The relation between a and s is given to be:
a = 640s
where,
a = number of acres
s = number of square miles
We are to find the number of acres for 7.5 square miles.
This means, s = 7.5
Using the value in the formula, we get:
a = 640 x 7.5 = 4800 acres
So the answer to this question is option B
Answer:
x^2+x+1
Step-by-step explanation:
Your welcomeeee
Answer:
Karina is correct
Step-by-step explanation:
<em>See attached</em>
<u>Area that Karina cleaned up:</u>
- 1/2*(6-0)(9-2) = 1/2*6*7 = 21
<u>Area that Petty cleaned up:</u>
As we see Karina cleaned up more area than Petty, so she is correct
Answer:
15a² + 21a + 19 = 0
Step-by-step explanation:
Given
(4a + 3)² = (a + 5)(a - 2)
(4a + 3)(4a + 3) = (a + 5)(a - 2 ) ← expand both sides using FOIL
16a² + 24a + 9 = a² + 3a - 10 ( subtract a² + 3a - 10 from both sides )
16a² - a² + 24a - 3a + 9 + 10 = 0 ← collect like terms
15a² + 21a + 19 = 0
