All categories

3 years ago

Nina asked 100 students if they have a pet. Of the students 19/100 have a cat. How many students have a cat?

Mathematics

2 answers:

Aliun [14]3 years ago

8 0

19 is the answer because she asked 100 students and 19 of them said they have cats

Yuliya22 [10]3 years ago

6 0

19 people have cats because of the 100 people 19 said they do.

You might be interested in

James surveyed people at school and asked whether they bring their lunch to school or buy their lunch at school more often. The

Brrunno [24]

Answer:

The correct option is 4.

Step-by-step explanation:

Given information:

Bring lunch : 46 males, 254 females

Buy lunch : 176 males, 264 females

Total number of peoples is

$46+254+176+264=740$

Total number of males is

$46+176=222$

The probability of male is

$P(Male)=\frac{Males}{Total}=\frac{222}{740} =0.3$

Since probability of males is 0.3, therefore options A and C are incorrect.

Total number of persons who buys lunch is

$176+264=440$

The probability of persons who buys lunch is

$P(\text{Buys lunch})=\frac{\text{Buys lunch}}{Total}=\frac{440}{740} =\frac{22}{37}$

We need to find the probability of P(male | buys lunch).

According to the conditional probability, we get

$P(\frac{A}{B})=\frac{P(A\cap B)}{P(B)}$

P(male | buys lunch) $=\frac{P(\text{male }\cap \text{ buys lunch})}{P(\text{buys lunch})}$

P(male | buys lunch) $=\frac{\frac{176}{740}}{\frac{22}{37}}$

P(male | buys lunch) $=\frac{2}{5}=0.4$

Therefore the correct option is 4.

8 0

3 years ago

Read 2 more answers

It costs $35 per hour to rent a boat at the lake. You also need to pay a $25 fee for safety equipment. You have $200. For how lo

Rama09 [41]

$200 - $25 = $175

175/35= 5

5 hours

3 0

3 years ago

Read 2 more answers

Write 0.624 as a percent

ankoles [38]

62.4% I think Because you move the decimal over 2 places.

7 0

3 years ago

Read 2 more answers

Which functions represent the arithmetic sequence 8, 1.5, –5, –11.5 . . . ? Check all that apply.

tiny-mole [99]

f(n) = -6.5n + 14.5

&

f(1) = 8, f(n+1) = f(n) - 6.5

4 0

2 years ago

Read 2 more answers

Edge is stressful how do you get caught up quick

noname [10]

Work on it’s after school for like a couple of hours

5 0

2 years ago