Answer:
Emma is not correct. The correct ratio is 7:8.
Step-by-step explanation:
The ratio of boys to girls is 35:40, and if you simplify this you do not get 3:4 but 7:8.
Hope this helps!
Answer: 196πcm²
Given
Diameter = 14
Radius = d/2
= 14/2
= 7
Surface area = 4πr²
Take π = 22/7
= 4×22/7×7×7
= 616 cm²
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Answer:
B. X squared is -3 times -3, which is equal to 9.
Step-by-step explanation:
Answer:
sinA = 3/5 cosA = 4/5 tanA =3/4
Step-by-step explanation:
SinA = Opposite/Hypotenuse
CosA= Adjacent/Hypotenuse
TanA = Opposite/Hypotenuse
soh, cah, toa.
Answer:
0.9936 is the probability that the student will fail.
Step-by-step explanation:
We are given the following information:
We treat adult guessing correct answer as a success.
P(guess correct answer) = 0.2
Then the number of correct guesses follows a binomial distribution, where
where n is the total number of observations, x is the number of success, p is the probability of success.
Now, we are given n = 10
The student needs atleast 6 correct answer to pass the test. We have to calculate the probability that the student will fail.
We have to evaluate:
0.9936 is the probability that the student will fail.