3 years ago

What’s the answer???(SOMEONE PLEASE HELP)

Mathematics

1 answer:

AlexFokin [52]3 years ago

4 0

Answer:

I think it might be b

Step-by-step explanation:

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(10 +13)2 + 7y)<br> Which expression is equivalent to the expression above?

Aleks [24]

(2+7y)+13+10 is the answer

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3 years ago

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An ice cube is melting, and the lengths of its sides are decreasing at a rate of 0.8 millimeters per minute At what rate is the

julia-pushkina [17]

Answer:

The rate of decrease is: $43.2mm^3/min$

Step-by-step explanation:

Given

$l = 18mm$

$\frac{dl}{dt} = -0.8mm/min$ ---- We used minus because the rate is decreasing

Required

Rate of decrease when: $l = 18mm$

The volume of the cube is:

$V = l^3$

Differentiate

$\frac{dV}{dl} = 3l^2$

Make dV the subject

$dV = 3l^2 \cdot dl$

Divide both sides by dt

$\frac{dV}{dt} = 3l^2 \cdot \frac{dl}{dt}$

Given that: $l = 18mm$ and $\frac{dl}{dt} = -0.8mm/min$

$\frac{dV}{dt} = 3 * (18mm)^2 * (-0.8mm/min)$

$\frac{dV}{dt} = 3 * 18 *-0.8mm^3/min$

$\frac{dV}{dt} = -43.2mm^3/min$

<em>Hence, the rate of decrease is: 43.2mm^3/min</em>

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3 years ago

What is the y intercept

netineya [11]

Answer:

d-3

Step-by-step explanation:

thats the answer

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Find the slope of the line that passes through the pair of points (4,5) (10,0)

vovangra [49]

Slope = difference in y / difference in x
slope = 5 - 0 / 4 - 10
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slope = -.83333

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3 years ago

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Can someone plz help me with this??? I will also mark you brainliest!!!

Leokris [45]

-204 + 418 is 214 ft
-56 - 214 is -270 ft

I believe these should be correct.

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3 years ago