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2 years ago

Please help!!!!

Mathematics

2 answers:

Anit [1.1K]2 years ago

6 0

Answer:

S.A for Edmentum and Plato

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Licemer1 [7]2 years ago

4 0

Answer:

Step-by-step explanation:

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Evaluate 2x + 5 - 10 when x = 12

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Marcus sleeps 60 hours a week this is 5 times as many hours as he plays chess. How many hours a week does Marcus play chess?

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Can you help me please

IrinaK [193]

Answer:

2. A, the first option

3. A, first option

Step-by-step explanation:

A segment is the part of a line that connects two points. It is the shortest distance between the two points. It has a length.

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I hope this helps!!! Have a wonderful day!!!

7 0

2 years ago

(07.02 LC)

Scorpion4ik [409]

Answer:

3(2x -5)-2(x-5)=3.(2x)-3.(5)-2.x-2.(-5)

=6x-15-2x+10

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2 years ago

The level of nitrogen oxides (NOX) in the exhaust after 50,000 miles or fewer of driving of cars of a particular model varies No

Greeley [361]

Answer:

For a level of 0.0174 or more of nitrogen oxide, the probability of fleet is 0.01.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 0.02 g/mi

Standard Deviation, σ = 0.01 g/mi

Sample size, n = 81

We are given that the distribution of level of nitrogen oxides is a bell shaped distribution that is a normal distribution.

Standard error due to sampling:

$=\dfrac{\sigma}{\sqrt{n}} = \dfrac{0.01}{\sqrt{81}} = 0.0011$

Formula:

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

We have to find the value of x such that the probability is 0.01

P(X > x)

$P( X > x) = P( z > \displaystyle\frac{x - 0.02}{0.0011})=0.01$

$= 1 -P( z \leq \displaystyle\frac{x - 0.02}{0.0011})=0.01$

$=P( z \leq \displaystyle\frac{x - 0.02}{0.0011})=0.99$

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

$\displaystyle\frac{x - 0.02}{0.0011} = -2.326\\\\x = 0.0174$

For a level of 0.0174 or more of nitrogen oxide, the probability of fleet is 0.01.

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2 years ago