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Paraphin [41]
3 years ago
10

Jamar is factoring 90x-15. Find his mistake and correct it

Mathematics
2 answers:
Ymorist [56]3 years ago
6 0
You cant factor by 9 because 15 cant be factored by 9. you can factor it by 5 and get 18x - 3  might want to check my answer
STatiana [176]3 years ago
5 0

Answer: 15(6x - 1)

Step-by-step explanation: Jamar had a great start, by figuring out the factors of both 90 and 15; of which he picked 15.

What he got wrong was failing to do same to the value 15 exactly what he did to 90x.

To put it right, here is how to go about it:

90x - 15

Factor of both 90 and 15 is 15

Therefore:

15 (6x - 1)

This is correct. You can as well expand the result to check.

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Answer:

Step-by-step explanation:

Since we know that Ivan finished all his science problems (3) we know that there are only math problems remaining

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isolate the variable

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So Ivan was assigned a total of 50 math problems

(Note*) since there are 40 math problems finished 40/50 is equal to 4/5. Just a tip if you don't want to do the whole calculation

Hope this helps!

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