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inna [77]
3 years ago
9

What is the value of x if 6x+7=13x-9

Mathematics
2 answers:
lana66690 [7]3 years ago
8 0
6x + 7 = 13x - 9
-6x         -6x
7 = 7x - 9
+9       +9
16 = 7x
x = 2.28571428571
m_a_m_a [10]3 years ago
7 0
6x + 7 = 13x - 9
7 + 9 = 13x - 6x
16 = 7x
16/7 = x....or 2 2/7 = x
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The product of 3 and a number is the same as 10 less than twice the number
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Hello!

First, create a variable representing the number. In this case, let's just say n = the number.

Now, solve this by side. You can tell which is on which side of the equation by the words "is the same as". Anything before that is on one side, and anything after is on the other.

Left side: "The product of 3 and a number"

Here, we get our first side. The product means when two numbers are multiplied together. Thus, the product of 3 and a number would be 3 and a number multiplied together, or 3n.

Right side: "10 less than twice the number"

Finally, our last side. What we want to do first is "twice the number". This is because this happens first, even though the words are ordered differently. Twice the number means the number doubled, or *2. Therefore, multiply 2 and n together, to get 2n.

Next, add the "10 less" part. To do this, subtract 10 from 2n. We then get 2n - 10.

Finally, put the equation together. Take 3n and 2n-10, and create an equation. We get 3n = 2n-10.

Therefore, we have our final answer, or 3n = 2n - 10.

Hope this helps!

8 0
3 years ago
frank made $156.00 12 hours of work. at the same rate, how many hours would he have to work to make $221?
uranmaximum [27]

Answer:

17 hours

Step-by-step explanation:

We first need to find the hourly rate:

156 / 12 = 13

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Now we can divide 221 by 13, this gives us 17.

That means that Frank will have to work 17 hours to make $221.

Hope this helps!

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Step-by-step explanation:

Simple first we will add previous balance and total deposit

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nataly862011 [7]

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8 0
2 years ago
Quinn is determining the area of a trapezoid. His work is shown below.
SOVA2 [1]

Answer:

A = a + b / 2 x h

Step-by-step explanation:

Area is equal to side one plus side two divided by two then you multiply by the height of the trapezoid. Hope this helps!

8 0
2 years ago
Read 2 more answers
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