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ch4aika [34]
3 years ago
8

A store is having a sale on almonds and jelly beans. For 3 pounds of almonds and 5 pounds of jelly beans, the total cost is $19

. For 9 pounds of almonds and 7 pounds of jelly beans, the total cost is $35 . Find the cost for each pound of almonds and each pound of jelly beans.
Cost for each pound of almonds: $
Cost for each pound of jelly beans:$
Mathematics
1 answer:
yaroslaw [1]3 years ago
6 0

Answer:

Almond: $7/4 per pound

Jelly Bean: $ 11/4 per pound

Step-by-step explanation:

A: almond

J: jelly bean

3A + 5J = 19 .... multiply 9 each side

27A + 45J = 171 .....(1)

9A + 7J = 35 .....multiply 3 each side

27A + 21J = 105 ....(2)

(1) - (2)    24J = 66

J = 66/24 = 11/4

3A + 5 x 11/4 = 19

3A = 21 / 4

A = 7/4

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Naddik [55]

The rate for the first is 1 job / 35 minutes and for the second is 1 job / 15 minutes.  So combined we get

r = 1/35 + 1/15

3×5×7r = 3 + 7 = 10

r = 10/(105) jobs per minute

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4 0
3 years ago
The product of a number and 9, less 20 is 7
anyanavicka [17]
9x-20=7
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Hope that helps you :)
6 0
4 years ago
Write the expression as a square of a binomial: 9/25a^6b^2-a^4b^4+25/36a^2b^6
OlgaM077 [116]

answer below,

<h2>Hope this helps :></h2><h2 /><h2>From Cambridge</h2><h2 /><h2>please give brainliest!</h2>

5 0
3 years ago
Sarah worked 8 more hours than Paida (algebraic expression) ___
seropon [69]
X+8
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8 0
3 years ago
Please help thank you
Allushta [10]

The average rate of change of credit card is $ 401.79 /year.

<h3>What is Average Rate?</h3>
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<u>Solution</u>

The difference of credit card debt between the year 2006 and 1992 = 8900 - 3275 = $5625

The difference of years between the year 2006 and 1992 = 2006 - 1992 = 14

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2 years ago
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