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Aleonysh [2.5K]
3 years ago
9

What multiplies to be -63 and adds up to be -18

Mathematics
2 answers:
sergiy2304 [10]3 years ago
8 0
-21 times 3 adds up to -18 and multiplies to -63
vitfil [10]3 years ago
6 0
-21 and +3. Try this on your own!!
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A store is having a sale on walnuts and chocolate chips. For 7 pounds of walnuts and 9 pounds of chocolate chips, the total cost
Jlenok [28]

Answer:

  • Walnuts  cost $1.75, chocolate chips cost $2.75

Step-by-step explanation:

<h3>Let the costs be:</h3>

  • Walnuts - x
  • Chocolate chips - y

<h3>Set equations as per question</h3>

For 7 pounds of walnuts and 9 pounds of chocolate chips, the total cost is $37:

  • 7x + 9y = 37

For 5 pounds of walnuts and 3 pounds of chocolate chips, the total cost is $17:

  • 5x + 3y = 17

<h3>Solve the system by elimination</h3>

Multiply the second equation by 3 and subtract the first equation, solve for x:

  • 3(5x + 3y) - (7x + 9y) = 3(17) - 37
  • 15x + 9y - 7x - 9y = 51 - 37
  • 8x = 14
  • x = 14/8
  • x = 1.75

Find the value of y:

  • 7*1.75 + 9y = 37
  • 12.25 + 9y = 37
  • 9y = 37 - 12.25
  • 9y = 24.75
  • y = 24.75/9
  • y = 2.75
6 0
2 years ago
What is 16.92 x 8.4 how much is the sum.
lana66690 [7]

16.92 × 8.4 = 142.128

This is called the product

6 0
3 years ago
Read 2 more answers
Please help if you know it
Cloud [144]
I am not really that great with that but try googling it, it should pop up somehwere, sorry in advance. 
6 0
3 years ago
Sofia walks from her house to the park.
Olegator [25]

Answer:

4:45

Step-by-step explanation:

What time after 40 minutes gives you 5:25?

If we go back 40 minutes from 5:25, Sofia left her house at 4:45

5 0
2 years ago
A farmer needs to deliver 1,227 pieces of fruit to the farmers market by the afternoon Each crate holds 163 piece of both orange
bogdanovich [222]

Answer

7.53

1,227 then divide that by 163 so

1,227÷163= 7.53 so then you would go

163 and multiply 7.53 and you would get 1,227

6 0
2 years ago
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