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bixtya [17]
3 years ago
5

How do You do solving system of equations by solving for a variable

Mathematics
1 answer:
In-s [12.5K]3 years ago
6 0
Well, you have to do it with the substitution method now it's not easy, it takes some time to get used to it. I'm not really sure how to explain it but if you go on Khan Academy it will show you how to do it.
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Please help !! I would really appreciate it. brainliest will be given for best answer
faltersainse [42]

Since A is (-7,-4) and C is (7,3) for the x value from a to c is 14 for the y value from a to c is 7

Do 14 x 2/7 which is 4

Do 7 x 2/7 which is 2

then add (-7+4,-4+2) which is (-3,-2)

7 0
4 years ago
Help please lol anyoneeee
coldgirl [10]
I think it is 3/4 correct me if I’m wrong
5 0
3 years ago
Reggie has a rectangular piece of paper that is 12 inches long and 7 inches wide. He is going to cut the paper from corner to co
neonofarm [45]

A property from geometry states that rectangles have congruent opposite sides. Thus, no matter which diagonal Reggie cuts, it still has the same lengths. Since it's a rectangle and we cut from corner to corner, we create a right triangle. See the picture below:

<u>___________12 inches_______</u>

7 |

i |

n |

Because it's a rectangle, it won't matter which corner we cut. But if we fold at the cut lines, we would make an in the rectangle's center.

The cut line and two sides make a right triangle. One leg is 12, one leg is 7, and we need to find the third side. The Pythagorean Theorem - sum of the squares of the legs equals the square of the hypotenuse - is applied.

Let S = the length of the side from corner to corner

S² = 12² + 7²

S² = 144 + 49

S² = 193

S = √193 or -√193

Because we are dealing with lengths, we only want positive numbers. -√193 is not used. Thus S = √193

S = √193 = 13.8924439894

S = 18.92 (rounded to two places)


Thus, Reggie will cut 18.92 inches of paper.

5 0
3 years ago
I need help with my math assignment
mel-nik [20]

Answer:

63

Step-by-step explanation:

×+15+102=180

×=180-102-15

×=64

3 0
3 years ago
2. cost to store: $25<br> markup: %<br> selling price: $45
omeli [17]

Answer:

95

Step-by-step explanation:

you take the 25x2 and add the sellong price. Bada bing bada boom you get $95

3 0
3 years ago
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