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vodomira [7]
3 years ago
9

Find the value of each variable. Round to the nearest tenth. How does the measure of angle x compare to the measure of angle z?

Justify.

Mathematics
1 answer:
monitta3 years ago
6 0

Answer:

z = 47.2°

w = 42.8°

y = 42.8°

x = 47.2°

Step-by-step explanation:

found altitude ('h') first:  6/h = h/7;  h = \sqrt{42}

found <em>base</em> by using Pythagorean Theorem:

7² + (\sqrt{42})² = c²

c = \sqrt{91}

found <em>angle z</em> using Rule of Sines:

sin 90 / \sqrt{91} = sin z / 7

arcsin z = 7 / \sqrt{91} = 47.2°

found <em>angle w</em> by adding 90 and 47.2, then subtracting from 180 to get 42.8°

found <em>angle y</em> by subtracting m∡z from 90° to get 42.8°

found <em>angle x </em>by adding 90 and 42.8°, then subtracting from 180

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galina1969 [7]

• The following formula can be used to find the slope of a line:

m=\frac{y_2-y_1}{x_2-x_1}

These points are on the line:

(x_1,y_1);(x_2,y_2)

Given the following points:

\mleft(-4,7\mright);(-1,-3)

Then, you can set up that:

\begin{gathered} y_2=-3_{} \\ y_1=7 \\ x_2=-1 \\ x_1=-4 \end{gathered}

Therefore, substituting values into the formula and evaluating, you get:

\begin{gathered} m=\frac{-3-7}{-1-(-4)} \\  \\ m=\frac{-10}{-1+4} \\  \\ m=-\frac{10}{3} \end{gathered}

• As you can notice, the slope is negative. Therefore, you can determine that it is decreasing.

Therefore, the answers are:

• Slope of the line:

m=-\frac{10}{3}

• It is decreasing.

4 0
1 year ago
Find two numbers if their sum is 7.2 and their difference is 2.7
Klio2033 [76]

Answer:

4.95 and 2.25

Step-by-step explanation:

x+y=7.2

x-y=2.7

Add equations

x+y + x-y= (2x-y+y)=2x

7.2+2.7=9.9

Therefore 2x=9.9 x=9.9/2=4.95

x=4.95

x+y=7.2

4.95+y=7.2

y=7.2-4.95=2.25

y=2.25

8 0
3 years ago
Read 2 more answers
Suppose you deposit $134,000 into an account paying 8% simple annual interest, and that you won't touch the
Sergeu [11.5K]
134,000x 0.08= 10,720= the money you get every year from interest
1,000,000/10,720= 93.28... or 93 years
7 0
3 years ago
PLEASE PLEASE HELP IF YOU KNOW!! THANK YOU
Vladimir [108]
I'm guessing this is what the question is asking?

5 0
3 years ago
a circle pizza with a diameter of 10 inches. The pizza is in a square box with side lengths of 14 inches. In square inches, how
julsineya [31]

Answer:

117.45 in^2

Step-by-step explanation:

Given data

Diameter of pizza= 10in

Radius of pizza=10/2=  5in

Lenght of pizza box= 14in

Area of pizza= πr^2

A= 3.142*5^2

A= 3.142*25

A= 78.55 in^2

Area of pizza box= L^2

A= 14^2

A= 196 in^2

Hence the empty space is

=196-78.55

=117.45 in^2

5 0
3 years ago
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