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2 years ago

The ratio of boys to girls in a classroom is 7 to 11. If

Mathematics

1 answer:

Zepler [3.9K]2 years ago

6 0

Answer:

77 girls

Step-by-step explanation:

becasue 49 divided by 7 is 7. so you just multiply 11 by 7. ANd that will get you 77

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a group of 4 friends shares 2 packs of gum equally . there are 8 pieces of gum in each pack .which set of equations shows how ma

Anna11 [10]

Answer:

4 pieces of gum

Step-by-step explanation:

7 0

3 years ago

Lucille has a collection of more than 500 songs on her phone that have a mean duration of 215 seconds

Elena-2011 [213]

Answer:

Step-by-step explanation:

The sample mean is given by dividing the standard deviation by the squareroot of SRS

Given standard deviation of 35 and SRS of 49, we know that the squareroot of 49 is 7 ie √49=7

By substituting the given values we can obtain the sample mean as follows.

sample mean=35/√49=35/7=5

The sample mean for the given question is hence 5

8 0

3 years ago

The licene fee for a car which costs $9,200 is $82. at the same rate, what is the licence fee for a car that cost $9,900.

vichka [17]

Step 1: Assign variable for the unknown that we need to find.

Let 'x' be the licence fee for a car that cost $9,900.

Step 2: Set up a proportion based on the given information.

$\frac{x}{9900} =\frac{82}{9200}$

Step 3: Solve for x

To get x alone we need to undo whatever is done to x. So multiply 9900 on both sides of the equation.

$\frac{9900x}{9900} =\frac{9900*82}{9200}$

Simplifying fraction on both sides of the equation, we get...

$x=88.24$

Conclusion:

<u>$88.24 is the licence fee for a car that cost $9,900.</u>

7 0

3 years ago

Find the nth term of this sequence -2 3 8 13 18

harina [27]

The nth term is 5n-7

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2 years ago

Bryce read 15 books last year. this year he read 21. what was the percent increase?

tangare [24]

Answer:

Step-by-step explanation:

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3 years ago