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Contact [7]
3 years ago
13

How many ways can choose 7 friends to be invited to the party out of 20 total friends?

Mathematics
1 answer:
Lelu [443]3 years ago
3 0

Answer:

Each of the 7 friends could be present or not present (2 cases) at the party giving total of  27  scenarios.

Since at least one must be present we exclude the case that none of them is present. So the answer would be:

27−1=127.

Step-by-step explanation:

i actually dont know but can you report me and dont ask

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Find each number. Round to the nearest tenth if necessary
Pavel [41]

Answer:

  1. 96
  2. 6.9
  3. 25%
  4. 8%
  5. 79
  6. 33.8

Step-by-step explanation:

Here is the complete question: Find each number. Round to the nearest tenth if necessary.

  1. 80% of 120.
  2. 115% of 6
  3. What percent of 128 is 32?
  4. 3 is what percent of 36?
  5. 23.7 is 30% of what number?
  6. 71/2% of what is 12?

1) 80% of 120

= \frac{80}{100} \times 120= 8\times 12

= 96

∴ 80% of 120= 96

2) 115\%\ of\ 6

=\frac{115}{100}\times 6= 1.15\times 6

∴ 115\%\ of\ 6 = 6.9

3) What percent of 128 is 32?

= \frac{32}{128} \times 100

= 25\%

4) 3 is what percent of 36?

= \frac{3}{36} \times 100

= 8\%

5) 23.7 is 30% of what number?

Let the number be "x".

⇒ \frac{30}{100} \times x= 23.7

Cross multiplying

⇒ x= \frac{23.7\times 100}{30}

∴ x= 79.

6) 71/2% of what is 12?

Lets assume the required number be "x".

⇒ \frac{71}{2} \times 100\times x= 12

cross multiplying both side.

⇒x= 33.8

∴ 71/2% of 33.8 is 12

6 0
3 years ago
What is 48.36 divided by 36?
pickupchik [31]

Answer:

1.34333333333

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
There is a closed carton of eggs in Mai's refrigerator. The carton contains e eggs and it can hold 12 eggs.
lakkis [162]

Answer:

the inequality means there is less than 12 eggs

Step-by-step explanation:

" e eggs" is < 12

8 0
2 years ago
Jessica's Furniture Store manager is trying to figure out how much to charge for an armchair that just arrived. The chair was pu
VARVARA [1.3K]

Answer: The manager should sell the chair for $1740.

Step-by-step explanation:

45% of 1200       Solve this to find the amount increase

0.45 * 1200 =  540      Now add this amount to find the price.

$1200 + $540 = $1740

or  you could do it this way

100% + 45% =  145%

145% of 1200 =?

1.45 * 1200 = 1740

3 0
3 years ago
Jodie read 42 randomly chosen books from each library in her city. Each library is the same size.
ahrayia [7]

Answer:

Yes!

Step-by-step explanation:

The definition of Representative is

A representative sample is a group or set chosen from a larger statistical population or group of factors or instances that adequately replicates the larger group according to whatever characteristic or quality is under study

so your book is whats understudy and with that you'll know that yes, yes it is

3 0
3 years ago
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