The length of each side = sqrt 200 m
By the pythagoras theorem
D^2 = sqrt(200)^2 + sqrt(200^2) = 200 + 200 = 400 (where D = diagonal)
D= sqrt400 = 20 m
The answer is B
Answer:
Equation:
.
It would take Martina 37 hours to earn $518
Step-by-step explanation:
✍️An equation that shows a proportional relationship between the time she spends babysitting (x) and amount of money she earns for babysitting (y) can be represented as
, where k = constant of proportionality.
Let's find k using any of the pairs given in the table of values. Let's use (1, 14).
Substitute x = 1, and y = 14 into
, and find k.


Substitute k = 14 into
.
✅The equation would be:
.
✍️Using the equation, we can find how many hours Martina needs to work in order to earn $518 she wants to use to buy a new phone.
Simply, substitute y = 518 in
.

Divide both sides by 14


✅Thus, it will take Martina 37 hours to earn $518
Answer:
8x²+5x+1
Step-by-step explanation:
3x²-5x+12
5x²+ x - 11
________
3x²+5x²= 8x²
}
5x+x =5x
}
12-11 =1
=
8x²+5x+1
2x-13+13=13-8x+14+13
2x=40-8x
2x+8x=40-8x+8x
10x=40
X=4
First, we can do distributive property.
-3(n + 8) = 15
-3 x n = -3n, -3 x 8 = -24
So we have, -3n + -24 = 15
Minus -24 on both sides of the equal sign.
-3n + -24 - -24 = 15 - -24
-3n = 39
Divide 3 on both sides.
-3n/-3 = 39/-3
n = -13
Hope i helped!! :D