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3 years ago

The difference of twice a number and 3 is 11

1 answer:

7 0

Let's break this down:

The difference: Something's gotta be subtracted
Twice a number: So 2 times a number, or n
and 3: So we gotta subtract 2n and 3
is 11: The final answer is 11
So altogether is:

2n - 3 = 11

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Solve the system by subtitution y = 3x + 18 y = 5x

elena-14-01-66 [18.8K]

Answer:

x=9

Step-by-step explanation:

y=3x+18=5x

thus 3x+18=5x

subtract 3x from both sides 18=2x

simplify for x x=9

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3 years ago

What is $45.27 plus 16%?

Ghella [55]

Answer:

$52.51

Step-by-step explanation:

16% of 45.27 is 7.24

45.27 + 7.24 is $52.51

Hope this helps!

Stay safe!!

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3 years ago

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How to reduce the fraction 12/15

FinnZ [79.3K]

4/5 because 12/3=4 and 15/3=5

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3 years ago

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What is the following product? Sqr5x^8y^2 sqr10x^3 sqr12y

PSYCHO15rus [73]

Step-by-step explanation:

$\sqrt{5 {x}^{8} {y}^{2} } \times \sqrt{10 {x}^{3} } \times \sqrt{12y} \\ \\ = {x}^{4} y \sqrt{5} \times x \sqrt{10x} \times 2 \sqrt{3y} \\ \\ = 2 {x}^{5} y \sqrt{5 \times 10x \times 3y} \\ \\ = 2 {x}^{5} y \sqrt{5 \times 5 \times 2x \times 3y} \\ \\ = 2 {x}^{5} y \times 5\sqrt{ 2x \times 3y} \\ \\ = 10 {x}^{5} y \sqrt{6xy} \\$

4 0

3 years ago

1/7 rounded to 2 decimal places

dmitriy555 [2]

Answer:

0.14

Step-by-step explanation:

1/7 = 0.142

Since 2<5 the answer is 0.14.

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3 years ago