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Alexandra [31]
2 years ago
13

PLZ ANSWER !!! QUICKLY

Mathematics
1 answer:
a_sh-v [17]2 years ago
4 0
The answer is 560in^3
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A 25-inch television has a screen that is 15 inches high. How wide is the screen?<br><br> inches
Firdavs [7]

Answer:

20 inches

Step-by-step explanation:

Use the Pythagorean Theorem.

a^2 + b^2 = c^2\\15^2 + b^2 = 25^2\\225 + b^2 = 625\\b^2 = 400\\b = \sqrt{400} \\b = 20

8 0
2 years ago
8+4m=9m-7<br> check solution
ella [17]
8+4m=9m-7 \\\\ 4m-9m=-7-8 \\\\ -5m=-15 \\\\ \boxed{m=\frac{-15}{-5}=3}
4 0
3 years ago
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Given that D, E, and F are the midpoints of their respective sides, which of the following is a true statement?
prisoha [69]

Answer:

e

Step-by-step explanation:

5 0
2 years ago
What is the exact value of cos 45° as found on the unit circle?
Ber [7]
The exact value of cos 45 as per the special triangle would be

Cos 45 = 1/✔️2

Rationalizing the denominator gives

✔️2/2 = 0.707.
4 0
3 years ago
If sec theta = - √30 / 3, find cos theta.<br> if sin(-theta) = -0.97, find cos (π/2 - theta).
Cloud [144]

Step-by-step explanation:

\cos \theta  =  \frac{1}{ \sec\theta }  =  -  \frac{3}{ \sqrt{30} }  =  -  \frac{3 \sqrt{30} }{30}   =  -  \frac{ \sqrt{30} }{10}

\cos( \frac{\pi}{2} -  \theta )=  \cos \frac{\pi}{2}  \cos \theta  +   \sin \frac{\pi}{2}  \sin \theta

Note that

\sin( - \theta) =  -  \sin \theta

\cos \frac{\pi}{2}  = 0 \:  \:  \:  \:  \:  \sin \frac{\pi}{2}  = 1

Therefore,

\cos( \frac{\pi}{2} -  \theta )  = 0.97

5 0
3 years ago
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