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3 years ago

PlEASE HELP ME AND I WILL GiVE U BRAINLIEST

Mathematics

1 answer:

Ghella [55]3 years ago

6 0

Answer:

-1!

Step-by-step explanation:

If you plot the points on a graph, use RISE/RUN! You will see that you go up 5, left 5. Since you went left, it's a negative slope. 5/5 is 1, so the answer is -1! I really hope this makes sense, but if you need help, Im here!

I included a graph if you need to see it!

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Five students ran in their schools field day competition. Chris beat Allie by 7 yards but he was 2 yards behind Elena. Derrick f

anzhelika [568]

From last place to first BART was last the it was DERRICK, ALLIE, and CHRIS and ELENA in first. I hope this helps you!

4 0

4 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

A bag contains 8 green marbles, 5 white marbles, and 2 red marbles.

hodyreva [135]

•in fraction form the answer is 2/15
•in percentage form the answer is 13.33333333...%

the way to figure this out is to add all the numbers up and divide it by the number of red marbles :)

6 0

3 years ago

In which direction must the graph of Rx) = 7% be shifted to produce the graph of g(x) = 7% + 7?

joja [24]

Answer:

B. Up

Step-by-step explanation:

If you alter a function by adding or subtracting a constant to the end of the expression, then the graph will slide up (down if subtracting) If you alter the x value by altering the expression in close to the x with addition or subtraction the graph will slide left or right.

Vertical translations (sliding up or down) go up when adding and down when subtracting as you would expect it to.

Horizontal translations are the oppoof what you might expect. A (x-h) will shift the graph right, while a (x+k) will shift the graph left.

The answer to your question is UP.

5 0

2 years ago

An equation is shown below: 2(3x − 5) = 1 Which of the following correctly shows the first two steps to solve this equation? Ste

Crazy boy [7]

Answer:

A: Step 1: 6x − 10 = 1; Step 2: 6x = 11

Step-by-step explanation:

First: remove parentheses by multiplying factors.

6x - 10 = 1

Second: Move the constants to the right side of the equation

6x = 1 + 10

6x = 11

5 0

3 years ago

Read 2 more answers