42% of what is 63
0.42x = 63
x = 63/0.42
x = 150
There are 150 dancers in the school
Answer:
x = 4
Step-by-step explanation:
Given
- 8 - x = x - 4x, that is
- 8 - x = - 3x ( add 3x to both sides )
- 8 + 2x = 0 ( add 8 to both sides )
2x = 8 ( divide both sides by 2 )
x = 4
Answer: last option.
Step-by-step explanation:
You need to remember that a product is the result obtained by multplying the factors.
For example, in the following multiplication, the number 110 is the product and this is obtained by multiplying the factors 10 and 11:
Then, being 11 the product, then you can know that:
"x" is a factor and 5 is the other factor.
Therefore, the algebraic equation that could represent the sentence "The product of a number and five is 11", is:
Answer:
yes its shows a proportional relationship
Step-by-step explanation:
i love khan academy
Answer:
£90
Step-by-step explanation:
Let M = Malachy's share
and P = Paul's share
and B = Brian's share.
We have three conditions:
(1) M = 2P
(2) P = 3B
(3) M + P + B = 150
Solve for B:
Substitute (2) into (3) (4) M + 3B + B = 150
(5) M + 4B = 150
Substitute (2) into (1) M = 2(3B)
(6) M = 6B
Substitute (6) into (5) 6B + 3B + B = 1 50
(7) B = 15
Solve for P:
Substitute (7) into (2) P = 3×15
(8) P = 45
Solve for M:
Substitute (8) into (1) M = 2×45
M = 90
Malachy gets £90.
