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VLD [36.1K]
3 years ago
5

(15) The ratio of boys to girls at the school is 3:5. If there are 160 students at 1 point the school, how many of them are girl

s? (Do not include any words in your answer.) Your answer​
Mathematics
1 answer:
elixir [45]3 years ago
4 0

Answer:

100

Step-by-step explanation:

160 * (5/8) = 100

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If 1⁄50 of an amount is 12, what is 1⁄20?
Alika [10]
You start by changing both the a common denominator, this case it would be 100 so it’s 2/100 and 5/100, since 1/50 and 2/100 is the same, each 1/100 is equal to “6” and you have 5/100, which is EQUAL TO 30
4 0
2 years ago
What is an equation of the line that passes through the points (3,4) and (-4, -3)?
azamat

Answer:

y=x+1

Step-by-step explanation:

1) <u>Find the </u><u>slope</u>

m=-3-4/-4-3

m=-7/-7

m=1

2) <u>Use </u><u>y</u><u>=mx+</u><u>c</u>

<u>by </u><u>using </u><u>the </u><u>point </u><u>(</u><u>3</u><u>,</u><u>4</u><u>)</u>

<u>4</u><u>=</u><u>1</u><u>(</u><u>3</u><u>)</u><u>+</u><u>c</u>

<u>4</u><u>=</u><u>3</u><u>+</u><u>c</u>

<u>c=</u><u>1</u>

3) <u>The </u><u>answer</u>

y=x+1

8 0
2 years ago
A shirt originally cost $39.38, but it is on sale for $31.50. What is the percentage decrease of the price of the shirt? If nece
seraphim [82]

Answer:

20%

Step-by-step explanation:

1. subtract the new price from the original price

39.38-31.50=7.88

2. divide the difference by the original number

7.88 ÷ 39.38=.2001

3. multiply this number by 100

(.2001)100=20%

5 0
3 years ago
Solve the equation: <br> Two times n plus twenty-eight equals ninety-six.
just olya [345]

2n + 28 = 96 [Two times n plus twenty-eight equals ninety-six.}

You need to get n by itself, so you first subtract 28 on both sides

2n + 28 - 28 = 96 - 28

2n = 68    Divide 2 on both sides

n = 34

3 0
2 years ago
Read 2 more answers
A charter airline finds that on its Saturday flights from Philadelphia to London, all 120 seats will be sold if the ticket price
Nataliya [291]

Answer:

a) P=3(120-s)+200

b) 215 \leq P \leq 290

Step-by-step explanation:

For this case we can use a linear model to solve the problem.

s) Create an equation to express the increase on the price tickets and the number of seats sold

s number of seats, if w analyze the info given the number of seats after increase the price is given by 120-s.

And let P the price for the ticket. So after the increase in ticket price the expression for the increase is P-200.

We have an additional info, for each increase of $3 the number of setas decrease 1. And the equation that gives to us the price change in terms of the increase of price is:

P-200=3(120-s)

So then our linear equation is given by:

P=3(120-s)+200

b) Over a certain period, the number of seats sold for this flight ranged between 90 and 115. What was the corresponding range of ticket prices?

So for this case we just need to replace the limits into the linear equation and see what we got:

P_L=3(120-90)+200=290

P_U=3(120-115)+200=215

So the corresponding range of ticket prices is:

215 \leq P \leq 290

4 0
2 years ago
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