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Umnica [9.8K]
3 years ago
8

the ratio of seniors to juniors in the math club is 2:3. If there are 21 juniors, how many seniors are in the club?

Mathematics
1 answer:
Bond [772]3 years ago
8 0

Answer:14

Step-by-step explanation:

1. Ratio : 2:3

2. Multiply the number of juniors by the Ratio

(2/3)(21)

3. Solve for answer

Answer: 14

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The ratio of Aziz's money to Osman's money was 2:1 at first. After Aziz spent $10 ratio became 4:3. How much money did each boy
Dvinal [7]

Answer:

Aziz's money was $30

Osman's  money was $15

Step-by-step explanation:

Let

x-----> Aziz's money at first

y-----> Osman's  money

we know that

\frac{x}{y}=\frac{2}{1}

x=2y ------> equation A

\frac{x-10}{y}=\frac{4}{3} -----> equation B

substitute equation A in equation B and solve for y

\frac{2y-10}{y}=\frac{4}{3}\\ \\6y-30=4y\\ \\6y-4y=30\\ \\2y=30\\ \\ y=15

Find the value of x

x=2(15)=30

therefore

At first

Aziz's money was $30

Osman's  money was $15

8 0
2 years ago
What is the slope of the graph y = -25x - 42?​
sweet [91]
-25x is the slope
-42 is the y-intercept
5 0
2 years ago
Read 2 more answers
Billy likes to go cycling.
Agata [3.3K]

Answer:

560 metres

Step-by-step explanation:

80 cm in metres is 0.8 metres.

After 1 revolution any point on the wheel will be back to the original position before moving. 0.8 times 2, which gives us 1.6 metres. In 1 revolution the bike travels 1.6 metres.

Now 1.6 metres times 350 gives us 560.

So the answer is 560 metres.

4 0
2 years ago
10 gallons of gasoline costs $30. The cost of gasoline per gallon is ________ and gallons of gasoline per dollar are ________.
Blababa [14]
2. if the cost of 10 gallons of gasoline is 30 dollars then divide 10 by 10 and divide 30 by 10 to get 1 and 3 so the cost of 1 gallon is $3

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4. if a cleaning service charges $1000 for 20 offices then divide 1000 by 20 and 20 by 20 to have an answer of $50 for every one office.

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6. if the baker ca bake 12 cakes every 45 minutes then he can bake 4 cakes every 15 minutes because divide both 12 and 45 by three so in conclusion the baker can bake 16 cakes every hour.

7. so if you can print 100 pages for $2 then multiply 100 and 2 by two to get 200 pages for $4

8. so to find the answer to this all you need to do is divide 12 by six to fin out that it is 2 apples for $1 and for the other store you divide 21 by seven to find out that it is 3 apples for $1.

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10. if a 0.2 pund package is $4 then a 0.001 pound package is 20 cents.

I hope i got the answers right and that i could help! :)
6 0
2 years ago
What is the solution to the system of equations of linear equations 2x + 4y = 38 and 10x + 3y = 105
nata0808 [166]
<span>A) 2x + 4y = 38
B) 10x + 3y = 105
Multiplying A) by -5
A) -10x -20y = -190 then adding it to B)
</span><span>B) 10x + 3y = 105

-17y = -85
y = 5
x = 9


</span>
6 0
3 years ago
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