Mathematics Middle School

When using re-grouping to solve 21 x 43, what are the four products that would be calculated and then added?
800 + 3
80 + 40 + 60 + 3
800 + 40 + 60 + 3
800 + 40 + 6 + 3

Answers

Answer 1

Answer:

c

Step-by-step explanation:

21×43

=(20+1)×(40+3)

=800+40+60+3

Answer 2
The third one because 21 times 43 is 903 and 800 + 40 + 60 + 3 = 903

Related Questions

An artist builds a sculpture out of metal and wood that weighs 14.9 kilograms. ¾ of this weight is metal, and the rest is wood.

How much does the wood part of the sculpture weigh?

Answers

Answer:

I think you would have to convert 14.9 kg to fraction and multiply by 3/4

Answer:

convert 14.9 kg to fraction and multiply by 3/4

Step-by-step explanation:

:P

- Can a whole number be 5 more than another number and
also 5 times as many as the other number? Give an example
to explain your answer.

Answers

Answer:

Nope

Step-by-step explain

1+5=6

6/5 is not 1

2+5=7

7/5 is not 2

NO, a whole number can't be 5 more than another number, & 5 times another number.

Let a whole number be = n

5 more than whole number = n + 5 ; And 5 times the whole number = 5n

Equating them , n + 5 = 5n

5n - n = 5

4n = 5

n = 5 / 4

5 / 4 is not a whole number, as it is in fractional form.

Also, 5/4 + 5 = (5 + 20) / 4 = 25 / 4

5 / 4 x 5 = 25 / 4

Both above sum & product are also in fractional form, so are not whole numbers.

Hence proven.

To learn more, refer https://brainly.com/question/17429689?referrer=searchResults

Compare the following ratios: (Use >, < or = sign in the place holders)

7) 2:3 ___ 4:1

8) 1:2 ___ 3:6

9) 3:5 ___ 2:4

10) 6:7 ___ 4:8

11) 5:1 ___ 7:9

12) 4:6 ___ 7:6

13) 1:8 ___ 4:11

14) 5:2 ___ 10:4

15) 4:3 ___ 2:4

16) 7:2 ___10:3

Answers

8 is the correct answer trust me
7. <
8. =
9. >
10. >
11. >
12. <
13. <
14.=
15: >
16.>


Woooooo

Pls HELPPP IM CONFUSED ON THIS SINGLE QUESTIONNN PLS SHOW HOW TO SOLVE IT WITH UR ANSWER

Answers

Answer:

c it's only the closest/similar to the triangle

Answer:

Step-by-step explanation: C because it looks very similar

I lied earlier I do need help pls help with the answers I only did the first two but I don't know if I'm right

Answers

i cant see the questions- pls turn off your leds and post again

Which of the following is NOT between -7 and -4 on the number line?

-7.2

-4.8

-6

-5.01

Answers

Hi,

-7.2 is NOT between -7 and -4 on the number line.

✅(•‿•)

-7.2 would be the answer

HELP ILL GIVE BRAINLY

Answers

Answer:

y=-115

Step-by-step explanation:

y/5+4=-19

y/5=-23

y=-115

Answer:

-19 - 4 = -23. y = 20

Step-by-step explanation:

A triangle has an area of 15. One of its sides has length 10. What is the length of the altitude to that side?

Answers

Answer:

Altitude = 3

Step-by-step explanation:

Given the area of a triangle as 15, with a length of 10:

We can use the following formula for finding the area of a triangle:

Area (A) = ½bh  

Where:

Base (b) = 10

Height (h) or altitude = unknown

Substitute the given values into the formula:

Area (A) = ½bh  

15 = ½(10)h  

15 = 5h

Divide both sides by 5 to solve for h:

[tex]\displaystyle\mathsf{\frac{15}{5}\:=\:\frac{5h}{5} }[/tex]

h = 3

Therefore, the length of the altitude or height of the given triangle is 3.

Haley and Sabrina are both training for a race. Haley runs 4.2 miles each day. Sabrina has been running 2/3 as many miles each day as Haley. Next week, Sabrina is going to increase the miles she runs each day by 25%. Haley and Sabrina both train by running 6 days each week. What is the total number of miles Sabrina will run next week to train for the race?

Answers

Answer:

Sabrina will train 21 miles next week for the race.

Step-by-step explanation:

2/3 of 4.2=2.8

%25 more of 2.8=3.5

3.5*6=21 miles

Answer:

3.5*6=21 miles

Step-by-step explanation:

4x + 23x - 54x + 7
What is the answer?

Answers

Answer:

−27+7

Step-by-step explanation: First add 23x + 4x=27x

                                             Then subtract 54x gives you -27x

                                               You can't add a regular number with x's so your                                final answer is -27x+7

Answer:

−27x+7

Step-by-step explanation:

(Graphing inequality) where do I go! Left or right!!

Answers

Answer:

It depends what the problem requests

When the slope is positive

Answer the question below

Answers

Answer:

I think its 5 & 7 maybe ?

Key Concepts

• The constant of proportionality is the _______ value of the ratio between two proportional quantities.

• To find the constant of proportionality on a graph, find the y-value when the x-value is
________ .

• You can use ______ reasoning to find the constant of proportionality when the x-value of 1 is not labeled on a graph.

• A proportional relationship is sometimes described by words. Setting up a table to find the _______ of proportionality can be useful.

Answers

Answer:

equal, right, answer

Step-by-step explanation:

in real life how is slope-intercept form used

Answers

Real-life applications of slope inculde roofs, roads, handicap ramps, funiculars, cable cars, mountains for skiing, downhill cycling, and snowboarding/dirtboarding, roller coasters, skate ramps, and BMX jumps.

What that guy said^^ sorry I need some points :(

finely's pumpkin had a mass of 6.5 kilograms (kg) before he carved it after carving it the pumpkin has a mass of 3.9 kg what was the percent decrease of the pumpkin

Answers

Answer:

There was a 40% decrease in mass of the pumpkin.

Step-by-step explanation:

Answer:

The percent decrease was 40%

The percent change was -40%

Step-by-step explanation:

The decrease in mass was (6.5 - 3.9) kg, or 2.6 kg.

The percentage decrease was therefore

 2.6 kg

------------ * 100%, or 40%

6.5 kg

help me i will give you 18 points of you answer this one

Answers

Answer:

(4,1)

Step-by-step explanation:

y=4

x=1

this is not my cup of tea but I'm pretty sure this is the answer

Answer:

4

Step-by-step explanation:

Do this the same way as the last time you had this type of problem.

The indicated point is (1, 4)

constant of proportionality

y/k = 4/1

y/x = 4

easy 10 points answer all 5 questions.

Answers

Answer for 1 is 22 degrees
1. 14
2. -5,-2,0,2,4
3. can’t help
4. -5.7, -2.4, 2, 3, 4.9
5. 5, 6, 2, 9

Sue earns $1,200 per week as a computer operator. Her husband Jim earns $2,000 per week working as a teacher. What are Sue’s monthly earnings?

Answers

Answer:

4800

Step-by-step explanation:

Her monthly earnings are $4,800

[tex]1200 \times 4 = 4800[/tex]

Since she earns $1,200 per week, and there are 4 weeks in a month, you multiply both of the numbers and get the answer.

Hope that helped:)

Helppppppp plsssssssss meeeeeee so harddddddd

Answers

Answer:

incorrect

Step-by-step explanation:

this is because it would be 1/2 and 1/6. you would have to multiply the bases for a probability of 1/12

Hope it helps you!!!

Answer

Yes

Step-by-step explanation:

In algebra, if there is an unknown value that needs to be represented, typically you have to use x,y,z,a,b,c. etc.

I hope this helped

I don't understand why m

Answers

please explain what question you are talking about since there is 6 questions on the paper.

Answer:

M

Step-by-step explanation:

When is says m< It is really said “m” angle___ it has nothing to do with math really

Gena wants to estimate the quotient of –21.87 divided by 4.79. Which expression shows the estimate using front-end estimation?
-21 ÷ 4
-21 ÷ 5
-20 ÷ 4
-20 ÷ 5

Answers

-21/5 is the closest!!!

Hope this helps.

If you want me to explain why, just ask! :)
He is actually right ! It’s -21/5

8,869 divided by 3= and can yall help me with other question im gonna post

Answers

Answer:

2956.33333333

................................

Answer:

2956.33333333

Step-by-step explanation:

BRAINLIEST?

Which planet has the third coldest temperature? *

A. Jupiter
B. Saturn
C. Uranus
D. Earth

Answers

According to this is should be Saturn

Answer:

I believe it's Uranus but I'm not an astronomer so I'm not completely sure about my answer.

Step-by-step explanation:

Someone please help. I will give brainliest.

Answers

2. -56

1. 35x

3. 60mph

5. 10.33

4. 13.05$

6.5

7. 34

8.14.09

9.1200

10.53

12. 67.0

13. 6.21

14. 32

Hope it helps you!!! :D

Answer:

Step-by-step explanation:

can someone pls help me with this i cqnt do it right and ive been trying for 1 hour and 35 min HELPPP MEEEE!!

Answers

The answer is 19 and the remainder is 1

Answer: 19.25

Step-by-step explanation:

the answer is in the attachment

please help I will give you brainliest please its due tomorrow and I'm stressing so much

Answers

Answer:

(-21)+1/2

Step-by-step explanation:

Just guess tbh

Which comparisons are true? Select all that apply.

A.
7
.
34
>
7
.
304
B.
1
.
628
>
1
.
63
C.
4
.
05
<
4
.
055
D.
9
.
103
<
9
.
13
E.
2
.
29
<
2
.
129

Answers

Answer: I get c, but double check on your end

Step-by-step explanation:

Why is it so unorganized

Click to see the picture! NO LINKS

Answers

Want to make Mac and cheese

Boil the pasta, drain.
Make the cheese sauce by combining a fat (butter), and starch (flour), then whisking in the milk products.
Cook the sauce until it’s nice and thick.
Add in shredded cheeses, stir well.
Combine cheese sauce with cooked pasta.
Transfer half of the mac and cheese to a baking dish, sprinkle with more shredded cheese.
Top with the rest of the mac and cheese, top with more shredded cheese.
Bake and prepare to thoroughly enjoy

The table shows the attendance at the art show for the past week.

What does the attendance need to be on Saturday to have an average attendance for the week of 30 people per day?

Answers

Answer: The correct answer is - 50.

Step-by-step explanation: :)

Answer:

50

Step-by-step explanation:

To calculate the mean, we do the total divided by the number of values. Therefore, to get 30, with 7 values, we need to have a total of 210. Currently, we have a total of 160, so Saturday needs to be 50, because 210-160=50.

I just need the ratio and the explanation, Lin, Diego, and Elena are competing to see who can finish their book the fastest.

Lin read the first 54 pages from a 270-page book in the first 3 days.

Diego read the first 100 pages from a 320-page book in the first 4 days.

Elena read the first 160 pages from a 480-page book in the first 5 days.

If they continue to read every day at these rates, who will finish first, second, and third? Explain or show your reasoning:

Answers

Answer: The answer to your question is:

1st Diego

2nd Diego and Elena ( both 15 days)

Step-by-step explanation:

Data

Lin          54 pages               270-page book                   3 days

Diego   100 pages               320 page                             4 days

Elena   160 pages                480 page                             5 days

Process

Lin

                         54 pages      -------------------   3 days

                       270 page        -----------------      x

                         x = (270 x 3) / 54

                         x = 15 days

Diego

                       100 pages        -----------------   4 days

                       320                  --------------------   x

                       x = (320 x 4) / 100

                       x = 12.8 days

Elena    

                       160 pages -------------------   5 days

                      480 pages --------------------   x

                      x = (480 x 5) / 160

                      x = 15 days

Other Questions
can you pls click this it will make you happy i promise i just gave you 100 points your welcome!!! Which part of the cell controls many functions of the cell and stores DNA? A) The nucleolus B) Chromosomes C) Lysosomes D) Chromatin there are 25 questions in a quizevery correct answer scores 3 pointseach incorrect answer loses 2 pointsa question not answered scores o points.it is possible to finish the quiz with a negative scorewhat is the minimum score you can get on the quiz Please help I cant do this A provision in the bond indenture that forces the corporation to make arrangements for bond repayment before the maturity date is called a(n) ____________ fund. Solve T in the following formula P=nRT/V Who here lives in POLAND!!!!! ()() .tag is used to draw a horizontal line He has a new 0.85-ounce tube of toothpaste thats supposed to last him the whole trip. The amount of toothpaste Ken squeezes out of the tube each time he brushes varies according to a Normal distribution with mean 0.13 ounces and standard deviation 0.02 ounces. what fraction is not equivalent to 2/6? 1/3, 12/36, 4/12, 6/9 This is the most popular Chinese opera style sad and shrieks operaDramatic operaBeijing (Peking) operaMoscow opera urgent help now plz i will give brainlest Hello please help me with this question What are six nutrients your body needs? Solve for k.k + 4.9 = 12.28 A females eggs are located in the : aCapillaries bUterus cTestes dOvaries What is the total volume of both storage spaces if one side of the large storage space is 4 feet long? U-shaped mountain valleys that may contain rocks that have been polished or appear to havenear parallel scratches on the surface are most likely formed by: Question 1(Multiple Choice Worth 50 points)(01.06 LC)Which technology removes carbon dioxide from the air by binding to it?Answers-O PyrolizationO Direct-air capture() Engineered moleculesO Carbon ground injection WILL MARK BRAINLYIST!! (if mostly/ all correct)1. According to the article "Drilling down into petroleum's impact on life on Earth", Peak oil is measured in RPRs (reserve-to-production ratios), which is recorded in years.Question: Why does Iran have a higher RPR (80 years) than the United States (9 years)?A. The United States consumes more oil than Iran.B. Iran consumes more oil than the United States.C. Iran produces more oil than the United States.D. The United States produces more oil than Iran.2. According to the article "Drilling down into petroleum's impact on life on Earth", carbon is a natural element that regulates Earth's temperature and makes the planet livable.Question: Which event has led to major shifts in the carbon cycle becoming?A. Peak oil has been reached this past decade.B. Humans learned how to extract and burn fuel.C. The API established units of measurement for oil.D. Ancient algae and plankton were buried and crushed.3.According to the article "Ask an Amazon Expert: Why we can't afford to lose the rain forest", how have humans impacted the Amazon rain forest in the last 50 years?1. 20% of the rain forest is gone (Correct)2. There are more roads and people there (correct)3. Over half of the rain forest is protected (correct)4. Extinct species have been reintroduced (NOT correct)A. 1, 3 and 4B. 1, 2 and 3 "correct answer" (ITS THIS ONE. B OR 1,2 and 3!!!)C. 2, 3 and 4D. 1. 2 and 44. According to the article "Ask an Amazon Expert: Why we can't afford to lose the rain forest", how is the Amazon rain forest connected to climate change?A. Trees of the Amazon remove carbon dioxide from the air.B. People of the Amazon produce most of the carbon dioxide that causes climate change.C.Soil in the Amazon absorbs carbon dioxide.D. Water in the Amazon River produces carbon dioxide, adding to climate change.5. Which selection from the article "Scientists study Persian Gulf reefs for coral survival clues" identifies the biggest threat to coral reefs?A. Warming waters spark bleaching events. Along with the bleaching, the ocean is becoming more acidic.B. The researchers demonstrated that this new organism was the most commonly found algae throughout the gulf's coral reefs. They say it probably adapted as a result of the gulf's harsh conditions.