Answer:
150 • r + 62 = 40
Step-by-step explanation:
Just count, its really simple...its hard to explain using a keyboard tho...sorry i wasnt much help
37 + x = 2(14 + x)
Explanation:
subtract both sides by 28
9 + x = 2x
subtract both sides by x
9 = x
The equation would be x+3x(10+2x)=142
The sides are 22cm , 54cm and 66 cm.
Answer:
The solution of y² - 1 = 15 is +4 and -4
Step-by-step explanation:
Given
y² - 1 = 15
Our solution goes thus;
Make y² the subject of formula
y² = 15 + 1
Add 15 to 1
y² = 16
Take square roots of both sides
√y² = √16
y = √16
Note that the square root of 16 is either +4 or -4 because +4 * +4 = 16 and -4 * -4 = 16; So, we replace √16 with ±4 which means + or -4
y = ±4
y = +4 and -4
Hence, the solution of y² - 1 = 15 is +4 and -4
