Mathematics Middle School

when rounding to estimate this sum, what do you do first?
389+190=

A. Add the digits in the hundreds place
B. round the addition problems 400+200
C. round the addition problems 300+100

Answers

Answer 1

Answer:

B

Step-by-step explanation:

this is because it would be more accurate than a and b

a would end up as 400

b would end up as 600

c would end up as 400

the actual answer is 579

it is closest to B

Related Questions

May I please get help with my math lesson if possible I don't know why they are 4 answers if 1 of the answers don't apply to any of the questions it fine just leave it blank

Answers

Answer: S1:E7 ; S2:E1 ; S3:E5

Step-by-step explanation:

What we know:

3 answers applyWe need to find which answers go with each question

**A lot of info is problem-specific.

How to solve:

Since we only need to write the equations, we simply need to find the x and y variables, and the total.

Process:

Problem 1:

Find the x                                                                     5.50Find the y                                                                     3Find the total                                                                145Write equation                                                      5.50 + 3 = 145

Problem 2:

Find the x                                                                     2.50Find the y                                                                     0.75Find the total                                                                25Write equation                                                      2.50 + 0.75 = 25

Problem 3:

Find the x                                                                     2Find the y                                                                     5Find the total                                                                50Write equation                                                        2 + 5 = 50

Solution: S1:E7 ; S2:E1 ; S3:E5

Answer:

S1:E7  S2:E1  S3:E5 Have a great day...

Step-by-step explanation:

Determine whether each figure creates the conditions to form a unique triangle, more than one triangle, or no triangle. Angle measures of 30 degrees, 60 degrees, and 90 degrees.

no triangle
a unique triangle
more than one triangle

Answers

It’s 60 degrees because it’s on triangle
It’s 69 degrees because it’s on a triangle

If Gary bikes at an average speed of 6 miles per hour, how many hours will it take him to bike 84 miles?
A. 19 hours
B. 17 hours
C. 14 hours
D. 12 hours

Answers

the answer is c; 14 hours

do 84 divided by 6 and you will get 14

Step-by-step explanation:

No of hours =84 ÷ 6 = 14 hours

Option C is the correct answer

HELP PLEASE PLEASE I NEED HELP!!!

Which equation can be used to find 55 percent of 900?

StartFraction 55 times 1 Over 900 times 1 EndFraction = StartFraction 55 Over 900 EndFraction
StartFraction 100 times 16.36 Over 55 times 16.36 EndFraction = StartFraction 1636 Over 899.8 EndFraction
StartFraction 900 times 9 Over 100 times 9 EndFraction = StartFraction 8100 Over 900 EndFraction
StartFraction 55 times 9 Over 100 times 9 EndFraction = StartFraction 495 Over 900 EndFraction

Answers

Answer: StartFraction 55 times 1 Over 900 times 1

Step-by-step explanation:

Answer

its D, i know because i used a different person and they said a it was totally wrong

Step-by-step explanation:StartFraction 55 times 9 Over 100 times 9 EndFraction = StartFraction 495 Over 900 EndFraction

(

(  HOPE THIS HELPS
(

(PLEASE HELP) To feed 7 horses for 4 days, Mark needs 420 kg of grass. How many kilograms of grass does Mark need to feed 9 horses for 6 days?

Answers

Answer:

810kg is the answer

Step-by-step explanation:

Hope this helps:)

420 divided by 4 is 105 so each day 7 horses eat 105 kg of grass,
105 divided by 7 = 15 so each horse intakes 15 kg of grass per day

9x15=135
135x6 =810

The following table shows the number of visitors to Yellowstone National Park from 2000 to 2006.
What was the percent of change in the number of tourists between 2000 and 2001?

Answers

Answer:

79,707

Step-by-step explanation:

2,838,233 - 2,758,526= 79,707

2,838,233
-2,758,526
——————
79,707

What is the distance between the points? Round to the nearest tenth if necessary.

Answers

Answer:

Im pretty sure its 11.6

Step-by-step explanation:

The answer is 1.7 rounded to the nearest tenth

Label the equations in number 5-7 as True or False:
(7^1)^9= 7^5 x 7^5

y^13/(y^2)^6=y^-10x y^9

b^4xb^-6=b^1xb^3/b^6

Answers

Answer:

[tex]{ \rm{ {(7}^{1}) ^{9 } = 7 {}^{5} \times {7}^{5} : \: { \tt{ \red{false}}} }} \\{ \boxed{ \mathfrak{correction \dashrightarrow \: ( {7}^{1}) {}^{9} = {7}^{9} }}} \\ \\ { \rm{ \frac{ {y}^{13} }{ {( {y}^{2}) }^{6} } = {y}^{ - 10} \times {y}^{9} : \:{ \tt { \red{false}}}}} \\ { \boxed{ \mathfrak{correction \: \dashrightarrow \: { \rm{{y}^{1} }}}}} \\ \\ { \rm{ {b}^{4} \times {b}^{ - 6} = \frac{ {b}^{1} \times {b}^{3} }{ {b}^{6} } }} \: : \: { \tt{ \green{true}}}[/tex]

Pls help me with this math.

Answers

Michael made the first error when he did not do +10 on both sides in step 2 (he did not change the sign of -10 to +10 on the right side).
Micheal made the first error you can make sure by doing 186261 divided by 3

10x > 14x + 8 (find the value of x)

Answers

Answer: The answer will be created shortly.

Here is the right answer

X < -2

Someone help me with this please, I really need help, and it's due tmrw...PLEASE

Answers

Answer:

The answer is c.

Step-by-step explanation:

Rate of change means slope, in C, the slope is 6. Whenever you see an equation like that and a number with x after it, that's the slope, or rate of change. On the graph, the rate of change is -3, on answer choice C, the slope is -6.

The answer would be c

plz help for 100 points what I need help with is in the pictures

Answers

I can’t see the picture

someone answer this pls for me

Answers

Answer:

1=  1

2= 2/5

3= 1/2

4=1 and 1/3

1/2 1/4 2/3 1/5 yea i need pointss jssjsjs

A Karen's car is shown below.Which is closest to the distance traveled, in feet, after 3 full rotations of the tire? use pi = 22/7.

Answers

Answer: This is approximately 3.14

Awnser this is aprox 3.14

Explain solving how 4x<-16 is different from -4x<16

Thank y'all

Answers

Answer:

-4x<16 the sign flips if you divide by a negative

Step-by-step explanation:

4x<-16

x<-4

but

-4x<16

x>-4  

Some are switched to negatives

Compare.

A. <
B. >
C. =
D. cannot be solved

Answers

well, change 15/4 into a decimal, 3.75. And now, we can see which is greater. Considering the wholes, 2 and 3,   3 is greater than 2, so it would be 2.2 < 15/4.

So, basically A I think.

It’s A. <
No 15 over 4 is more than 2.2!
Hope this helps

What is the volume of this solid?
Most Precise Answer = Round to the nearest hundredth
Approximate Answer = Round to the nearest tenth if necessary

Answers

Answer:

4188.79

Step-by-step explanation:

Find the volume with the formula, V = (4/3)πr³.

Natalia is moving into a new house. All together, her furniture weighs 2,896 pounds. If it takes 2 trucks to carry all of Natalia's furniture, what is the average weight load on each truck?

Answers

Answer:

1448 Pounds per truck

Step-by-step explanation:

Divide 2896 by 2

If you haven't learned long division yet, try breaking up the number and dividing it by 2 like this:

2000/2=1000

800/2=400

90/2=45

6/2=3

Then, add them up and solve from there: 1000+400+45+3=1400+48=1448

Answer:

1448

Step-by-step explanation:

2,896/2 = 1448

Hope this helps!

What is the solution to this equation?

−6(x+7)=−30

Enter your answer in the box.

Answers

Answer:

x = -2

Step-by-step explanation:

-6(x + 7) = -30

distribute the -6

-6 * x = -6x and -6 * 7 = -42

-6x - 42 = -30

add 42 to both sides

-6x = 12

divide both sides by -6

-6x/-6 = x and 12/-6 = -2

we're left with x = -2

Antony buys one pound of oranges for $12 and sells it for $14. How can he write the profit in his account book?
A.
+$2
B.
+$14
C.
$14
D.
-$2
E.
-$12

Answers

Answer:

A

Step-by-step explanation:

it is because the profit =SP-CP

=14-12 =2

Answer : A
Step by step 12+2 =14

help me and i will mark you the brainlyist

Answers

1a. n ≤ 21
1b. n ≥ 5
1c. n > 3/5

2d. n < 14
2e. n ≥ 14
The answer is what the guy above said

Make a table of equivalent ratios based on the graph below

Answers

answer:

8,8
30,6
60,12
90,18
130,24

explanation:

hoped this helped:)

Please help me with this question

Answers

Answer:

8 = 2^3, 52 = 2^2 * 13

Step-by-step explanation:

8 = 2 * 2 * 2 = 2^3

52 = 2 * 2 * 13= 2^2 * 13

What the person above me said is correct

5(20 + ) = 100 + 95 im tryna watch anime but i gotta do another test

Answers

I think it would be 195 or it might be 195 or it might be 195 or it might be 195

Answer:

100=195

Step-by-step explanation:

Im sorry it sort of makes no sense since because of the +.

How you write a inequality and then graph the answer?

Answers

Answer:

To write an inequality, you need to write a number on the number line, and to graph it, you need to write another inequality and figure out what the answer is.

hope this helped.

Which statement is modeled by the expression?

100p


A. After the league had supplied each player with a uniform, there were 100 uniforms left over. If there are p players in the league, 100p is the number of uniforms the league had originally.

B. The coach received 100 tokens for the amusement park rides. If there are p players on the team, each player will receive 100p tokens.

C. Each player in the league was given 100 tickets to sell. If there are p players in the league, the total number of tickets to sell is 100p

D. One hundred more players signed up for soccer than the league had planned for. The league had p uniforms in stock. The number of uniforms the league needs to buy to make up the difference is 100p.

Answers

Answer: C

Step-by-step explanation:

There are 100 tickets given to each player (player being used as the variable “p”

Each player will sell 100 tickets each, resulting in “100p”

I think the Results are 100p.

Mrs. Parker has a small garden in her backyard. The total area of her garden is 3.5 square meters. The length is 5 meters.


What is the width of Mrs. Parker’s garden?
A.
0.7 meters
B.
70 meters
C.
0.07 meters
D.
7 meters

Answers

Answer:

B. 0.7

Step-by-step explanation:

3.5/5=0.7

A! If you work backwards, 5*0.7=3.5 or 3.5/5=0.7

WILL GIVE BRAINLIEST LIKE FIVE HEARTS THE WHOLE SHEBANG

The graph shows how many bottles a machine caps in a certain number of seconds.


Part A

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

Use the drop-down menus to show and explain your answer.

The constant of proportionality is

Choose...

; the machine caps

Choose...

bottles in

Choose...

.

Answers

I’m assuming that this is about how much the machine can cap so I would say bottles in.

Jake has a shipping box with the following dimensions.

length: 12 inches
width: 4 inches
height: 8 inches

Havana has a shipping box similar to Jake's box, but each dimension is half as long.

How many times greater is the volume of Jake's box than Havana's box?

Enter your answer as a number, like this: 42
HELP PLEASEEEEEE

Answers

The volume of Jake's box is 384 cubic inches, the volume of Havana's box is 48 cubic inches. That means your answer is around 87 because 48 goes into 348 about 87 times.

Answer:

Step-by-step explanation:

12 x 4 x 8 = 384

6x4x8=192

384-192=192

Can you please help me?

Answers

The correct answer should be 192.
3(8)^2=3x64
Other Questions
PLEASE ITS DUE 5 MINS Because of the good soilcomposition found in this biome, themajority of the farmlands in theUnited States are found inA. desertsB. temperate forestsC. grasslands What is the value of x in the solution to this system of equations? y+5x=-1 y=1/2x+32A. -198/29B. 29C. -6D. 37/33 Algebra 2 How many Real solutions does the equation have? X-1 squared = x-4 41. What was the name for large farms that were operated like factories?a. Bonanza farmsb. Dugoutsc. Sod housesd. Factory farms HELP find the a,b,c of this table 2+2 (I have been struggling on this for a long time) Define diabetic insipidus Taking detailed notes will help youO verify information.O quote accurately.O write your story more easily.O all of the above. Why will nobody answer my questions..Which graph represents the solution to this inequality? -1/4(12x+8) Someone find the answer *10 points* write 0.000046 in scientific notation At a basketball game, a vender sold a combined total of 161 sodas and hot dogs. The number of sodas sold was 31 more than the number of hot dogs sold. Findthe number of sodas sold and the number of hot dogs sold. can someone please help with this??? to become known as an important patron, one most needed to be PLEAAAAASSEEEEEEEEEEE im held captive._. Can you fill in the following sentence with the appropriate verbal form?Mi padre _____ por la maana.AlmuerzaEncuentraRecuerda Can anyone help me please? The LCM of 6, 17 and 34 is Aside from Guyana, most people in the tropical north live in-Urban Areas-Rural Areas