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Nookie1986 [14]
3 years ago
15

Group a contains 157 students. of these, 51 students in group a have taken math 2a, 80 have taken math 2b, and 70 have taken mat

h 2c. 15 have taken both math 2a and 2b, 20 have taken both math 2a and 2c, and 13 have taken both math 2b and 2c. how many students in group a have taken all three classes?
Mathematics
2 answers:
Masteriza [31]3 years ago
5 0
86 took 2A
and this is the answer to you question
zhenek [66]3 years ago
5 0

Answer:

86

Step-by-step explanation:

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4 more than one third of a number n is 6. An equation is? The solution is n =?
harkovskaia [24]

Answer:

 \frac{1}{3}n  + 4  = 6  

6

Step-by-step explanation:

Given problem:

      4 more than one third of a number n is 6

Unknown:

The equation = ?

Solution of the number  = ?

Solution:

 let the number  = n

So, 4 more than one third of a number;

  One third of n = \frac{1}{3}n

  4 more;

                \frac{1}{3}n  + 4

   is 6;

             \frac{1}{3}n  + 4  = 6   (equation of the expression)

Let us now solve the equation:

                         \frac{1}{3}n  + 4  = 6  

                    \frac{1}{3}n = 6 - 4

                   \frac{1}{3}n = 2

                     n = 6

5 0
3 years ago
Olivia wrapped a string around a circle and found it was 30 mm long. Approximately, what is the radius of this circle
mafiozo [28]

Answer:7.5

Step-by-step explanation: cause I looked it up lol

8 0
3 years ago
Can you guys help me on question 8 and 9 :)
Reika [66]

Answer:

for 8 i think its a b and c sorry if am wrong

8 0
3 years ago
. HELP DUE IN A FEW MIN ASAP im stupidssssss
adelina 88 [10]

Answer:

B

Step-by-step explanation:

80*17=1360/choice B

5 0
3 years ago
What is 3 less than -2
Anastasy [175]
-2 - 3 = -5
The answer is negative 5.
4 0
3 years ago
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