3 years ago

2x+2y=4y+x , x+y+2x+2y=180

Mathematics

1 answer:

KIM [24]3 years ago

6 0

Answer:

x=40

y=20

Step-by-step explanation:

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Solve 3x - 9x + 7 - 3 = -8. 6 -6 2 -2

ZanzabumX [31]

Answer:

x=2

Step-by-step explanation:

3x - 9x + 7 - 3 = -8

Combine like terms

-6x +4 = -8

Subtract 4 from each side

-6x +4-4 = -8-4

-6x = -12

Divide each side by -6

-6x/-6 = -12/-6

x = 2

3 0

3 years ago

I need help with this.

Bad White [126]

5 = manta rays
2 = turtles
2 = 56
1 = 28
5 = 140
There are 140 manta rays.

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3 years ago

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Solve for x in the equation x squared + 14 x + 17 = negative 96. x = negative 7 plus-or-minus 4 StartRoot 6 EndRoot i x = –7 ± 8

blagie [28]

Answer:

$x=-7\pm8i$

Step-by-step explanation:

we have

$x^{2} +14x+17=-96$

Equate to zero

$x^{2} +14x+17+96=0$

$x^{2} +14x+113=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2} +14x+113=0$

$a=1\\b=14\\c=113$

substitute in the formula

$x=\frac{-14\pm\sqrt{14^{2}-4(1)(113)}} {2(1)}$

$x=\frac{-14\pm\sqrt{-256}} {2}$

Remember that

$i=\sqrt{-1}$

$x=\frac{-14\pm16i} {2}$

$x=-7\pm8i$

7 0

3 years ago

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The sun's mass is about 30 million times greater than the moon. Why does the gravitational pull between earth and the moon affec

lakkis [162]

Even though the mass of the sun is much greater than the mass of the moon, the moon has a greater influence on the tides than the sun. This is because the sun is much farther away from the earth, so its tidal force is only about half that of the moon.

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4 years ago

Bonita is painting walls. Each wall is the same area and requires 2/5 gallon of paint.

shutvik [7]

You do 2/5 divided by 3/4

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3 years ago