Question

Will mark as brainliest if correct

Answer 1

Answer:

Step-by-step explanation: 2 x2 =4

i am guessing it means 2 to the power of 2

Answer 2

Answer:

$2\log _{10}\left(z\right)=4 : z=100$

Step-by-step explanation:

$2\log _{10}\left(z\right)=4$

Divide both sides by 2:

$\frac{2\log _{10}\left(z\right)}{2} =\frac{4}{2}$

Simplify:

$\log _{10}\left(z\right)=2$

Use the logarithmic definition: If  $\log _{a}\left(b\right)=c$ then $b=a^c$

$\log _{10}\left(z\right)=2 \Rightarrow \:z=10^2$

$z = 10^2$

Simplify:

$z =100$

Final answer:

$z=100$

Hope I helped, if so may I get brainliest and a thanks?

Thank you, have a good day! =)