x + 15y = 40 / x + 10y = 30 solve for x and y

Answers

Answer 1

Use elimination to find both values.
Subtract the second equation from the first equation
x + 15y = 40
- x + 10y = 30
————————
5y = 10
y = 2

Plug in the value for y into one of the equations. I’m going to put it in the second equation.
x + 10(2) = 30
x + 20 = 30
x = 10

x = 10
y = 2

Related Questions

Work out the percentage change to 2 decimal places when a price of £97 is decreased to £90.

Answers

Answer:

I NEED THIS ANSWER!

Step-by-step explanation:

Please answer FAST i need your help and when you put your answers put them like
1.
2.
3.
4.
5.

Answers

Step-by-step explanation:

3.5

-7.14

1/5

6.5

sorry if this and are wrong

1. 3.5
2.=-1/8
3.-30.66
4.=1/3

Write an equation of a line given the point (2,6) and a slope of 4,

Answers

Answer:

y=4x-2

Step-by-step explanation:

y=mx+b

plug in known variables

6=(4)(2)+b

simplify

b=-2

plug in m and b

y=4x-2

Which equation represents the relationship “4 less than a number is 10?”

Answers

X+3=7
Which 7-3 would be 4

Answer:

x - 4 = 10

x = 14

Step-by-step explanation:

Any variable can be used to represent the number, I choose to use "x" in this case.

x - 4 = 10

Inverse operations;

x - 4 = 10

+4 +4

x = 14

five plus negative three

Answers

Answer:

5-3=2

Step-by-step explanation:

Answer:

Step-by-step explanation:

Can someone do this? You invest $6000 today. What interest rate is needed to have $8000 in 4 years if
money is compounded weekly?

Answers

Answer:

R = 7.197% per year

Step-by-step explanation:

r = n[(A/P)1/nt - 1]

simplify each of the following (5x+4y)(5x-4y) solve

Answers

Simplified :(5x+4y)(5x−4y)

=(5x+4y)(5x+−4y)

=(5x)(5x)+(5x)(−4y)+(4y)(5x)+(4y)(−4y)

=25x2−20xy+20xy−16y2

=25x2−16y2

hope this helps!

Answer:

25x^2-16y^2

Combine the opposite terms in 5x(5x)+5x(4y)-4y(4y)

5x(5x)-4y(4y)

25x^2-16y^2

5+5= what pllease help!!!!!!!!!!!! 10 points!

Answers

Your answer would be 10 please give me brainliest

26/1
My teacher said it can be simplified and I did which gave me 26 but that not what he wants help me? I’m lost

Answers

Answer:

Maybe just 26 cause when you do 26/1 as a fraction that’s indicating it’s a whole number so just try 26, I’m not completely sure though. Sorry wish I could help more

Step-by-step explanation:

On a boat, a cabin's window is in the shape of an isosceles trapezoid, as shown below. What is the area of the window?

Answers

Answer: Isosceles Trapezoid area: 156 +13 +13= 182 inches

Square area: 12 x 13 = 156

Triangle Side x2: 13 x 2 = 26/2 = 13

Step-by-step explanation:

Dissolution of 2Y +9 equals four is

Answers

Answer:

Step-by-step explanation:

Choose all of the transformations that are rigid

Answers

Answer:

its angel

Step-by-step explanation:

Answer: its angel

Step-by-step explanation:

This diagram represents a function named h. Which of the choices also represents the function, h?

Answers

Answer:

if this is on Imagine Math then its the first answer

Step-by-step explanation: got it right!

The correct choices to represents the function, h is shown in figure.

⇒ h (x) = 4x - 2

What is Equation of line?

The equation of line in point-slope form passing through the points

(x₁ , y₁) and (x₂, y₂) with slope m is defined as;

⇒ y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

Given that;

This diagram represents a function named h.

Now, We have;

The correct equation to represent the equation is,

h (x) = x × 4 + 9- 2)

h (x) = 4x - 2

Hence, We can draw the equation of line and find that the correct choices to represents the function, h

Learn more about the equation of line visit:

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Write an equation in point slope form of the line passes through the point (9,0) and has a slope of m=-3

Answers

Answer:

[tex] \huge y = - 3(x - 9)[/tex]

Step-by-step explanation:

To find an equation of a line in point slope form when given the slope and a point we use the formula

[tex]y - y_1 = m(x - x_1)[/tex]

From the question we have the final answer as

[tex]y - 0 = - 3(x - 9) \\ \\ \\ y = - 3(x - 9)[/tex]

Hope this helps you

Susan owes $15,000 in student loans. She pays $150 toward the debt every month. Represent the total amount that she owes as a function of months (x) after each payment?

Answers

Answer:

f(x) = 15000 - 150x

Step-by-step explanation:

Given that:

Initial Amount owed = $15000

Amount payed towards debt per month = $150

Total amount owed as a function of month(x) after each payment :

F(x) = Initial amount owed - (amount paid per month * number of month)

Let number of month = x

f(x) = 15000 - 150x

Hence, the function ;

f(x) = 15000 - 150x represents the total amount owed after each payment.

What is the area of the base of the cone below? Round the number to the nearest tenth if necessary.

A. 14.7 in (2)

B. 17.3 in (2)

C. 18.5 in (2)

D.19.5 in(2)

Answers

Answer:

19.5

Step-by-step explanation:

Which expression is equivalent to (2x^2+3x-4)-(x^2-2x+4)

Answers

Answer:

3x + 2 = 14

Step-by-step explanation:

PLEASE HELP 20 POINTS RIGHT HERE!!!!!!!

Answers

Answer:

Step-by-step explanation:

Everything else can be simplified to 2/5, except for 9/20

Answer:

9/20 is not equivalent to the others

Step-by-step explanation:

9 is not divisible by 2

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Answers

Answer:

6x6x6x6 is equivalent to 1,296

Find the value of x.

Answers

Answer:

x=95°

Step-by-step explanation:

7 * (-3) =
What Is the answer
This is multiplication

Answers

Answer:

-21

Step-by-step explanation:

Answer:

-21

Step-by-step explanation:

7 * 3 = 21 normally, right?

this equation is the same thing, you just have to make it negative!

for the future, remember that positive * negative = negative answer and negative * negative = positive answer. if you remember that, all you have to do is solve the equation normally and then add a negative sign!

What expression is equivalent to 4(x-7)+8

Answers

Answer:

Step-by-step explanation:

4(x-7)+8=4x-4*7+8=4x-28+8

Answer:

4x-28+8

Step-by-step explanation:

ANSWER SHOULD REALLY BE 4x-20 but thats not an option

Identify the slope-intercept form and the graph of the line described by the equation 2x−y=7.

Answers

answer :
2x - y = 7
-y = -2x + 7
y = 2x - 7 <— slope-intercept form

what is 1 1/3 x 2/3 in the simplest form?

Answers

Answer:8/9

Step-by-step explanation:4/3 * 2/3=8/9

The simplification of the fraction 1 1/3 x 2/3 in the simplest form will be; 8/9

What is the fundamental principle of multiplication?

If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.

We have been given the mixed fraction as;

[tex]1 \dfrac{1}{3} \times \dfrac{2}{3}[/tex]

First, we need to simplify the mixed fraction;

[tex]1 \dfrac{1}{3} =\dfrac{4}{3}[/tex]

Therefore, the product of the fraction will be;

4/3 x 2/3 = 8/9

Hence, the simplification of the fraction 1 1/3 x 2/3 in the simplest form will be; 8/9

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Please help meee I really need help I’ve been struggling badly..

Answers

Answer:

make it so that its flat or turn it left

Step-by-step explanation:

find the nth term of this quadratic sequence

2,8,18,32,50

Answers

The first term, n = 1 = 2*1*1 = 2

Second term, n =2, = 2*2*2 = 8

Third, n =3, = 2*3*3 = 18

Third term, n = 4, = 2*4*4 = 32

Fourth term, n =5, 2 * 5* 5 = 50

For nth term, 2 *n *n = 2n²

Therefore nth term = 2n²

I hope this helps.

Find two consecutive even numbers whose sum is 126

Answers

Answer:64

Step-by-step explanation:

Solve this system of linear equations. Separate
the x- and y-values with a comma.
6x - 4y = -44
2x + 3y = -6
Enter the correct answer.

Answers

Answer:

( − 6 , 2 )

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation. (the points of intersection).

KING VON JUST DIED NOT TO LONG AGO!!!!! SAD !!!!!1

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Answer:

Jimmy Choo, with a handbag too, red or baby blue?

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Step-by-step explanation:

Answer:

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Step-by-step explanation:

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sir im sry to tell u this but, Y ARENT U SUBBED TO PEWDIEPIE U NERD

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