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2 years ago

3x+7*4x-9 i need to find the fraction

Mathematics

1 answer:

Alexxandr [17]2 years ago

7 0

Hello!☺

$Answer:\boxed{31x-9}$

$Explanation:$

$3x+7\times4x-9$

Let's start off by simplifying:

$3x+28x+-9$

Now combine like terms:

$(3x+28x)+(-9)\\31x-9$

$31x-9$ is your answer.

Hope this helps!☺

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A certain NYC taxi driver has decided to start charging a rate of r cents per person per mile. How much, in dollars, would it co

katrin2010 [14]

Answer:

$\frac{3xr}{200}$

Step-by-step explanation:

A certain NYC taxi driver has decided to start charging a rate of r cents per person per mile

rate is cents . convert it in to dollars

1 cent = 1/100 dollars

r cents = r/100 dollars

Each people travels x miles

cost is $\frac{r}{100} \cdot x$

For 3 people the cost is

$3\frac{r}{100} \cdot x$

Discount is 50%, so we divide by 2

$\frac{3\frac{r}{100} \cdot x}{2} =\frac{3xr}{200}$

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3 years ago

Of the 12 clients who had their hair cut at Reagan's salon last month, 3 had black hair. Considering this data, how many of the

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Answer:

if it is 12:3 so you need to find 20:x

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Step-by-step explanation:

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2 years ago

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2 years ago

What is the benchmark fraction of 7/10 x 16

Tomtit [17]

Lets change "16" by its to 16/1 .. since nothing can't help support 16 by itself when it is going into 7/10

Now that we change that ... your problem becomes 7/10 × 16/1

7/10 × 16/1 = 11 1/5

Because
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Now lets go. to how we solve the for the answer

112/10 = 11 1/5

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2 years ago

How to solve 6x + y= -5, -6x + 12y=96 using elimination and does it have no solution or many solutions?

Alika [10]

Answer:

x = -2

Step-by-step explanation:

Arrange 6x + y= -5, -6x + 12y=96 vertically:

6x + y= -5

-6x + 12y=96 Now combine like terms:

--------------------

13y = 91

Solving for y by dividing both sides by 13: y = 7

Find x by substituting 7 for y in the second equation: -6x + 12(7) = 96

Then -6x = -84 + 96, or:

-6x = 12, and so x = -2

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2 years ago