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

IM SO SORRY PLEASE HELP ME!!!

Answers

Answer:B,D i think that's it

Step-by-step explanation: lmk if it was right or wrong

D for sure, and maybe E

There are two types of tickets sold at the Canadian Formula One Grand Prix race. The price of 5 grandstand tickets and 3 general admission tickets is 2490. The price of 6 grandstand tickets and 6 general admission tickets is 3540 . What is the price of each type of ticket?

Answers

General admission tickets are $287.50 each and grandstand tickets are $311.25 each

Answer: Grandstand: 360, General Admission: 230

Step-by-step explanation:

Use any variable you like but:

Let g represent grandstand ticketsLet a represent general admission tickets

You know:

5 Grandstand tickets and 3 general admission tickets is 2490:

5g + 3a = 2490

The price of 6 grandstand (g) tickets and 6 general admission tickets (a) is 3540

6g + 6a = 3540

You want to find out: What is the price of each ticket. To do this either use substitution or elimination.

I will demonstrate elimination:

To do elimination, you want to cancel out one variable. This means you want to multiply each side of the equation by a number. I see  3a and 6a. This means multiply by -2. Again, you want to eliminate the variable.

5g +3a = 2490 → -10g - 6a = -4980

Now, add the two equations together: Notice how you can line them up vertically to see how they can add together.

-10g - 6a = -4980+6g + 6a = 3540After that step you get: -4g = -1440

Now you can solve for the g (grandstand tickets):

-4g = -1440g = 360

You now know grand stand tickets cost 360. Take one of your original equations and solve for a (general admission tickets). To double check your work, they should satisfy both equations.

5g + 3a = 24905(360) + 3a = 24903a = 690a = 2306g +6a = 35406(360) +6a = 35406a = 1380a = 230

Therefore general admission tickets cost 230, and grandstand tickets cost 360!

PLEASE HELP!
What is the length of the shortest altitude in a triangle, if the lengths of the sides are 15 cm, 17 cm, 8 cm. Write answer in a common fraction in reduced form.

Answers

7.06 is the answer!!!!!
7.06 should be the answer

A person standing on a moving walkway travels 75 feet in 25 seconds. What equation represents this relationship? How many feet will the person travel in 10 seconds?

Answers

I found someone with the same question as you, good luck !
the person is travel 3 feet per second. and they will travel 30 feet in 10 seconds.

PLZ HELPPPP!!! WILL GIVE BRAINLIEST! TYSM!!

Find the arc length of the semicircle.
Either enter an exact answer in terms of π (pi) or use 3.14 and enter your answer as a decimal.

Answers

Answer:

6 pi

Step-by-step explanation:

The arc length is 1/2 of the circumference

C = pi * d

So the arc length is 1/2 C

arc length= 1/2 ( pi *d)

                = 1/2 pi(12)

                = 6 pi

6pi
shshdhnddbdndbdbdb

Yes now just solve this for brainliest unless your a copy ;)

Answers

Answer:

-30 - 6 = -36

-36/-4 = 9 So it wouldnt work

0 - 6 = -6

-6/-4 = 1.5 It won't work

-48 - 6 = -54

-54/-4 13.5 Wouldn't work

-18 - 6 = -24

-24/-4 = 6

Looks like -18 is the answer

-18 Is the answer :D

Answer:

-18

Step-by-step explanation:

Just try all of them. I started bottom up.

-18 - 6 / -4 = -24 / -4 = 6

YOU BEST MARK ME THE BRAINLIEST. I got them brains.

Please help these are the last ones I need I will mark you as brainliest if you answer them correctly! Ty

Answers

‏Which of the following statements is generally true about change in the workplace ? a ) Most people accept change easily . b ) Smart companies can avoid change altogether . c ) Change in the workplace happens fairly infrequently d ) Individuals can learn to manage the change in their lives .

Mind uh... Answering my question?

Answers

Answer:

12 ounces

Step-by-step explanation:

[tex]3 \div 4 \\ = 0.75 [/tex]

1 pound = 16 ouncesmultiply the mass value by 16.

[tex]0.75 \times 16 \\ = 12[/tex]

Hope it is helpful....

Answer:

12 ounces

Step-by-step explanation:

In triangle JKL, angle JKL is a right angle, KM and is an altitude. JL=8 and JM=2, find JK

Answers

Answer:

4

Step-by-step explanation:

I could be wrong, but I think it's 4. as JL divided by JM equals 4. Like I said, I could be wrong, but it's worth a shot.

Answer:

4?

Step-by-step explanation:

A coordinate grid with 4 lines. Line A passes through (0, 5) and (4, 3.75). Line B passes through (3.75, 0) and (0, negative 5). Line C passes through (0, negative 5) and (negative 3.75, 0). Line D passes through (negative 3.75, 0) and (0, 5).
Which line represents the linear equation
–3y = 15 – 4x?

The equation –3y = 15 – 4x rewritten in slope-intercept form is

Answers

Answer:

C

Step-by-step explanation:

im pretty sure

Answer:

9

Step-by-step explanation:

Perry saved 4 twenty-dollar bills, 2 ten-dollar bills, 3 dimes, and 2 pennies. Before winter break, he bought a new racing video game for $49.86. How much money did Perry have left?

Answers

Answer:

[see answer below]

Step-by-step explanation:

"Perry saved 4 twenty-dollar bills, 2 ten-dollar bills, 3 dimes, and 2 pennies."

4 * 20 = 80

2 * 10 = 20

3 * 0.1 = 0.3

2 * 0.01 = 0.02

80 + 20 + 0.3 + 0.02 = $100.32

100.32 - 49.86 = 50.46

Hope this helps you.

Answer:

$50.46

Step-by-step explanation:

6^14 y^8/6^9 y^3 = ???

Answers

Answer:

Step-by-step explanation:

Es cero

Answer:

I think its 7776v^11

Step-by-step explanation:

This table shows some college costs. How much more is tuition than the cost of fees and room and board? (table pic attached)

Answers

Answer:

7x +72

Step-by-step explanation:

Tuition - (room and board)

8x+75 - ( x+3)

Distribute the minus sign

8x+75 - x-3

7x +72

8x+3 = (x) =12 because if 8x + 75 means that x alone will still be 8 the x + 3 +5 =16

HELP I ONLY HAVE 5 MINUTES LEFT

Answers

Answer:

i=13

Step-by-step explanation:

i = 13 because it does

Last month David, a sales representative, sold $5000 worth of medicines and received a commission of 30% on his sales. How much money did David earn as commission last month?
A.$3,000
B.$2,000
C.$1,500
D.$1,000

Answers

Answer:

C.

Step-by-step explanation:

30% of 5,000 is 1,500.

C is the answer cause 30% of 5000 is 1500

Please help me! I will give brainly!


A law in Washington, D.C., restricts a new building's height to no more than 20 feet taller than the width of the street it faces. You design a building with stories that are each 15 feet tall for a street that is 88 2/3 feet wide. What is the greatest number of stories your building can have?

_______ Stories

How much shorter is your building than the height restriction?

________Feet

Answers

It can be up to 20 feet taller so add 20

To the width:

88 2/3 + 20 = 108 2/3

Divide total height by the height of one story:

108 2/3 / 15 = 7.24

The building can have 7 stories.

b. 7 x 15 = 105 total feet

108 2/3 -105 = 3 2/3 feet below the restrictions

‏Which of the following statements is generally true about change in the workplace ? a ) Most people accept change easily . b ) Smart companies can avoid change altogether . c ) Change in the workplace happens fairly infrequently d ) Individuals can learn to manage the change in their lives .

I need the answer to 7 please

Answers

7. a

Given,

Diameter = 16 feet

So, radius = 16 feet/2 = 8 feet

Circumference = 2πr

So, circumference of this circle

= 2πr

= 2 × 3.14 × 8 feet

= 3.14 × 16 feet

= 50.24 feet

b.

Given,

Diameter = 16 feet

So, radius = 16 feet/2 = 8 feet

Area = πr²

So, area of this circle

= 3.14 × (8 feet)²

= 3.14 × 64 feet²

= 200.96 feet²

Answer:

Done

Step-by-step explanation:

Area - 201.06192983

Circumference - 50.2654824574

A rectangular photograph measuring 2 inches by 4 inches is enlarged by a scale factor of 8. What are the new dimensions of the photograph? Can ya explain how you got the answer too?

Answers

Answer:

original: 2x4

scale factor: 8

new dimensions:

2x8=16

4x8=32

(To get the new dimensions all you have to do is multiply the sides by the scale factor)

Step-by-step explanation:

The new dimensions of the photograph is [tex]64 \ in^{2}[/tex]

What is a scale factor?

The scale factor is a measure for similar figures, who look the same but have different scales or measures. Suppose, two circle looks similar but they could have varying radii. The scale factor states the scale by which a figure is bigger or smaller than the original figure.

According to the question

[tex]S_{1} =2\times4=8[/tex]

[tex]S_{2} =8S_{1} =8\times8=64[/tex]

The new dimensions of the photograph is [tex]64 \ in^{2}[/tex]

Find out more information about scale factor here

https://brainly.com/question/2839518

#SPJ2

What does this mean "Go from -2
What is this -2

Answers

Answer:Go from -2 means starting from -2 you should start or begin. -2 is an integer before 0. It also means negative 2.

if you right a timeline you will under stand it as -2 to 2 ( whole number ) the

Dave and Bill were shooting free throws. Dave MADE 7 out of 15 free throws. Bill MISSED 6 out of 10 free throws. Who made the greatest fraction of free throws?

Answers

Answer:

Bill

Step-by-step explanation:

Bill-6/10=0.6 Dave-7/15=0.46

Bill has a greater average. Hence, Bill has the greater fraction.

Bill had a greater average

Determine the length of AB¯¯¯¯¯¯¯¯. Write your answer in simplest form.

pls help i need the answer soon

Answers

Answer:

[tex]x = 2.4[/tex]

Step-by-step explanation:

Step 1:  Find the length of AB

[tex]\frac{ED}{EA} = \frac{EC}{EB}[/tex]

[tex]\frac{15}{12} = \frac{18}{12+x}[/tex]

Cross Multiply

[tex]15(12+x) = 12(18)[/tex]

Distribute

[tex](15*12)+(15*x) = 216[/tex]

[tex]180 + 15x = 216[/tex]

Divide

[tex]15x / 15 = 36 / 15[/tex]

[tex]x = 2.4[/tex]

Answer:  [tex]x = 2.4[/tex]

X=2.4 yeah because you know

Please whoever knows they can solve this, help!

I have attached the question down below. Please explain in detail and diagrams if the question permits you to do so. Thank you. I will also be marking the brainiest.

Answers

I can’t see the question I think you forgot to upload it
explanation:

Answer:Can't see the question

Step-by-step explanation:

Mrs. Singh made 372 cookies to put in gift boxes. She will put 20 cookies in each box. How many cookies will be left over?

Answers

Answer:

12

Step-by-step explanation:

372 : 20 = 18 (rest 12)

check

18 * 20 + 12 = 372

12 will be left over.
20 times 18 = 360
372-360 = 12

HURRY IM TIMED!! which inequality is represented by this graph?

Answers

Answer:

x<6 this is the answer because the circle is hallow (not including) and going left (less than)

Answer:

x<6

Step-by-step explanation:

Look at the way the blue arrow is pointing that means less than and the circle is open so it is not equal to the number 6.

1/3(3x-6)=2x please help

Answers

Answer:

-2

Step-by-step explanation:

In the picture

Answer:

x = -2

Step-by-step explanation:

1/3(3x - 6) = 2x

3x - 6 / 3 = 2x

9x - 6 = 6x

3x = -6

x = -2

What is the y-intercept, end behavior and zeros of this polynomial function?

g(x) = (x + 2)(x − 1)(x − 2).

Describe the direction of the parabola and determine the zeros and y-intercept.

f(x) = (x – 3)(x – 2).

WILL MARK BRAINLIEST IF BOTH ANSWERS ARE CORRECT

Answers

Answer:

To determine its end behavior, look at the leading term of the polynomial function. Because the power of the leading term is the highest, that term will grow significantly faster than the other terms as x gets very large or very small, so its behavior will dominate the graph.

Step-by-step explanation:

mark it as brainlist

Give me brainliest !!!!!

For the first one:
Y int- (0,4)
Find the zeros- x= -2, 1, 2


Second one:
Find the zeros- x= 3,2
Y int- (0,6)


(First pic is end behavior for g(x)=(x+2)(x-1)(x-2)….. second pic is direction of parabola for f(x)=(x-3)(x-2) hope this helped :)

What are the odds against getting three tails when you flip three coins?
A. 1:1
B. 1:7
C. 1:8
D. 7:1

Answers

Answer:

1:7

Step-by-step explanation:

The number of possible outcomes is 2*2*2 = 8

The number of ways of getting 3 tails is 1

The odds against - the ratio of the number of ways that an outcome cannot occur compared to in how many ways it can occur.

ways it can occur -1

ways it cannot occur - 8-1 = 7

1:7

Yeah, it’s 1:7 HAHAHAH

Math problem for high school

Answers

Answer:

50/3

Step-by-step explanation:

area of triangle = 10

area of circle = 10

area of triangle + area of circle = 20

The white sector of the circle has central angle 60°.

Its area is 1/6 the area of the circle.

To find the gray area, you must subtract the white area from the area of the circle and also subtract the white area from the area of the triangle. Two times the white area is 1/3 the area of the circle.

gray area = 20 - (1/3)10

gray area = 20 - 10/3

gray area = 60/3 - 10/3

gray area = 50/3

Answer:

The white sector of the circle = (1/6) (10) = 10/6 = 5/3

So....the grey area = 10 + 10 - 2 (5/3) = 20 - 10/3 = 60/3 - 10/3 = 50 / 3

MARK BRAINLIEST

Will Mark Brainliest If Correct Answers! Need Some Help Please

Given the expression: 4x10 − 64x2

Part A: Rewrite the expression by factoring out the greatest common factor. (4 points)

Part B: Factor the entire expression completely. Show the steps of your work. (6 points)

Answers

Answer:

Step-by-step explanation:

a) 4x¹⁰ = 2² * x¹⁰

   64x² = 2⁶ *x²

GCF = 2² * x² = 4x²

b) 4x¹⁰ - 64x² = 4x²*(x⁸ - 16)

                  =4x² *[ (x⁴)² - 4²]

                  = 4x² * (x⁴ + 4) (x⁴ - 4)

                  = 4x² * (x⁴ + 4)* [(x²)²- 2²]

                  =4x² * (x⁴ + 4) * (x² + 2)(x² - 2)

                 

There is a blueprint for a house that is a scale drawing for the entire house. One part of the house has a triangular base. The drawing of the width of the triangle is 4cm and the length is 6cm. If the width of the actual triangular structure is 18cm, what is the length and the area of the triangular structure?

Answers

Answer:https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-geometry/cc-7th-scale-drawings/v/scale-drawing-example-2

Step-by-step explanation:

this with help

Answer:

0

Step-by-step explanation:

99

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