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3 years ago

9

How do i make (9x-7y=-7) into slope intercept form?

1 answer:

ahrayia [7]3 years ago

6 0

It's called "solve the equation for 'y' ". That means move things
around so that you end up with 'y' all alone on one side, and
everything else on the other side.

You started with 9x - 7y = -7

Subtract 9x from each side: - 7y = -9x - 7

Divide each side by -7 : y = 9/7 x + 1

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Line BD is tangent to circle O at C, Arch AEC = 299, and ACE = 93. Find Angle DCE.

VladimirAG [237]

In triangle ACE,
we know C=93,E can be calulated by using arch angle AEC...what ever that is....,using this we get A=180-(E+93)

So, by alternate segment theorem, DCE= A.

thats all i can say.

7 0

3 years ago

What is the period for the function y = -4 cos (5x +3)? (4.3)

BlackZzzverrR [31]

The periodicity of function is $\frac{2 \pi}{5}$

<em><u>Solution:</u></em>

Given that we have to find the period of function

<em><u>Given function is:</u></em>

$y = -4 + cos(5x+3)$

<em><u>Use the below formula:</u></em>

$\mathrm{Periodicity\:of\:}a\cdot \cos \left(bx\:+\:c\right)\:+\:d=\frac{\mathrm{periodicity\:of}\:\cos \left(x\right)}{|b|}$

Thus,

$Peridocity\ of\ cos(5x + 3) - 4 = \frac{\text{periodicity of cos(x)}}{5}$

Now find the periodicity of cos(x)

We know that,

periodicity of cos(x) = $2 \pi$

Therefore,

$Peridocity\ of\ cos(5x + 3) - 4 = \frac{2 \pi}{5}$

Thus the periodicity of function is $\frac{2 \pi}{5}$

4 0

3 years ago

Answer plz show work

Bezzdna [24]

36 cans = 21%

36 / 21% = x
36 / 0.21 = x
171 = x

171 cans = 100%

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3 years ago

A tree surgeon reduces the height of a beech tree by 32%.

Jobisdone [24]

Let original Hieght be X

reduction = 32% = 32/100 X

new hieght = 4.42 m

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2 years ago

9/81 is equivalent to which fraction?

Nady [450]

I would say that 9/81 is equivalent to 1/9 so....
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4 years ago

Read 2 more answers