4 years ago

Which ordered pair is a solution of the equation?

Mathematics

1 answer:

GrogVix [38]4 years ago

6 0

Answer

A only (2,3)

Step-by-step explanation:

If you graph it or plug it into Desmos that can also help

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7x-9+3x=2x+18-x submit i want an answer please

oksano4ka [1.4K]

Answer:

x = 3

Step-by-step explanation:

7x - 9 + 3x = 2x + 18 - x

10x - 9 = x + 18

10x - x = 18 + 9

9x = 27

x = 3

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3 years ago

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How do you know if a value is a solution to<br> an equation?

Alex787 [66]

Answer:

You know that a value is a soloution to a problem when you add the value into the problem to check if it solves the problem. :)

Step-by-step explanation:

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3 years ago

the owner of an aquatic store used 17 1/2 gallons of water to fill aquariums. he puts 5 5/6 gallons of water in each aquarium. h

Lina20 [59]

He fills 3 tanks. Hope this helps!

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4 years ago

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How to do 4 x 4 x 4 using an exponent

luda_lava [24]

Answer:

4^3

Step-by-step explanation:

4×4×4

Multiply 4 and 4 to get 16.

16×4

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3 years ago

Solve for x in the equation 2 x squared + 3 x minus 7 = x squared + 5 x + 39.

Nastasia [14]

Answer:

$\implies x=1\pm \sqrt{47}$

Step-by-step explanation:

We want to solve for x in $2x^2+3x-7=x^2+5x+39$

You need to group and combine like terms and write in standard form:

$2x^2-x^2+3x-5x-7-39=0$

$\imples x^2-2x-46=0$

By comparing to $ax^2+bx+c=0$ , we a=1,b=-2 and c=-46

The solution can be obtained using the quadratic formula.

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

We substitute the coefficients to get:

$x=\frac{--2\pm \sqrt{(-2)^2-4*1*-46} }{2*1}$

$x=\frac{2\pm \sqrt{4+4*46} }{2}$

$x=\frac{2\pm \sqrt{4*47} }{2}$

$x=\frac{2\pm2\sqrt{47} }{2}$

$\implies x=1\pm \sqrt{47}$

The last choice is correct

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3 years ago

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