Mathematics Middle School

!GIVING BRAINLIEST!

The sum of 3 numbers is 21. One of the numbers is 12.9. The other two numbers are equal to each other. What is the value of the other numbers

Answers

Answer 1

Answer:

4.05+4.05+12.9=21

Step-by-step explanation:

Take 21 subtract 12.9 first, then you take the leftover number which is 8.1 then divide it by 2 giving you 4.05.

Answer 2
It’s 4.05


12.9+4.05+4.05=21

Related Questions

What is 46 + 47 + 48 + 49 + 50 + 51 + 52 + 53 + 54 = ?

Answers

Answer:

450

Step-by-step explanation:

46 + 54 = 100

47 + 53 = 100

48 + 52 = 100

49 + 51 = 100

100 + 100 + 100 + 100 + 50 = 450

So this set

3 a + 7 + 2 a
&
7 a + 5

Is not equivalent

But how to you tell if one is equivalent or not?

ACTUALLY ANSWER IT AND NOT SAY SOMETHING JUST TO GET POINTS PLEASE xD

Answers

Answer:

Well what you would do is add up all the common numbers u add up 7 with 2 and 3a with 2a to get 9 ± 5a

That is a very different number to 7a ± 5

Does this help? comment if not and I will try to re-explain this

16464444565444444444

Every month, Jay pays $53.42 for his internet bill. How much did he pay for internet over the past 5 months?

First CORRECT answer gets Brainliest! (I'm too lazy to do 5th grade math sorry!)

Answers

Answer:

ik the answer

Step-by-step explanation:

just multiply 5 x 53.42 and the answer is 267.1

Answer:

$267.10

Step-by-step explanation:

Please help! I will mark the first and correct answer brainliest!
56 = 2v + 16
Please solve for v :)

Answers

Answer:

v = 20

Step-by-step explanation:

56 = 2v + 16

-2v = -56 + 16

// multiply both sides by -1

-  (-2v) = - (-56 + 16)

2v = 56 - 16

2v = 40

// divide both sides by 2

v = 20

Answer:

5

6

−

1

6

=

2

+

1

6

−

1

6

Step-by-step explanation:

What is x. pls help me​

Answers

Answer:

x = 40

Step-by-step explanation:

plz mark my answer as brainlist plzzzz if you find it useful.

do it please mmm m mm mmm mm

Answers

Answer:

148 cubed feet

Step-by-step explanation:

(8*2*3)+(5*4*5) = volume

(48)+(100)

148

PLEASE HELP
3 wholes and

1

-

3

minus

2 wholes and

1

-

2

Answers

o.83

Step-by-step explanation:

Conversion a mixed number 3 1/

4

to a improper fraction: 3 1/4 = 3 1/

4

= 3 · 4 + 1/

4

= 12 + 1/

4

= 13/

4

To find new numerator:

a) Multiply the whole number 3 by the denominator 4. Whole number 3 equally 3 * 4/

4

= 12/

4

b) Add the answer from previous step 12 to the numerator 1. New numerator is 12 + 1 = 13

c) Write a previous answer (new numerator 13) over the denominator 4.

Three and one quarter is thirteen quarters

Conversion a mixed number 2 1/

3

to a improper fraction: 2 1/3 = 2 1/

3

= 2 · 3 + 1/

3

= 6 + 1/

3

= 7/

3

To find new numerator:

a) Multiply the whole number 2 by the denominator 3. Whole number 2 equally 2 * 3/

3

= 6/

3

b) Add the answer from previous step 6 to the numerator 1. New numerator is 6 + 1 = 7

c) Write a previous answer (new numerator 7) over the denominator 3.

Two and one third is seven thirds

Add: 13/

4

+ 7/

3

= 13 · 3/

4 · 3

+ 7 · 4/

3 · 4

= 39/

12

+ 28/

12

= 39 + 28/

12

= 67/

12

I got 5/6 for my answer and I’m pretty sure I’m right. :)

Humberto evaluates the expression 4 t 2 for t = 3 . He correctly substitutes 3 for t in the expression, but then says that the value is 144. However, he is incorrect!

What is the correct value of the expression?

Answers

i’m at pretty positive the answer is 36 but you might want to check it

Marcia is at a store with a 20% off sale. She also has a coupon for an additional 10% off the sale price.

Prove or disprove the following statement: A 20% discount on the original price of an item, followed by the use of a 10% off coupon, results in a total discount of 30%.

Answers

Answer:

Step-by-step explanation:

you add the discounts together and get 30 so its true

you add the percentages together to get 30 so yes 30% is correct

Factor the expression using the GCF
100 - 80 = ???

Answers

Answer:

20

Step-by-step explanation:

We found the factors and prime factorization of 80 and 100. The biggest common factor number is the GCF number. So the greatest common factor 80 and 100 is 20.

20



The greatest common factor of 100 and 80 is 20, so the answer is 20

PLEASE HELP!!!!!!!!!!!!!!!

Answers

Answer:

1= 3

2= 1

3= 4

4= 2

Step-by-step explanation:

Ye it’s like 3,4,5,6 or something

It’s actually science I can’t find the science subject pls help!

Answers

Geometry is the same as science honey

Find the Volume of the rectangular prism(in cubic feet)

Answers

I think it’s the second one
Sorry if wrong

Answer pls.
I'll give u brainliest if it's right

Answers

Answer:

The answer is C, (-5.-3)

Step-by-step explanation: brainliest please

The answer is C, (-5.-3)


Multiplying by 1/2 is the same as dividing by 2, when you divide -10 and -6 by 2, you get -5 and -3

PLEASE HELP WITH MATH ASAP!!!!! ITS DUE IN 10 MINS!!! ILL GIVE BRAINLIEST

Answers

Answer:

D, A, I cannot read the rest of #3, C, C.

Step-by-step explanation:

Use your knowledge about parentheses and substitution to solve the following:

7. 2(x + 4) + 10 =

8. 3(6x) + 4 =

9. 10(xy) =

10. 5(x + y) =

11. 2(rs) + 4(x)

12. 2(q) + 2(x + t) =

13. 6(7t + 4s) =

14. 9(10x) + 10y =

15. 2x(xy) =

16. r(s)(t) =

17. (r)(s)(t)(x)(y) =

18. (7x + 2Y) =

Answers

Answer:

7. 2(x + 4) + 10 =2x+18

8. 3(6x) + 4 = 18x+4

9. 10(xy) = 10xy

10. 5(x + y) =5x+5y

11. 2(rs) + 4(x) = 2(rs+2x)

12. 2(q) + 2(x + t) = 2(q+x+t)

13. 6(7t + 4s) = 42t+24s

14. 9(10x) + 10y = 90x+10y

15. 2x(xy) =2x^2y

16. r(s)(t) =

17. (r)(s)(t)(x)(y) =

18. (7x + 2Y) =

I didn't know the last ones- sorry-

18. (7x+2y) equals 14y

Please answer this, thankyou!

Answers

Answer:

y = 2x + 3

Step-by-step explanation:

that's the equation

slope: 2

y-intercept: 3

Answer:

y=2x+3

Step-by-step explanation:

the equation of a line in slope intercept form is

y=mx+b where m is the slope and b is the y intercept

the graph crosses the y axis at 3, so the y intercept is 3

the line goes up 2 over 1, up 2 over 1, etc so the slope is

[tex] m = \frac{2}{1} = 2[/tex]

thus we get y = 2x + 3

What signs and symbols can be used to show multiplication?

Answers

Answer:

(x) and (•), (*)

Step-by-step explanation:

uwusisisjjskssj

Answer:

what the hell it didnt let me answer

Step-by-step explanation:

Plz help!
Clyde is baking, and the recipe requires 1 1/3 cups of flour. Clyde has 2 cups of flour, but he is doubling the recipe to make twice as much. How much more flour does Clyde need? Write an equation to represent the problem. Let c represent the amount of flour Clyde needs, and then solve it.

Answers

Answer:

Clyde needs 2/3 cup more.

Step-by-step explanation:

The equation can be:

C = 2 - 2( 1   1/3 )

If Clyde is doubling the recipe, he will need 2 2/3 cups of flour. 2 2/3 minus 2 (the amount he has) will give you your answer.

Please help 20 points when you solve and brainleist promise to whoever does it first

Answers

Answer:

Solve for the ? The angle is 40 degrees. If this is not the answer you're looking for please let me know

Step-by-step explanation:

The ? Is 50. 180-40-90. Hope it helps

If an object is thrown upward with an initial velocity of 16 ft/s, its height after t seconds is given by h - 16 - 16t^2.
Find the maximum height attained by the object. Show your work.
A) 0 ft
B) -12 it
C) 16 ft
D) 4 ft

Answers

B is the Answerrrrrrrrrrrrrrrr
B!!!!!!!!!!!!!!!!!!!

Need help fasttttttt

Answers

The answer is 10 hopes this helps
The answer is 10 cubes.

Mrs. Raymond purchased a rectangular toy chest. Its dimensions are 4 1/2 feet by 2 1/2 feet by 3 feet. What is the total volume of the toy chest?

Answers

Answer:

33 3/4 feet cubed

Step-by-step explanation:

4 1/2 x 2 1/2 x 3

I'LL GIVE BRAINLIEST IF YOU EXPLAIN THE ANSWER:

B or C

Answers

Answer:

cccccccccccccccccccccccccccccc!!

Step-by-step explanation:

The answer is C.
Hope I helped

Is the area of the shaded rectangle 6(2−m) or 6(m−2)?
Explain how you know.

Answers

Answer:

6(2-m)

Step-by-step explanation:

the m could not be times only two so the answer would have been 12-m no matter what you don't add or subtract or times the letter because unless if the number had the same letter!

Hope this helps!! if it doesnt i apalogize!! god bless!! - Natalia

Answer:

6(m-2) because you start from 6--->  then M--->  then 2

Step-by-step explanation:

If this doesn't help here is a step by step

Find the area of the shaded region: How to find the area of shaded region of a rectangle within another rectangle? Step 1: Find the area of the larger shape and the smaller shape. Step 2: Subtract the areas. Step 3: Write the units. How to find the area of a shaded region of a circle with an inscribed triangle?

I'LL GIVE BRAINLIEST IF YOU EXPLAIN THE ANSWER:

























B or D

Answers

Answer:

C) 16 cm^2

Step-by-step explanation:

scale is 1:8 so 2 cm^2x8=16

WILL GIVE BRAINLIEST PLEASE ADD THE REASONING PART!!
A supermarket marks down the price of a $3.00 loaf of bread by 20%. What is the discount and the new price of the loaf of bread?

Answers

Answer:

new price= $2.40

Step-by-step explanation:

20%= 20/100= 1/5

$3.00/5= 00.60

1/5 of the price is being subtracted from $3.00

$00.60 is 1/5

3.00-.60= 2.40

Answer:

The discount is 20% off (you only have to pay 80% of the original price)

The new price of the bread is $2.40 (60 cents off)

Step-by-step explanation:

Because 20 goes into 100, 5 times I did 3.00/5

3.00/5= 0.6

Subtract 0.60 from the 3 dollars and that's it!

3.00-0.60= 2.40

Hope this helps!

SOMEONE PELASE HELPP!!!!

Answers

2/7

:)))))))))))))))) YW

Answer 2/7
Exclamation it’s right

Can someone tell me how you can use disributive property on this equation to make it equal the same thing because i dont understand the x is confusing and i dont understand the point of the x do it in 2 ways break it down once and then break it down again.

Answers

Answer:

WEEE

Step-by-step explanation:

All you have to do is so 1/2 times 10x and 1/2 times 4 and then you should get 5-2 which is three I think that is the answer

Compare the volumes of Prism A and Prism B.

The volume of Prism A is ____________the volume of Prism B.

Answers

Answer:

111222333

Step-by-step explanation:

...---...

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