Substitution method of y=x+5 and 5x+y=3

Answers

Answer 1

Answer: To solve by substitution, you need to fill in the value for either x or y. Since y = x + 5, you already have the y value. It's x + 5. Now you need to find x before you can go any further. So let's take 5x + y = 3 and fill x + 5 in for y. 5x + y = 5 5x + x + 5 = 3 Now solve for x. 5x + x + 5 = 3 6x + 5 = 3 6x = 3 - 5 6x = -2 x = -2/6 or -0.33 Now solve x + 5 for y. y = x + 5 y = -0.33 + 5 y = 4.67 So x = -0.33 and y = 4.67

Answer 2

Answer: Solve for the first variable in one of the equations,then substitute the result into the other equation.
(-1/3,14/3)

Related Questions

Do you have to regroup to find 523 - 141?
Number 11 the answer is B how do you get it because I got it wrong with work show me
there are 325 students each class is limited to at most 30 students. how many classes need to be offered?
An airplane flies 440 miles per hour. How fast is it flying in feet per second?
This question needs to be answered fast! Please help!

A middle school basketball game is 40 minutes. In the last home game, Toby played for 65% of the 40 minutes. How many minutes of the game did he play?

Answers

Do 65/100. Gives you 0.65 right.
So then do 0.65*40 = 26
Answer is 26 minutes.

The answer is 26 minutes.

40*0.65= 26

Hope this helps

the ratio of oil to vinger in a certain salad dressing is 8:5 how much oil must be blended with 7liters of vinegar for that recipe

Answers

I think the answer is that 11.2 litres of oil is requires for 7litres of vinegar

To get the answer we can use propotion
8 oil ---------------5 vinegar
x oil----------------7 vinegar
Crossmultiply now
5x=8*7
5x=56 :5
x=11.2 - its the answer

An airplane flies a distance of 650km at an average speed of 300 km/h. How much time did the flight take?

Answers

To solve this, you can set up a proportion and cross multiply.

$(650)/(x)= (300)/(1) \n \n 650*1=300*x \n \n 650=300x \n \n 2.17=x$

2.17 hours

Distance x speed = time
300 x 650
=195000
Checking
Distance divide time = speed
195000 divide 600
=300

What is the slope between the points (3, 5) and (-2, -4)?A) 9/5
B) 1
C) 5/9
D) -5/9

Answers

The slope is 9/5
The formula is y-y1/x-x1

Using the slope formula I have found that the slope is m= 9/5 which is option A.

Is 4005 divisible by 2

Answers

4005 is not dividable by 2

Jessie is building a doghouse. For one side of the roof, she needs a board that is 7 3/4 feet long. She has a board that measure 9 1/12 feet. How much of the length does she need to cut from the board? Show your work and simply the fraction.

Answers

9 1/12 ft = 109/12
7 3/4 = 31/4
You need to give them the same denominator, so you'll need to multiply the top and bottom of 31/4 by three
109/12 - ((31*3)/(4*3))=x
109/12 - 93/12 = x
(109-93)/12 = x
16/12 = x
(16/4)/(12/4) = x
4/3 = x
4/3 = 1 1/3
Jessie needs to cut 1 1/3 feet off the board.

Other Questions

What times what equals 63

How many ounces go into 21 grams?

Please help, the questions are now attached

Which want is right in number 4 and 5