Solve each system using substitution. Check your answer.
x+y=8
y=3x

Answers

Answer 1

Answer:

x = 2

y = 6

Step-by-step explanation:

x + y = 8

x + (3x) = 8

4x = 8

4x ÷ 4 = 8 ÷ 4

x = 2

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

y = 3x

y = 3(2)

y = 6

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

x + y = 8

(2) + (6) = 8

8 = 8


Related Questions

please help with number 5 i don't know how to fill in the table ​

Answers

Use add and u will get the answer

Answer:

find the value of x and then divide it to see what you can to fill it in

help! i'll give out a brainliest! just middle school level. <3!

Answers

Answer:3

Step-by-step explanation:

Answer:

3 hours

Step-by-step explanation:

What’s the answer to this please? Thank u!

Answers

Answer:

I think the answer is C.

Step-by-step explanation:

Have a good day ;-).

Plss answer me fast im in test​

Answers

Answer:

Suppose that we have a circle of radius R.

The total perimeter of this circle will be:

P = 2*pi*R

Where pi = 3.14159...

Now, if we have a section of this circle with an angle A, the "chord" of this section will be:

C = (A/360°)*2*pi*R.

Where you can see that if A = 360° (so the section is the whole circle) the chord is equal to the perimeter.

In this particular case, the chord is equal to the radius of the circle, then we get:

C = R =  (A/360°)*2*pi*R

We need to solve this for A.

R =  (A/360°)*2*pi*R

We can divide both sides by R to get:

1 =   (A/360°)*2*pi

Now we need to isolate A.

(360°/2*pi) = A = 57.3°

This would be the angle in the minor arc.

And the angle for the mayor arc would be the difference between the angle for a whole circle (360°) and the angle of this section (57.3°)

The angle for the major arc is:

A = 360° - 57.3° = 302.7°

Please help me need ASAP

Answers

Answer:

3)Quadratic

Step-by-step explanation:

Brainliest?

Asif wants to buy a Smart Phone for £360. He has already saved £105.
Each week he is paid £90. He saves 25% of his pay.
How many more weeks must he save for to afford the phone?

Answers

Answer:

12

Step-by-step explanation:

100%->£90

1%->£90÷100=£0.90

saves->25%->£0.90×25=£22.50

£360-£105=£255

£255÷£22.50=11

11+1=12

HELLLLLLLLLLLLOOOOOOOO HELPPPPPPP

Answers

Answer:

MARK ME AS BRILLANT ^_^ ~_~

Step-by-step explanation:

Graph the following word problem and then write an equation: Jamal started with $4 in his savings and makes an additional $3 per week.

Answers

Answer:

use desmos

Step-by-step explanation:

put y=3x+4 and make a graph from that its really helpful trust me

20 x(-1) = *
Your answer
-20

Answers

Answer:

Yes that is very much correct y'know thanks for the free points

Step-by-step explanation:

Verify the identity.

[tex]cos 4u = cos^{2} 2u - sin^{2} 2u[/tex]

Answers

Answer:

Yes, it is an identity

Step-by-step explanation:

what is the surface area of the cylinder below?

Answers

Answer:

138.2

Step-by-step explanation:

use the formula 2(pi)radius (height)+2(pi)radius squared

can u mark my answer the branliest pliz

Help me please!
I don’t get this question

Answers

Supplementary angles are angles that when you add them, make 180 degrees, which is a straight line. They are not to be joined together but added. So if one measures 90 degrees more than another, well what's the answer? I hope this helps.


Without graphing, tell if the coordinate (5,3) is a solution to
the inequality shown below by choosing TRUE or FALSE.
2x - y < 5
True
False

Answers

Tru because she say that siry

Jason reads for 90 minutes each day Which equation can be used to solve for m the number of minutes Jason reads in 3 days

Answers

Answer:

90(3) = m or 90 x 3 = m

Step-by-step explanation:

90 minutes per day for 3 days

Solve for x your answer must be simplified. -4+x<9

Answers

Answer:

x<13

Step-by-step explanation:

To solve this, we want to have the isolate the variable x on the left side, by itself without a coefficient. All we have to do to do this is add 4 to both sides, cancelling out the -4 and getting x<13

Answer:

x = 13 + y

Step-by-step explanation:

Simplify:

-4 + x = y + 9

Reorder the terms:

-4 + x = 9 + y

Move all terms containing x to the left all other terms to the right

Add 4 to each side of the equation

-4 + 4 + x = 9 + 4 + y

Combine like terms: -4 + 4 = 0

0 + x = 9 + 4 + y

x = 9 + 4 + y

9 + 4 = 13x = 13 + y

Answer:

x = 13 + y

help me help...........

Answers

Answer:

in the world: an estimated 16,000,000

in Europe:9,500,000

in Germany: 565,000

Step-by-step explanation:

hitler came into power in 1933 so with a little research you get your answer.

Pls give me quotes about not giving up

Answers

Answer:

ok!

Step-by-step explanation:

1: Your allowed to cry, your allowed to scream but you NEVER give UP!

2: Don't give up because great things take time:)

3: Don't give up it's only a way of failure!

I have so much more but my fingers might hurt but remember please dont ever give up you can do it!

Hope this helps !

Draw a model or use numbers to solve the equation 3+x=
11. What is the solution?

Answers

Answer:

The solution of the equation [tex]3 + x = 11[/tex] is [tex]x = 8[/tex].

Step-by-step explanation:

Let [tex]3 + x = 11[/tex], we see that number of equation and variables are both the same and can be solved by algebraic means.

1) [tex]3 + x = 11[/tex] Given

2) [tex]x + 3 = 11[/tex] Commutative property

3) [tex]x + [3+(-3)] = 11 + (-3)[/tex] Compatibility with addition/Associative property

4) [tex]x = 8[/tex] Additive inverse/Modulative property/Definition of substraction/Result

The solution of the equation [tex]3 + x = 11[/tex] is [tex]x = 8[/tex].

Who ever does this for me will get brainly

Answers

Answer:

sorry no can do

Step-by-step explanation:

hehhehehehehehhehe

4+(7-5) to the power of 4

Answers

1296

Step-by-step explanation:

= (4+(7-5))^4

= (4+2)^4

= 6^4

= 6×6×6×6

= 1296

MARK ME AS BRAINLIST

PLZ FOLLOW ME

Complete the​ table, which shows the first and second differences in​ y-values for consecutive​ x-values for a polynomial function of degree 2.

Answers

Answer:

[tex]6.626 \times {10}^{ - 34} 3 \times {10}^{8} [/tex]

10. What is the exponent in this equation: 5*(x-2) = 125 *
O
Х
X-2
5
O
125

Answers

Step-by-step explanationperdonbro solo quo ielos prutnos  j

:

Answer:

Step-by-step explanation:

[tex]5^{(x-2)}=125\\ \\ 5^{(x-2)}=5^3\\ \\ x-2=3\\ \\ x=5\\ \\ \text{So the exponent is 3}[/tex]

1. The amount paid for different weights of oranges at a farmer’s market are shown below. Oranges (lb) Price ($) 2 3 3 4.50 5 7.50 ? 12 (a) Is the relationship between the price and the weight of the oranges proportional? Use the first three rows of data to answer this question. Show your work and explain. How many pounds of oranges cost $12? Show your work.


due today.

Answers

Answer:

Relationship is proportional ;

8 oranges

Step-by-step explanation:

Oranges (lb) 2 ___ 3 ____5 ___?

Price ($) __ 3 ___4.50___7.50_12

For proportionality :

Oranges = k * price

Where, k = constant of proportionality

2 = 3k

k = 2 /3

k = 0.666666

Using k :

Number of oranges at price = 4.50 should be:

0.66666 * 4.50 = 3

Number of oranges at price = 7.50 should be:

0.66666 * 7.50 = 5

Hence, relationship is proportional

Number of oranges at $12

0.66666 * 12 = 8

PLEASE HELP ASAP! Will mark brainliest if correct! This is the last question :(

Answers

Answer:

628 mm^3

Step-by-step explanation:

formula is (pi*height*radius^2)/3. plug in values, and the answer will be A. hoep it helps

Answer:

C

Step-by-step explanation:

V = pi x r^2 x h

V = 3.14 x 10^2 x 6

V = 1884 mm^3

Solve problem using substitution
2x + y = 10
y = x + 1

Answers

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

Point Form: (3,4)

Equation Form:
x=3, y=4

Answer:

x = 3

y = 4

Step-by-step explanation:

2x +  y = 10          -----------------(I)

     y = x + 1 ---------------------(II)

Substitute y = x + 1 in equation (I)

2x + x + 1 = 10    {Combine like terms}

      3x + 1 = 10         {Subtract 1 from both sides}

             3x = 10 -1

             3x = 9 {Divide both sides by 3}

                x = 9/3

x = 3

Plugin x = 3 in equation (II)

y = 3 + 1

y = 4

I also need help with this one

Answers

Answer:

perimeter=2(l+b)=2(16+24)=80

rate =$2per inch

total cost=perimeter ×rate=80×2=$160is your answer

How many four-digit numbers can be made from the numerals 7, 6, 5, and 3?

24
4
12

Answers

Answer:

12 different four digit numbers

Step-by-step explanation:

Answer:

24

Step-by-step explanation:

permutations! order required

P(4,4) = [tex]\frac{4!}{(4-4)!} = \frac{4!}{0!} = \frac{24}{1}[/tex]

This box plot shows information about the marks scored in a test.
a) What was the median number of marks scored?
b) What was the interquartile range of the marks?
c) What was the range of the marks?

Answers

Answer:

a) 58

b) 38

c) 76

Step-by-step explanation:

a) Here we want to get the median

The median of the number is the 3rd line

The value here is 58

b) The interquartile range is the difference between the first and third quartile

The third quartile is the 4th line and its value is 72

The first quartile is the second line which is 34

The interquartile range is thus; Q3-Q1

= 72-34 = 38

c) The range is the difference between the highest and lowest values

The highest value is 86

The lowest value is 10

The range is thus;

86-10 = 76

Which equation can be used to determine the
value of x?

Answers

Answer:

The yellow one

Step-by-step explanation:

Answer:

the yellow one

is the answer

prime factorisation of 27,45 and 54​

Answers

Answer:

27= [tex]3\sqrt{3}[/tex] (3 x 3 x 3)

45= [tex]3\sqrt{5}[/tex] (3 x 3 x 5)

54= [tex]3\sqrt{6}[/tex] (3 x 3 x 3 x 2)

Step-by-step explanation:

Answer:

We found the factors and prime factorization of 27 and 45. The biggest common factor number is the GCF number. So the greatest common factor 27 and 45 is 9.

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