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3 years ago

Write the equation in slope intercept form y+4=-(x-7)/ Please help I don't get this and I have a final on thursday.

Mathematics

1 answer:

frez [133]3 years ago

5 0

Answer:

$y=-x+3$

Step-by-step explanation:

we have

$y+4=-(x-7)$

This is the equation of the line in point slope form

The equation of the line in slope intercept form is equal to

$y=mx+b$

where

m is the slope

b is the y-intercept

Convert the equation to slope intercept form

remove the parenthesis right side

$y+4=-x+7$

subtract 4 both sides

$y+4-4=-x+7-4$

$y=-x+3$ ---> equation in slope intercept form

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2 years ago

Read 2 more answers

webassign If a snowball melts so that its surface area decreases at a rate of 6 cm2/min, find the rate at which the diameter dec

drek231 [11]

Answer:

The answer is $\frac{3}{10\pi } cm/min$

Step-by-step explanation:

Assuming the snowball is a perfect sphere, then if A denotes the surface area and D the diameter then:

$A=4\pi r^{2} = 4\pi (\frac{D}{2} )^{2} =\pi D^{2}$

Differentiating wrt r we have:

$\frac{dA}{dD} =2\pi D$

We are told that $\frac{dA}{dt}= -6$ and we want to find $\frac{dD}{dt}$

By the chain rule we have:

$\frac{dA}{dD}=\frac{dA}{dt}.\frac{dt}{dD}=\frac{\frac{dA}{dt} }{\frac{dD}{dt} }$

∴ $2\pi D=-\frac{6}{\frac{dD}{dt} }$

∴ $\frac{dD}{dt}=-\frac{6}{2\pi D}$

When D=10 then

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The sign (-) shows that the D is decreasing.

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2 years ago

what is the value of x? SHOW ALL YOUR WORK. ONLY ANSWER IF YOU KNOW. PLEASE DONT REWRITE SOMEONE ELSE'S ANSWER DOWN. WILL MARK B

ioda

Answer:

I'm pretty sure he or she are right^^

Step-by-step explanation:

I Know

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2 years ago

Write the equation in slope intercept form y+4=-(x-7)/ Please help I don't get this and I have a final on thursday.​

Write the equation in slope intercept form y+4=-(x-7)/ Please help I don't get this and I have a final on thursday.