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artcher [175]
3 years ago
11

The Riddler likes to send messages using the ratio of 5:7 , which is the ratio of puzzles to riddles that he sends. If the Riddl

er sent 20 puzzles last week, how many riddles did he send?
Mathematics
1 answer:
kozerog [31]3 years ago
4 0

Answer:

28 riddles

Step-by-step explanation:

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Find MP………………………………….
devlian [24]

Answer:

MP = 29

Step-by-step explanation:

MP = 17 + 3y

5y + 9 = 17 + 3y

      -9    -9

5y = 8 + 3y

-3y        -3y

2y = 8

2y / 2 = 8 / 2

y = 4

MP = 17 + 3 (4)

MP = 29

5 0
1 year ago
Match each fraction with its equivalent decimal number.
Oksana_A [137]
Changing a fraction to its decimal form can be done by long division method. Dividing the denominator by its numerator will change the fraction into decimal form. Alternatively, you can use a calculator to do that for you. Below are the fractions with their decimal forms listed:

1.) 2/5 = 0.4 (D)
2.) 7/20 = 0.35 (A)
3.) 3/25 = 0.12 (C)
4.) 7/10 = 0.7 (B)

6 0
3 years ago
5. The half-life of Po-210 is 140 days. If the initial mass of the sample is 5
Anit [1.1K]

Answer:

1.25kg

Step-by-step explanation:

useing the problem the half life equation will be:

f(x)=5(0.5)^(x/140)

x is amount of days

so plugging in 280 for x will get 1.25kg

6 0
2 years ago
A plane has to travel 2,800 miles at an average speed of 560 miles per hour. How many hours will it take to reach its destinatio
Kamila [148]

2800/560 = 5

It will take the plane 5 hours

7 0
3 years ago
Read 2 more answers
What is 5-2+(9÷1)×9+0
Anna [14]
The answer is 84 because of process priority
6 0
3 years ago
Read 2 more answers
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