Mathematics Middle School

Solve the equations in Parts A and B using inverse operations. Check your solutions. In your final answer, include all of
your work
Part A: 5 + 2 = 232 + 13
Part B:5 + 1 = 23% + 13

Answers

Answer 1

Answer:

Part A: 7 = 245

Part B: 6 = 1323/100

Step-by-step explanation:

Part A: Add the numbers 5 and 2 which you get 7 and then you add 232 and 13 which gives you 245

equation version: 5 + 2 = 7

232 + 13 = 245

7 = 245

Part B: In order to convert a precent to a ratio, divide it by 100

23/100

5 + 1 = 23/100 + 13

5 + 1 = 6

23/100 + 13 = 1323/100

6 = 1323/100

Hope this helps :)

Answer: B

Related Questions

X + 7 = 23 middle school work

Answers

Answer:

X = 16

Step-by-step explanation:

23 - 7 = 16

Answer: 16

Step-by-step explanation:

23 - 7 = X

To find X we do the inverse of addition which is subtraction. The 7 cancels out and the 23 becomes a 16. We can even check our answer. 16 + 7 = 23

This is for my little brother but I'm too tired to do it-

A graph shows that 30% of the people in a town speak Spanish. If the town has 800 people, how many people can be expected to speak Spanish?

Answers

Answer:

240

Step-by-step explanation:30/100 times 8

240

If you take .30 times 800 u get 240

The Greenbaum family agreed to pay for 3 months of an online TV service in exchange for a $5 credit on the bill each month. If the Greenbaums spend a total of $11.85 on the service over the 3 months, what is the normal price of one month of online TV service?
$5.00
$6.85
$8.95
$30.55

Answers

Answer:

8.95

Step-by-step explanation:

I saw this once on my sister computer the answer was 8.95

Answer:

8.95 is right

Step-by-step explanation:

listen to the person above me and then also give them brainliest. they deserve it.

Has anybody done Apex 2.2.4 math practice for 8th grade? If so could you send me the answers? I’m totally lost...

Answers

Frac x 1/18 =1/18 a c f r
Frac x 1/18=1/18 acfr

- 4^2 + 3^2 ÷ 3

Show all work pls need help

Answers

Answer:

- 13

Step-by-step explanation:

PEMDAS:

P: Parentheses

E: Exponents

M: Multiplication

D: Division

A: Addition

S: Subtractions

Step 1:

- 4² + 3² ÷ 3       Equation

Step 2:

- 16 + 9 ÷ 3    Exponents

Step 3:

- 16 + 3     Divide

Answer:

- 13    Add

Hope This Helps :)

Answer is -13 because it’s right I think

A linear function can be used to estimate the decrease in snowfall measured since 1920. The decrease in the annual snowfall has been on average 0.24 inches per year. Let x represent the number of years since 1920, when the measurements began, and let y represent the annual snowfall. The initial measurement in 1920 was 48.6 inches. Using the average change and initial measurement, which is the best estimate of the annual snowfall in the 78th year after records were kept? Round to the nearest hundredth.

Answers

Answer:

29.88 inches

Step-by-step explanation:

Equation of a line is given in the form  

Where

m is the slope [rate of change, here, rate of decrease]

c is the y-intercept [at 1920, the snowfall]

From the problem, we see that snowfall decreases by 0.24 inches per year, that will make the slope (m) to be -0.24

Also, at 1920, the initial measurement was 48.6 inches of snow, that is the y-intercept (b). Thus, we can write the equation of this line as:

y = mx + b

y = -0.24 x +48.6

To find annual snowfall, 78th year after 1920, we simply plug in 78 into "x" of the equation just found. So:

y = -0.24(78) + 48.6 = 29.88 inches

Answer:

29.88 inches

Step-by-step explanation:

I took the quiz

Which of the following situations creates a unique triangle?

A) isosceles triangle with one [tex]80^\circ[/tex] angle, and base angles of [tex]50^\circ[/tex]
B) [tex]90^\circ[/tex] angle, 4 in. leg, 3 in. leg
C) Triangle with three [tex]60^\circ[/tex] angles
D) A right isosceles triangle

Answers

Answer:

A)  isosceles triangle with one [tex]80^{o}[/tex] angle, and base angles of [tex]50^{o}[/tex]  

Step-by-step explanation:

A unique triangle will be produced if you are given: all three sides (Side-Side-Side) two sides and the included angle (Side-Angle-Side) two angles and the included side (Angle-Side-Angle)

whats the answer to y/6+6=-19

Answers

Answer:

y = -150

Step-by-step explanation:

y/6+6=-19

Subtract 6 from each side

y/6+6-6=-19-6

y/6 = -25

Multiply each side by 6

y/6 * 6 = -25*6

y = -150

The correct answer is 57

5 ( f + 4) = 4 ( f - 6)

Answers

f = -44

Hope this helps :)

Answer:

The answer is -44

Step-by-step explanation:

First, you use distributive property on each side.

5xf + 5x4 = 4xf-4x6

5f+20=4f-24

Then you subttract 5f to both sides of the equation.

5f+20=4f-24

-5f       -5f

20=-1f-24

Next, you add 24 to both sides of the equation.

 20=-1f-24

+24     +24

44=-1f

Finally, you divide -1f from each side of the equation.

44=-1f

/-1f   /-1f

Your final answer should be -44=f

or f = -44

Hi it will be so nice if u could help me thx!

Answers

Answer:

11. Domain: (-infinity, +infinity)  Range: (-infinity, +infinity)

12. Domain: (-infinity, +infinity)  Range: f(x) = 25

13. Domain: (-infinity, +infinity)  Range: (-infinity, +infinity)

Step-by-step explanation:

Thanks for the free points btw, and sorry.

PLEASE HELP!! 12 POINTS AND WILL MARK BRAINLIEST TO WHOEVER ANSWERS QUICKLY AND CORRECTLY!!

2. (2, 0) and (0, 3)

The equation for these ordered pairs is y = 3/2x + 3

A. True
B. False

Answers

Answer:

False

Step-by-step explanation:

Answer: This is False

HELP ASAP!!!
Complete the net worth statement. What is the net worth of the individual?

A) $1,129,718

B) $263,318

C) $518,095

D) $611,623

Answers

A is the answer because its right according to the chart
The answer is A
I took the test

A cylinder has a volume of 1884cm^3. Find the volume of a cone with the same radius and height as the cylinder

Answers

Answer:

628

Step-by-step explanation:

The volume V of a cylinder whose radius is r and height is h is given as

V = πr²h

The volume of a cone v of a radius r and height h is also given as

v = 1/3 πr²h

As such , given that the cylinder has a volume of 1,884 cm ³, the volume of a cone with the same radius and height as the cylinder

= 1/3 * 1,884 cm ³

= 628 cm ³

i think it is 628 so tell me if i’m correct :)

pls help! will mark brainliest!

Answers

Answer:

150

Step-by-step explanation:

4z=6×100

4z=600

z=600÷4

z=150

100/4 = 25
25 x 6 = 150
z = 150

word problem

TRAIL MIX
The equation 4.05p+ 14.40 = 4.50(p+ 3) represents the number p of pounds of peanuts you need to make trail mix. How many pounds of peanuts do you need for the trail mix?

Answers

Answer:

p=2

Step-by-step explanation:

4.05p+14.40=4.50(p+3)          < equation

4.05p+14.40=4.50p+13.50     < multiply

14.40=.45p+13.50                   < subtract

.9=.45p                                    < subtract

2=p                                          < divide

use photo math it works really well

Help pretty please ^^ 100 points will be giving a brainlist if i get it right!

Answers

The ratio of balls to tennis balls is 4:7 is a correct statement; however, we need to check the other questions for reliablity.

For every 6 basketballs, there are 10 dodge balls is a wrong statement because the number of basketballs is 12 and the number of dodge balls is 18 not 20. So, this answer is wrong.

None of the above is wrong because the first answer is correct so we can cross out c.

Now we know that A is the correct answer!

It is A, the ratio of soccer balls to tennis balls is 4:7.

Soccer Balls : 8

Tennis balls: 14

8 divided by 2 is 4 and 14 divided by 2 is 7.

4:7

B is not right because

Basketball: 12

Dodgeball: 18

"For every 6 basketballs, there are 10 dodge balls."

12 divided by 2 is 6

If it was 10 dodge balls for every 6, dodge balls would be 20 because there are 2 6s in a 12.

And it can't be C, none of the above because A is correct.

So yea it's A.

Hello I need help if you have sometime will you help me? Thank you :)

Answers

Answer:

blank 1: 0.54

Blank 2 : 1.08

Blank 3: 0.12

Blank 4 : 1.62

Blank 5: 0.34

Blank 6 : 4.59

Step-by-step explanation:

Answer:

2 row 0.12 0.16 3 row is

Step-by-step explanation:

Recipe 1 & 3
Recipe 2 & 3
Recipe 1 & 2
All recipes taste the same.

Answers

Answer:

Recipes 1 and 2

Step-by-step explanation:

To find the answer, we need to simplify the ratios:

4:6 = 2:3

6:9 = 2:3

9:12 = 3:4

We can now clearly see that Recipes 1 and 2 will taste the same, since they have the same OJ to PJ ratio.

Answer:

The answer is Recipe 2&3 because both of the factors for 2&3 can be divided by 3 Recipe 1 can‘t.

Step-by-step explanation:

Does that make sense?

please help (screenshot included)

Answers

I Think it’s 26 hours! Hope it helps u!

The model represents an equation.
What value of x makes the equation true?

Answers

-6x=10

Explanation :/

Sandy works at a clothing store. She makes $6 per hour plus earns 10% commission on her sales. She worked 79 hours over the last two weeks and had a total of $2,822 in sales before taxes.

Which of the following is closest to how much she will earn in hourly wages and commission for those two weeks?
A.
$282
B.
$474
C.
$330
D.
$756

Answers

The answer is D, plz mark brainliest it right

Answer:

$778.60

Step-by-step explanation:

Sandy worked 80 hours over the last two weeks. She makes $6 per hour, so she earned

$6 x 80 =480

Sandy had a total of $2,986 in sales before taxes. Sandy earns 10% commission on her sales, so

$2,986 x 0.1 = 298.60

is Sandy's earning on sales.

In total, Sandy earned

$480 + $298.60 = $778.60

Please help! Twenty points.

Answers

Spefify your help please
C but i need 20 characters so......

The square below is the resulting cross section of which of the following diagrams?

Select all that apply

Answers

The answer is b and d

Of the teacups in Sophie's Tea Shop, 1/5 are red and another 1/5 are indigo. What fraction of the teacups are either red or indigo?

Write your answer as a fraction or as a whole or mixed number.

Answers

Answer:

I think the answer is 2/5

Step-by-step explanation:

I think so because if you add up 1/5 and 1/5 you get 2/5. If this is what the question is asking.

Answer: 2/5 of the teacups are either red or indigo

Step-by-step explanation:

You take 1/5 corresponding to red + 1/5 corresponding to indigo so 1/5 + 1/5= 2/5

Dana’s parents add $2 to her savings account for every $20 she puts in the account.
Which equation models the relationship between the amount her parents put in the account, p, and the amount Dana puts in the account, d?

A)p equals one tenth d

B)p equals one half d

C)p equals two d

D)p equals ten d

Answers

Answer:

A) p = [tex]\frac{1}{10}[/tex] d

Step-by-step explanation:

20(which is d) x [tex]\frac{1}{10}[/tex] = 2 (which is p)

cross checking always helps!

Answer:

a

Step-by-step explanation:

Simplify 25(14–27)+25÷16.
marking brainlest

Answers

Answer:

-18.75 or -18 3/4

Step-by-step explanation:

I would like brainliest because I can'y move on anywhere from my account until i get three more.

Answer:25(14-27)+25÷16

25(-13)+25÷16

-325+25÷16

-300÷16

-18.75

Step-by-step explanation: I HOPE THIS HELPS CAN I GET BRAINLIEST PLZ

BRAINILIST TO THE FIRST PERSON TO ANSWER THIS AND GET IT CORRECT!!!!!!! :>

Answers

Answer:

24.554

Step-by-step explanation:

Answer:

24.554

Step-by-step explanation:

What is the percent increase from $399.00 to $535.00?? I WILL MARK YOU AS BRAINLIEST

Answers

The answer should be 34.09%
i believe it should be 34.08

what is surface area of cube if the only number is 5

Answers

Answer - 150
One square has an area of 25 (5x5) so 6 squares (25x6) have an area of 150.

Which is greater?
x + 3 - x -(1+ 2x + 2)
x - 1 - x + 2 -(2 + x - 1)

Answers

Answer:

the first one

Step-by-step explanation:

The correct answer is the first one
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