What two mixed numbers have a sum of 3

Answers

Answer 1

Answer: There are a few combinations of mixed numbers that can have a sum of 3. A mixed number must have one whole number and one fraction. Combinations of mixed numbers that can have a sum of 3 are 1 and 1/2 + 1 and 1/2, 1 and 1/3 + 1 and 2/3, 1 and 5/8 + 1 and 3/8 and so on.

Answer 2

Answer:

Answer:

1 and 2

Step-by-step explanation:

1 + 2 = 3

sum = addition

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Kevan is 6 years younger than his sister Katie. Melanie is twice as old as kevan. How old are all three siblings? A. If you let K represent Katie's current age, what expression can you use to represent kevan's current age?
B. Based on your answer to part a, what expression represents Melanie's age?
C. If Melanie is 18 years old , what equation can you write to solve the problem?
D. Solve the equation. How old are kevan and Katie?

Answers

A:
k=katie's age
ke=kevan's age=k-6 (Kevan is 6 years younger than his sister Katie)

B:m=Melanie's age=2*ke=2k-12 (Melanie is twice as old as kevan)

C and D: M=18

so this means that

18=2*ke
if we divide both by 2, we get:
9=ke
Kevan is 9 years old

and 18=2k-12

add12 to both sides:
30=2k
15=k
Katie is 15 years old

Answer:

A- k-6

B- 2(k-6)

C- 18 = 2 (k-6)

D- katie- 15, kevan 9

Step-by-step explanation:

at a restaurant the ratio of kids meals sold to adults meal was 5:4. if there were 20 kids meals sold, what is the combined amount of kids and adults sold meals sold?

Answers

I would set up a proportion:

$(20)/(x)=(5)/(4)$

The proportion basically says, "if there are 5 kids meals for every 4 adult meals, that means 20 kids meals would mean x adult meals." Just cross multiply and then solve for x:

$(20)/(x)=(5)/(4)\n5x=80\nx=16$

That means there are 20 kids meals sold and 16 adult meals sold, so the result is:

36 meals in total.

$5x=20\ \ \ \ | divide\ by\ 5\n\nx=4\n\n5x+4x=9x=9*4=36\n\nCombine\ amount\ is\ 36.$

Solve for y -2(x + 3 y) =18

Answers

Answer:

y= -3y - 1/3x

Step-by-step explanation:

-2(x + 3y) = 18 Distribute the -2 to the x + 3y

-2x - 6y = 18

+2x +2x Add the 2x to both sides

-6y = 18 + 2x Divide both sides by -6

y= -3y - 1/3x

Which polynomial has (3x + 2) as a binomial factor? 6x3 + 3x2 + 4x + 2 12x2 + 15x + 8x + 10 18x3 – 12x2 + 9x – 6 21x4 + 7x3 + 6x + 2

Answers

If binomial (3x+2) is a factor of some polynomial, then number $x=-(2)/(3)$ is this polynomial's root. Check all polynomials:

A. For the polynomial $6x^3 + 3x^2 + 4x + 2,$

$6\left(-(2)/(3)\right)^3 + 3\left(-(2)/(3)\right)^2 + 4\left(-(2)/(3)\right) + 2=-(16)/(9)+(4)/(3)-(8)/(3)+2=-(10)/(9)\neq 0.$

B. For the polynomial $12x^2 + 15x + 8x + 10,$

$12\left(-(2)/(3)\right)^2 + 23\left(-(2)/(3)\right) + 10=(16)/(3)-(46)/(3)+10=0.$

C. For the polynomial $18x^3-12x^2 + 9x-6,$

$18\left(-(2)/(3)\right)^3 -12\left(-(2)/(3)\right)^2 + 9\left(-(2)/(3)\right) -6=-(16)/(3)-(16)/(3)-6-6\neq 0.$

D. For the polynomial $21x^4 + 7x^3 + 6x + 2,$

$21\left(-(2)/(3)\right)^4 +7\left(-(2)/(3)\right)^3 +6\left(-(2)/(3)\right) +2=(112)/(27)-(56)/(27)-4+2\neq 0.$

Answer: correct choice is B

Answer:

B 12x2 + 15x + 8x + 10

Step-by-step explanation:

Did it

Marcia says she can use rounding to find the exact product of 6x75. She says that since 75 is halfway between 7 tens and 8 tens the exact product of 6x75 must be halfway between 6x70 and 6x80 is she correct

Answers

Marcia is correct if she says she can use rounding to find the exact product of 6x75; the exact product of 6x75 must be halfway between 6x70 and 6x80.

What is an arithmetic operation?

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has basic four operators that is +, -, ×, and ÷.

It is given that:

Marcia says she can use rounding to find the exact product of 6x75.

From the data:

Find the product of 6 and 75:

= 6x75

= 450

Find the product of 6 and 70:

= 6x70

= 420

Find the product of 6 and 80:

= 6x80

= 480

= 420 + 30

=450

= 450 + 30

= 480

The expression can be defined as the combination of constants and variables with mathematical operators.

Thus, Marcia is correct if she says she can use rounding to find the exact product of 6x75; the exact product of 6x75 must be halfway between 6x70 and 6x80.

Learn more about the arithmetic operation here:

brainly.com/question/20595275

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Yes because 6x75=450
6x70=420
6x80=480

So 420+30=450
450+30=480

Write a real-world problem that can be represented by the equation 224=3.5r

Answers

One pound of meat costs 3.50$. If the total is 244$, how many pounds of meat have you bought?

Three and half tonnes of gold weigh 224 kg. What is the weight of 1 tonne of gold.

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30/35 in simplest form.

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