Answer:
-39
Step-by-step explanation:
just took the quick check
Just use your right angled triangle formula.
A=

Plug n chug
A=

A=71.5
Answer:
-77
Step-by-step explanation:
Multiply 11 x 7 first which gives you 77. And since the Negative sign is before 11, which means the product negative always, it will be -77!
hope this helped!
Answer:
42
Step-by-step explanation:
|--------------1764------------|
| |
2 |-------882-----------|
| |
2 |--------441------|
| |
|------9-----| |----49---|
| | | |
3 3 7 7
From the factor tree we see that

Now we need to find the square root of 1764.
