All categories

2 years ago

What is the fraction 1/2+2/5=?

Mathematics

2 answers:

fiasKO [112]2 years ago

7 0

Solve the following:

1/2 + 2/5

Find a common denominator:

1*5/2*5 + 2*2/5*2

5/10 + 4/10

Now add:

9/10

Answer: 9/10

Hope I helped!

-Char

bija089 [108]2 years ago

3 0

Since both 1/2 and 2/5 have different denominators, you have to find fractions equivalent to them, (using multiples) that both have the same denominator. It's when 1/2 is equal to 2/4.
1/2=5/10
2/5=4/10
then solve with your "new" fractions with more ease.
5/10+4/10=9/10
If possible, simplify, but 9/10ths is already in it's simplest form.

Answer: 9/10

You might be interested in

A supermarket sells 2 cans of ground coffee for 18.50. The cost varies directly with the number of cans. How much do 5 cans of c

xz_007 [3.2K]

The answer is $46.25. Here is how I found it out: I did 18.50 divided by 2 to get the cost of one can then I simply did the cost of one can (which was $9.25) times 5 to get the cost of 5 cans. And I got 46.25 so $46.25 is your answer. Hope this helped you answer the question and know how to find the answer of this kind of question in the future!

7 0

2 years ago

What is the value of y?

Molodets [167]

B, because
3/15=x/75
75/15=5
3*5=15
15 is your answer.

4 0

2 years ago

. When the last 3 digits of a year (such as

Nataliya [291]

Answer:

A ; 23rd century

Step-by-step explanation:

Here, we want to select which of the options is next to have a descending year.

Since all are in the same century i.e 20-something, we do not have an issue with the first digit.

What we need to work on is the last three digits;

We can have 2210, we can have 2321, we can have 2432, we can also have 2543 and so on.

The most recent of all these is the year 2210, so what century does this belong?

Kindly note that, the years 2001-2100 belong to the 21st century.

The years 2101-2200 belong to the 22nd century while the years 2201-2300 belong to the 23rd century

The year we are looking to place is the year 2201 and thus belongs to between 2201-2300 which is the 23rd century

8 0

2 years ago

The amount of calories consumed by customers at the Chinese buffet is normally distributed with mean 2885 and standard deviation

aliina [53]

Answer:

a. X~N(2,885, 651)

b. 0.086291

c. 0.00058

d. 3213.10 calories

Step-by-step explanation:

a. -A normal distribution is expressed in the form X~N(mean, standard deviation).

-Let X a random variable denoting the number of calories consumed.

-X is a is a normally distributed random variable with mean 2885 and standard deviation 651.

-This distribution is expressed as X~N(2,885, 651)

b. The probability that less than 2000 calories are consumed is calculated using the formula:

$P(X$

#substitute the given values in the formula to solve for P:

$P(X$

Hence, the probability of consuming less than 2000 calories is 0.08691

c. The proportion of customers consuming more than 5000 calories is calculated as:

$P(X>x)=P(z>\frac{\bar X-\mu}{\sigma})\\\\=P(Z>\frac{5000-2885}{651})\\\\=P(z>3.2488)\\\\=1-0.99942\\\\=0.00058$

Hence, the proportion of customers consuming over 5000 calories is 0.00058

d. The least amount of calories to get the award is calculated as:

1% is equivalent to a z value of 0.50399.

-We equate this to the formula to solve for the mean consumption:

$0.01=P(z>\frac{\bar X-\mu}{\sigma})\\\\=P(z>\frac{\bar X-2885}{651})\\\\\1\%=0.50399 \\\\\frac{\bar X-2885}{651}=0.50399 \\\\\bar X=0.50399\times 651+2885\\\\=3213.09$

Hence, the least amount of calories consumed to qualify for the award is 3213.10 calories.

8 0

2 years ago

Can someone help me out with this?? It’s due soon...

Inessa05 [86]

1. 1.25

2. 0.85

3. 0.2

Hope this helped.

5 0

2 years ago