3 years ago

What makes this question wrong?: When you divide a number by

Mathematics

2 answers:

Mazyrski [523]3 years ago

3 0

The answer is
B) Twice the original number. Why? because you said.

const2013 [10]3 years ago

3 0

The answer is B because when you divide by 2 you get half of the number. But when you divide by 1/2 you do the opposite, so you multiply by the reciprocal.

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I am not sure how sigma notation works, can somebody explain how to solve this? It isn't the second choice.

Masja [62]

Answer:

first answer is correct

Step-by-step explanation:

Hello, we want to write 2 + 4 + 6 + ... + 20

for n = 1, 2n = 2*1 =2

for n = 2, 2n = 2*2=4

for n = 3, 2n=2*3=6

etc

$\displaystyle \sum_{n=1}^{10} {2n} = 2*1 + 2*2 +2*3+2*4+...+2*10=2+4+6+8+...+20$

thanks

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2 years ago

Please refer to the image

Dafna11 [192]

I do not know what to answer here, you did not include the question itself.

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2 years ago

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pickupchik [31]

Answer:

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Step-by-step explanation:

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2 years ago

Please help! I'm having problems with deciding if 2.80 would be 2 or less or 2 or more.

Gekata [30.6K]

2.80 is more than 2, i would round it.

So sorry if this is wrong :(

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3 years ago

Using the numbers and symbols, solve 7x = 42

spin [16.1K]

Answer:

you currently have the value of x × 7, you need to divide it by 7 to find the value of x.

42 ÷ 7 = 6

Step-by-step explanation:

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3 years ago