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kirill [66]
2 years ago
9

The ratio of boys to girls in a class is 3:4. There are 35 students in the class. How many more girls than boys are there?

Mathematics
1 answer:
lisov135 [29]2 years ago
4 0

Answer:

5

Step-by-step explanation:

sum the parts of the ratio, 3 + 4 = 7 parts

Divide the number of students by 7 to find the value of one part of the ratio

35 ÷ 7 = 5 ← value of 1 part of the ratio, then

3 parts  3 × 5 = 15 ← number of boys

4 parts = 4 × 5 = 20 ← number of girls

20 - 15 = 5

There are 5 more girls than boys

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Evaluate the expression when a is -5 and y is 7
sasho [114]

a - 5y

when a = -5 and y = 7 :

( - 5) - 5(7) =  - 5 - 35 =  - 40

Answer: -40

ok done. Thank to me :>

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2 years ago
To raise funds for uniforms and travel expenses, the soccer team is holding a car wash in a part of town with a lot of car and t
KengaRu [80]

Answer:

47

Step-by-step explanation:

$460 + $90 = $550

4 x $20 = $80

$550 - $80 = $470

$470/10 = 47

they have to wash 47 cars

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3 years ago
Charles wants to find out if the students in foreign language classes spend more time in class speaking in English or in the for
Ganezh [65]

Answer:

English always in class

6 0
3 years ago
Solve the equation 3x-2y =7, x+2y= -3​
swat32

Answer:

  • x=1
  • y= -2

Step-by-step explanation:

  • 3x-2y =7
  • x+2y= -3
  • 4x=4
  • x=4/4
  • x=1
  • 3x-2y=7
  • 3(1)-2y=7
  • 3-2y=7
  • -2y=7-3
  • -2y=4
  • 2y=-4
  • y=-4/2
  • y= -2
  • Verify solution
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  • 2y=-3-1
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  • y= -4/2
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3 0
2 years ago
Read 2 more answers
A jacket that is regularly sold for $49.95 is on sale for 25% off. What is the sale price of the jacket?
Gnoma [55]

First, find 25% of 49.95. Turn 25% into a decimal by dividing by 100.

25% ⇒ 0.25

Now, multiply 0.25 by 49.95.

0.25 × 49.95 = 12.46

25% of 49.95 is 12.46, so subtract 12.46 from 49.95.

49.95 - 12.46 = 37.49

<h2>Answer:</h2>

<u>The discounted price of the jacket is </u><u>$37.49</u><u>.</u>

Now find 8% of 37.49.

8% ⇒ 0.08

Multiply 0.08 by 37.49.

0.08 × 37.49 = 2.99

<h2>Answer:</h2>

<u>The tax is </u><u>$2.99</u><u>.</u>

To find the full price, add 37.49 and 2.99 together.

37.49 + 2.99 = 40.48

<h2>Answer:</h2>

<u>The final cost is </u><u>$40.48</u><u>.</u>

4 0
3 years ago
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