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Lostsunrise [7]
3 years ago
14

Am I doing this right!

Mathematics
1 answer:
Leni [432]3 years ago
4 0
16 thru 23 look wrong and 16 is absolutely wrong. You use this:https://www.mathpapa.com/algebra-calculator.html  to work out the answers and it shows the steps and explains it to you better than I could. Good luck

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25% of 400 is equal to 20% of What?
Bess [88]

Here is your answer:

First find 25% of 400:

  • 400/x=100/25
  • (400/x)*x=
  • (100/25)*x
  • x 400=4*
  • 400/4=x  
  • 100=x  
  • x=100

The answer is "500."

  • 100 ÷ 20%
  • 100 ÷ (20 ÷ 100) =
  • (100 × 100) ÷ 20 =
  • 10,000 ÷ 20 =
  • = 500

Hope this helps!

8 0
3 years ago
Jack's age is three years more than twice his younger brother Jimmy's age If the sum of their ages is at most 18 find the greate
UNO [17]
J + 3 + 2j ≤ 18
3j + 3 ≤ 18
3j ≤ 15
j ≤ 5 
jimmy's age is 5 years or less
6 0
3 years ago
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Kobotan [32]

Answer:

Fraction: 3/10

Decimal: 0.3

Percentage: 30%

Step-by-step explanation:

6 0
3 years ago
John plays basketball at the local gym. The gym charges a monthly membership fee of $15.00, plus each player pays $2.50 per game
Katyanochek1 [597]
Answer:
Step-by-step explanation:
Assuming that for each option, you play the same number of games,x
Let y represent the cost of playing x games using option A
Option A is to buy a membership card and pay $2 every time you go to the gym. The membership card costs $20. It means that
y = 20 + 2x
Let z represent the cost of playing x games using option B
Option B is to pay $4 each time you go. It means that
z = 4x
To determine how many games will be played before cost of option A equal to the cost of option B, we would equate y to z. It becomes
20 + 2x = 4x
4x - 2x = 20
2x = 20
x = 20/2 = 10
It will take 10 games for both to be the same
3 0
3 years ago
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