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3 years ago

Is 4/2 + 5/2 a rational or irrational number

Mathematics

2 answers:

kirill115 [55]3 years ago

7 0

Hey there! :D

Rational number- a number that can be put into a fraction, ratio, or is a repeating decimal.

Irrational number- a number that cannot be put into a fraction or ratio, and it's decimals never repeat.

So, 4/2+5/2= 9/2

9/2 is already a fraction, so we know it has to be a rational number.

I hope this helps!

~kaikers

sesenic [268]3 years ago

6 0

As both 4/2 and 5/2 are rational Numbers and Sum of rationals is a Rational Number.
Therefore, 9/2 is a Rational Number.

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For the choir concert, the choir director has asked that everyone wear either black pants or blue jeans. Three times as many stu

Katyanochek1 [597]

Answer: 33 students wore blue jeans .

Step-by-step explanation:

Let x be the number of black pants.

Given : For the choir concert, the choir director has asked that everyone wear either black pants or blue jeans.

Three times as many students wore black pants as blue jeans.

i.e. Number of blue pants = 4x

If there are forty-four students in the choir, then we have

$x+3x=44\\\\\Rightarrow\ 4x=44$

Divide both sides by 4 , we get

$x=11$

Thus , the number of black pants = 11

Then , the number of blue pants = $3\times11=33$

Therefore, 33 students wore blue jeans .

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4 years ago

Kings Department Store has 625 rubies, 800 diamonds, and 700 emeralds from which they will make bracelets and necklaces that the

Assoli18 [71]

Step-by-step explanation:

Let Xb be the no of braclets made

Let Xn be the no of necklaces made

Max Z=250Xb + 500Xn (Objective Function)

Subject to

2Xb + 5Xn <= 625 (rubies)

3Xb + 7 Xn <= 800 ( diamonds)

4Xb + 3 Xn <= 700 (Emeralds)

Xb>=0 (non-negativity)

Xn >= 0 (non negativity

8 0

3 years ago

Read 2 more answers

An airplane flies 617 miles in the morning. Then it flies 385 miles in the afternoon. About how many more miles does th airplane

Rashid [163]

If you subtract 617 and 385 it will give you the answer which is 232 the plane did 232 in the morning than in the afternoon

Hope it helps :)

4 0

3 years ago

Is 18 a divisor of 6?

Reptile [31]

Yes it is because 18÷6 is 3 and 6×3=18

5 0

3 years ago

The area of a rectangular wall of a barn is 45 square feet. Its length is 12 feet longer than the width. Find the length and wid

ValentinkaMS [17]

Answer:

Mark as brainliest

Step-by-step explanation:

by using the formula for area: A= L x W substitute in what you know: A = 54 , the length in terms of the width so use

L=12 + 2W.

Now when everything is plugged in you now have: 54 = (12 + 2W) x W

Then use the Distributive Property to simplify: 54 = 12W + 2W2

Since you know have a quadratic to solve get it in the form ax2+bx + c = 0 so that you can solve it:

You do this by subtracting 54 from both sides and putting the 2W2 first so now it looks like this:

2W2 + 12W -54 = 0

Using the quadratic formula where a =2, b = 12, and c = -54.

Find b2-4ac which is the discriminant:

(12)2-4*2*(-54)=576

Take the square root of 576= 24

Now substitute the rest of the values into the Quadratic Formula:

It will look something like this: W = (-b plus or minus the square root of the discriminant)/2a

The two possible answers are:

W = (-12 + 24)/4 and W = (-12 - 24)/4

W = 12/4= 3 and W = -36/4= -9 (This second answer isn't possible because length can't be negative)

So the answer is:

Width = 3 feet Length = 12 + 2W = 12 + 2*3= 12 + 6 = 18 feet

This checks because A = L x W and 54 = 18 x 3

4 0

3 years ago