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3 years ago

Evaluate the expression. 5^2. what is the value of the expression?

Mathematics

2 answers:

Bas_tet [7]3 years ago

8 0

Answer:

Step-by-step explanation:

$5^2 = 5\times 5\\=25\\$

Serga [27]3 years ago

5 0

Answer:

Step-by-step explanation:

5^2 means 5 multiplied by itself 2 times, so therefore: 5x5

5x5 = 25 so 5^2=25

Hope this helped!

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Which is the solution to the equation represented by the model below

Kruka [31]

Answer:

Third option, $x=2$

Step-by-step explanation:

By observation, we can infer that

$3x+8=4x+6$ .

Subtract 8 from both sides:

$3x+8-8=4x+6-8$

$3x=4x-2$

Subtract 4x from both sides:

$3x-4x=4x-2-4x$

$-x=-2$

Divide both sides by -1:

$\frac{-x}{-1}=\frac{-2}{-1}$

$x=2$

5 0

3 years ago

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Find all solutions in the region [0,2pi) for the equation cos^2(2x)-sin^2(2x)=0

Lynna [10]

$\cos^{2}(2x)-\sin^{2}(2x)=0$
$\rightarrow \sin^{2}(2x)=\cos^{2}(2x)$
$\rightarrow \frac{\sin^{2}(2x)}{\cos^{2}(2x)}=1$
$\rightarrow \tan^{2}(2x)=1$
$\rightarrow \tan(2x)=\pm 1$

$2x$ can range anywhere in $[0, 4\pi)$
So:
$\rightarrow 2x=\frac{\pi}{4}, \frac{3\pi}{4}, \frac{5\pi}{4}, \frac{7\pi}{4}, \frac{9\pi}{4}, \frac{11\pi}{4}, \frac{13\pi}{4}, \frac{15\pi}{4}$
$\rightarrow x=\frac{\pi}{8}, \frac{3\pi}{8}, \frac{5\pi}{8}, \frac{7\pi}{8}, \frac{9\pi}{8}, \frac{11\pi}{8}, \frac{13\pi}{8}, \frac{15\pi}{8}$

4 0

3 years ago

-7=21+x help please thankyou

serg [7]

Move the 21 to the other side and change the sign

-7-21=x
x=-28

hope this helps

4 0

3 years ago

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What’s the answer????

barxatty [35]

Answer:

i dont know if u know the equation for volume but it is length times width times height SO you would multiply 8.25 times 3 times 5