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arsen [322]
4 years ago
15

Find x.

Mathematics
1 answer:
ZanzabumX [31]4 years ago
6 0

Use the Pythagorean theorem:



x^2+38^2=42^2\\\\x^2+1444=1764\ \ \ \ |-1444\\\\x^2=320\to x=\sqrt{320}



Answer:


b.\ \sqrt{320}\ or\ appx\ 17.9

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If the equation of the line is y=-5.9x+91.9 . Which statement is false?
solong [7]

Answer:

. The slope of the line indicates that test score and the time spent watching tv are negatively correlated

5 0
3 years ago
Ebony earned scores of 72 70, 81, 99, and 88 on five math tests. Determine her
Minchanka [31]

Let it be x

\boxed{\sf Average=\dfrac{Sum\:of\:terms}{No\:of\:terms}}

\\ \sf\longmapsto \dfrac{72+70+81+99+88+x}{6}=83

\\ \sf\longmapsto \dfrac{410+x}{6}=83

\\ \sf\longmapsto 410+x=498

\\ \sf\longmapsto x=498-410

\\ \sf\longmapsto x=88

6 0
3 years ago
A group of friends went to a sporting event. It cost $32 for each of them what was the total cost for all of them to get in
topjm [15]
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8 0
3 years ago
3. Simplify.<br><br> 312⋅312 <br><br> 4. Rewrite n√xm<br><br> using a rational expression.
Dmitry_Shevchenko [17]

Answer:


Step-by-step explanation:

Left

As near as I can tell, the question is x^(1/2) * x^(1/2) = The bases are the same, so all you do is add the powers.

x^(1/2 + 1/2) = x^1 which is just x.

Right

The is another one where the work is hard to show. The numerator (m) of the fraction is the power and the denominator (n) is the root. That sentence is all the work there is.

So you would write \sqrt[m]{x^{n} } = x^{\frac{m}{n} }


6 0
3 years ago
Read 2 more answers
100 equals 15 minus x divided by 5
zloy xaker [14]
The answer is -485. 

To find this we first need to get rid of the 5 in the denominator. 

100 = \frac{15 - x}{5}

So we multiply each side by 5. 

 500 = 15 - x

Now we need to get rid of the 15. So we subtract 15 from both sides. 

485 = -x

Then since our x is negative, we need to divide by -1. 

-485 = x
7 0
3 years ago
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