Solve the system of linear equations by substitution. y=2x-3 y=-x+9

Answers

Answer 1

Answer:

x=4, y=5. (4, 5).

Step-by-step explanation:

y=2x-3

y=-x+9

----------

2x-3=-x+9

2x-(-x)-3=9

2x+x=9+3

3x=12

x=12/3

x=4

y=2(4)-3=8-3=5


Related Questions

Which of the following points could be tied to the coordinate graphiasathind point to
create an isoscelestrande Choose all that apply
5
-5
(2 points)
(1,3)
(-2,5
0 (4,-2)

Answers

(-2,5 that is the right answer

In a bag of skittles, there are 124 pieces. 25% are red. How many skittles are NOT red? Put the numeric answer only.

Answers

Answer:

496

Step-by-step explanation:

Answer:

93

Step-by-step explanation:

124 * 25%

31

124-31

93

Does anyone know how he got from step 1 to step 2??????????

Answers

9514 1404 393

Explanation:

Both sides of the equation are squared.

  [tex]\dfrac{x-12}{4}=\sqrt{x} \qquad\text{given}\\\\ \left(\dfrac{x-12}{4}\right)^2=x \qquad\text{square both sides}\\\\ \left(\dfrac{x}{4}-3\right)^2=x \qquad\text{divide out the fraction}\\\\ \dfrac{x^2}{4^2}-\dfrac{6}{4}x+9=x \qquad\text{$(a-b)^2=a^2-2ab+b^2$}\\\\\dfrac{x^2}{16}-\dfrac{5x}{2}+9=0 \qquad\text{subtract $x$}[/tex]

I like this better without fractions, so would multiply by 16 at this point (or earlier).

  x^2 -40x +144 = 0

  (x -36)(x -4) = 0

  x = 4 or 36 . . . . . . x = 4 is extraneous

The solution is x = 36.

Fred paid $75 for a pack of 15 toy mice.


How much did each mouse cost?

Answers

75 divided by 15 equals 5 so each mouse cost $5.

Answer: 5 dollars

Step-by-step explanation:

75/15 = 5

Please help! Will give brainliest. What two numbers are being multiplied above and what is their product?
40
800
500 30
(there is a picture.) Please help!!!

Answers

1st one on top is 100 and 3rd one on top is 6.

Find a cubic function with the given zeros.
3, -4, 7 (5 points)

f(x) = x3 - 6x2 - 19x + 84
f(x) = x3 - 6x2 - 19x - 84
f(x) = x3 + 6x2 - 19x + 84
f(x) = x3 - 6x2 + 19x + 84

Answers

Step-by-step explanation: its a+b which equals 182

Arrange the expressions in increasing order of their estimated

Answers

Have a blessed day xxxo‍♀️‍‍

what's 10/75 simplified?

Answers

They are both divisible by 5 so

10/5 = 2
75/5 = 15

Therefore 10/75 simplified is 2/15

Answer:

The answer to your question is 2/15.

Step-by-step explanation:

Just divide it by 5

Which graph represents the inequality x > 23 ?

Answers

Answer:

jazz

Step-by-step explanation:

yes

how to prove triangles are congruent

Answers

Answer:

Step-by-step explanation:

If two angles and the non-included side of one triangle are equal to the corresponding angles and side of another triangle, the triangles are congruent.

Answer:

by four method

Step-by-step explanation:

1st by AAA

2nd by AA

3rd by SSS

4th by SAS

I really do not get this at all and need help please

Answers

i would say C hope you get it correct
I would say C. Hopefully you get it correct.

help me I'm stuck on this assignment problem ​

Answers

Answer:

pi^4

Step-by-step explanation:

In a problem like this you subtract exponents

11 - 7 = 4

pi^4

Find m
measure of angle YQR=? Degrees

Answers

Answer:

21°

Step-by-step explanation:

Since these are both equivalent right triangles, ∡RQY and ∡PQY are the same. So set them equal to each other.

16x-27=5x+6

x=3

Next plug x into ∡RQY

16(3)-27=21°

Answer:

Step-by-step explanation:

3

Evaluate: 8×6+(12-4)÷2​

Answers

Answer:

52

Step-by-step explanation:

I want to explain why so, first subtract 4 from 12 then youll get 8 the divide it by 2 and get 4 so then evaluate 8 x 6 which is 48 then add it to 4 to get the answer of 52

Answer:

The correct answer is 52

Step-by-step explanation:

HAVE A GOOD DAY!

A fisherman weighs an ahi tuna (a very large fish) on a scale and gets a reading of 135
pounds. The reading on the scale may have an error of up to 5%. What are two possible
values for the actual weight of the fish?

Answers

Answer:

Either  128.25-reduced by 5 percent or

141.75 increased by 5 percent

Step-by-step explanation:

i think it’s 141.75 increased by 5 percent

7x + 3y = -9
Slope intercept form

Answers

y = 7/3x - 3 should be correct

Javier is buying fencing to surround his garden. If his garden has a perimeter of 30 yards, and fencing costs $6.00 a yard, how much money will he need for the fencing?

Answers

$180

Step-by-step explanation:

30 x 6 = 180

Answer:

180 it is basic multiplication

Step-by-step explanation:

escribe el número que corresponda a la escritura polinomica 8x10³+4x10²+0x10¹+9x10⁰​

Answers

Answer:

8409 es 8×10³ es 8 4×10² es 4 0×10¹ es 4 9×10⁰ es 9

Evaluate the expression when m is 5 and n is 22 10+(9m)+4-n

PLZ HELP HURRY PLZZZ​

Answers

Answer:37

Step-by-step explanation:

10+(9*5)+4-22

Expand to write an equivalent expression
-1/4 (-8x +12y)

Answers

ANSWER
-2x + -3

EXPLANATION YOU MULTIPLE THE NUMBERS BY 1/4 each

Question 8
Find the surface area of a cuboid with lengths 28 cm,
4 cm and 5 cm. If the answer is A cm2 then
write the value of A.


PLEASE HELP ME OMG X

Answers

Answer:

Answer: 544

Step-by-step explanation:

The Surface Area of a Cuboid

Given a cuboid (rectangular prism) of dimensions x,y, and z, the surface area is calculated as follows:

[tex]S=2(xy+yz+xz)[/tex]

The dimensions of a given cuboid are x=28 cm, y=4 cm, z=5 cm, thus:

[tex]S=2(28*4 + 4*5+ 28*5)[/tex]

[tex]S= 2*272 = 544[/tex]

The surface area is [tex]544 cm^2[/tex]

Answer: 544

Please help me out fast. And make sure to Write and solve an inequality. Or it isn't right.

Answers

Answer:75x+160

8 is the answer exactly 8

Step-by-step explanation:

Answer:

Set variable d for number of days: 75d + 160 < 760; 75d < 600; d < 8. The van has to be rented for less than 8 days for the family to spend less than $760.

Jenna lives 8 2/5 miles from work. Colby lives 3/4 of this distance from work. How far does Colby live from work?

Answers

Answer:

around 45 minutes

Step-by-step explanation:

it takes about 15 minutes to do 1 mile, do the correct math, it'll take about 45 minutes to do 3 miles

Just need help with number 2 I will GUVE brainliest

Answers

The answer is a and d

Can someone please help me understand how to expand 8(3y-4). Please give a detailed explanation.

Answers

Answer:

24y - 32

Step-by-step explanation:

You take the 8 and multiply each term by in the parentheses by 8, so

8(3y - 4) becomes 8 * 3y - 8 * 4 = 24y - 32

Answer:

well, you can multiply them, to simplify the equation, but to expand, try adding or multiplying 2 multiples of 8, in the middle the 4 can change by adding 2+2 or 3+1. For 3y, you can do 3*y.

Step-by-step explanation:

PLEASE HELP! I NEED A WRITTEN RESPONSE. WILL GIVE BRAINLIEST

Answers

Answer:

The more they seem to change the more they stay the same.

5x+8=2x -13 ?
i need help please

Answers

Answer:

x=-7

Step-by-step explanation:

Alrighty. 5x+8=2x-13. Lets do -2x on both sides. We'll get 3x+8=-13. Then lets subtract 8 from both sides. We'll get 3x=-21. Divide by 3 and we'll get x=-7. Hope that makes sense.

Answer:

i think the answer is 7

Step-by-step explanation:

What single percentage change is equivalent to a 18% increase followed by a 13% decrease?

Answers

Given:

18% increase followed by a 13% decrease.

To find:

The single percentage equivalent to a 18% increase followed by a 13% decrease.

Solution:

Let a number be 100.

If it is increased by 18% then the number becomes

[tex]Number=100+\dfrac{18}{100}\times 100[/tex]

            [tex]=100+18[/tex]

            [tex]=118[/tex]

Then, it is decreased by 13%.

[tex]Number=118-\dfrac{13}{100}\times 118[/tex]

             [tex]=118-15.34[/tex]

             [tex]=102.66[/tex]

New number is 102.66.

Now, the percentage change is

[tex]\%\text{ Change}=\dfrac{\text{New number - Initial number}}{\text{Initial number}}\times 100[/tex]

[tex]\%\text{ Change}=\dfrac{102.66-100}{100}\times 100[/tex]

[tex]\%\text{ Change}=\dfrac{2.66}{100}\times 100[/tex]

[tex]\%\text{ Change}=2.66\%[/tex]

Therefore, the Single percentage change is 2.66%.

Several people are trapped in a hollow. 10 of them are named Chris, 23 are named
Ali, and 57 are named Tejas. Approximately, what percent of the people in the hollow are named Chris?

Answers

Answer:

lets figure out how many in total

10 + 23 + 57 = 90

10/90

11%

Step-by-step explanation:

I need help



Only Answer

Answers

Answer:

40%

Step-by-step explanation:

Each box is worth 20%

You know this because the entierty of the box is 100% and it is divided into 5 groups 100 divided by 5 is 20, thus each box is worth 20%.

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