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4 years ago

Sara has $1.30 less than double what Billy does. Sara has $53.72. How much money does Billy have?

Mathematics

1 answer:

lilavasa [31]4 years ago

6 0

Answer:

Billy has $27.51

Step-by-step explanation:

First let's set up an equation to solve this problem.

Assign a variable to Billy's amount. Let's make it x.

Then we just interpret the problem and solve:

2x - 1.30 = 53.72

+1.30 +1.30

----------------------------

2x = 55.02

(Divide by 2 on both sides)

----------------------------

x = $27.51

2x = Billy's amount doubled

2x - 1.30 = Taking away 1.30 from double Billy's amount

53.72 = Sara's amount

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2 years ago

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3 years ago

A group of married couples takes an IQ test. The average husband's IQ is 105 with an SD of 15 and the average wife's IQ is 110 w

Aloiza [94]

Answer:

Wife' s IQ = 100

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Step-by-step explanation:

We are given the following information in the question:

Husband:

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Mean = 110

SD = 10

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Standardizing the scores, we get:

Formula:

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So,

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3 years ago

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klasskru [66]

Answer:

x=12

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Step 1: Flip the equation.

9^x=282429536481

Step 2: Solve Exponent.

9^x=282429536481

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3 years ago

Sara has $1.30 less than double what Billy does. Sara has $53.72. How much money does Billy have?​

Sara has $1.30 less than double what Billy does. Sara has $53.72. How much money does Billy have?