Answer:
A =136 cm^2
Step-by-step explanation:
The area of a trapezoid is given by
A = 1/2 (b1+b2) *h where b1 and b2 are the lengths of the bases and h is the height
A = 1/2( 22+12) *8
A = 1/2 ( 34)*8
A =136 cm^2
It should be Answer D. I hope this helps. I also hope you have a great day!!!
Exact Form:
√15/4 -1/3
Decimal Form:
0.63491250
Just replace x^2+4 with a
factor out on left side
(x^2+4)^2+32=12(x^2+4)
replace x^2+4 with a
a^2+32=12a
minus 12a both sides
a^2-12a+32=0
solve
factor
what 2 numbers mulitply to get 32 and add to get -12
-4 and -8
(a-4)(a-8)=0
set each to zero
a-4=0
a=4
a-8=0
a=8
remember
a=x^2+4
so
4=x^2+4
0=x^2
0=x
8=x^2+4
4=x^2
+/-2=x
x=-2, 0, 2
The answer is 50/9.
Explanation:
To convert mixed numbers to improper fractions, I remember MAD (multiply, add, denominator).
Step 1 (M): Multiply the denominator (9) by the whole number (5). You should get 45.
Step 2 (A): Add the numerator (5) to the number you just got (45). 45 + 5 = 50.
Step 3 (D): Take the number you have (50) and put it over the denominator (9). Your final answer is 50/9.