What is the sum of 2/5 and 2/4?

Answers

Answer 1

Answer: a/b+c/b=(a+c)/b
make bottom number same

multiply by 1 or x/x where x=x
easy way is
if you had
a/b+c/d
multiply a/b by d/d and multiply c/d by b/b

2/5 times 4/4=8/20
2/4 times 5/5=10/20

add

8/20+10/20=(8+10)/20)=18/20=9/10

I should have simplified 2/4 to 1/2 first

Answer 2

Answer: 18/20 because you can't add 5 and 4 so you make the denominator the same so you just multiply 5×4 and 4×5this will give you 8/20+10/20=18/20

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A small town with a population of 1,200 residents held elections for the position of mayor. Four candidates had announced their candidature for the election. On the day of the election, a local newspaper conducted an exit poll near two polling booths with two groups of 100 residents each. The results are given in the table shown below.Name Group A Group BChris Jones 51 29Patrick Smith 6 4Michael Small 30 54Susan Davis 13 13Which of the following statements about the data above is true?A. The estimated number of residents who would have voted for Michael Small is higher for Group B than Group A.B. The estimates for both groups show an equal number of residents would have voted for Michael Small.C. The estimated number of residents who would have voted for Susan Davis is higher for Group A than Group B.D. The estimated number of residents who would have voted for Michael Small is higher for Group A than Group B.

To which subsets of the real numbers do the number 1.68 belong to

Answers

1.68 belongs to rational numbers

Kaylah's cell phone has a mass of 50,000 centigrams. what is the mass of her phone in grams

Answers

50,000 centigrams / 100 = 500 grams

How do you translate " the quotient of eighty-three and six less then a number" as an algebraic expression?

Answers

Let the number be x.

83/(x-6)

The sales tax in bills state is 6% Bill bought a scionon having a sales tax of $820 what was the cost of the car round to the nearest dollar

Answers

so if you get 20% of 13,668 you get 820.08
If you get 20% of 13,666 you get 819.96
If you get 20% of 13,667 you get 820.02
and if you get 20% of 13,665 you get 819.90
so if they want you to round the cents then 13,666 would be your answer because when you do this ----> 13,666X.06=819.96 you might have to round the 6 to 9 which makes 819.96 into 820 so answer is B

What is the approximate volume of the sphere? Use 3.14 to approximate pi and round the answer to two decimal places if needed. A. 48 cm3

B. 150.72 cm3

C. 288.00 cm3

D. 904.32 cm3

Answers

There should have been an image that accompanied this word problem.
I saw the image of the sphere. It has a radius of 6 cm.

We need the radius of the sphere to solve for its volume.

Volume of a sphere = 4/3 π r³
V = 4/3 * 3.14 * (6m)³
V = 1.33 * 3.14 * 216cm³
V = 902.06 cm³

I solved the problem using the full value of pi and the given answer was Choice D. 904.32

There is a difference in the actual answers because of the use of numbers with that only extends two decimal places.

The equation of a hyperbola is shown. (x-3)^2/81-y^2/144=1
What are the coordinate of the center of the hyperbola?
A.) (3,0)
B.) (0,-30)
C.) (0,3)
D.) (-3,0)

Answers

for equatin (x-h)^2/a^2 - (y-k)^2/b^2 =1 center will be (h,k)
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