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nika2105 [10]
3 years ago
11

I need help I don’t understand how to do this

Mathematics
2 answers:
hichkok12 [17]3 years ago
4 0

Answer:

your answer is 7 for this problem

tatuchka [14]3 years ago
3 0

Answer:

the missing side is 7

Step-by-step explanation:

30/5=6

24/4=6

42/?=6

42/6=7

?=7

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You need a 65% alcohol solution. On hand, you have a 50 mL of a 30% alcohol mixture. You also have 70% alcohol mixture. How much
DIA [1.3K]

Answer:

  350 mL

Step-by-step explanation:

Let q represent the quantity (in mL) needed of the 70% solution. Then the total amount of mixture will be q+50 milliliters. The total amount of alcohol in the mixture will be ...

  0.70q +0.30(50) = 0.65(50 +q)

  .05q = 17.5 . . . . . . subtract (0.65q +1.50)

  q = 350 . . . . . . . . . divide by 0.05

You will need 350 mL of the 70% solution.

5 0
3 years ago
Which situation is modeled by the graph?<br> Height<br> Time
Ymorist [56]

Answer:23

Step-by-step explanation:

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3 years ago
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Vitek1552 [10]
12 - 7 is 5. you can count down 7 times from 12 like: 12, 11, 10, 9, 8, 7, 6, 5.
3 0
3 years ago
Read 2 more answers
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kykrilka [37]

Answer:

69

Step-by-step explanation:

Step 1:

483 ÷ 7 = 69

Step 2:

69 × 7 = 483

Answer:

69

Hope This Helps :)

6 0
4 years ago
I need help fast with the first question in the page which is the find algebraically in R
ch4aika [34]

Answer:

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using the quadratic formula

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3 0
3 years ago
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