Mathematics Middle School

Find the value of x that makes the equation true.
2x + 3 = 20

A. x= 17/2
B. x= 5
C. x= 10
D. x= 2/17

Answers

Answer 1

Answer:

A. x = 17/2

Step-by-step explanation:

2x+3=20

to find the value of x, isolate the variable!

1. Subtract 3 from each side of the equation

2x + 3 - 3 = 20 - 3

[+3-3 is 0 so we can take that out; 20-3=17]

2x = 17

2. Divide each side by 2

2x/2 = 17/2

[2x/2 = 2/2*x = 1*x = x]

x = 17/2

hope this helped n happy mathing lmfaldsfk

Related Questions

Mercury: 3.3022*10^23 kg earth: 5.9722*10^24 kg


venus: 4.8685*10^24 kg mars: 6.4185*10^23 kg


What is the average mass of all four inner planets. Write your answer in scientific notation. I need this question by tuesday 10:30

Answers

Answer:

The average mass of the inner planets is = 2.9531925 x 1024 kg.

Monica sells ice cream bars at the beach. In addition to a fixed salary, she earns a commission for each ice cream bar she sells. The table shows Monica's total earnings, y, from selling x bars of ice cream:

Ice Cream Sales and Earnings
Number of Bars Sold (x) Total Earnings (dollars) (y)
0 35
1 38
2 41
3 44

Which equation best shows the relationship between x and y?
y = x + 35
y = 3x + 38
y = 3x + 35
y = x + 38

Answers

Y=3x+35
The starting number is 35 and I goes up 3 times the number of ice cream sales.

A integer can be represented by the equation x+x+2+x+4=66-x . What is the value of x?

Answers

answer would be x=15

The table below shows the approximate populations of the three countries.




How many people live in China, France, and Australia in total? Write your answer in scientific notation.

Answers

Answer:

A lot

Step-by-step explanation:

AND I MEAN A LOT

Answer:

In total, about 1,416,300,000 people.

Step-by-step explanation:

Four people can paint a house in six hours. How many hours would it take three people to paint the same house, assuming everyone works at the same rate?

Answers

Answer:

8 hrs

Step-by-step explanation:

divide 4 by 3 then times it by six

8 hours is the answer

Help plz will give brainliest :D

Answers

Answer: 2001/87=220 (2001/87 = 23 then 23+87 equals 110 then 110+110 equals 220) then i think its 2001/87=23+220 then just 2001/87=23

Step-by-step explanation:

I do not know if im wrong! this was kinda confusing for me as well but i tried my hardestt

Answer:

2001/87=220 (2001/87 = 23 then 23+87

Step-by-step explanation:

please help !!!
for 10 point
you MUST answer and explain

Answers

Answer:

Step-by-step explanation:

area = 1/2 × base × height

area = 1/2 × 6 × 15 =

45cm I hope this helps :)

What does -2/3 > 1 indicate about the positions of -2/3 and -1 on the number line?
A) -2/3 is located to the right of -1
B) -2/3 is located to the left of -1
C) -2/3 is located on the right of 0, and -1 is located on the left of 0
D) -2/3 is located on the left of 0, and -1 is located on the right of 0

Please answer ASAP!

Answers

Answer:

A) -2/3 is located to the right of -1

Step-by-step explanation:

-2/3 is located to the right of -1 because it is a smaller number, and because of the greater than sign.

Answer: D) -2/3 is located on the left of 0, and -1 I located on the right of 0

4.How does the function y = -2x + 6 differ from the linear parent function?
(parent is just y=x)

Answers

The function y= -2x + 6 differs from the linear parent function y=x because it is y=mx+b

Determine the ending position by adding and subtracting the indicated steps from each starting position. List your answers in order.

Answers

3-4+5=4
7-6+2=3
5-2+4=7
0-5+8=3
-4-3+7=0

I think that’s how you do it? If it’s going left to right for each
4
3
7
3
0
Those are the answers in order nwn

Which of the following is 7/18 closest to?
1/2
0
1

Answers

1/2 I think is the answer

Answer:

1/2

Step-by-step explanation:

WILL GIVE BRAINLIEST ANSWER

Answers

Answer:

0.07 or 7cents

Step-by-step explanation:

155 divided by 3.10 is 0.02 so two cents a piece, 85 divided by 7.65 is 0.09 so they are 7 cents more a piece

Help me plsss I’m super stuckkk

Answers

Answer: 8 maybe?

Step-by-step explanation:

6. The table shows the equations Ms. Valez discussed in math class today.


Explain the pattern of zeros in the product when multiplying
by powers of 10.

Answers

Answer:

One zero is always added when the power is added by +1

Step-by-step explanation:

one zero is always added when the power is added by 1

2. y= -3x+8 and 6x+2y= -10 pls help!! slove as (x,y)

Answers

No solution. If you rearrange things a bit, you have

6x-2y=10

3x-y=2

Double the 2nd equation and you have

6x-2y=4

There's no way 6x-2y can be both 10 and 4.

6)6&/=y so then you multiply bu7

can somebody help me with this

Answers

Answer:

Yes, every input would have exactly one output.

Step-by-step explanation:

You don't even have to solve it, you can look at the x-values and see if there is two of the same number. If there were two of the same number that would mean it is not linear.

Hope that helps and have a great day!

Answer:

Yes

Step-by-step explanation:

y=1.5(6)-2

y=7

y=1.5(3)-2

y=2.5

Brian has already prepared 1 kilogram of dough and will continue preparing 1 kilogram of dough every hour. Write an equation that shows the relationship between the hours worked x and the dough prepared y.

Write your answer as an equation with y first, followed by an equals sign.


Please help me

Answers

Answer:

y = x + 1

Step-by-step explanation:

Answer:

y = x + 1

Step-by-step explanation:

For each table, answer: What is the constant of proportionality?

Answers

Answer:

It would be a=1 b=7, a=1 b=120, a=1 b=25, a=1 b=2.5

Step-by-step explanation:

Here you can see that 2 = 14 now if u think about it u can just divide 14 and 2 which you will get 7 which means a=1 and b=7 now for the other questions its all the same just divide

Please help me I will give out extra points and the brain thing. image below

What is the equation of this line?


y=3x−2


y=1/2x−3


y=2x−3


y=1/3x−2

Answers

Y=3x-2 that’s the answer
Answer: y=3x-2

So to find the y-intercept, you look to see where the point is located when it crosses the y-axis. In this case, it crosses at (0, -2).

To find the slope, you do rise/run. Pick one point to start with. Count upwards, then over. You could also use slope formula if you know two points on the graph: slope= (y2-y1) / (x2-x1)

Which points are plotted correctly on their accompanying number line? Check all that apply. Point: Negative StartFraction 7 Over 8 EndFractionA number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is 1 mark to the right of negative 1. Point: Negative one-halfA number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is half-way between 0 and 1. Point : Negative one-fourthA number line going from negative 2 to positive 2 in increments of 1. There are 8 equal spaces between each number. A point is 2 spaces to the right of negative 1.

Answers

Answer:

A, B, D.

Step-by-step explanation:

Proof in picture

8. The figure shows a triangle ABC where
ZABC = 35. H lies on BC such that the length
of HC is twice that of BH. Find ZACB.

Answers

Answer:

theres no choices ?

Step-by-step explanation:

Answer:

{{BC,35H}}

Step-by-step explanation:

You are canning 40 cups of applesauce. You have 20 glass jars, each of which will hold 134 cups of applesauce. Choose the correct explanation(s) that explain why you do not have enough jars.

Answers

Answer:

You DO have enough jars! I do not understand!

Step-by-step explanation:

You are only canning 40 cups. This will be filled in less than one jar!

You do have enough cups

PT and Its Converse: Estimating Square Roots

1. To Estimate a square root, you must first list all of your perfect squares here up to
100:
2. To Estimate a cube root, you must first list all of your perfect cubes here up to
1000:

Next, find the perfect square or perfect cube that your number lies between.

Someone please help, I will give brainliest!

Answers

Answer:

1) 10^2

2) 100^2

Step-by-step explanation:

I believe this is the right answer...

let me know of it helps.

:)

The estimate of the square roots and cube roots of numbers can be found by an iterative process;

The Pythagoras's Theorem, PT, and its Converse: Estimating Square Roots

The steps to estimating square roots are;

1. The perfect squares that are close to the number for which the square root is sought are listed

Example, to find the square root of 5, we have;

2², 5, 6, 7, 8, 3²

Therefore, the perfect square close to 5 are those of 2 and 3

The number 5 is then divided by the root of the number with closest perfect square, which is √4 = 2

Therefore, we have;

[tex]\dfrac{5}{2} = 2.5[/tex]

The average of the result of the division and the divisor is then found as follows;

[tex]\dfrac{2 + 2.5}{2} = 2.25[/tex]

The required number is then divided again by the average, 2.25, again, to get;

[tex]\dfrac{5}{2.25} = 2.\overline 2[/tex]

The average of the new quotient and the divisor is found again as follows;

[tex]\dfrac{2.25 + 2.\overline 2}{2} = 2.36\overline 1[/tex]

Repeat dividing the required number by the average again as follows;

[tex]\dfrac{5}{2.36 \overline 1} = 2.23602484472[/tex]

The average is found again as 2.23606797792

Dividing 5 gives 2.23606797708

Therefore;

2.236067978 is a good estimate of √5 approximation

2. To estimate a cube root of a number, the closest, numbers with a perfect cube are listed

To estimate the cube root of 9, the closest perfect cubes are 8 and 27

We have;

∛8 < ∛9 < ∛27

2 < ∛9 < 3

Given that we have;

The difference between 9 and 8 = 1

The difference between 9 and 27 = 18

Therefore, the cube root of 9, ∛9 ≈ 2

For more accurate value, we have

[tex]{} \hspace {8pt}2.08\\3| \overline {9.000 000}\\ {} \hspace {-3pt} -8\\ {} \hspace {8pt} 1 \ 000 \ 0[/tex]

Where, the 2 in the quotient is given from the closest perfect cube to 9;

2³ = 8 < 9

The 8 is given from 2³ = 8

The 1 is given from 9 - 8 = 1

The 000, is obtained by bringing down 000, from the dividend

Next; Multiply 300 by 2² to get 1,200

1,200 is larger than 1,000, which is the remainder, therefore, a decimal point and 0 is added to the quotient, and a zero is added to the remainder to give 10,000, from which we have;

[tex]\dfrac{10,000}{300 \times 2^2} = 8\frac{1}{3}[/tex]

The quotient, 8 is added to the quotient line after the zero, to get;

∛9 ≈ 2.08

Learn more here:

https://brainly.com/question/24981685

The graph shows the number of quarts picked and the amount of money the customer paid.

Part A
What is the constant of proportionality, and what does it mean in this situation?

Answers

Answer:

it is 0

Step-by-step explanation:

Using the recipe from earlier, how much fruit punch can you make if you have 50 cups of cranberry juice, 40 cups of apple juice, and 30 cups of grape juice?

Answers

Answer:

The answer is 42.

Step-by-step explanation:

You're welcome.

Answer: 42
I hope this works it might not but at least u know

Hi , hello 9+5-4+2=?

Answers

Answer:

its 12

Step-by-step explanation:

12 Is the answer yw

So I was doing a hooda math escape game, and forgot how to do these. Can you help me?

Answers

to find the radius you divide the circumference by 2pi

area is pi times radius to the 2nd power

I GIVE 70 POINTS !!!!!!!!!!

Chris bought 10.4 gallons of gasoline. There are approximately 3.8 liters in 1 gallon. Which measurement is closest to the number of liters of gasoline Chris bought?


Try and give a good explanation bc I have a test over proportions tomorrow.

Thanks!

Answers

Answer:

395.2

Step-by-step explanation:

104 x 3 .8 = 395.2

Good luck on the test!

we know there are about 3.8 liters in 1 gallon. if Chris bought 10.4 gallons, that’s 10.4 * 3.8 liters

10.4 * 3.8 = 39.52 liters

as a proportion, we can write it as
3.8/1 = x/10.4
(number of liters per number of gallons. there are 3.8 liters per gallon, but we don’t know how many liters in 10.4 gallons yet, thus the x)

then you cross multiply (multiply one sides denominator to with the other sides numerator twice and set them equal)to get
1x = 3.8*10.4

simplify
x = 39.52 liters

hope this helped!

Students in the school band are selling calendars. They earn $0.40 on each calendar they sell. Their goal is to earn more than $327. Write and solve an inequality to find the fewest number of calendars they can sell and still reach their goal.

Answers

Answer:

You have < and > so it equals carrot.

Step-by-step explanation:

Carrot are for the answer

.4x > 327

Divide both sides by .4
The students will need to sell at least 818 calendars

Solving Equations and Systems of Equations
Without solving the systems, explain why the following systems must have the same solution.
System (i): 4x - 5y = 13
3x+6y=11
System (ii): 8x – 10y = 26
X – 11y = 2

Answers

Answer:

Because they are equal

Step-by-step explanation:

Guy above me is in fact completely correct. I suggest taking his answer.
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