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3 years ago

Help me fast i need help a lot :3

Mathematics

1 answer:

Shtirlitz [24]3 years ago

8 0

the third option

because 1/3 is not equal to three

where as if we replace the x with one in all the other we would find that the equation is correct.

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What is the probability that a randomly selected Californian age 18 to 64 exercises for at least 150 minutes per week? Illustrat

Pavlova-9 [17]

Answer:

Step-by-step explanation:

This is a normal distribution question with

Mean = 153

Standard Deviation= 10

Since we know that score

$Z_{score}=\frac{x- \mu}{ \sigma }$

P(x > 150.0)=?

The z-score at x = 150.0 is,

$Z = \frac{150-153}{10} \\\\Z=-0.3$

This implies that

P(x > 150.0) = P(z > -0.3)

= 1 - P(z < -0.3) = 1 - 0.3820885778110474

P(x > 150) = 0.6179

8 0

3 years ago

Greg is driving a remote control car at a constant speed. He starts the timer when the cat is 5ft away after 2 seconds the car i

Pepsi [2]

Greg is driving a remote control car at a constant speed. He starts the timer when the car is 5ft away after 2 seconds the car is 35ft away

Let x be the seconds and y be the feet the car is away

In 0 seconds the car is 5ft away. (0, 5)

In 2 second the car is 35 ft away (2, 35)

Question says constant speed

so we find linear equation y=mx+b

use the points (0,5) and (2,35)

slope $m = \frac{y_2-y_1}{x_2-x_1} = \frac{35-5}{2-0}= 15$

y intercept is 5

so equation becomes y = 15x + 5

to find the distance the car has traveled after 10 secs

We plug in 10 for x and find out y

y = 15(10) + 5= 150+5= 155

the distance the car has traveled after 10 secs is 155 feet

3 0

3 years ago

Find the sum of the finite geometric sequence

lions [1.4K]

Answer:

Step-by-step explanation:

Use the geometric sum formula for in infinite sum. 20 terms of this basic formula is close enough The 20th term is 8.6 * 10^-10 which means this goes out to a number with 9 zeros after the decimal and before the 8.

Put another way, the tenth number of this series is the only one affected.

When you use a spreadsheet, it seems to know that the answer is 3/2 as the solution to the sum.

Solution.

Sum = a / (1 - r)

a = 1

r = 1/3

Sum = 1 / (1 - 1/3)

Sum = 1 // 2/3

sum = 3/2

Now you can worry about the 30.

30 * sum(1/3)^n = 30* 3/2 = 45

If there is something you want more information on, leave a note.

6 0

4 years ago

An electronics store sends an email survey to all customers who bought tablets.

Fudgin [204]

I think you forgot to add the rest of the question

6 0

3 years ago

PLZZ HELPP IM FAILLING THIS CLASS

Nataly_w [17]

Answer:

Well thats not good

Step-by-step explanation:

is this a test? i like tests.

6 0

3 years ago