Mathematics Middle School

what is 1/7 plus 3/21 equal

Answers

Answer 1

Answer: 1/7 + 3/21 = 6/21

Step-by-step explanation:

1. Convert 1/7 to have a denominator of 21. 7 * 3 = 21

2. Multiply the numerator with the same number. 1 * 3 = 3

3. Add the new fraction straight across the top, leaving the bottom the same.

1/7 + 3/21 = 6/21

Answer 2

Answer:

[tex] \frac{2}{7} [/tex]

Step-by-step explanation:

Cancel out the second fraction because 7 is a multiple of 21.

1/7 + 1/7

Write the duplicate numerstors above the denominator

1+1/7

Add

1+1/7 = 2/7

Related Questions

solve this equation
1/4a+3=31

Answers

solution of 1/4a+3=31 is a=112

[tex]\frac{1}{4}[/tex]a+3=31

Transposing 3 to RHS we get

[tex]\frac{1}{4}[/tex]a=31-3

[tex]\frac{1}{4}[/tex]a=28

dividing1/4 with 28

a=28 x4/1

we did this because in fraction division we multiply its inverse by the dividend.

∴a=112.

To know more about fraction division:

https://brainly.com/question/1622425

A: 112
1/4a + 3 = 31
112 (divided by 4, 1/4) = 28
28 + 3 = 31
31 = 31

You can rent a car via two options. Option A charges $20 per day plus $0.10 per mile. Option B charges $0 per day, but $0.50 per mile. How many miles must you drive in one day for option A to be cheaper?

Answers

A minimum of 51 miles must be driven in one day for option A to be cheaper than b.

under option (A) a fixed charge of $20 is to be paid plus $0.10 per mile.

whereas under option (B) only variable charges are to be paid at $.50 per mile.

how many miles should one drive so that cost under both situations is equal?

let's assume miles driven in a day is x

$20+ $0.1 x = $0.5 x

x = 50

if 50 miles are driven in a day cost under both situations is equal and more than that cost under option A will be less, therefore, the miles to be driven in a day should be greater than equal to 51 miles

Answers

Multiply the width by the length by the heigh, the answer is 125

The answer for your question will be 125 height

Which graph shows the solution to the system of linear equations?

y = 4x − 1
16x − 4y = 16

Answers

The graph that the lines make an x type shape at the top.

does anyone mind helping me on this question? (the question is shown on the picture).

Answers

Answer:

4 inches

Step-by-step explanation:

The diameter of the top of the trash can is 12 inches, so 1/3 of that is 12 / 3 = <<12/3=4>>4 inches. This is the diameter of Isaiah's "trashball" that he should aim for.

Answer: 2. I think it’s correct.

Select the equivalent expression.
(
4
3
y
)
3
=
?
(
y
4
3

)
3
=?left parenthesis, start fraction, 4, cubed, divided by, y, end fraction, right parenthesis, cubed, equals, question mark
Choose 1 answer:
Choose 1 answer:

(Choice A)
A
4
9
y
y
4
9

start fraction, 4, start superscript, 9, end superscript, divided by, y, end fraction

(Choice B)
B
4
9
y
3
y
3

4
9

start fraction, 4, start superscript, 9, end superscript, divided by, y, cubed, end fraction

(Choice C)
C
4
6
y
4
y
4

4
6

start fraction, 4, start superscript, 6, end superscript, divided by, y, start superscript, 4, end superscript, end fraction

(Choice D)
D
4
6
y
3
y
3

4
6

start fraction, 4, start superscript, 6, end superscript, divided by, y, cubed, end fraction

Answers

i think its D but i am not 100%

D I think am not sure

using the common multiple from part a,how would the models be different? How would they be the same?

Answers

Answer:

They are all different numbers which makes them different from each other. They are also the same because they are all common multiples of 4 and 6.

All the numbers are different numbers which makes them different from each other. They are also the same because they are all common multiples of 4 and 6.

What is Least common multiple?

The Least common multiple of two or more numbers are the smallest number that is multiple of two or more numbers.

Given that;

The common multiples of 4 and 6 are,

⇒ 12, 24, 36, 48, ..

Clearly, All the numbers are different numbers which makes them different from each other. They are also the same because they are all common multiples of 4 and 6.

Learn more about the Least common multiple visit:

brainly.com/question/10749076

#SPJ2

Tyler has 3 times as many books than May. If Tyler has 18 books how many does May have?

Answers

The answer is 6 because 3x6 = 18

Answer:

Step-by-step explanation:

18 ÷ 3 = 6

18 ÷ 6 = 3

6 × 3 = 18

3 × 6 = 18

Hope this helped! HAVE A GOOD DAY!

please help me, the question is on the photo.

Answers

Answer:

Step-by-step explanation:

C. 24 3/4

I'm pretty sure it's C. 24 3/4.

23+(56-34)×16 question just for fun

Answers

Answer:

23+(56-34)x16= 375

Step-by-step explanation:

56-34= 22

22x16= 352

352+23= 375

375

23+22•16
23+352=375

Coffee: To make a cup of coffee at home, it will cost on average $0.10 while to purchase a cup of coffee from a shop, it will cost around $3.00. Calculate the percent of this markup. Round to the nearest percent.

Answers

Answer:300

Step-by-step explanation:

multiply decimal by 100 and see what the value is of the number in the tenths place

Answer:

300

Step-by-step explanation:

pls someone help me I am literally so confused.

Answers

The heart = 10 and the blue shape = 6

Explanation

First take 16 and we know that one purple tear drop is 3

So 3x2 = 6 - 16= 10 so we now know that the blue triangle must be 6 because 6+10 = 16

Green: 10 (looking at the purple's answer, which is 3.) 16-3-3= 10
Blue: 16
It is shown that they both 'weight' or are the same amount. So, it should be 16. The sun of 10(green) + 6 (the 2 purple)

2(purple) + (green) = blue
2*3 + 10 = 16
6 + 10 = 16
16 = 16

Write the number 2.024 × 10-3 in standard form.

Answers

Answer: eight and ninety-six thousandths.

Step-by-step explanation:

2.024x10-3

10-3=4

2.024x4=8.096

Answer:

Two point zero two four, times ten minus three

Would be equal to 17.24 or seventeen point twenty-four

Step-by-step explanation:

I hope this helps and have a wonderful day!

Lorie ordered a shed to hold her gardening supplies. the shed had a length of 14.25 ft, a width of 13 ft, and a height of 4 1/5 ft. ( pls explain how you got the answer ) - deterrmine the volume ,v, usinng the formula v= lwh.-

a) 778.05 ft power of 3

b) 728.05 ft power of 3

c) 59.85 ft power of 3

d) 31.45 ft power of 3

Answers

Answer: a

Step-by-step explanation: Multiply length, width, and height for volume all together to get the answer a.

14.25 x 13 x 4.20 = 778.05

To make sure you did it right, multiply the equations another way.

13 x 4.20 x 14.25 = 778.05

14.25 x 13 x 4.20 = 778.05

kenna is painting a mural outside her art studio. Part of her mural involves a circle with a radius of 4 feet. She has already painted 2/3 of the circle. What is the approximate area of the portion of the circle that still needs to be painted? Use 3.14 as the approximation for [pi]

A-33.5 SQ FT

B-25.12 SQ FT

C-16.75 SQ FT

D-12.56 SQ FT

PLEASE ADD EXPLANATION--OR DONT, ITS FINE

Answers

it’s answer A-33.5 SQFT

A ,because i said so and yeah

The area of this trapezoid is ___

Answers

Answer:

Step-by-step explanation:

Area = LxWxH

So 12x13x2 is

312

hope this helps

Answer:

182

Step-by-step explanation:

A = (a + b)/2 x h

a = top = 12

b = bottom = 12 + 2 + 2 = 16

h = 13

A = (12+16)/2 x 13 = 182

The ferris wheel at the county fair measures 65 feet in diameter. How many complete revolutions will the ferris wheel make if Jack rides for 450 yards? Round to the nearest whole revolution.

Answers

Answer:

To solve this problem, you will need to find the circumference of the ferris wheel. You can do this by multiplying the diameter of the ferris wheel by π. The circumference of the ferris wheel will be approximately 205 feet. Next, you need to convert 450 yards to feet. There are 3 feet in a yard, so 450 yards is equal to 4503=<<4503=1350>>1350 feet. Now that you have the distance that Jack travels in feet, you can divide it by the circumference of the ferris wheel to find the number of complete revolutions he makes. This is equal to 1350/205=6.59, which means that Jack makes approximately 7 complete revolutions on the ferris wheel.

Help! Explain and give Correct answer

Answers

The answer is a because when you’re dealing with positive Powers you do the one on the left first and when you do the one on the left you divide the second number by two and the second number 8 so now it is four. The one on the right you double the second number by two and the second number was four so now it is eight and when the number outside of the parentheses is negative you don’t do anything with it so that is why your answer is a. (And also five and four you keep the same because when even one of them has a negative in them you keep the two main numbers the same which are five and four.)

Answers

Answer:

choice D

Step-by-step explanation:

The answer is C cccccccccccccc

(PLEASE ANSWER THIS I NEED IT DONE IK ITS HARD) Jake’s class sold chocolate bars to raise money for the school. He entered the number of chocolate bars sold in column A of his spreadsheet. He entered the function rule into the computer to calculate the entries in column B and C.

What is the function rule that Jake used to get the results from Column A to C?

Answers

Answer:

i think a to c is dividing by 4.5

sorry if I'm wrong

Answer: A to C are dividing by 4.5

help pleaseeeeeeeeeeeee fastttt

Answers

Answer:times by 2

Step-by-step explanation:

The answer would be two because it is doubled.

HELP
Solve: y + 0 = −1

Answers

Answer:

y=-1

Step-by-step explanation:

Y=-1 because in order to get to -1 from 0 you need negative one remember y is just your missing number

Anyone able to help with this? Please right answer only

Answers

Answer: 1

Step-by-step explanation: The scale factor is 2. Since they are similar, BD * 2 = 4. GL/2 = AB

1 unit

triangle GLP is twice as large as triangle ABD. BD is equivalent to LP and LP is 4 units long while BD is half of that. If that’s the case then it’s the same for GL and AB

Which expression resulted from using the Distributive Property to generate an expression equivalent to 4( 1/4a + b – 6)?
a. a + b – 24
b. 4a – 6b
c. 4a + b – 6
d. a + 4b – 24

Answers

Answer:

Step-by-step explanation:

kzjzjjs

Answer: D

because you are just multiplying everything by 4 so 1/4 would be 1 but since it has a variable it would be a (for it to be simplified) then you would multiply 4 by b which would result in 4b then you would multiply -6 by 4 (it would be negative because the “-“ sticks with the 6)

The distance from Marni's house to her aunt's house is 3,000 miles. If Marni wants to make the trip to her aunt's house in 6 days, how many miles will she have to travel each day? Use mental math to find the answer.

Answers

Answer:

[tex]\huge\boxed{\sf 500\ miles}[/tex]

Step-by-step explanation:

Distance from Marni's house to her aunt's house = 3,000 miles

Days of trip = 6

Per day, distance covered:

= Total distance / Total days

= 3,000/6

= 500 miles

[tex]\rule[225]{225}{2}[/tex]

Answer:

5000 miles

Step-by-step explanation:

you need to divide 30000 by 6 which is 5000

Simplify the expression so there is only one positive power for each base.

Answers

Answer:

good Good good good good good good good good good

The correct answer is A.

Help pls!! it's urgent.

Answers

Answer:

Step-by-step explanation:

what is the terms, coefficient, constants of 12+10c pls help meeee

Answers

Answer:

The terms are: 12 an d 10c

The coefficient is 10

The constant is 12

The variable is c

Step-by-step explanation:

The terms are the letter, numbers or letters and numbers between the + sign

The coefficient is the number before the letter.

The constant is the number without a letter.

The variable is the letter. I just through that it because they might ask you later.

Answer:

The terms are +10

The coefficient is 10

The constant is 12
The variable is c. I know it’s wasn’t on the question but you should know it for extra credit just in case. :)

Help, please. on photo

Answers

Answer:

Step-by-step explanation: the first eqation is inthe first box that says 1, the second eqation goes to the 1/4 bx, the third one goes in the 4 box and the last does in the box 1. i promise its right i did it on my calculator and i learned it recently and did well.

I hope this help you the answer is in the photo

A). Write an equation in slope-intercept
form for a line that goes through the points
(2, 7) and (4, -4).

Answers

Answer: y = -5.5x +18

Step-by-step explanation: -11/2 = 5.5

Answer: y= -11/2x + 7

Step-by-step explanation:

(2,7) and (4,-4)

Do [tex]\frac{y^{2} - y^1}{x^2-x^1} \\[/tex] so it should look like this [tex]\frac{-4-7}{4-2} =\frac{-\\11}{2}[/tex]

[tex]\frac{-11}{2}[/tex] is your slope

Then you need to find your "b" term.

[tex]-4=\frac{-11}{2} (2) +b[/tex]

Multiply -11/2 by 2 and add 11 to both sides

Then do -4 + 11 which equals 7

So 7 is your b term

So your answer is y= -11/2 + 7

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