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3 years ago

What is the value of x? Test is timed please help.

Mathematics

1 answer:

Darina [25.2K]3 years ago

8 0

Answer:

x = 19

Step-by-step explanation:

A circle has a total of 360 degrees. Because central angles are congruent to the degree measures of their arcs, and because of vertical angles we can construct the equation :

5x+37+5x+37+3x-9-9=360

We can simplify this to :

8x+28=360

Subtract 28, divide 8, and x is 19

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What is the x and y intercept for the linear function?

nataly862011 [7]

4837282/727281818181(1818$

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3 years ago

Which of the following functions represent exponential decay?

Alexandra [31]

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3 years ago

Jin needs to fence in his rectangular backyard. The fence will have one long section away from, but parallel to, the length of h

Nookie1986 [14]

Answer: C. 9x+6 yd

Step-by-step explanation:

Given: The length of Jin's house= $3x+4\ yd$

The area of Jin's backyard= $9x^2+15x+4\ yd^2$

By middle splitting method, The area of Jin's backyard= $9x^2+12x+3x+4\ yd^2=(3x+1)(3x+4)\ yds$

To find the width of the backyard, divide the area by the length, we get

Width $=\frac{(3x+1)(3x+4)}{(3x+4)}=3x+1$

According to the question, only three sides need to fence

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5 0

3 years ago

I need help with 21 please. Thank you

Margarita [4]

1) Let, the number of movies = m
It would be: 40 + 2n = 100

2) solving the equation:
40 + 2n = 100
2n = 100 - 40
n = 60/2
n = 30

In short, Your Answer would be 30

Hope this helps!

5 0

3 years ago

If y=3/x then y'=? A)-y/x B)y/x C)-x/y D)-3x/y E)-y/3x

Marina86 [1]

$y=\dfrac{3}{x}\\\\\\
y'=\left(\dfrac{3}{x}\right)'=(3\cdot x^{-1})'=3\cdot(x^{-1})'=3\cdot(-1)\cdot x^{-2}=-3\cdot x^{-2}=\\\\\\=-\dfrac{3}{x^2}=-\dfrac{3}{x\cdot x}=-\dfrac{3}{x}\cdot\dfrac{1}{x}=-y\cdot\dfrac{1}{x}=-\dfrac{y}{x}$

Answer (A)

4 0

3 years ago