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andriy [413]
3 years ago
12

Hey guys I really need help on this one!

Mathematics
1 answer:
Marina CMI [18]3 years ago
4 0
I’m pretty sure it’s the last one. :)
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A group of 18 people ordered soup and sandwiches for lunch. Each person in the group either ordered one soup or one sandwich . T
kkurt [141]
Let's say a = number of ordered soups, b = number of ordered sandwiches.

Then 4.5a + 7.75b = 113.50, and a and b are integers between 0 and 18 inclusive.

How do we tackle this? If all ordered soup, the cost would be $81, so we'll have at least 4 sandwiches. If all ordered sandwich, the cost would be $139.5, so at most 15 sandwiches were ordered. You also know an even number of sandwiches was ordered, to let the price end at 50 cent.

If you brute-force from 4,6,8,10,12 to 14 sandwiches, you find the answer at 10 sandwiches and 8 soups.

10*7.75 + 8*4.50 = 113.50


8 0
3 years ago
Find the 22nd term of the following sequence:<br> 5, 8, 11, ...<br> 63 <br> 71<br> 14<br> 68
Wittaler [7]

68 is the 22nd term of the following sequence.

<u>Step-by-step explanation:</u>

  • The given sequence is with the same common difference between the two consecutive number in the series thus it is said to be the  Arithmetic progression ( AP).
  • For finding the nth term in the AP we have a formula tn = a + (n-1) × d
  • Here a is the first term , n is the number of the term to be founded and d is the common difference between the two consecutive number in the series.
  • Thus here tn = 5 + ( 22 - 1 ) × 3.
  • On subtracting we get tn = 5 + (21 ) × 3
  • On multiplying we get tn = 5 + 63
  • After adding we get tn = 68. It is the 22nd term in the given series.
5 0
3 years ago
Simplify.<br><br> (-7p)3<br><br> please help
OleMash [197]

Answer:

-343p^3

Step-by-step explanation:

This is the answer because -7x-7x-7 would be -343 and you MUST keep the negative sign. The p x pxp would be p^3

Multiply the numbers:

-343p^3 would be your answer

Hope this helps!! :D

8 0
3 years ago
Read 2 more answers
A circle with a radius of 10,20 or 4 inches has a central angle of 0.25 radians that intercepts an arc of 25,5 or 16 inches
WARRIOR [948]
The radius would be 10 and the arc would be 5.
I hope this helps.
Have a blessed day!
7 0
3 years ago
The sum of b and 24 <br>18 less than x <br>an amount of a divided by 3​
telo118 [61]

Answer:

b+24

x-18

a/3

Step-by-step explanation:

3 0
3 years ago
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