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Llana [10]
2 years ago
7

Ten friends go out to dinner together: 7 order an appetizer, 5 order a soup, and 4 order a salad. If everyone orders something,

but no one orders exactly two things, how many people order all three things?
Mathematics
2 answers:
gavmur [86]2 years ago
7 0
4 people order all 3 things
Goshia [24]2 years ago
6 0

Answer:

2 people orders all three things

Step-by-step explanation:

Let's  suppose that who order all three things.

So , i can't draw a venn diagram here, but i can explain.

The first circle is 7 , the second circle is 5.

7 - 5 = 2

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how do you solve 20 minus 3/4? lol I forgot. I did this back in September, but now we have to do it again. help solve please.
lana66690 [7]
20-3/4= 19 1/4
19 1/4 is your answer.
3 0
3 years ago
Read 2 more answers
Temperature fell on one night in London to 12 degrees centigrade. On same night in Moscow temperature fell to -5degrees centigra
galina1969 [7]

Answer:

17(maybe)

Step-by-step explanation:

12-(-5)=17

8 0
3 years ago
Help please? I’m not too sure what to do?
mamaluj [8]

Answer:

75

Step-by-step explanation:

Average needed to get grade C = 70

Average = Total Amount / No of Items.

No of items = 4

therefore Total needed = 70 x 4 = 280

current total score = 66.75 + 66 + 72.25 = 205

the fourth test minimum score = 280 - 205 = 75

6 0
3 years ago
a certain triangle has a perimeter of 3067 mi. the shortest side measures 71 mi less than the middle side and the longest side m
UkoKoshka [18]

Answer:

The measure of the shortest side is 851 miles

Step-by-step explanation:

Let

x ----> the measure of the shortest side

y ---> the measure of the middle side

z ---> the measure of the longest side

we know that

The perimeter of triangle is equal to

P=x+y+z

P=3,067\ mi

so

3,067=x+y+z ----> equation A

the shortest side measures 71 mi less than the middle side

so

x=y-71 ----> equation B

the longest side measures 372 mi more the the middle side

so

z=y+372 ----> equation C

substitute equation B and equation C in equation A

3,067=(y-71)+y+(y+372)

solve for y

3,067=3y+301\\3y=2,766\\y=922

Find the value of x

x=y-71\\x=922-71\\x=851

therefore

The measure of the shortest side is 851 miles

6 0
3 years ago
2(n2 + 1) – 3(n2 – 3) + 3(2n2 – 2),<br> n=(1/4)
IceJOKER [234]

]Answer:

5\frac{5}{16}

Step-by-step explanation:

Substitute the value of the variable into the equation and simplify.

2(\frac{1}{4} ^{2} +1-3(\frac{1}{4} ^{2} -3)+3((2*\frac{1}{4}^{2}  )-2)

Solve it out.

Multiply / divide / add / subtract everything out.

4 0
3 years ago
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