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aliina [53]
3 years ago
9

Set up and solve a proportion: On average, I can answer 14 out of 21 questions correctly in a trivia game. Assuming

Mathematics
1 answer:
rjkz [21]3 years ago
6 0

Answer:

20

Step-by-step explanation:

Since this is a ratio problem we first plug in all that we know

14:x

21:30

Now we find a way to get from 21 to 30

The ratio 14:21 can be simplified if we divide each by 7 give us 2:3

Now we plug the new ratio in

2:x

3:30

We get from 3 to 30 by multiplying by 10 so we also multiply 2 by 10 and we get 20

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Find the sum. (9 + 7n) +(-3+ 4c) + (2 + 5m) ​
irga5000 [103]

Answer is in development.

6 0
3 years ago
Hector purchased a 20 ounce bottle of mustard for $2.80. What is the cost of the mustard per ounce?
joja [24]

Answer:

0.14 $

Step-by-step explanation:

Price of 20 ounce bottle of mustard for $2.80.

Price of 1 ounce bottle of mustard for 2.80÷20 $

                                                             = 0.14 $

6 0
2 years ago
Evaluate the expression 36 on top and 3×4 on the bottom
s344n2d4d5 [400]

I chose three because 3*4 is twelve and 36 divided by twelve is three

8 0
4 years ago
A bag of marbles has 6 blue marbles, 5 red marbles and 4 green marbles. What is the ratio probability of pulling a red or green
notka56 [123]

These are the answers

1. 9:15

2. 60%

5 0
4 years ago
Alexander is blocking off several rooms in a hotel for guests coming to his wedding. The hotel can reserve small rooms that can
romanna [79]

Answer:

Small rooms=6

large rooms=10

Step-by-step explanation:

Let the number of small rooms be x

given alexander booked 4 more large rooms than the small rooms.

Therefore the number of large numbers be x+4.

Given each small room can accommodate 3 people.Therefore the total number of people in small rooms are 3x

Given each large room can accommodate 4 people. Therefore the total number of people in large rooms are 4(x+4)

Given total number of people accommodated=58

Total number of guests =number of guests in small rooms + number of guests in large rooms

58=3x+4(x+4)

7x=42

x=6

therefore the number of small rooms =6  and  number of large rooms =10

3 0
4 years ago
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