2 years ago

Need help,plzzzzzzzzzzz

Mathematics

1 answer:

NNADVOKAT [17]2 years ago

3 0

Answer: Unit rate = $0.7 for 1 orange

Answers = B,D,E I hope this helps!

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If MO = 7x - 4, and NO = 6x, what is the length of line MN?

Gennadij [26K]

Answer:

13x-4

Step-by-step explanation:

8 0

3 years ago

Suppose the weights of the Boxers at this club are Normally distributed with a mean of 166 pounds and a standard deviation of 5.

lesya [120]

Answer:

0.1994 is the required probability.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 166 pounds

Standard Deviation, σ = 5.3 pounds

Sample size, n = 20

We are given that the distribution of weights is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Standard error due to sampling =

$=\dfrac{\sigma}{\sqrt{n}} = \dfrac{5.3}{\sqrt{20}} = 1.1851$

P(sample of 20 boxers is more than 167 pounds)

$P( x > 167) = P( z > \displaystyle\frac{167 - 166}{1.1851}) = P(z > 0.8438)$

$= 1 - P(z \leq 0.8438)$

Calculation the value from standard normal z table, we have,

$P(x > 167) = 1 - 0.8006= 0.1994 = 19.94\%$

0.1994 is the probability that the mean weight of a random sample of 20 boxers is more than 167 pounds

3 0

2 years ago

The length of a lap is 20 meters. if lisa wants to swim 800 meters this week how many laps must she swim

marishachu [46]

40 laps/////////////

5 0

3 years ago

W 45 U 30 V wwtuw X +45 Find VW

hodyreva [135]

Answer:

VW=WU+UV

VW = 45+30

VW = 75

I hope I helped you^_^

6 0

2 years ago

Find B: 9.38 88 15.83 4

mario62 [17]

Answer:

by using Pythagoras law

h²=p²+b²

13²=9²+b²

169-81=b²

b=√88=2√22m is your answer

4 0

3 years ago