2x-5=11
2x-5+5=11+5
2x=16
x=16/2
x=8
Answer:
Step-by-step explanation:
y - 1 = -25(x - 5)
y - 1 = -25x + 125
y = -25x + 126
Answer to the first triangle: 15To solve this we will use the Pythagorean theorem
Pythagorean theorem formula:

Lets do the first triangle.
17 is the hypotenuse, so its going to replace c in the formula.
8 is the height and it is going to replace a in the formula.
a is what we are trying to find, so our b in the equation is going to be the unknown.





now we know that the missing length in the first triangle (a) is 15Can you solve the Other one?
Just comment if you need help on the other one.
Answer:
336
Step-by-step explanation:
8 (12 + 30)
Follow PEMDAS order of operations.
Calculate within parentheses. (12 + 30)
12 + 30
12 + 30 = 42
= 42
=8 * 42
Multiply and divide left to right
8 *42
8 * 42 = 336
= 336
2x+x=36
Kim's Sister age
2x+x=36 Add "x and 2x"
3x=36 Divide both sides by 3
÷3 ÷3
x=12
Kim's sister is 12 years old
Soo....
Multiply that by two to get Kim's age
12•2=24 Kim is 24 years old.