Answer:
x = -9
Step-by-step explanation:
let the number = x
So x ÷ -3 = x + 12
Mulitply both sides by -3: x = -3x -36
Add 3x to both sides: 4x = -36
Divide both sides by 4: x = -9
Both the heads and tails will have a probability of 0.5 with a fair coin. ... TO find probability that foe the 7th toss head appears exactly 4 times.
the formula for volume of a prism is base x height
Answer:
9 years ago.
Step-by-step explanation:
Dotty is 51 years old and Esmerelda is 23 now.
Now, x years ago the age of Dotty was (51 - x) years and the age of Esmerelda was (23 - x) years.
Assume that x years ago Dotty was 3 times Esmerelda's age.
So, we can write the equation as
3(23 - x) = 51 - x
⇒ 69 - 3x = 51 - x
⇒ 69 - 51 = 3x - x
⇒ 18 = 2x
⇒ x = 9 years.
Therefore, 9 years ago Dotty was 3 times Esmerelda's age. (Answer)
Answer:
Volume =
1 πr2h
3
=
1 ×π×382×20
3
= 30243.065278558 centimeters3
rounded the answer is A
Step-by-step explanation:
