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asambeis [7]
3 years ago
15

Heyyo, can I get some help?

Mathematics
1 answer:
Sonja [21]3 years ago
7 0

Answer:

C) Square half of \frac{2}{5} and add to both sides; \frac{1}{25}

Step-by-step explanation:

x² + \frac{2}{5}x + c

c = (\frac{1}{2} × \frac{2}{5})² = (\frac{1}{5})² = \frac{1}{25}

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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.

5 0
3 years ago
Math help picture below
alex41 [277]
The figure is a cuboid.

Hence, parallel edges to AH are BD, PY, and MK.

Hence, the answer is A and B.
6 0
3 years ago
A square with sides of length 5 is positioned inside a square with sides of length 7. What is
kow [346]

Answer: 24cm²

Step-by-step explanation:

Let square with length 5cm be represented with A, and square with 7cm be represented with B.

Area of a square is L²

Square A will have an area of 5² = 25cm²

Square B will have an area of 7² = 49cm²

Total area between the two squares will be = Area of Square (B - A)

i.e.

Total Area = 49cm² - 25cm² = 24cm²

3 0
3 years ago
Can someone pls help with this? i’ll give brainliest :)
raketka [301]

Answer:

D (I think)

Step-by-step explanation:

I used a right triangle calculator and that was the answer

Below is the process the calculator did, hope it helps.

c = \sqrt{a^{2} +b^{2}

\sqrt{12^{2} + 9^{2} } = 15

6 0
3 years ago
Please help, Multiple choice
Leni [432]

Answer: A

Step-by-step explanation: when the ratios of apples to plums (9:15) is simplified, it is 3:5

7 0
3 years ago
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