All categories

3 years ago

Jeff had 5 apples but ate 2 Kyle had 3 apples but ate 1 kelsea has 8 apples but ate 4

Mathematics

2 answers:

MA_775_DIABLO [31]3 years ago

8 0

Answer:

jeff 3 apples, kyle 2 apples, kelsea 4 apples

total apples left = 9 apples

total apples eaten = 7 apples

total apples = 16 apples

Step-by-step explanation:

vekshin13 years ago

7 0

Answer:

jeff has 3 apples left. kyle has 2 apples left. kelsea had 4 apples left.

Step-by-step explanation:

5-2=3

3-1=2

8-4=4

You might be interested in

Evaluate 2 ∙ (8 + 4) using the steps of order of operations.

Natalka [10]

Step-by-step explanation:

Follow PEMDAS

$2 ∙ (8 + 4)$

P: Parentheses

E : Exponents

M: Multiplication

D: Division

A: Addition

S: Subtraction

$2 \cdot \: (12) \\ = 2 \times 12 \\ 24$

Question 2

$15 + 6 \times 3 \\ 15 + (6 \times 3) \\ 15 + 18 \\ = 33$

7 0

3 years ago

Read 2 more answers

Jori has 7 boxes of books, with each box holding the same number of books. He has 126 books in all. How many books are there per

nika2105 [10]

126/7 = 18

18 books per box

7 0

3 years ago

Bianca bought 3 pounds of hard candies at the candy store if each pound of hard candy cost $2.90 and she paid with a twenty doll

Ksivusya [100]

Answer:

11.30$

Step-by-step explanation:

8 0

3 years ago

Which statement is not true for a binomial distribution with n = 15 and p = 1/20 ? a) The standard deviation is 0.8441 b) The nu

malfutka [58]

Answer:

d) The highest probability occurs when x equals 0.7500

Step-by-step explanation:

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability, given by the following formula:

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

The expected value of the binomial distribution is:

$E(X) = np$

The standard deviation of the binomial distribution is:

$\sqrt{V(X)} = \sqrt{np(1-p)}$

In this problem, we have that:

$n = 15, p = \frac{1}{20}$

a) The standard deviation is 0.8441

$\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{15*0.05*0.95} = 0.8441$

This is correct

b) The number of trials is equal to 15

n is the number of trials and $n = 15$ . So this option is correct.

c) The probability that x equals 1 is 0.3658

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 1) = C_{15,1}.(0.05)^{1}.(0.95)^{14} = 0.3658$

This option is correct.

d) The highest probability occurs when x equals 0.7500

False. The number of sucesses is a discrete number, that is, 0, 1, 2,...,15. P(X = 0.75), for example, does not exist.

e) The mean equals 0.7500

$E(X) = np = 15*0.05 = 0.75$

This option is correct.

f) None of the above

d is false

3 0

3 years ago

12. A road race is 15 kilometers long. After the starting line, there are water stations every

zlopas [31]

Answer:

Step-by-step explanation:

Given

there is 1 water station at every 0.3 KM

If there are n water stations at every 0.3 KM

then KM covered by them = n*0.3 = 0.3n

given that total KM covered is 15 km

Thus,

0.3n = 15

=> n = 15/0.3 = 50

Thus, there are 50 water stations.

7 0

3 years ago