Answer:
18 units
Step-by-step explanation:
So let's list out the sides.
for the first square let's just call them x
for the second square then they would be x+5 and x-3
So let's write out their areas we will cal the area of the first one z
x*x = z
(x+5)*(x-3) = z+21
since z = x^2 we can set up the second equation as a quadratic.
(x+5)*(x-3) = x^2 + 21
x^2 - 3x + 5x - 15 = x^2 + 21
But look, the x^2s cancel out
2x - 15 = 21
2x = 36
x = 18
Test it out and see if it fits the description, And if you don't understand anything just let me know so I can explain more.
1. a = 1/2x - 3
2. a = 2x + 7
Answer:
16
Step-by-step explanation:
10 + sqrt(y) = 14
Subtract 10 from each side
10 -10+ sqrt(y) = 14-10
sqrt(y) = 4
Square each side
(sqrt(y)) ^2 = 4^2
y = 16
Answer: Well u would have to divide first and you would get 1 and what is left over would be the numerator which would be 6 and the denominator would stay the same.
Therefore saying that the answer will be 1 6/8
Step-by-step explanation:
3 in = (3 in)/(1/4 in)
= (3)(4)
= 12 ft
3 3/4 in = (3 3/4 in)/(1/4 in)
= (15/4 in)(1/4 in)
= (15)(1)
= 15 ft
Therefore, the actual size of the room is 12 ft x 15 ft = 180 square ft
I think you can handle the reasoning. :D
