All categories

3 years ago

Given that 2x – 2y = 23

Mathematics

2 answers:

lidiya [134]3 years ago

8 0

Answer:

x = 41/2

Step-by-step explanation:

I am assuming that we are finding 'x' when y = 9.

$2x-2y=23\\\\2x-2(9)=23\\\\2x-18=23\\\\2x-18+18=23+18\\\\2x=41\\\\\frac{2x=41}{2}\\\\\boxed{x=\frac{41}{2}}$

Hope this helps!

klemol [59]3 years ago

8 0

Answer:

2x-2y=23

2x-18=23

2x=23+18

2x=41

2x/2=41/2

x=20.5

You might be interested in

The calculated average of a data set best describes which of the following? (4 points) Group of answer choices Mean Median Mode

OleMash [197]

Answer:

Its A: Mean

Step-by-step explanation:

Mean means average in a set of data

8 0

3 years ago

I will give you a Brainly crown if it is right. Will you help me

Lostsunrise [7]

Answer:

-12

Step-by-step explanation:

4 time 3 is 12

since he owes her its negative, so it is -12

3 0

3 years ago

Read 2 more answers

Determine if each function is linear or nonlinear.

kogti [31]

Y=2x^3 is nonlinear, since it's a cube equation. y=x+5 is linear, because it's a line with y intercept (0,-5) and slope 1. y=\sqrt(x-5) is nonlinear, because it's a quadratic equation when reversing x and y. 5x+5y=25 is equal to x+y=5 ot y=-x+5, which is also linear. y=x^2/2 is a quadratic equation, so it's nonlinear.

6 0

3 years ago

Please answer them! be quick if you can, thank you.

fiasKO [112]

Answer:

Question one = 35a - 15

Question two = 9

Step-by-step explanation:

Distributive property means to multiply all the numbers inside the parenthesis

by the outside number. 5 x 7a equals 35a and 5 x 3 = 15.

35 x 9 - 315 - 15 = 300

A = 9

5 0

3 years ago

3x^2 + 4x = -8<br> solve using quadratic formula

Firdavs [7]

Use the quadratic equation to solve this (image of the quadratic equation is below)

Remember that quadratic functions are set up like so:

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

To make the equation 3x² + 4x = -8 into a quadratic function you must bring -8 to the left side of the equation so it equals zero. To do this add 8 to both sides

3x² + 4x + 8= -8 + 8

3x² + 4x + 8 = 0

That means that in this equation...

a = 3

b = 4

c = 8

^^^Plug these numbers into the quadratic equation and solve (Keep in mind that +/- is ± )

$\frac{-4+/-\sqrt{(4)^{2}-4(3)(8)}}{2(3)}$