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Andrew [12]
3 years ago
15

Explain how I would get -7 from dividing -45 from 7 Full explanation gets brainly

Mathematics
1 answer:
lana66690 [7]3 years ago
3 0
If you divide a negative by a positive then you get a negative or if you divide a positive by a negative then you make that number negative
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2x + y = 3
sergejj [24]

Hey there!

First, multiply the second equation by -2 as the problem states. When you multiply the second equation by -2, you get:

-2x+4y=2

Now, add this equation to the first equation in which you simply combine like terms:

2x+y=3

+

-2x+4y=2

=

5y= 5

In conclusion, the correct answer would be the first choice.

4 0
3 years ago
Read 2 more answers
Wendy is on a long road trip. So far, she has driven 125 miles in 150 minutes.
Vikentia [17]

Answer:

Step-by-step explanation:

125 miles / 150 minutes = 300 miles / x       Criss multiply

Notice that the numerators both have the same units -- miles. Proportions should always be set up that way.

125 x = 150 * 300                  Combine the right

125x = 45000                        Divide by 125

x = 45000/125

x = 360 more minutes which is 6 hours.

6 0
2 years ago
What is 4 1/2× 5<br>18 3/4 ×11×5
kolezko [41]
128390 5/8 or 128390.625

3 0
3 years ago
5284 Ib = ________ tn ________ Ib. show your work
Paha777 [63]

Answer:

2 tons and 1824 pounds

Step-by-step explanation:

Ton= 2,000 pounds

We know that 2,000 will go into 5824 twice, resulting in 4,000. Subtract 4,000 from 5,284, and you will have an answer of 1284. 1,284 does not go into a ton, therefore you have a remainder of 1,284 pounds.

4 0
2 years ago
Wendy took a trip from one city to another, a distance of 500 mi. She traveled part of the way by bus, which arrived at the trai
Fynjy0 [20]

<u>Answer- </u>Wendy spent 3 hours on the train

<u>Solution-</u>

The distance between the cities= 500 mi.

She traveled part of the way by bus, and other part by train.

The bus averaged 40 mph, and the train averaged 120 mph.

The entire trip took 6.5 hours.

let d = distance traveled by train

the total distance was given as 500 mi ,

therefore, distance traveled by bus  = (500-d) mi

time = distance/speed

⇒ train traveling time + bus traveling time = 6.5 hrs

⇒ \frac{d}{120} +\frac{500-d}{40} = 6.5

⇒ d + 3(500-d) = 120(6.5)

⇒ d + 1500 - 3d = 780

⇒ 2d = 720

⇒ d = 360  mi

so d = 360 mi by train

⇒ 360/120 = 3 hrs on the train

8 0
3 years ago
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