How do you solve substitution to the equation y=-2x +1 4x+y=9

Answers

Answer 1

Answer:

Step-by-step explanation:   2x+y=1

                                               4x+y=9        

we substract equals. 2x=8 so x=4 , y=-7


Related Questions

R is the midpoint of segment PS. Q is the midpoint of segment RS. P is located at (8,10), and S is located at (12,-6). What are the coordinates of Q

Answers

Answer:

(10,2)

Step-by-step explanation:

To find the midpoint you have to:

Add both "x" coordinates then divide by 2.     12+8=20    20/2=10

Add both "y" coordinates then divide by 2.     10+(-6)=4   4/2=2

Two different box-filling machines are used to fill cereal boxes on an assembly line. The critical measurement influenced by these machines is the weight of the product in the boxes. Engineers are quite certain that the variance of the weight of product is 1 ounce. Experiments are conducted using both machines with sample sizes of 36 each. The sample averages for machines A and B are 4.5 ounces and 4.7 ounces respectively. Engineers are surprised that the two sample averages for the filling machines are so different. a. Use the CLT to determine the distribution of �$! − �$ ". b. What is �(�$! − �$ " ≥ 0.2)?

Answers

Answer:

0.1981

Step-by-step explanation:

See attachment for calculation

Find the equation of the line khan academy slope intercept equation from the graph
PLEASE HELP!!!

Answers

y= 3/4x - 2
I hope this helps!!!

Some one plz help this is a wuick question

Answers

the answer is c

3.3 x10 restu power minus 3

can u solve this please? 18x-2 = 17x +2

Answers

Answer:

Step-by-step explanation:

18x-2 = 17x +2

⇒18x-17x - 2  = 2

⇒x - 2 = 2

∴ x = 4

Answer:

x=4

Step-by-step explanation:

18x-2=17x+2

step 1: isolate the x by subtracting 17x from both sides

18x-2-17x=17x+2-17x

x-2=2

then add 2 to both sides

x-2+2 = 2+2

x=4

multiply the complex number by this complex conjugate.
16. 8+i
17. 3 - 2i
18. -7- 5i

Answers

8xi=16 to explain your answer


4950/6 + 112 x 1.75 = ? x 2​

Answers

Answer:

1021

Step-by-step explanation:

Answer:

1021 is the answer to this question

On a lunch counter, there are 3 oranges, 5 apples, and 2 bananas. If 3 pieces of fruit are selected, find the probability that 1 orange, 1 apple, and 1 banana are selected (does not have to be in that order).

Answers

Answer:

[tex]Probability = \frac{1}{24}[/tex]

Step-by-step explanation:

Given

[tex]Oranges = 3[/tex]

[tex]Apples = 5[/tex]

[tex]Banana = 2[/tex]

[tex]Total = 10[/tex]

Required

Determine the probability of 1 orange, 1 apple and 1 banana

Since, order is not important:

[tex]Probability = P(Orange) * P(Apple) * P(Banana)[/tex]

[tex]Probability = \frac{3}{10} * \frac{5}{9} * \frac{2}{8}[/tex]

The difference in the numerator is as a result of picking the fruit without replacement

[tex]Probability = \frac{30}{720}[/tex]

[tex]Probability = \frac{1}{24}[/tex]

Probability is simply how likely something is to happen.

The probability of 1 orange, 1 apple, and 1 banana are  [tex]\frac{1}{24}[/tex]

On lunch counter,

Number of oranges = 3

Number of apples = 5

Number of bananas = 2

If 3 piece of fruit is selected then, probability of 1 orange, 1 apple and 1 banana

                          [tex]=\frac{3}{10}*\frac{5}{9} *\frac{2}{8} \\\\=\frac{30}{720}\\\\=\frac{1}{24}[/tex]

Therefore, the probability of  selecting 1 orange, 1 apple, and 1 banana are [tex]\frac{1}{24}[/tex]

Learn more:

https://brainly.com/question/15589719


Dylan mowed three lawns for $45. Determine the cost per lawn

Answers

Answer:

15 dollars per lawn

Step-by-step explanation:

45 divided by 3= 15

Answer:

He earned $45 dollars when he mowed 3 lawns.

So get 45 and divide it by 3.

That's 15.

So Dylan earned $15 per lawn.

Hope this helped!!

You have 8 donuts and you want to give 1/4 of them to a friend. How many donuts would your friend get?​

Answers

Answer: pretty sure the friend would get 2 donuts

Step-by-step explanation:

6th grade math I mark as brainliest

Answers

Answer:

4 1/6

Step-by-step explanation:

If you divide 25 (Miles) by 6 (Days) then you get:  

4.1666666666666666666666666666667‬.

But, when you make it a fraction you get 4 1/6.

Answer:

4 1/6

Step-by-step explanation:

25/6

Hope this helps! Good Luck!

Jada is putting a border around her rectangular garden. The garden is 12.63 meters long and 3.28 wide. Jada estimates the perimeter of her garden by rounding the length and width to the nearest whole number. What equation shows

Answers

Answer:

12.63 rounded to 13 and 3.28 rounded to 3 the perimeter is 32

Enter the coordinates where P' should be.

Answers

Answer:

2, -2

Step-by-step explanation:

i have already learned this

Answer:

(-2 , -2)

Step-by-step explanation:

The farmer decided that he ordered enough planks for an arena that measured 115 1/4 ft by 63 1/2 ft. Is he correct? Explain.



What questions do you need to answer this question? Please help

Answers

Answer:

The question we need to answer is what is the perimeter of the arena

Step-by-step explanation:

The question we need to answer is what total length of plank did the farmer ordered for the arena.

to solve for the length of plank to cover the arena we need to solve for the perimeter of the arena.

given data

length L= 115 1/4 ft = 115.25ft

width W= 63 1/2 = 63.5ft

perimeter= 2L+2W

perimeter= 2(115.25)+2(63.5)

perimeter= 230.5+127

perimeter= 357.5ft

This means that the farmer ordered a total length of 357.5ft of plank

A merchant surveyed 370 people to determine the way they learned about an upcoming sale. The survey showed that 170 learned about the sale from the radio 140 from television 190 from the newspaper, 90 from radio and television, 120 from radio and newspapers, 80 from television and newspaper, and 70 from all three sources. how many people learned of the sale from newspapers or radio, but not both?

Answers

240

Because 170+190= 360 .
360-120=240

Can someone help me out with this question ( pre-calculus)....................

Answers

Answer:

I got pre calculus toooo.. Man I'm struggling currently in a test

FREE BRAINLIEST AND POINTS I WILL CHECK IF THEY ARE WRONG DO THIS ASapPPP

Answers

Answer:

no

Step-by-step explanation:

Answer:

Why-?

Step-by-step explanation:

Which fraction is not equivalent to 9/12

PLEASE SOMEBODY HELP ASAP

Answers

Answer:

15/20 I am studying with international schooling so you can ask me anything anytime

Answer:

16/24 is NOT equivalent to 9/12

Step-by-step explanation:

9/12 ÷ 3 = 3/4

3/4 × 2 = 6/8

3/4 × 5 = 15/20

3/4 × 8 = 24/32

this is an simplified or not?

[tex] \frac{3}{x - 5?} [/tex]

Answers

yes it is simplified, good job!

30 POINTS HELPPPPP PLS Simplify the following. Do not Evaluate



30^7

Answers

i used a calculator and for some reason got 21870000000. i’m soooo sorry if this is incorrect but

Convert to a fraction: 0.18

Answers

Answer:

9/50 = 0.18

-----------------------------------------

Convert decimal to fraction

0.18 = 18 over 100

18/100

Simplify

18 over 100

= 9 over 50

9/50, Reduce fraction to lowest terms.

18/100 = 18 divided by 2 over 100 divided by 2 = 9 over 50

What is the absolute value of 5,234?

Answers

Answer:

Step-by-step explanation:

5.234

I need help on it pls​

Answers

Answer:

6

Step-by-step explanation:

26+32=58 and if there is 58 kids then they would need 6 vans but one van is holding 8 kids

Answer:

6 vans / in the first 5 10 kids in each and in the 6th van only 8 kids.

Step-by-step explanation:

1.) 26+32=58

2.) 58 divided by 10=5 8/10=6vans

brainliest pls B) hope i help

What value of a will make the following equation true?

Answers

Answer:

a=16

Step-by-step explanation:

Answer:

A=4

Step-by-step explanation:

simplify the square root of -15 times the square root of -20

Answers

Step-by-step explanation:

-15√-20 = -15√(-1)*4*5 = -15√(i^2)*2^2*5 = -15i*2√5

= -30i√5

I need help with this ASAP !! I’m failing !!!

Answers

Answer:

c=130,b=50

Step-by-step explanation:

[tex]c = 180 - 50 = 130[/tex]

[tex]b = 180 - 130 = 50[/tex]

i think this is the answer

Intro:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

<b and 50° are vertical angles so that means they are congruent.  So that means <b is 50.

<c and 50° are supplementary angles which means when you add them you should get 180. So if do 180 - 50 we will get 130. So that means <c is 130°.

The mean mass of the 15 players in a rugby team is 85.2kg the mean mass of the team plus a substitute is 85.4kg what is the mass of the substitute ?

Answers

Answer:

88.4 kg

Step-by-step explanation:

Since we are given the mean we will need to multiply the mean by how many players there are on the team to find the total mass. (The second mean will be multiplied by 16 because it is the number of players on the team plus the substitute)

85.2 x 15 = 1,278

85.4 x 16 = 1,366.4

Subtract the first mass from the second because this will remove the mass of the 15 other players.

1366.4 - 1278 = 88.4

88.4 kg is the mass of the substitute.

Andy is scuba diving. He starts at sea level and then descends 10 feet in 212 minutes.

Answers

Descent  = 10 feet

Time required = 2 1/2 minutes.

The rate of descent = (10 feet)/(2.5 mn) = 4 ft/min

In 6 minutes, the descent will be

(4 ft/min)*(6 min) = 24 ft

Answer:

(a) 4 feet/minute

(b) 24 feet

The sign of the product of –35 and –625 is

Answers

Answer:

positive

Step-by-step explanation:

positive

negative*negative=positive

-35*-625=21875

Use the work shown below to find the simplified product.


StartFraction 25 x squared Over 2 x + 6 EndFraction times StartFraction 2 Over 5 x EndFraction


StartFraction 25 x squared Over 2 (x + 3) EndFraction times StartFraction 2 Over 5 x EndFraction

Answers

Answer:

a. [tex]\frac{5x}{(x+3)}[/tex]

b. [tex]\frac{5x}{(x+3)}[/tex]

Step-by-step explanation:

Given that:

a. [tex](\frac{25x^{2} }{2x+6})[/tex] x [tex](\frac{2}{5x})[/tex] = [tex]\frac{50x^{2} }{5x(2x+6)}[/tex]

                        = [tex]\frac{50x^{2} }{10x^{2} +30x}[/tex]

                        = [tex]\frac{(50x)x}{(10x+30)x}[/tex]

                        = [tex]\frac{50x}{(10x+30)}[/tex]

                         = [tex]\frac{5x}{(x+3)}[/tex]

b. [tex](\frac{25x^{2} }{2(x+3)})[/tex] x [tex](\frac{2}{5x})[/tex] = [tex]\frac{50x^{2} }{10x(x+3)}[/tex]

                           = [tex]\frac{5x}{(x+3)}[/tex]

Therefore,

[tex](\frac{25x^{2} }{2x+6})[/tex] x [tex](\frac{2}{5x})[/tex] = [tex](\frac{25x^{2} }{2(x+3)})[/tex] x [tex](\frac{2}{5x})[/tex] = [tex]\frac{5x}{(x+3)}[/tex]

Answer:

option C

Step-by-step explanation:

egg 2023

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