Answer:
it is A.
Step-by-step explanation:
this should be A.
if it isn't sorry
First, you have to find the area of the rectangular swimming pool (A1), which has <span>10 feet long and 6 feet wide. The area of a rectangle is:
A=A1=LxW
L=10 ft
W=6 ft
When you substitute these values into the formula, you obtain:
</span>
A1=LxW
A1=(10 ft)(6ft)
A1=60 ft²
The area of the Andrea’s backyard (A2) is 400 ft², therefore, the<span> area of Andrea’s backyard, not including the swimming pool (A3), is:
A3=A2-A1
A3=400 ft</span>²-60 ft²
A3=340 ft²
<span>
What is the area of Andrea’s backyard, not including the swimming pool?
The answer is: T</span>he area of Andrea’s backyard, not including the swimming pool, is 340 feet²
Answer: 20%
Step-by-step explanation:
The probability that a randomly selected marble will be pink can be found by the formula:
= Number of pink marbles / Number of total marbles
= 4 / 20
= 20%
<em>There is a 20% chance that if you pick a marble, it will be pink. </em>
Answer:
The sum of 7 and x.
Step-by-step explanation:
PLS GIVE BRAINLIEST
times both sides by 2x
x(x+2)=2(4)
x²+2x=8
minus 8 both sides
x²+2x-8=0
factor
what 2 numbers multiply to -8 and add to 2
-2 and 4
(x-2)(x+4)=0
set to zero
x-2=0
x=2
x+4=0
x=-4
x=-4 and 2
