I NEED THE ANSWER ASAP

Find the solution to the following system by substitution.

2x + y = 20
y = 2x

A. (10,0)
B. (0,20)
C. (5, 10)
D. (10, 20)

Answers

Answer 1
The answers are A and c
Answer 2
Answer:

(5, 10)

Step-by-step explanation:

2x + y = 20

y = 2x

2x + 2x = 20

4x = 20

x = 20/4

x = 5

2(5) + y = 20

10 + y = 20

y = 10

Solution: (5, 10)

Related Questions

7,433,654 rounded to the nearest 100

Answers

7433700 I think but not sure

What is the slope-intercept form of an equation of a line that passes through the point (0,-1) and is perpendicular to 5x-y=3?

Answers

Answer:

y = -1/5x - 1

Step-by-step explanation:

Perpendicular lines slopes are negative reciprocals of each other.

Write the given equation in the slope-intercept form: y = mx + b

5x - y = 3

-y = -5x + 3

y = 5x - 3       multiply by -1

The slope of the given line is 5 ( the coefficient of the x-term).

The slope of the new equation will -1/5 (this is the negative reciprocal of 5).

Next find "b"  using y = mx + b, the new slope -1/5 and the point (0, -1)

y = mx + b

-1 = -1/5(0) + b

-1 = 0 + b

-1 = b  

Now write the equation y = -1/5x - 1

(BEST AND FASTEST GETs BRAINLIEST)Michael works at a furniture store. He makes commission for every piece of furtniture he sells. He sold a couch for $1245 he got a check for $62.25. What was the % of commission he made?

Answers

Step-by-step explanation:

if 1425 then the answer is 100

if it's 62.25 then 77 percent

Marie uses 2.3 oz of nuts for each bag of trail mix she makes. She uses 27.6 oz of nuts in all.



How many bags of trail mix does Marie make?



Enter your answer in the box.

bags

Answers

Answer: 27.6/2.3 = 12 bags of trail mix

Step-by-step explanation: Hope this helps :)

78 divided by 21?:-:

Answers

Answer:

3.7 or 3.71428571429

Step-by-step explanation:

:/

Answer:

3.714

Step-by-step explanation:

78/21 is 3.71428571429 but you can round that to 3.714

Fred earns $45 mowing the lawn. He spends $5 on music and puts half of what's left in a savings account. He then gets another $5 for washing his neighbor's car.
First, write the expression that represents the number of dollars Fred keeps (and does not put in his savings account), and then simplify.

Answers

The total amount that Fred keeps (and does not put in his savings account) is $20

Total earnings of Fred = $45

Amount spent on music = $5

Amount remaining after spending on music = $40

Fred puts half of what's left in a savings account.

Total amount put in the savings account = 40/2

Total amount put in the savings account = $20

The total amount that Fred keeps (and does not put in his savings account) is $20

Learn more here: https://brainly.com/question/25698362

A trader saved $200.00 for 3 years at 12% simple interest per annum. What will be the total amount in the trader's account at the end of 3years

Answers

Answer:

i).272

ii. (2x-1) (3y+2)

b). 14,400 seconds

Step-by-step explanation:

in pic

(Hope this helps can I pls have brainlist (crown)☺️)

Help me please ASAP
!!!!!

Answers

Answer:pretty sure the -4 would be on the right of the seven. And to the left of -1.

Step-by-step explanation:

Please help me with this answer​

Answers

Answer:

[tex]n = \frac{53}{79}[/tex]

Step-by-step explanation:

79 : 53

divide by 79 on both sides

[tex]1 : \frac{53}{79}[/tex]

[tex]n = \frac{53}{79}[/tex]

Answer: 1 : 1.49

Step-by-step explanation:

the starting Ratio was= 79 : 53

now its 1 : ?

The first number was divided by 79 so we divide the other number by 79.

1 : 53 is now

1 : 1.49 (This is rounded to the 2d.p since the question asked for it)

Scrooge invests $500. He found a bank that would pay him 4% interest, compounded monthly.
a) Type of exponential function.

b) Write a function to represent the situation.

c) If he deposits the whole $500 and does not deposit or withdraw any other amount, how much money would he have after 4 years?

Answers

The exponential function is a growth function. The exponential function that represents the situation is: A(1 +r)^nm. The amount of money that Scrooge would have in 4 years is $586.60.

The formula that can be used to determine the amount Scrooge would have in 4 years is: A(1 +r)^nm

A = Amount invested = $400

r = interest rate = 4/12 = 0,0333

n = number of years

m = number of compounding

$500(1.0333)^(12 x 4) = $586.60.

A similar question was solved here: https://brainly.com/question/15278974

If AZ = 85 ZE=51 find Bc

Answers

The answer is 136.
85^2-51^2
=4624
Then we square root that to get…
68
BUT the answer is saying from b to c so we would have to multiply it by 2 to get…
136

(-1/9) ÷ 6/7 =

Help
Me
Pls
:)

Answers

Answer:

I believe your answer is -7/54

Answer: -0.129

Step-by-step explanation:

Solve.

−3 2/3x = −2 1/5

Answers

Answer:

1 2/3

Step-by-step explanation:

You divide -3 2/3x to -2 1/5 and you will get 1 2/3

Part of a city map is shown. If m 5 = x, which angles also have a measure of x? Select all that apply.
A 1
B 4
C 9
D 12
Thanks!!!

Answers

Answer:

C 9

D 12

Step-by-step explanation:

9 is a corresponding angle to 5 and 12 is an opposite angle to 9

Also by convention, grid lines are at right angles to each other so 5, 6, 7, 8, 9, 10, 11, and 12 are all equal at x = 90°

in what value of b makes y= 2x + b the same as y= 2x what does that value mean

Answers

Answer:

B = 0

Step-by-step explanation:

If you have y = 2x + b and are trying to get to y = 2x

Then just remove the B itself meaning it's value would be 0 so it is as if that variable was never in the actual equation.

Basing ourselves off of the formula "y = mx + b"

B = 0 would mean that the y-intercept of the line is 0

Answer:

0

Step-by-step explanation:

if y=2x and y=2x+b is the same then b must be 0.

tom drives a truck his regular trip is a distance of 280km.he drives at an average speed of 80km/h.for saftey reason his boss puts a speed limit on his trucktoms average speed by 10km/h
how much longer will it takes tom to drive this regular trip​

Answers

Answer:

Step-by-step explanation:

280 / (80 - 10) - 280 / 80 = 0.5 hr longer

A car travels at an average speed of 56 miles per hour how many miles does it travel in 5hrs and 30min

Answers

Answer:

308 miles

Step-by-step explanation:

speed * time = distance

56 * 5.5 = 308

308 miles

what is the volume of the cone if the volume of the cylinder is 51L.​

Answers

Answer:

17L

Step-by-step explanation:

Volume of cone = 1/3(Volume of cylinder )

= 1/3 * 51L

= 17L

Up arrow, right arrow, down arrow, left arrow, up arrow, right arrow, down arrow, left arrow. What's the conjecture

Answers

Answer:

The correct option is;

If one reflects a figure across the y-axis, the points of the image can be found using the pattern (x, y) Right-arrow (x, -y).

If one reflects a figure across the y-axis, the points of the image can be found using the pattern (x, y) Right-Arrow (-x, y).

Taking the result from the first reflection (x, -y) and applying the second mapping rule will result in (-x, -y), not (y, x), which reflection across the line y = x should give

Step-by-step explanation:

We have that for reflection across the x-axis, (x, y) → (x, -y)

For reflection across the y-axis, (x, y) → (-x, y)

Therefore, given that the pre-image before the reflection across the y-axis is (x, -y), we have;

For reflection across the y-axis, (x, -y) → (-x, -y)

For reflection across the line, y = x, gives (x, y) → (y, x) which is not the same as (-x, -y)

If you randomly select a card from a well-shuffled standard deck of 52 cards, determine the probability that the card you select is not a spade.
A. Write your answer as a simplified fraction.
B. Write your answer as a decimal, rounded to the nearest thousandth.
C. Write your answer as a percent. Round to the nearest tenth of a percent and don't forget to include a percent sign, %, in your answer.

Answers

Answer:

a. 1/13

b. 0.077

c. 7.7

Step-by-step explanation:

a. there are 4 of the 6 in a deck of cards so the probability of taking this cards from the deck of 52 cards is 4/52. Given you 1/13.

A sample in which each element in a population has a equal chance of being selected

Answers

Answer:

simple random sample

Step-by-step explanation:

I hope that's it

Greg received 3/8 of the votes cast for class secrectary. How many votes did he receive
Write your answer in simplest form
( show me how you got your answer like an explanation please Thanks! :)

Answers

Answer: 3/8

Step-by-step explanation: We don't know how many votes are there for the class secretary.

Write 5/6% as a decimal number.​

Answers

Answer: 5/6 as a decimal is 0.833

Step-by-step explanation:

just divide 5 by 6

0.8 hope this helps :).

Please please help please help me help help me please help me

Answers

Answer:

m = 6

Step-by-step explanation:

m = 9-3 / 1 - 0

m = 6/1

Who ever solve this first I will give Brainliest to them

Answers

Answer:

9

Step-by-step explanation:

In order to solve this problem, you need to understand how the area of a parallelogram works. If you already know how the area of a parallelogram and the area of a triangle are related, then adding 79 and 10 and subsequently subtracting 72 and 8 to get 9 should make sense

4х = 32
А. x= 9
В. x= 8
с. x= 28
D. х = 128

Answers

Answer:

B

Step-by-step explanation:

Step 1: Divide both sides by 4.

4x/4 = 32/4

4x/4 leaves you with x by itself, and 32/4 is 8. So x = 8

THIS QUESTION IS WORTH 20 PTS!!! WILL REWARD BRAINLIEST!!!

Convert the exponential equations into logarithmic form.

Answers

Answer:

[tex] \: [/tex]

1. C = 81 , D = 4

2. E = 625, F = 4

3. G = 10,000 , H = 4

4. J = 0.01 , K = -2

Hope it helps you ™

Where do I put the parenthesis to make it true?

5 – 6w – 5 – 95 + 2w = –48w – 70

Answers

Answer:

i just stole your points thank you

Step-by-step explanation:

5 – 6w – 5 – 95 + 2w = –48w – 70

-6w + 2w + 48w = -70 -5 + 5 +95

44w = 25

w=25/44

Mrs. King's famous peanut butter cookies call for 1 cup of peanut butter for every 1/2of a cup of oil. Today, she wants to make a huge batch with 1 cup of oil. How much peanut butter should she use?

Answers

2 cups of peanut putter for one cup of oil.

Given: D is the midpoint of AC, ED = FD, and angle EDA = angle FDC

Prove that: Triangle AED = Triangle CFD

Answers

Answer:

Step-by-step explanation:

Side-Angle-Side postulate (SAS)

There are ΔAED and ΔCFD triangles that are congruent due to the SAS congruence postulate.

What are congruent triangles?

Two triangles are said to be congruent if their corresponding sides and angles are equal.

As per the given question,

D is the midpoint of AC, ED = FD, and angle EDA = angle FDC

In ΔAED and ΔCFD,

Side DE = Side DF

m∠EDA  = m∠FDC

Side AE= Side FC

According to SAS, two triangles are congruent if the two sides and the included angle of one triangle are equal to the corresponding sides and the included angle of the other triangle.

Thus, both triangles are congruent.

Hence, there are ΔAED and ΔCFD triangles that are congruent due to the SAS congruence postulate.

Learn more about congruent triangles here:

brainly.com/question/4364353

#SPJ2

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