Solve using substitution. You MUST find both variables to be crowned brainiest

2x + 4y = 40
x - 6y = -36

Answers

Answer 1
2x+4y=40
x=-36+6y
2(-36+6y)+4y=40
y=7
x=-36+6x7
x=6
(x,y)=(6,7)
2x6+4x7=40
6-6x7=-36
40=40
-36=-36
(x,y)=(6,7)

Related Questions

simplify the expression
[tex] \sqrt[3]{686x {}^{4} } y {}^{7} [/tex]

Answers

The expression can be simplified as  [tex]7x\sqrt[3]{ 2x} y^7[/tex].

What is an expression?

An expression in mathematics is made up of numbers, variables, and functions (such as addition, subtraction, multiplication or division, etc.)

A phrase in language may contain an action on its own, but it does not constitute a whole sentence.

Given:

The expression = [tex]\sqrt[3]{686x^4} y^7[/tex]

Factorize 686 we get 7³ × 2

= [tex]\sqrt[3]{7^3\times 2x^4} y^7[/tex]

= [tex]7x\sqrt[3]{ 2x} y^7[/tex]

Therefore, the expression can be simplified as  [tex]7x\sqrt[3]{ 2x} y^7[/tex].

To know more about the expression:

https://brainly.com/question/13947055

#SPJ2

help pls will give brainliest to correct answer

Answers

D is correct answers

A computer generates a two-digit number random number. It can be any number from 00 to 99.
Find the probability that it is 99​

Answers

Answer:

1/99

Step-by-step explanation:

total is 99 and there is only one 99 between 0-99 so the probability is 1/99

Solve it below:
...............

Answers

Answer:

i.+25

ii.+18

iii.-10

Step-by-step explanation:

hope this helps

Answer and step-by-step explanation:

We need to show the increase or decrease in Andre's money by representing it through a number.

i. His uncle gave him $25 as a present

This would be +$25

ii. He earned $18 dollars tutoring

This would be +$18

iii. He spent $10 on a book

This would be -$10

Solve for x using
cross multiplication.
4x - 4
4x - 4
7
x + 3
x = [?]

Answers

answer is 1
x=1 hope this helps

Answer:

x = 29

Step-by-step explanation:

Multiply both sides by 7:

[tex]4x-4=\frac{7x+21}{2}[/tex]

Multiply both sides by 2:

[tex]8x-8 = 7x+21[/tex]

Subtract 7x from both sides:

[tex]x-8=21[/tex]

Add 8 to both sides

[tex]x=29[/tex]

At the book fair, Vald spends all of his money on new books. Pamela spends
2/3 as much as Vald. Eli spends 4/3 as much as Vald. Who spent the most?
The least?

Answers

Step-by-step explanation:

Lets take Vald spends $100 on the book fair which are all the money he had.

Pamela Spends 2/3 as much as Vald

Pamela Spends 2/3 x 100 = $66.67

Eli Spends 4/3 as much as Vald

Eli spends 4/3 x 100 = $133.33

From here, we can see Eli Spends the most and Pamela Spends the least.

The radius of a circle is 25 millimeters. Find the diameter.

Answers

If you know the radius of the circle, you double it to get the diameter. if the radius is 25mm than the diameter will be 25mm×2, which gives you 50

What would be the first step you would take in solving the equation 3 - 2x = 4(x + 15) ?​

Answers

The first step would be x+15
I think

Answer:

Distribute the 4

Step-by-step explanation:

You should always distribute first then you should add the 2x. Then combine like terms. Then subtract 15 then divide by six. Then you get the answer x = -2.

Jax played baseball. His batting average for the season was 0.362. What is his batting average in the expanded form

Answers

Answer:

Jax should quit baseball hes bad at it

Step-by-step explanation:

PLEASE ANSWER ASAP: Two stores offer differently priced sales for the same paper towels, according to the table below. Which store offers the better deal, based on a lower unit price per roll?
PLEASE GIVE STEPS AND ANSWER AND NO FILE LINK!

Answers

Answer:

Store 1.

Step-by-step explanation:

Divide the price by the amount of roles of toilet paper. Ex 3.60÷12=.3 and 3.50÷10=.35. Now choose the lower option

Help me with this please

Answers

Answer:

That's called a parabola

Step-by-step explanation:

Since it's graphed in a "U" shape

Find the solution(s) to (x + 2)^2 = 49. Check all that apply.

Answers

Take the square root of both sides of the equation to get (x+2)=7

Then subtract 2 on both sides to get
x=5

A rectangular garden has dimensions of 100 feet by 10 feet. Next season, the garden is decreased to 2/5 of its size what is the scale of the new drawing

Answers

Answer:

4 and 40

Step-by-step explanation:

2/5 of 10 is 4

2/5 of 100 is 40


The diameter of a cylindrical water tank is 10 ft, and its height is 11 ft. What is the volume of the tank?

Answers

Answer:

the answer is 3455 cubic feet

Step-by-step explanation:

π x 100 x 11=3455

A group of friends went to play minigolf at Adventureland. Anna's score was 26 putts, Daniela's score was 31 putts, Luiza's score was 39 putts, and Vera's score was 32 putts.
Find the mean absolute deviation (MAD) of the data se

Answers

Answer:

3.5

Step-by-step explanation:

please answer asap! no scam links or scam comments or reported.

Answers

Answer:

(-10,0)

Step-by-step explanation:

y = 3/2 x + 15

To find the x intercept let y =0 and solve for x

0 = 3/2x +15

Subtract 15 from each side

-15 = 3/2x -15+15

-15 = 3/2x

Multiply each side by 2/3

2/3 *-15 = 2/3 * 3/2x

-10 =x

The x intercept is

(-10,0)

Answer: (-10,0)

Step-by-step explanation:

Is this the correct answer? Pls help me

Answers

Answer:

Yes

Step-by-step explanation:

Yes it is the answer

What is the volume of a sphere with a surface area of 16pi ft^2?

Answers

Answer:

B

Step-by-step explanation:

Sphere Surface Area = 4 • π • r²

For it to equal 16 PI, then radius must equal 2

4*PI*2*2 = 16 PI

Sphere Volume = 4/3 • π • r³

Sphere Volume = 4/3 • π • 2^3

Sphere Volume = 4/3 *PI * 8

Sphere Volume = 32 / 3 PI

Sphere Volume = 10.666 PI cubic feet AND I think that is answer B

which SHOULD read 10 (2/3) PI ft^3

The tape diagram represents an equation.
y
y
7
Write an equation to represe

Answers

Answer:

x + y = 7 an equation to represe.

Find the values of the variables and the lengths of the sides of the kite.​

Answers

Answer: since you didnt answer mine.

Step-by-step explanation:

What is the correct equation for this phrase?
Nine less than twice a number.

Answers

Answer:

[tex]2k - 9[/tex]

Step-by-step explanation:

jsjsjsjsjjsjsksksksksksksksksksjskkwjwjwjwkw

Reduce the following fraction to lowest terms: [tex]16/20[/tex]

Answers

2/2 because 20 can go into 2 and 16 goes into 2
Answer is 4/5 hope this helps

Triangle ABC is graphed on the coordinate plane, as shown below.

Triangle ABC is dilated by a scale factor of 2 with
a center of dilation at the origin to create triangle
A’B’C’. What are the coordinates of the vertices
of triangle A’B’C’?

Answers

Answer:

I believe the answer would be D.

Answer:

D. (4,4), (8,8), (-8,4)

Step-by-step explanation:

We have A (2,2), B(4,4) and C (-4,2)

Dilation by factor of 2: (x,y) => (2x,2y)

A (2,2) => A'(4,4)

B(4,4) => B'(8,4)

C (-4,2) => C'(-8,4)

Find the value of x. Round to the
nearest tenth.
х
12
4
X =
= [ ? ]

Answers

Use cosine trigonometric relation.

[tex] Cos~x=\frac{Adjacent} {Hypotenuse} \\\\ \to cos~x=\frac{4}{12} \\\\ \to cos~x= \frac{1}{3} \\\\ x=arccos(\frac{1}{3})\\\\ x \approx 70°[/tex]

Answer:

70.5

Step-by-step explanation:

We use cosine (adjacent over the hypotenuse) to calculate this:-)

When solving a quadratic using factoring, does it matter if the first x solution is on the left or right side? And same for the second x? In the answer

Answers

Answer:

it is either way, you can put x on the left side or the right side. Just make sure your signs are correct

Mr. Cohen offered Hugo and ___ some coffee when we arrived.
I
Me

Answers

Answer:

me

Step-by-step explanation:

Mr. Cohen offered Hugo and me some coffee when we arrived

If you removed "Hugo and," me would make sense, and not I

For instance:

Mr. Cohen offered me some coffee when we arrived.

    Makes sense

Mr. Cohen offered I some coffee when we arrived.

    Makes no sense

Isaac's finish 7 heavy cleans every 5 minutes Ryan finish heavy 8 clean every 4 minutes how many more cleans did Isaac complete than
Ryan ​

Answers

Answer:

12 more cleans

Step-by-step explanation:

You need to make each person have done work the same amount of time that is a multiple of 4 and 5. The closest is 20. So multiply 5 to 8 cleans for Ryan and 4 to 7 cleans for Issac. 40 cleans for Ryan - 28 cleans for Issac = 12 more cleans for RYAN, not Issac.

help me pls plz please teachers math simple math lol ok smart wow cool points brainly tiktok

Answers

Answer:

5. 30km 6. sorry I forgot how to do these 1. 240m 2. 36cm 3. 64ft

Step-by-step explanation:

¼ y + ⅜ ? I don't know what to do

Answers

Answer:

isn't that a graph perhaps ?

simplify 14x(7xy^14)(-9x^-7 y^-3)

Answers

Answer:

-882y^11/x^5

Step-by-step explanation:

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