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mart [117]
2 years ago
15

. In a class of students the ratio of the number of students who like to play football and the number of students who like to pl

ay volleyball is 5:3. If the number of students who like volleyball only is 15 and the number of students who like football only is 35, then a. Find the number of students who like both games​
Mathematics
1 answer:
andreyandreev [35.5K]2 years ago
6 0

Answer:

https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-ratios-prop-topic/intro-to-ratios/v/ratios-intro

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miles has 25 coins In his pocket. Some are Nichols and some are dimes. He has a total of $1.65 how many of each type of coin doe
Leni [432]

▪ Answer:

n = 17

d = 8

▪ Step-by-step explanation:

Hi there !

1 nickel = 5c

1 dime = 10c

$1.65 = 165c

n + d = 25 => n = 25 - d

5n + 10d = 165

replace n

5(25 - d) + 10d = 165

125 - 5d + 10d = 165

5d = 165 - 125

5d = 40

d = 8 (dimes)

n = 25 - d

n = 25 - 8

n = 17 (nickels)

Good luck !

7 0
3 years ago
Mr. McBride ordered 6 cheese pizzas and 7 pepperoni pizzas and paid $153.50 for his son's birthday party. He realized he was goi
Marat540 [252]

Let x = cost of one cheese pizza.

Let y = cost of one pepperoni pizza.

Set up a system of equations.

6x + 7y = 153.50

2x + 2y = 47.00.

Multiply the second equation by -3

6x + 7y = 153.50

-6x - 6y = -141.00.

Add the equations together

y = $12.00.

Plug 12 into one of our original equations.

2x + 2(12) = 47.

Simplify the left side.

2x + 24 = 47.

Subtract 24 from each side.

2x = 23.

Divide each side by 2

x = $11.50

In conclusion, one pepperoni pizza costs $12.00

8 0
3 years ago
A square base a side length of x+3. What is its area
zepelin [54]
Well it would be (x+3)(x+3)
using the FOIL method you end up with:
x^2 + 6x + 9

:D
6 0
3 years ago
Which is equivalent?
olga_2 [115]

Answer:

A

Step-by-step explanation:

Given

\frac{x}{\sqrt{2} }

Multiply numerator/ denominator by \sqrt{2} to rationalise the denominator

= \frac{x\sqrt{2} }{\sqrt{2}(\sqrt{2})  }

= \frac{x\sqrt{2} }{2} → A

8 0
2 years ago
Suppose that 13 inches of wire costs 78 cents.
Fed [463]

Answer:

I believe that the answer is 6 inches

3 0
2 years ago
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