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4 years ago

5

How do you find the slope of a point

2 answers:

torisob [31]4 years ago

8 0

Two points You mean? if So it's Rise/Run. E.G; Y2-Y1/X2-X1

Hoochie [10]4 years ago

5 0

A point doesn't have slope. Once you have TWO points, then the line between them has a slope. The slope is (how far the line rises from one point to the other) divided by (the level distance between them).

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Becky went scuba diving. The inequality statement compares the magnitude of two depths that she reached.

zepelin [54]

Answer:

don't know

Step-by-step explanation:

Becky went scuba diving. The inequality statement compares the magnitude of two depths that she reached.

1-28] > 1-3

What does the inequality statement show?

Select from the drop-down menus to correctly complete the statement.

-28 is greater

than-3, but 28 m below sea level is a greater

depth than 3 m below sea level.

5 0

3 years ago

13) Your parents give you a weekly allowance

Tamiku [17]

Answer:

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Step-by-step explanation:

6 0

3 years ago

(16 - 6) + f - 9 = 12

CaHeK987 [17]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

A box with a rectangular base and open top must have a volume of 128 f t 3 . The length of the base is twice the width of base.

noname [10]

Answer:

$Width = 4ft$

$Height = 4ft$

$Length = 8ft$

Step-by-step explanation:

Given

$Volume = 128ft^3$

$L = 2W$

$Base\ Cost = \$9/ft^2$

$Sides\ Cost = \$6/ft^2$

Required

The dimension that minimizes the cost

The volume is:

$Volume = LWH$

This gives:

$128 = LWH$

Substitute $L = 2W$

$128 = 2W * WH$

$128 = 2W^2H$

Make H the subject

$H = \frac{128}{2W^2}$

$H = \frac{64}{W^2}$

The surface area is:

Area = Area of Bottom + Area of Sides

So, we have:

$A = LW + 2(WH + LH)$

The cost is:

$Cost = 9 * LW + 6 * 2(WH + LH)$

$Cost = 9 * LW + 12(WH + LH)$

$Cost = 9 * LW + 12H(W + L)$

Substitute: $H = \frac{64}{W^2}$ and $L = 2W$

$Cost =9*2W*W + 12 * \frac{64}{W^2}(W + 2W)$

$Cost =18W^2 + \frac{768}{W^2}*3W$

$Cost =18W^2 + \frac{2304}{W}$

To minimize the cost, we differentiate

$C' =2*18W + -1 * 2304W^{-2}$

Then set to 0

$2*18W + -1 * 2304W^{-2} =0$

$36W - 2304W^{-2} =0$

Rewrite as:

$36W = 2304W^{-2}$

Divide both sides by W

$36 = 2304W^{-3}$

Rewrite as:

$36 = \frac{2304}{W^3}$

Solve for $W^3$

$W^3 = \frac{2304}{36}$

$W^3 = 64$

Take cube roots

$W = 4$

Recall that:

$L = 2W$

$L = 2 * 4$

$L = 8$

$H = \frac{64}{W^2}$

$H = \frac{64}{4^2}$

$H = \frac{64}{16}$

$H = 4$

Hence, the dimension that minimizes the cost is:

$Width = 4ft$

$Height = 4ft$

$Length = 8ft$

8 0

3 years ago

Help with this plz on finding x

ratelena [41]

M<3 = m<5
10x = 12x - 25
2x = 25
x = 12.5

answer is A. first choice

3 0

4 years ago