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soldi70 [24.7K]
3 years ago
14

If 12 times a number is 40 more than 2 times the number,the number is

Mathematics
2 answers:
babymother [125]3 years ago
3 0

Answer:

x = 6.67

Step-by-step explanation:

12x = 40 \times 2 \\  \frac{12x}{12}  =  \frac{80}{12}  \\ x = 6.67

icang [17]3 years ago
3 0

Answer:

PROOF:

6*5-12=5+13

30-12=18

18=18

Step-by-step explanation:

3) X-Y=5 OR X=Y+5

(X+5)+12=2(Y-8)

Y+5+5+12=2Y-16

Y-2Y=-16-5-5-12

-Y=-38

Y=38 ANS.

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Pachacha [2.7K]

Given:

In triangle DEF, HG is parallel to DF.

To find:

The value of x.

Solution:

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\angle DE F\cong \angle GEH          (Common angle)

\angle EDF\cong \angle EGH          (Corresponding angle)

\Delta DE F\sim \Delta GEH             (By AA property of similarity)

We know that corresponding sides of similar triangle are proportional.

\dfrac{DE}{GE}=\dfrac{DF}{GH}

\dfrac{9+(x+5)}{x+5}=\dfrac{12}{6}

\dfrac{x+14}{x+5}=2

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3 years ago
*please help word problem* Adam and Barb had a used book sale over the weekend. Adam sold 4 hardcover books and ten paperbacks a
vekshin1

Let us assume charge for a hardcover book = $ h

And charge for a paperback = $ p.

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So, we can setup an equation by using above statement.

4h + 10p = 64        -------------equation(1)

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Let us solve equation(1) and eqation (2) by elimination method.

Multiplying first equation by -5 and second equation by 4 and adding, we get

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Plugging p=4 in first equation.

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4h = 24.

Dividing both sides by 4, we get

4h/4 = 24/4

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Therefore, they charge $6 for a hardcover and $4 for a paperback.

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3 years ago
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Answer:

Here is yours.

But next time, pls give it a try,bro!

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Answer:

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Step-by-step explanation:

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