Answer:
Step-by-step explanation:
The formula of an area of a trapezoid:
<em>b₁, b₂</em> - <em>bases</em>
<em>h</em><em> - height</em>
We must use the Pythagorean theorem:
<em>subtract 64 from both sides</em>
We have <em>b₁ = 6 + 6 = 12m</em>, <em>b₂ = 6m</em> and <em>h = 8m</em>.
Substitute:
4. Is positive 63
I think so
Answer:
The answer is d.
Step-by-step explanation:
As we know, sin x= cos (90°-x)
sin 18° = cos (90°-18°)
= cos 72°.
Similarly, sin 72°= cos (90°-72°)
= cos 18°
But, sin 55°= cos (90°-55°)
= cos 35°
Answer:
The answer is C. (a + -a = 0 )
Step-by-step explanation:
"The additive inverse of a number a is the number that, when added to a, yields zero"
The answer is 8 because if you divide 52 by 4 it gives 13, do the same to the top and you get 8