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ioda
3 years ago
12

a survery asked 200 people which sports they play regularly. it revealed that 30 played tennis, 25 play golf, 40 play softball,

10 played tennis and golf, 20 played tennis and softball, 15 played golf and softball, and 8 played all three sports. how many of those surveryed played golf and softball but not tennis
Mathematics
2 answers:
xeze [42]3 years ago
8 0

15 is definitely the answer i just had that question on my homework and got it right!!!

vichka [17]3 years ago
7 0
I think that the answer is maybe fiftyfive
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Write the equation 5x + 2y = -6 in general form.
vampirchik [111]

Answer:

5x+2y+6=0

Step-by-step explanation:

General equations are in the form Ax + By + C = 0

So you can add 6 to both sides to make:

5x+2y+6=0

5 0
2 years ago
In a certain college, 33% of the physics majors belong to ethnic minorities. Of 8 students are selected at random from the physi
tiny-mole [99]

Answer: 0.0187

Step-by-step explanation:

The binomial distribution formula for probability :-

P(x)=^nC_xp^x(1-p)^{n-x}, where P(x) is the probability of getting success in x trials , n is the total number of trials and p is the probability of getting success in each trial.

Given : The probability that the physics majors belong to ethnic minorities =0.33

Number of students selected : n= 8

Now, the probability that more than 5 belong to an ethnic minority :-

P(x>5)=P(6)+P(7)+P(8)\\\\=^8C_6(0.33)^6(0.67)^{2}+^8C_7(0.33)^7(0.67)^{1}+^8C_8(0.33)^8(0.67)^{0}\\\\=(\dfrac{8!}{6!2!})(0.33)^6(0.67)^{2}+(8)(0.33)^7(0.67)^{1}+(0.33)^8(0.67)^{0}\\\\=0.0186577086013\approx0.0187

Hence, the probability that more than 5 belong to an ethnic minority = 0.0187

7 0
2 years ago
How many different arrangements can be made with ten pieces of silverware laid in a row if three are identical spoons, four are
LuckyWell [14K]

10 pieces of silverware laid in a row if 3 are identical spoons, 4 are identical forks, and 3 are identical knifes

The arrangement of 'm' objects on which 'n' objects are of same kind is \frac{m!}{n!}

Given: 10 pieces of silverware so its 10!

3 are identical spoons so its 3!

4 are identical forks so its 4!

and 3 are identical knifes so its 3!

Arrangements made = \frac{10!}{3!*4!*3!} = 4200




4 0
3 years ago
Please help with this one
Masja [62]

Answer:

the answer is 15 words after 3 weeks

Step-by-step explanation:

7 0
3 years ago
Find the area please
Damm [24]

Answer:

=114

Step-by-step explanation:

7 0
2 years ago
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