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Vera_Pavlovna [14]
3 years ago
6

Jenny's aunt wants to buy a mix of almonds and pecans as a birthday gift for Jenny. She wants to buy 6 pounds of nuts in total a

nd spend $50. If almonds cost $7 per pound and pecans cost $9 per pound, how many pounds of pecans should Jenny's aunt buy?
Mathematics
2 answers:
Lady bird [3.3K]3 years ago
8 0

Answer: Jenny's aunt should buy 4 pounds of pecans.

Step-by-step explanation:

Let x represent the number of pounds of almonds that Jenny's aunt should buy.

Let y represent the number of pounds of pecans that Jenny's aunt should buy.

She wants to buy 6 pounds of nuts. This means that

x + y = 6

If almonds cost $7 per pound and pecans cost $9 per pound and she wants to spend $50, it means that

7x + 9y = 50- - - - - - - - - - - - -1

Substituting x = 6 - y into equation 1, it becomes

7(6 - y) + 9y = 50

42 - 7y + 9y = 50

- 7y + 9y = 50 - 42

2y = 8

y = 8/2

y = 4

x = 6 - y = 6 - 4

x = 2

adell [148]3 years ago
5 0

Answer:

She should buy 4 pounds of pecans.

Step-by-step explanation:

9*4=36

$50-$36=$14

14/7=2pounds of almonds

2+4=6pounds of nut in total

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3

Step-by-step explanation:

Choose a variable to represent the number to be added to 5 and 3.

\frac{5+x}{3+x}=\frac{4}{3}

"Cross-multiply."

3(5+x)=4(3+x)\\\\15+3x=12+4x\\\\15=12+x\\\\3=x

Check:  The ratio of 5+3 to 3 + 3 is 8:6, equal to the ratio 4:3.

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Answer:

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3 years ago
Find the area of the regular polygon
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area = 44.0467 \: cm {}^{2}

<h3>step by step explanation </h3>

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● now finding the area of regular polygon,

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Hope it's helps you

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Cynthia Besch wants to buy a rug for a room
77julia77 [94]

The length and width of the rug is 20 and 11 feet respectively

The given parameters;

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To learn more about area of a rectangle visit:

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