Answer:
x²+8x+7
Step-by-step explanation:
x²+7x+x+7
Answer:
x = 9/8
Step-by-step explanation:
You would use proportions in this case.
9/9+x = 1/x
9x = 9 + x
8x = 9
x = 9/8
Answer:
place your dots on the grid
Step-by-step explanation:
for example r would beeee uhm 3 y x 2
Answer:
1) 
2) 





Step-by-step explanation:
The Pythagorean Theorem is:

Where a is the hypotenuse and b and c are the legs.
The missing side lenght is one of the legs, then you must solve for one of them. Therefore, this is:

MEASURE OF ANGLE:
Keep the identities on mind:



Susbstitute values, then:






According to the Ti 83:
MAD for Dataset 2 is 1.4444
And the ratio is 5/4