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3 years ago

What is 57.42 + 4 + 1.02? Pls help and I need a small simple explanation...

Mathematics

2 answers:

vova2212 [387]3 years ago

6 0

Answer:

62.44

Step-by-step explanation:

Line up the decimals and then add them up like usual, and then place the decimal where it should go. THen you get your answer.

Hope this helped!

siniylev [52]3 years ago

3 0

Answer:

62.44

Step-by-step explanation:

line the decimals up

57.42

+1.02

58.44

now add 4

58.44

+4.00

62.44

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Which is bigger: 17.5% or 1/6

elena-s [515]

In order to find this out, let's convert both of them into percents. Since 17.5 is already a percent, we only have to convert 1/6 into a percent. To convert 1/6 into a percent, you have to divide the numerator by the denominator. If you do that, you will get 0.1666..... as a repeating decimal. Now, multiply the decimal by 100 or just move the decimal 2 spaces to the right to get the percent. If you do that, you will get 16.6%. Since it is a repeating decimal, you can round it to 16.7%. So, 17.5% is larger than 1/6.

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3 years ago

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-7(y-1)= 21 Show how you answered the question step by step.

Stolb23 [73]

Step-by-step explanation:

-7(y-1)= 21

-7y+7=21

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3 years ago

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Today there are a total of six toll-free area codes: 800, 844, 855, 866, 877, and 888. Assume that all seven digits for the rest

Ludmilka [50]

Answer:

$6 \times 10^{7}$

Step-by-step explanation:

Total number of toll-free area codes = 6

A complete number will be of the form:

800-abc-defg

Where abcdefg can be any 7 numbers from 0 to 9. This holds true for all the 6 area codes.

Finding the possible toll free numbers for one area code and multiplying that by 6 will give use the total number of toll free numbers for all 6 area codes.

Considering: 800-abc-defg

The first number "a" can take any digit from 0 to 9. So there are 10 possibilities for this place. Similarly, the second number can take any digit from 0 to 9, so there are 10 possibilities for this place as well and same goes for all the 7 numbers.

Since, there are 10 possibilities for each of the 7 places, according to the fundamental principle of counting, the total possible toll free numbers for one area code would be:

Possible toll free numbers for 1 area code = 10 x 10 x 10 x 10 x 10 x 10 x 10 = $10^{7}$

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3 years ago

I need help with This one

balandron [24]

Answer:

1 and 2

Step-by-step explanation:

If y was 1: -2 x 1 + 18 = -2 + 18

= 16 This works

If y was 2: -2 x 2 + 18 = -4 + 18

= 14 This works

If y was 3: -2 x 3 + 18 = -6 + 18

= 12 This does not work since -2y + 18 has to be greater than 12.

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aleksandr82 [10.1K]

Answer:

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