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Crazy boy [7]
3 years ago
14

-x+y=15−x+y=15 and -5x-3y=27−5x−3y=27 Solve the system of equations by combining the equations

Mathematics
1 answer:
Arisa [49]3 years ago
8 0

Answer:

x = -9, y = 6.

Step-by-step explanation:

-x + y = 15

-5x - 3y = 27

From the first equation:

y = x + 15.

Substituting for y in second equation:

-5x - 3(x + 15) = 27

-8x - 45 = 27

-8x = 72

x = -9.

Now plug x = -9 into equation 1

-(-9) + y = 15

y = 15 -9 = 6.

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Answer:

-203 is the answers for the question

Step-by-step explanation:

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7 0
3 years ago
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Select the inequality that corresponds to the figure
Gnoma [55]

Answer:

Although the Line is included in the region, I will say the your answer is B and D

Step-by-step explanation:

The region shaded is below the Line graph, son we have a < sign, now, I can see the region including the Line graph, so I will say that the inequality should have the = sign, nevertheless no options include the =sign, so, if it is nothing missing, your answer should be:

y<x

3 0
3 years ago
The container hold 1/2 gallon of water. It is 3/4 full. How many gallons of water are in the container?
Olegator [25]

Based on the capacity of the container and the capacity currently being used, the amount of water in the container is <u>3/8 gallons. </u>

The container is capable of holding 1/2 gallons of water.

If it is holding 3/4 of that 1/2 gallons, the amount of water it would be holding is:

<em>= Capacity of container x Percentage full </em>

= 1/2 x 3/4

= 3/8 gallons of water

In conclusion, the container is currently holding 3/8 gallons of water.

<em>Find out more about this at brainly.com/question/11459708. </em>

6 0
2 years ago
Match each shape on the left with its area formula on the right.
e-lub [12.9K]

Step-by-step explanation:

A=1/2(B1+B2)h is a trapezoid

A=1/2bh is a triangle

A=bh is a parallelogram

And A=Pir2 is a circle

5 0
3 years ago
The ratio of the number of cups of blue paint to the number of cups of red paint that Lara mixed to make a shade of purple paint
Vikki [24]

Answer:

a

Generally given that the number of cups of blue to that of red paint is 3: 1 then the Lara mixed 3 cups of blue paint with 1 cup of red paint

b

The number is  x=  \frac{1}{3}

c

The price is P  = \$ 8

Step-by-step explanation:

From the question we are told that

   The ratio of  the number of cups of blue paint to the number of cups of red paint is  r  =  3: 1

Generally given that the number of cups of blue to that of red paint is 3: 1 then the Lara mixed 3 cups of blue paint with 1 cup of red paint

Given that  1 cup of  red paint  =>   3 cups of blue paint

                 x cup of  red paint  =>  1  cup of  blue paint

So

         x=  \frac{1 *  1}{3}

=>      x=  \frac{1}{3}

Generally the unit price of a cup of blue paint is mathematically represented as

     P  =  \frac{48}{6}

=>  P  = \$ 8

     

4 0
3 years ago
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