Answer:
3.125 pounds of beef
Step-by-step explanation:
Set up a proportion where x is the number of pounds of beef needed to feed 10 people:
=
Cross multiply and solve for x:
12.5 = 4x
3.125 = x
So, to feed 10 people, she will need 3.125 pounds of beef
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Answer:
first one is D and the second one is B
Step-by-step explanation:
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Current price is $14.98.
$14.98/.50 = $29.96. This was the price after the 20% mark down. Now calculate the original as follows:
$29.96/.80 = $37.45. This is the original price before all the discounts.
If y is substitute into either of the original equation. The solution as an ordered pair are: x=-2; y=3.
<h3>The solution as an ordered pair</h3>
x + 3y= 7 equation 1
x+2y=4 equation 2
Solving for y
x+3y-(x+2y)=7-4
x+3y-z-2y=7-4
3y-2y=7-4
y=7-4
y=3
Substitute y=3 into equation 2
x+2y=4
x+2×3=4
x+6=4
Collect like terms
x=4-6
x=-2
Therefore the solution as an ordered pair are: x=-2; y=3.
Learn more about solution as an ordered pair here:brainly.com/question/1515438
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