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Andrei [34K]
4 years ago
11

HELP PLZ I NEED IT

Mathematics
1 answer:
andrey2020 [161]4 years ago
5 0

Answer: True

Step-by-step explanation:

Let's find proportion at skating rink

Ratio => girls : boys

Ratio => 12 : 14

Ratio => 6 : 7

Let's find proportion at birthday party

Ratio => girls : boys

Ratio => 18 : 21

Ratio => 6 : 7

Both ratios are equal. So, proportional.

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At the beach, Nardia collected triple the number of seashells that Pierre did. Together, they collected 52 seashells. Which equa
MrRa [10]

Answer:

13 seashells

Step-by-step explanation:

p=number of seashells pierre collected

p+3p=52

4p=52

p=13

13 seashells

7 0
3 years ago
Read 2 more answers
If john makes a contribution to a charity fund at school, the average contribution size will increase by 50% reaching $75 per pe
Sonja [21]

Answer:

Z= 75*6 -250=200

So then the correct answer is B. $200.

Step-by-step explanation:

Notation

Let X be the average contribution size before John makes his contribution.

Let Y be the total contribution size before John makes his contribution.

Let Z be John's contribution.

We know that for this case $ 75 represent the original average amount before the contribution with 50% increase so we can set up the following equation in order to find the original average amount

1.5 X = 75

And solvong for X we got:

X = \frac{75}{1.5}= 50

Now we can find the total contribution before the donation with the following proportion:

\frac{50}{1}= \frac{Y}{5}

Y = 250

And then with the formula of average taking in count the 6 values we can find the size of donation Z like this:

\frac{Y+Z}{6}= 75

\frac{250+Z}{6}= 75

Z= 75*6 -250=200

So then the correct answer is B. $200.

5 0
3 years ago
Dennis is joining an online video game service. He will pay $25.50 to purchase each game plus a one-time foe of $4500 to join
insens350 [35]

Answer:

I am pretty certian it is A

Step-by-step explanation:

You add the x to 25.50 because it is unknown how many games he will buy and add the one time pay of 4,500 to enter the service/company

So it is y= 25.50x + 45

6 0
3 years ago
Read 2 more answers
If you could put wings on any species of animal, what animal would you choose?
denis-greek [22]

Answer:

Humans

Explanation:

So I can have wings :)

5 0
2 years ago
Read 2 more answers
2*2<br><img src="https://tex.z-dn.net/?f=%20%5Ccos%28300%29%20" id="TexFormula1" title=" \cos(300) " alt=" \cos(300) " align="ab
ankoles [38]

Step-by-step explanation:

\cos(300 \degree)  \\  \\  = \cos(360 \degree - 60\degree)  \\  \\  = \cos( 60\degree) \\  \\  =  \frac{1}{2}  \\  \\  \huge \orange{ \boxed{ \therefore \: \cos(300 \degree)  = \frac{1}{2}  }}

7 0
3 years ago
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