Ok so remember
x^n means x times itself n times
example
x^2=x times x
x^4=x times x times x times x
so
a^3
a=7
a^3=a times itself 3 times therefor
a^3=a times a times a
subsitute 7 for a
7^3=7 times 7 times 7
7^3=343
Answer:
elimination method
Step-by-step explanation:
2) 4y+4x=8;y+2x=4
4y+4x=8. ------(1)
y+2x=4 -------(2)
multiply equation (1) by 2 and (2) by 4 to eliminate x
8y+8x=16
4y+8x=4
Answer:
5.28835
Step-by-step explanation:
Given:
The figure of a parallelogram.
To find:
The measure of angle Z.
Solution:
We know that, the consecutive interior angles of a parallelogram are supplementary angles, it means there sum is 180 degrees.
In the given figure angle W and angle Z are supplementary angle. So,




Adding 9 on both sides, we get




Now,




Therefore, the correct option is C.
Answer:
Danny did not reverse the symbol.
Hence, the correct answer is: 
Step-by-step explanation:
Given the inequality

We know that when we multiply both sides by -1, the 'inequality' gets reverse.
i.e.


Divide both sides by 8


Therefore, Danny did not reverse the symbol.
Hence, the correct answer is: 