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Elan Coil [88]
2 years ago
13

Twice a number, added to seven, is the same

Mathematics
1 answer:
eduard2 years ago
6 0

Answer:

Your number is -10

Hope this helps :)

Step-by-step explanation:

Let x be the number

 

Twice a number is 2x

Added to 7 means + 7 so 2x + 7

Is means =

2x+7=

 

At this point I have to assume you mean

"is the same as three subtracted from THE SAME number"

Otherwise, rather than a number, we end up with the

equation of a line....

 

2x + 7 = x - 3   subtract x from both sides

x + 7 = -3        subtract 7 from both sides

x = -10

 

Your number is -10

 

Check:  2x+7 = x-3

           2(-10) + 7 = -10-3

           -20+7 = -13

            -13 = -13

            The answer fits the parameters of the problem.

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30 \div \frac{1}{3} 30÷ 3 1 ​
ioda

Answer:

<h2>90</h2>

Step-by-step explanation:

30 \div \frac{1}{3} \\\\\mathrm{Convert\:element\:to\:fraction}:\quad \:30=\frac{30}{1}\\=\frac{30}{1}\div \frac{1}{3}\\\\\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{b}\div \frac{c}{d}=\frac{a}{b}\times \frac{d}{c}\\=\frac{30}{1}\times \frac{3}{1}\\\\\mathrm{Apply\:rule}\:\frac{a}{1}=a\\=30\times \:3\\\\=90

7 0
3 years ago
Read 2 more answers
What is the volume of the prism
Scilla [17]
Hey there :)

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Volume = base x height of prism
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We are given:
The base = 8 in
The height = 15 in
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Apply the formula,
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Your final answer will be the last option

6 0
3 years ago
Hard math question please dont paste a link
const2013 [10]

Answer:

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Step-by-step explanation:

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Mariulka [41]

Answer:

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Step-by-step explanation:

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3 years ago
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Mamont248 [21]

Answer:

See below.

Step-by-step explanation:

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