Answer:
0.0002
Step-by-step explanation:
0.00021 is a 2 significant figure .after the decimal point the zero can be counted as a significant figure or not ,it depends
That's a trapezoid,
Answer: 32
But say we didn't know the formula. We can chop out the 4 by 4 square and we have two 45/45/90 triangles side 4 left over, so two 4 by 4 squares,
A = 2(4)(4) = 32
We can think of this as 12 by 4 rectangle with two 4 by 4 right triangles chopped out:
A = 12(4) - 2(1/2)(4)(4) = 48 - 16 = 32
Answer: C
Step-by-step explanation:
10(4x+3)-9x
40x+30-9x
31x+30
I think the answer is A