How do we solve for -3 (2x-6)=9

Answers

Answer 1

Answer: -6x + 18 = 9
-6x = -9
x = 1,5

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Darnell's car used 8 gallons of gasoline to travel 340 miles. after a mechanic worked on the car, it used 7 gallons of gasoline to travel 350 miles. If the price of the gasoline was approximately $4.00 per gallon, how much lest to the nearst cent per mile, did it cost to run the car after the mechanic worked on it?

Answers

so, after the mechanic worked on it, it only does 7 gallons for 350miles, how many gallons will it be at that rate, for 340 miles then?

$\bf \begin{array}{ccll}gallons&miles\n\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\n7&350\nx&340\end{array}\implies \cfrac{7}{x}=\cfrac{350}{340}\implies \cfrac{7\cdot 340}{350}=x\implies 6.8=x$

well, each gallon is 4 bucks, for 6.8 gallons that'd be 6.8*4.

we already know that before the mechanic worked on it, it was doing 8gallons for the same 340 miles, and at 4 bucks a gallon that'd be 8*4.

how much is her savings?

$\bf \stackrel{\stackrel{\textit{gallons cost}}{\textit{before being fixed}}}{(8\cdot 4)}\qquad -\qquad \stackrel{\stackrel{\textit{gallons cost}}{\textit{after it was fixed}}}{(6.8\cdot 4)}$

A color printer will print 8 pages per minute how many minutes will it take to print a report that has 136 pages

Answers

The given color printer prints 136 pages in 17 minutes with a rate of 8 pages per minute.

Given that,
A color printer will print 8 pages per minute how many minutes will it take to print a report that has 136 pages is to be determined.

What is the rate of change?

Rate of change is defined as the change in value with rest to the time is called rate of change.

Here,
rate of printing = 8 pages / minute
Now, for the printing of 136 pages,
Time = 136 / 8 = 17 minutes

Thus, the given color printer prints 136 pages in 17 minutes with a rate of 8 pages per minute.

Learn more about the rate of change here:

brainly.com/question/13103052

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You would have to divide 8 divided by 136... Here is the picture.

A student has a business selling snowballs during the summer. For each snowball the student sells, they makes a profit of $1.50. On the hottest day of the summer, the student sold 125 snowballs and made a profit of $187.50.Choose a model (equation) in point-slope form {y−y1=m(x−x1)} to represent the profit the student makes, y, based on the number of snowballs sold, x.

y−125=1.5(x−187.5) A

y+187.5=1.5(x+125) B

y−187.5=1.5(x−125) C

y+125=1.5(x+187.5) D

Answers

Answer:

Step-by-step explanation:

The figures above are similar. Find the missing length. Show your work.

Answers

5/3 likr 3/x so 5x=9 and x= 9/5 or 1.8

The scatter plot shows the ages of children and how many stuffed animals they own.What is the range of ages for the cluster?

Answers

the answer is 8 to 10 that is the range of ages for the cluster

The scale on a map is 1 in. = 0.5 mi. The distance between two towns on the map is 5.5 in. What is the actual distance between the two towns?6.25 miles
3.75 miles
2.75 miles
5.50 miles

Answers

In order to determine the actual distance between the two towns, multiply the distance between the two towns in the map, 5.5 in by the scale on the map. It is noted in the map that per inch distance corresponds to 0.5 mi. The product of 5.5 in and 0.5 mi/in is 2.75 miles. Thus, the actual distance between the towns is 2. 75 miles.

Answer:

Actual distance between 2 towns is:

2.75 miles

Step-by-step explanation:

The scale on a map is 1 inch = 0.5 miles

The distance between two towns on the map is 5.5 inch

1 inch= 0.5 miles

5.5 inch= 5.5×0.5 miles

= 2.75 miles

Hence, actual distance between two towns is:

2.75 miles

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Please explain how you got the answer

What is 9/11=?/22 need help with this problem

how would I write an equation for the following problem? Find 4 consecutive even numbers whose sum is 156.