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frozen [14]
3 years ago
11

The sum of twice a number and seven is 13. Find the number.

Mathematics
1 answer:
Furkat [3]3 years ago
3 0

Answer:

<h2>The answer is 3</h2>

Step-by-step explanation:

Let the number be x

The statement

twice a number is written as

2x

The sum of twice a number and seven is written as

2x + 7

The result is 13

So we have

2x + 7 = 13

Subtract 7 from both sides

That's

2x + 7 - 7 = 13 - 7

2x = 6

Divide both sides by 2

That's

\frac{2x}{2}  =  \frac{6}{2}

We have the final answer as

<h2>x = 3</h2>

Hope this helps you

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3 years ago
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ira [324]

Answer:

I believe this is the answer you are looking for:

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Step-by-step explanation:

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3 years ago
3(6d-24)=6(12+3d)<br> i need help
Alexxandr [17]

Answer:

No solutions

Step-by-step explanation:

Let's solve your equation step-by-step.

3(6d−24)=6(12+3d)

Step 1: Simplify both sides of the equation.

3(6d−24)=6(12+3d)

(3)(6d)+(3)(−24)=(6)(12)+(6)(3d)(Distribute)

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18d−72=18d+72

Step 2: Subtract 18d from both sides.

18d−72−18d=18d+72−18d

−72=72

Step 3: Add 72 to both sides.

−72+72=72+72

0=144

Answer:

There are no solutions.

5 0
3 years ago
Find the first partial derivatives of the function. f(x, y) = ax + by/ cx + dy
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Dimensions definition
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You just have to multiply by 40 and convert to centimetres.

2 x 40 = 80
1.5 x 40 = 60

So the original painting is:
80cm by 60cm
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3 years ago
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