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2 years ago

Determine which lines are parallel

Mathematics

2 answers:

pashok25 [27]2 years ago

7 0

It’s a and c I’m pretty sure

ella [17]2 years ago

3 0

Answer:

a and c i think.

Step-by-step explanation:

You might be interested in

Convert 5.86 to a percent. A. 586% B. 58.6% C. 5.86% D. 0.0586%

beks73 [17]

Answer:

586%

Step-by-step explanation:

5.86 times 100 to change to a percent

586 %

7 0

3 years ago

The lifetime of a certain type of battery is normally distributed with mean value 15 hours and standard deviation 1 hour. There

KIM [24]

Answer:

If the lifetime of batteries in the packet is 40.83 hours or more then, it exceeds for 5% of all packages.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 15

Standard Deviation, σ = 1

Sample size = 4

Total lifetime of 4 batteries = 40 hours

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

Formula:

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

Standard error due to sampling:

$\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{1}{\sqrt4} = 0.5$

We have to find the value of x such that the probability is 0.05

P(X > x) = 0.05

$P( X > x) = P( z > \displaystyle\frac{x - 40}{0.5})=0.05$

$= 1 -P( z \leq \displaystyle\frac{x - 40}{0.5})=0.05$

$=P( z \leq \displaystyle\frac{x - 40}{0.5})=0.95$

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

$\displaystyle\frac{x - 40}{0.5} = 1.64\\x = 40.825 \approx 40.83$

Hence, if the lifetime of batteries in the packet is 40.83 hours or more then, it exceeds for 5% of all packages.

8 0

3 years ago

What is f(+3) if f(x) = 5 x

Damm [24]

Answer:

$f(x) = 5x \\ f(3) = 5(3) = \boxed{15}$

<h3><u>f(</u><u>3</u><u>) =15</u> is the right answer.</h3>

4 0

2 years ago

Review Word Problems ?

melomori [17]

1.) 2=50%

2.) 25% of 30,000= 7500

4 0

3 years ago

5x + y = 11<br>4x + y = 9

erma4kov [3.2K]

The first one is -5
The second one is -4

4 0

3 years ago