The number of x-ray machines that were sold last year by Khybar inc. is C. 157.
<h3>How to calculate the value?</h3>
From the information given, the the company can sell an x-ray machine which cost $508.17 and the commission was $79,558.59.
Therefore, the number of x-ray machines that were sold last year by Khybar inc. will be:
= 79558.59/508.17
= 156.5 = 157
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Answer: She needs to babysit for 3 hours
Step-by-step explanation: 3 x $7.50 = $22.50. $22.50 + $3 = $25.50
The pounds of alloy that contains 26% copper that would be used is 23.42 pounds.
The pounds of alloy that contains 69% copper that would be used is 29.58 pounds.
<h3>What are the linear equations that represent the question</h3>
0.26a + 0.69b = (53 x 0.5)
0.26a + 0.69b = 26.50 equation 1
a + b = 53 equation 2
Where:
- a =pounds of alloy that contains 26% copper
- b = pounds of alloy that contains 69% copper
<h3>How many pounds of each alloy should be in the third alloy?</h3>
Multiply equation 2 by 0.26
0.26a + 0.26b = 13.78 equation 3
Subtract equation 3 from equation 2
12.72 = 0.43b
b = 12.72 / 0.43
b = 29.58 pounds
a = 53 - 29.58 = 23.42 pounds
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I got 2/3 .... Is it correct? Seems weird...
Answer:
12
Step-by-step explanation:
15×0.8= 12
you're multiplying the total number of questions with the score as a decimal
