Answer:
D) x2 + 7x - 60
Step-by-step explanation:
i just got it right on usa test prep tbh
<span>(x + 2) (x - 2) = x^2 – 4
answer
</span><span>B.x – 2</span>
Answer: 10.3 s
Step-by-step explanation:
Given
The height of the arrow is given by
At and
When arrow hits ground, h becomes 0 i.e.
Neglecting the negative value of t
So, the arrow hits the ground after 10.30 s
5x+5x = 11
11-7=4
10x = 11
11/10 = 1.1
x=1.1
Answer:
The first term of the geometric series is 1
Step-by-step explanation:
In this question, we are tasked with calculating the first term of a geometric series, given the common ratio, and the sum of the first 8 terms.
Mathematically, the sum of terms in a geometric series can be calculated as;
S = a(r^n-1)/( r-1)
where a is the first term that we are looking for
r is the common ratio which is 3 according to the question
n is the number of terms which is 8
S is the sum of the number of terms which is 3280 according to the question
Plugging these values, we have
3280 = a(3^8 -1)/(3-1)
3280 = a( 6561-1)/2
3280 = a(6560)/2
3280 = 3280a
a = 3280/3280
a = 1