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hjlf
3 years ago
15

PLEASE HELP DUE NOW!!! WILL MARK BRAINLIEST!!!

Mathematics
1 answer:
Ulleksa [173]3 years ago
3 0

Answer: -10, 10

Step-by-step explanation:

first lets add the two equations. add the x's, add the y's, add the constants on the right.

we get

0x - 1y = -10

so then divide --10 by -1 because we do the opposite operations to both sides

and we get y = 10

now substitute y = 10 into the first equation

-10x - 9(10) = 10

and then we get -10x - 90 = 10

now add 90 to both sides

-10x = 100

divide 100 by -10

x = -10

y = 10

checks out

EPIC. STAY EPIC AND AWESOME FRIEND.

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A car can travel 340 miles on 10 gallons of gasoline. How much gasoline will it need to go 510 miles?
CaHeK987 [17]

Answer:

The answer to your question is 15 gallons

Step-by-step explanation:

Data

distance 1 = 340 mi

volume 1 = 10 gal

distance 2 = 510 mi

volume 2 = ?

Process

To solve this problem we know that there is a direct proportion between the distance traveled and the gasoline used. The more distance traveled, the more gasoline used.

                             340 mi ---------------------- 10 gal

                              510 mi  ---------------------  x

                              x = (510 x 10)/340

                              x = 5100/340

                              x = 15 gallons

4 0
3 years ago
Read 2 more answers
Over 25.5 days a ponds water level changed by a average of -0.32 centimeter each day what was the total change in the water leve
scZoUnD [109]

If over 25.5 days a ponds water level changed by a average of -0.32 centimeter each day the total change in the water level will be:  C:8.16

Centimeter each day=-0.32

Days of changed in water level=25.5 days

Now let determine total change in the water level

Total change=25.5 days × (-0.32)

Total change=8.16 centimeter

Inconclusion if over 25.5 days a ponds water level changed by a average of -0.32 centimeter each day the total change in the water level will be:  C:8.16

Learn more here:

brainly.com/question/2028354

3 0
3 years ago
Without computing each​ sum, find which is​ greater, O or​ E, and by how much
Tresset [83]
E is greater cause it starts of adding at 4 and ends of adding at 102.
7 0
3 years ago
What is the inverse of -9x+2
horsena [70]

Step-by-step explanation:

so,

y = -9x + 2

now we need to transform this equation that actually x is calculated out of y.

and then, at the end, to make the inverse function a formally correct function, we rename x to y and y to x.

so,

y = -9x + 2

y - 2 = -9x

x = -(y - 2)/9 = (-y + 2)/9

=> for a formal function definition

y = (-x + 2)/9

7 0
3 years ago
Someone please help me answer this!1
Arada [10]

Answer:

16 km is the answer

Step-by-step explanation:

a (Colton to parents' house) = 12 km

b = ?

c (parents' house to grandparents' house) = 20 km

According to the Pythagoras theorem,

a² + b² = c²

12² + b² = 20²

144 + b² = 400

b² = 400 - 144

b² = 256

b = 16

∴ Colton is 16 km away from his grandparents' house.

6 0
3 years ago
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