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andrezito [222]
3 years ago
7

Find the product mentally. (2j + 7)(2j - 7)

Mathematics
1 answer:
Gwar [14]3 years ago
7 0


4j^2 -14j +14j - 49

4j^2 - 49

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Add them all together: 36
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2 years ago
At Wallys school 30% of the student are in 8th grade if there are 470 students total find the number of 8th grade students
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30%*470=141 (So the number of students in 8 grade is 141)

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3 years ago
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simon makes 30 cakes gives 1/5 of the cakes to sali. He gives 10% of the 30 cakes to jane what fraction of the fake cakes does h
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Total number of cakes made by Simon = 30 cakes.

Number of cakes gave to Sali = 1/5 Of total cakes = 1/5 * 30 = 6 cakes.

Number of the cakes gave to Jane = 10% of 30 cakes

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Therefore, 10% of 30 cakes = 0.10 times 30 = 3 cakes.

Total number of cakes left = Total cakes made - Cakes gave to Sali - Cakes gave to Jane = 30-6-3

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21 cakes left our of 30 cakes.

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7/10.

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8 0
3 years ago
69✖️2[8+12-10✖️2+(7-5)-1]-6*
Paul [167]
69×2 [8+12-10×2+ (7-5) -1] -6 69×2 [8+12-10×2+2-1] -6 69×2 [8+12-20+2-1] -6 69×2 [20-20+2-1] -6 69×2 [0+2-1] -6 69×2 [1] -6] 138 [1] -6 138-6 132 I believe this is ur answer.
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3 years ago
What is the value of (−12)3? Question 1 options: 16 −16 18 −18<br>PLZ ANSWER ASAP
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The value of (-12)3 is -36

5 0
3 years ago
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