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3 years ago

20 POINTS PLZ HELP ASAP please show working out only need answer for Z will mark brainliest

Mathematics

2 answers:

Vladimir [108]3 years ago

4 0

Answer:

20 degrees

Step-by-step explanation:

X and y are the same degrees at 64 degrees. 180 minus 64 equals 116 and gives you the other value besides 44 and z. Then add 44 and 116 and subtract by 180. This gives you 20 degrees for z.

inna [77]3 years ago

4 0

Let’s take the isosceles first
So 180-52/2=64
Now since we know x
So 180-(64+44)
So 180 - 108=72
Now 52+z=72
So 72-52=z
Z=20
X&Y=64
Hope you mark me as the brainiest!

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A direct variation function contains the points (–9, –3) and (–12, –4). Which equation represents the function?

vladimir1956 [14]

Answer: third option.

Step-by-step explanation:

By definition, a direct variation function has the form shown below:

$y=kx$

Where k is a constant.

Then, knowing the given points, you can calculate k with the formula for calculate the slope of a line:

$m=\frac{y_2-y_1}{x_2-x_1}=\frac{-4-(-3)}{-12-(-9)}=\frac{1}{3}$

Substituting k into $y=kx$ , you obtain:

$y=\frac{1}{3}x\\\\y=\frac{x}{3}$

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4 years ago

If f(x) = startfraction 7 over x endfraction, then what is the slope of f(x) at x = 5? round your answer to 3 decimal places.

Flura [38]

The slope of the function to 3 dp is 0.280

<h3>Slope of a function</h3>

Slope is also known as the gradient of a function

Given the function $f(x) =\frac{7}{x}$

Taking the derivative of the function will give:

$f'(x)=-\frac{7}{x^2}$

Substitute x = 5 into the equation to have:

$f'(x)=-\frac{7}{5^2}$

$f'(x) = -\frac{7}{25}$

Hence the slope of the function to 3 dp is 0.280

Learn more on slope of function here: brainly.com/question/405397

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2 years ago

The Ferry family rented 50 chairs for $150. Which expression can be used to find the cost per chair?

vlada-n [284]

X=number of the chairs y=the total cost of chairs
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3 years ago

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