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3 years ago

8

Kim was walking down a rocky path. For 4 minutes, the elevation dropped at the same rate. Altogether it dropped 8 feet. What was

the change in elevation each minute?

1 answer:

Marianna [84]3 years ago

7 0

Answer:

-2 ft/min

Step-by-step explanation:

If Kim dropped for a total of 8 feet over the course of 4 minutes, then 8 feet/4 min equals 2 ft/min, but because they are dropping it should be negative.

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Bill has a container that is shaped like a cube. He uses 125 cubes with a side length of 1 inch to fill the container completely

Annette [7]

Answer:

5 inches

Step-by-step explanation:

Given

Length of a cube = 1 inch

Required

Determine the edge length of the cube

If the container can take 125 cubes, then that's the volume

So:

$Volume = 125in^3$

Volume of a cube is calculated as thus;

$Volume = Length^3$

This gives;

$Length^3 = 125$

Take cube root of both sides

$Length = \sqrt[3]{125}$

$Length = 5$

Hence, the length is 5 inches

7 0

3 years ago

-x^2+2x-1 factor and please show work

torisob [31]

x = 1

$-x^{2} +2x-1=0\\-(x-1)^{2} \\x=1$

4 0

3 years ago

Help!! BRAINLIEST TOO!

natulia [17]

Answer:

36.5 inches

Step-by-step explanation:

Given

See attachment for the given data

Required

Which length is closest to 4.2lb

The given data is a linear dataset.

So, we start by calculating the slope (m)

$m =\frac{y_2 - y_1}{x_2 - x_1}$

Pick any two corresponding points from the table

So, we have:

$(x_1,y_1) = (8,1.21)$

$(x_2,y_2) = (12,1.63)$

So:

$m =\frac{y_2 - y_1}{x_2 - x_1}$

$m =\frac{1.63 - 1.21}{12 - 8}$

$m =\frac{0.42}{4}$

$m =0.105$

The linear equation is then calculated using:

$y = m(x - x_1) + y_1$

This gives:

$y = 0.105 * (x - 8) + 1.21$

Open bracket

$y = 0.105x - 0.84 + 1.21$

$y = 0.105x + 0.37$

To get the length closest to 4.2lb,

we set $y = 4.2$

Then solve for x

So, we have:

$y = 0.105x + 0.37$

$4.2 = 0.105x + 0.37$

Collect like terms

$0.105x= 4.2 - 0.37$

$0.105x= 3.83$

Solve for x

$x= 3.83/0.105$

$x\approx 36.5$

4 0

3 years ago

What is the answer to the problem 6x+1+7x

My name is Ann [436]

Mmm should be 13x+1

5 0

3 years ago

Read 2 more answers

A construction crew has just finished building a road. The crew worked for 14.4 days. If they built 3.5 kilometers of road each

storchak [24]

$\sf Hello!$

• $\sf Length \:of\: road \:built\: each\: day = 3.5 \:km$
• $\sf Total\: number \:of\: days\: the\: crew\: worked = 14.4 \:Days$

$\sf Then,$

$\sf Total\: length \:of \:road \:bulit$ :

= $\sf No. \:of \:days \:crew \:worked × Length \:of \:road\: built \:each\: day$

= $\sf 14.4 × 3.5 \:kilometers$

= $\sf 50.4 \:kilometers$

~ $\sf iCarl$

3 0

3 years ago

Read 2 more answers