]$

Step-by-step explanation:

Given

$y_1 = 2x - x^2$

$y_2 = 2x - 4$

Required

Determine the area bounded by the curves

First, we need to determine their points of intersection

$2x - x^2 = 2x - 4$

Subtract 2x from both sides

$-x^2 = -4$

Multiply through by -1

$x^2 = 4$

Take square root of both sides

$x = 2$ or $x = -2$

This Area is then calculated as thus

$A = \int\limits^a_b {[y_1 - y_2]} \, dx$

<em>Where a = 2 and b = -2</em>

Substitute values for $y_1$ and $y_2$

$A = \int\limits^a_b {(2x - x^2) - (2x - 4)} \, dx$

Open Brackets

$A = \int\limits^a_b {2x - x^2 - 2x + 4} \, dx$

Collect Like Terms

$A = \int\limits^a_b {2x - 2x- x^2 + 4} \, dx$

$A = \int\limits^a_b {- x^2 + 4} \, dx$

Integrate

$A = [-\frac{x^{3}}{3} +4x](2,-2)$

$A = [-\frac{2^{3}}{3} +4(2)] - [-\frac{-2^{3}}{3} +4(-2)]$

$A = [-\frac{8}{3} +8] - [-\frac{-8}{3} -8]$

$A = [\frac{-8+ 24}{3}] - [\frac{8}{3} -8]$

$A = [\frac{-8+ 24}{3}] - [\frac{8-24}{3}]$

$A = [\frac{16}{3}] - [\frac{-16}{3}]$

$A = [\frac{16}{3}] + [\frac{16}{3}]$

$A = [\frac{16 + 16}{3}]$

$A = [\frac{32}{3}]$

Hence, the Area is:

$A = [\frac{32}{3}]$

7 0

4 years ago

The volume of a cone-shaped funnel is 236 cubic centimeters. The radius of the funnel is 5 centimeters Find the height of the fu

DochEvi [55]

Answer:

9 cm

Step-by-step explanation:

V = 1/3 pi r^2 h

V = 1/3 * 3.14 * 5^2 * h

236 = 1/3 * 3.14 * 25 * h

236 = 26.1667 h

236 / 26.1667 = h

9.019 = h

Rounded to the nearest whole number the h is about 9 cm.

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3 years ago

What is the slope of the line?

Dimas [21]

Answer:

-1/2

Step-by-step explanation:

If you go to any point on the line, you count down 1 point, and over to the right by 2 points to get back to the line. That is what makes the slope -1/2.

7 0

3 years ago

Read 2 more answers

5 times what equals .60

ahrayia [7]

Answer:

0.12

Step-by-step explanation:

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3 years ago