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Veseljchak [2.6K]
3 years ago
11

What’s the answer for this question?

Mathematics
1 answer:
Reil [10]3 years ago
7 0
First, you would need to determine how much it would cost her if it was three for $1 or seven for 42. 

Three for $1:
21 ÷ 3 = 7
7 × $1.00 = $7.00

Seven for $2:
21 ÷ 7 = 3
3 × $2.00 = $6.00

Now, all you would need to do is find the difference. 
$7.00 - $6.00 = $1.00

Jackie would have saved A. $1.00. 

I hope this helps!
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4 0
4 years ago
If y = kx, and x = 3 and y = 15, calculate k.
kenny6666 [7]

Answer:

k = 5

Step-by-step explanation:

Since the equation is y = kx and x equals 3 while y equals 15, in order to solve this equation we are going to have to substitute the variables with their answers:

x = 3

y = 15

15 = 3k

Now we divide 3 from both 3x and 15 to segregate the variable x:

15/3 = 3k/3

5 = k

Now to check our work we are going to substitute 5 for the variable k, 3 for the variable x and 15 for the variable y.

y = kx

15= (5)(3)

15 = 15

Tada, I hope this helps you!

6 0
3 years ago
Read 2 more answers
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Step-by-step explanation:

120 Degrees - Obtuse

6 0
3 years ago
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kari74 [83]
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7 0
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Svetach [21]

Answer:

Q=33/10-r/10 R=33−10q

Step-by-step explanation:

Espero que sea correcto para ti también puedes hacerme más inteligente si es correcto

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