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klemol [59]
2 years ago
14

If a : b= 5:8 and a = 20, find b.

Mathematics
2 answers:
ioda2 years ago
7 0

Answer:

32

Step-by-step explanation:

a:b = 5:8 means a/b = 5/8

20/b = 5/8

Cross multiplication will give you b = 32

Talja [164]2 years ago
6 0

Answer:

b = 32

Step-by-step explanation:

20/5 = 4

So for finding b, we have to multiply 8 * 4 which is 32.

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In a survey of 347 people, the data presented in Table 3
Alex787 [66]

Answer:

347 people relating person male 3 given

7 0
2 years ago
Mrs. Johnson wants to take her class to the fair. The bus will cost $200 and the fair charges $4 per student. She has a $300 bud
omeli [17]

Answer:

This is simple,

Step-by-step explanation:

If the bus costs 200$ and the fair charges 4$ per students that means you have to do this:

300$ budget - 200 of the bus = 100$ left

and if $4 per student:

100 divided by 4 = 25

she can take 25 students

Hope this helps!

5 0
3 years ago
How do I do this please help me?
TEA [102]
4. First find how much sauce is used for 1 person:

2 ÷ 7 = 0.285714285714286

0.285714285714286cups of sauce will make spaghetti for one person.

0.285714285714286 • 210 = 60

60 cups of sauce for 210 people.

5. Found out how much he read in one minute:

40 ÷ 50 = 0.8

0.8 • 80 = 64

In 80 minutes, she will read 64 pages.

6. Found out how much he earns after one month:

9 ÷ 6 = 1.5

1.5 • 12 = 18

18 • 2 = 36

After two years, he will have 36 days of vacationing time



7 0
3 years ago
Lincoln went to the grocery store and purchased cans of soup and frozen dinners. Each can of soup has 250 mg of sodium and each
Ludmilka [50]
We can solve with a system of equations, and use c for the amount of cans of soup and f for the amount of frozen dinners.


The first equation will represent the amount of sodium. We know the (sodium in one can times the number of cans) plus (sodium in one frozen dinner times the number of dinners) is the expression for the total sodium. We also know the total sodium is 4450, so:


250c + 550f = 4450


The second equation is to find how many of each item are purchased:


c + f = 13


Solve for c in the second equation:


c = 13 - f


Plug this in for c in the first equation:


250(13-f) + 550f = 4450


3250 - 250f + 550f = 4450


300f = 1200


f = 4


Now plug the value for f into the second equation:


c + 4 = 13


c = 9


The answer is 9 cans of soups and 4 frozen dinners.


6 0
3 years ago
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The points shown on the graph represent the numbers in a geometric sequence.
sergejj [24]
D is the answer just took test
8 0
2 years ago
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