Answer:37.5% approximately 38%
Step-by-step explanation:
Probability formula= Number of possible outcome/ Total favorable outcome
Number of possible outcome=15
Number of total outcome =40
15/40×100=37.5 approx. 38%
The sum is y(4y − 1) + <span>(y + 5)2 = 4y² -y +y² +25 - 10y = 5y²-11y + 25
the answer is </span><span>5y2 − 11y + 25
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Answer:
Step-by-step explanation:
Answer:
x = ± 
It didn't insert but just look up the quadratic formula.
x = ± root [(b²-4ac]/2a]
Answer:
70 dolls
Step-by-step explanation:
Hello!
The ratio is 5:2, which are division of a whole. They can be represented as 5x and 2x.
Jacky has 5x dolls, and Peter has 2x dolls. They were equal after subtracting 15 dolls from 5x and adding them to 2x.
Equation:
Solve:
- 5x - 15 = 2x + 15
- 5x - 30 = 2x
- 5x = 2x + 30
- 3x = 30
- x = 10
So Jacky has 5(10) dolls, or 50 dolls, and Peter has 2(10) or 20 dolls.
The total sum is 70 dolls.