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3 years ago

A 5 lb. bag of potatoes this week is $3.50. Last week, it cost $2.75.

Mathematics

1 answer:

wlad13 [49]3 years ago

3 0

Answer:

0.21

Step-by-step explanation:

to find the percent change of something you must subtract the new-old divided by the original price.

$3.50-$2.75= 0.75

0.75÷3.50

0.2142857142857143‬

so we round and get

0.21

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At a high school, 18% of the students play football and 6% of the students

aliina [53]

Answer:D. 33.3%

Step-by-step explanation:

8 0

3 years ago

The sum of the numerator and the denominator of the certain fraction is equal to 4,140. When the fraction was reduced, the resul

Sunny_sXe [5.5K]

Answer:

1449/2691

Step-by-step explanation:

We must start from the fraction that is 7/13. Now, we know that it was simplified, with trial and error we can reach the result.

First, let's multiply both by 200:

7 * 200 = 1400

13 * 200 = 2600

1400 + 2600 = 4000

It means that we are missing 140, to reach the objective, that is, we are close, let's try 205 now:

7 * 205 = 1435

13 * 205 = 2665

1435 + 2665 = 4100

We get even closer, only 40 missing, let's try 207 below:

7 * 205 = 1449

13 * 205 = 2691

1449 + 2691 = 4140

We managed to get to the corresponding numbers, therefore the original fraction was 1449/2691

3 0

2 years ago

In a class of 18 children, 13 have pet dogs at home, 11 have pet cats, and 8 have both. How many kids do not have four-legged pe

8_murik_8 [283]

Answer:

2 people

Step-by-step explanation:

8 have both that means that of the 11 people that have cats 3 have only cats and of the 13 that have dogs 5 only have dogs therefore 2 people don't have four-legged animals at home

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3 years ago

Read 2 more answers

5 × 10 to the power of 22 is how many times greater than 1 × 10 to the power of 21

alekssr [168]

Answer:

50 times greater

Step-by-step explanation:

If there are two numbers A and B, where A is greater than B,

If we want to find how many times greater A is to B, we simply divide, so that would be

A/B

Now, we have

$5*10^{22}$

and

$1*10^{21}$

We simply need to divide to find how much greater is the first number than the second number. Remember dividing numbers in scientific notation:

$\frac{a*10^b}{c*10^d}\\=(\frac{a}{c})*10^{b-d}$

Thus, we have:

$\frac{5*10^{22}}{1*10^{21}}\\=(\frac{5}{1})*10^{22-21}\\=5*10^{1}\\=5*10\\=50$

So the first number is 50 times greater than the second

4 0

3 years ago

How do you simplify this

katen-ka-za [31]

It's 2/5 in decimal form it is 0.4.

5 0

3 years ago