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3 years ago

Find the midpoint of (5,9) and (-1,9)

Mathematics

1 answer:

777dan777 [17]3 years ago

6 0

Answer:

The answer to your question is (2, 9)

Step-by-step explanation:

Data

A (5, 9)

B (-1, 9)

Formula

Xm = $\frac{1 + x2}{2}$

Ym = $\frac{y1 + y2}{2}$

Substitution

Xm = $\frac{5 - 1}{2}$

Xm = $\frac{4}{2} = 2$

Ym = $\frac{9 + 9}{2} = \frac{18}{2} = 9$

Midpoint = (2, 9)

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3 years ago

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cedric and Gabe eat 9 pieces cake together, cedric eats 3 pieces and Gabe eats another fourth of the whole cake. How many pieces

salantis [7]

Let's assume

total number of pieces in a cake is x

Gabe eats another fourth of the whole cake

so,

Gabe eats

$=\frac{1}{4} x$

cedric eats 3 pieces

so,

Cedric and Gade together eat

$=\frac{1}{4} x+3$

we are given

Cedric and Gabe eat 9 pieces cake together

so, we can set them equal

and we get

$\frac{1}{4} x+3 =9$

now, we can solve for x

Subtract both sides 3

$\frac{1}{4} x+3-3 =9-3$

$\frac{1}{4} x =6$

Multiply both sides by 4

$\frac{1}{4} x*4 =6*4$

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3 years ago

5x-2y = -25 Solve by linear combination please show work

Luden [163]

Answer:

The answer you get is x=-3, and y=5 or (-3,5)

Step-by-step explanation:

3x+y=-4 and 5x-2y = -25.

Firstly, to solve the equation let's use the multiplication method.

5x-2y=-25 (Multiply by 1)

3x+y=-4 (Multiply by 2)

5x-2y=-25

+6x+2y=-8

11x=-33

x=-3

We know that x=-3, now we can find y by substituting this value into other equations.

5(-3)-2y=-25

-15-2y=-25

+15 +15

-2y=-10

y=5

The answer you get is x=-3, and y=5 or (-3,5)

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4 years ago

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