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elena-s [515]
3 years ago
5

What is the right answer?

Mathematics
1 answer:
OverLord2011 [107]3 years ago
4 0
3/5 because she is sharing with 3 sisters. So there is 4 people
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Which equation is true when r = 7 ?
jeka57 [31]

Answer:

7 = 49 ÷ r

Step-by-step explanation:

To find the equation that is true when r = 7, we need to find a number after the equals sign that is a multiple of 7.

Multiples of 7:  

7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77...

Therefore, the only answer option in which the number after the equals sign is a multiple of 7 is:

7 = 49 ÷ r

To prove this, input r = 7 into each of the equations:

   6 = 30 ÷ r

⇒ 6 = 30 ÷ 7

⇒ 6 ≠ 4.285... ← incorrect!

   7 = 54 ÷ r

⇒ 7 = 54 ÷ 7

⇒ 7 ≠ 7.714... ← incorrect!

   7 = 49 ÷ r

⇒ 7 = 49 ÷ 7

⇒ 7 = 7 ← correct!

   9 = 72 ÷ r

⇒ 9 = 72 ÷ 7

⇒ 9 ≠ 10.285... ← incorrect!

8 0
2 years ago
What is the area of circle C when the radius is 0.4cm
Solnce55 [7]
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7 0
2 years ago
Gabriel has a stack of nickels that is 0.72 inch tall. The thickness of a nickel is 0.08 inch. How many nickels does Gabriel hav
olganol [36]
Gabriela has a stack of 9 nickels.
0.72 x 9 = 0.08
7 0
3 years ago
Please help 100 points!!!
kaheart [24]

Answer:

first one is 3 only second one is 2 only

Step-by-step explanation:

5 0
3 years ago
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Name four values of b which make the expression factorable:<br> X^2 - 3x + b
sveta [45]
X= 9/4 if finding the perfect square trinomial

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3 years ago
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