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Allushta [10]
2 years ago
8

Multiply the first equation by 2 and add the new equation to the second equation. ​

Mathematics
1 answer:
VMariaS [17]2 years ago
3 0

Answer:

-11x + 7y = 20

Step-by-step explanation:

See image. Multiply

2(-2x + 2y = 16)

You get -4x + 4y = 32

Then line that guy up underneath the

-15x + 3y = -12. You're adding vertically from the top down, x's with x's and y's with y's and plain numbers with plain numbers. See image

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Math! Answers to 11 and 12?
Gemiola [76]

Answer: 11 a 12 c  Step-by-step explanation:

5 0
3 years ago
If 3.x - 7 = 5, then 2x – 1=?
Katyanochek1 [597]

Answer: -2

Step-by-step explanation:

7 0
3 years ago
A town park has two biking trails. Marsh Trail is 5 3/10 miles long. Woodland trail is 2 4/5 Miles long. How much longer is Mari
torisob [31]

Answer:

21/2

Step-by-step explanation:

The answer can be determined by substracting the lengrh of the woodland trail from the Marsh trail

5\frac{3}{10} - 2\frac{4}{5}

3\frac{3 - 8}{10}

2\frac{5}{10}

converting the fraction to its simplest form gives 21/2

5 0
3 years ago
Write −1/2x+y=10 in slope-intercept form.
Varvara68 [4.7K]

Answer:

y=\frac{1}{2} x+10

Step-by-step explanation:

-\frac{1}{2} x+y=10\\

<em>Add </em>\frac{1}{2} x<em> to both sides</em>

y=10+\frac{1}{2} x\\\\y=\frac{1}{2} x+10

6 0
4 years ago
How do you find the area of a triangle
Anna007 [38]
Salutations!

How do you find the area of a triangle

To find the area of a triangle, you need to know the formula of the triangle to work it out. The following is the formula of the triangle:

hb/2 

H - height

B- Base

You need to multiply the base and height and divide it by 2.

Lets solve a question!

Find the area of a triangle with a base of 32mm and a height32 * 35 of 35mm

Area = hb/2

         = 32* 35

          = 1120

          = 1120/2

           = 56cm^2

Hope I helped (:

Have a great day!
3 0
3 years ago
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