3 years ago

Please help please please

Mathematics

1 answer:

monitta3 years ago

5 0

Answer:

x=10

y=-2

(10,-2)

Step-by-step explanation:

If X=10, we can put 10 in for x in the equation.

30 + 5y = 20

Next, we need to solve to find y.

We will get y on its own so we subtract 30 from 20 to get

5y=-10

We then know that 5 goes into -10 -2 times.

y=-2

You might be interested in

Which represents the solution(s) of the graphed system of equations, y = x2 + 2x – 3 and y = x – 1?

Sonja [21]

Answer:

Second option: (-2,-3) and (1,0)

Step-by-step explanation:

Given the system of equations $\left \{ {{y = x^2 + 2x-3} \atop {y = x - 1}} \right.$ , you can rewrite them in this form:

$x^2 + 2x-3= x - 1$

Simplify:

$x^2 + 2x-3-x+1=0\\\\x^2+x-2=0$

Factor the quadratic equation. Choose two number whose sum be 1 and whose product be -2. These are: 2 and -1, then:

$(x+2)(x-1)=0\\\\x_1=-2\\\\x_2=1$

Substitute each value of "x" into any of the original equation to find the values of "y":

$y_1= (-2) - 1=-3\\\\y_2=(1)-1=0$

Then, the solutions are:

(-2,-3) and (1,0)

7 0

3 years ago

Read 2 more answers

Megan and Lily each pay $750 a month for the apartment they share. Kevin lives by himself and pays 1.8 times as much rent a mont

marysya [2.9K]

Answer:

Im not good at math

Step-by-step explanation:

8 0

2 years ago

What is the slope (5,7) and (2,-2)

Romashka [77]

Answer:

slope = 3

Step-by-step explanation:

to find the slope you do (y2-y1)/(x2-x1)=m

so we can plug the points into this formula

(5,7) (2,-2)

x1 y1 x2 y2

-2-7/2-5=m

-9/-3=m

Simplifies to

3=m

4 0

2 years ago

Factor the equation.

Kryger [21]

Hi!

The fully factored form of this equation is (3x+2)²

5 0

3 years ago

Frances gets 6 paychecks in 12 weeks how many paychecks does she get in 52 weeks

Norma-Jean [14]

Frances will receive 26 paychecks

6 0

3 years ago

Read 2 more answers