Answer:
<u>Hanna is 8 years old.</u>
Step-by-step explanation:
Hanna = x
Tina = 4x
Sum = 40.
Hanna =?
Hanna + Tina = 40
4x + x = 40
5x = 40
x = 40/5
x = <u>8</u>.
Hanna is <u>8 years</u> old.
Answer: I think it is E sorry if I am wrong Step-by-step explanation: she returned to the same place so it going backwards (subtracting)
An = a1 + (n-1)*d
n = term to find = 30
a1 = first term = 20
d = common difference = 2
a30 = 20 + (30 - 1) * 2
a30 = 20 + 29 * 2
a30 = 20 + 58
a30 = 78
sn = (n (a1 + a30)) / 2
s30 = (30(20 + 78) / 2
s30 = (30(98) / 2
s30 = 2940/2
s30 = 1470 <===
Answer:
-x^2 +3x -11
Step-by-step explanation:
(-3x^2 + 4x) + (2x^2 − x − 11)
Combine like terms
-3x^2 +2x^2 +4x -x -11
-x^2 +3x -11
