Answer:
63 cm²
Step-by-step explanation:
the area of ∆YXZ = 7 × 3² = 7×9 = 63 cm²
Answer:
x = 14
Step-by-step explanation:
For complementary angles, the sum of two angles is equal to 90 degrees.
We have,

ATQ,

Taking like terms together,
4x+x =90-30+10
5x = 70
x = 14
So, the value of x is 14.
Answer:
a and b
Step-by-step explanation:
just trust =) ive done this before
Answer:
1. 0
Step-by-step explanation:
I don't know the even number one. (−1)^r when r is an odd integer greater than 1 always will equal -1 then -1 + 1 = zero