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2 years ago

10

A cashier has three more dimes than nickels and twice as many nickels as quarters find the number of each kind of coin if the to

tal value of the coins is 3.05

1 answer:

galina1969 [7]2 years ago

5 0

Answer:

123

Step-by-step explanation:do mth

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On the coordinate plane, point P is located at (3, y) and point Q is located at (1, -4). The distance between

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y = 23, -31

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3 years ago

Hi! Answer this please!

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Draw a model to represent the ratio 1 to 3.Describe how to use the model to find an equivalent ratio.

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3 years ago

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The swimming team has competed in 45 races this season. They have won 30 races so far. How many races will the team need to win

tatuchka [14]

Answer:

15 races

Step-by-step explanation:

The team has competed in 45 and has won 30. So the success rate is:

Success rate is:

$Sccess\ rate=r= \frac{30}{45}*100\\ =66.7\ percent$

We have to find the number of races the team needs to win for 75% success rate

Which means that

$r = \frac{30+x}{45+x} = 0.75\\$

We have to solve the equation for x

$\frac{30+x}{45+x}=0.75\\ 30+x = 0.75(45+x)\\30+x=33.75+0.75x\\x-0.75x=33.75-30\\0.25x=3.75\\x=\frac{3.75}{0.25}\\ x=15$

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4 0

3 years ago

Billy wanted to write a ratio of the number of apples to the number of peppers in his refrigerator. He wrote 1:3. Did bully writ

Ludmilka [50]

Answer:

Billy is incorrect. The ratio of the number of apples to the number of peppers is 3:1

Step-by-step explanation:

See the attached figure to better understand the problem

Let

x ----> the number of apples

y ----> the number of peppers

we have

$x=3\ apples$

$y=1\ peppers$

The ratio of the number of apples to the number of peppers is equal to

$\frac{x}{y}$

substitute

$\frac{3}{1}$

therefore

Billy is incorrect. The ratio of the number of apples to the number of peppers is 3:1

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3 years ago

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