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ale4655 [162]
3 years ago
10

^lets start off easy☺️^

Mathematics
1 answer:
butalik [34]3 years ago
7 0

Answer:

mary=10 jack=15

Step-by-step explanation:

After 4 years Mary (x+4), Jack's age (x+5) + 4.

sum of the ages after 4 years :(x+4) + (x+5) +4=33 

Simplifying the equation:

2x+13 = 33 ----->> 2x=20----->>>>x = 10 Mary's age

10 + 5 = 15 which is Jack's age. 

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Step-by-step explanation:

In the survey was found that 4 out of 5 preferred creamy over chunky peanut butter.

Then the relative frequency is:

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We also could multiply these numbers by 100% to obtain the percentage forms:

0.8*100% = 80%

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Then we can expect that the number of people that prefers creamy peanut butter is:

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3 years ago
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stepan [7]

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