All categories

3 years ago

If a car changes its velocity from 32 km/hr to 54 km/hr in 8.0 seconds, what is its acceleration?

Mathematics

2 answers:

densk [106]3 years ago

6 0

2.8 km/hr/sec, B is the answer

Greeley [361]3 years ago

3 0

The correct answer is 2.8 i know this is correct because i have already turned it in.

You might be interested in

Study the equation.<br> x² + 6x = - 4

Zinaida [17]

Answer:

x = -3+√5, -3-√5 (exact roots)

or x = -0.76, -5.24 to the nearest hundredth.

Step-by-step explanation:

x² + 6x = - 4

Completing the square:

(x + 3)^2 - 9 = -4

(x + 3)^2 = 5

x + 3 = +/-√5

x = - 3 + √5, - 3 - √5

5 0

3 years ago

Fill in the blanks below to make a true statement. In a binomial experiment with n trials and probability of success p, if np (1

Sergeu [11.5K]

Answer:

$\mu_{x}=np$

$\sigma^2_{X}=np(1-p)$

Step-by-step explanation:

∵ When x is a random variable having distribution B(n, p), then for sufficiently large value of n, the following random variable has a standard normal distribution,

$\frac{x-\mu}{\sigma}\sim N(0,1)$

Where,

$\mu=np$

$\sigma^2=np(1-p)$

Here the variable X has a binomial distribution,

Such that, np (1 - p) ≥ 10 ⇒ n is sufficiently large.

Where, n is the total numbers of trials, p is success in each trials,

So, the mean of variable X is,

$\mu_{X} = np$

And, variance of variable X is,

$\sigma^2{X}=np(1-p)$

3 0

3 years ago

Please answer please

Murrr4er [49]

<BAC = <DEC = 30°

<BCA = <DCE = 70°

<CDE (or m<D) = 180° - <DEC - <DCE

<CDE = 180° - 30° - 70°

<CDE = 80°

The number that belongs in the green box is 80

3 0

3 years ago

Y is greater than or equal to -×-5

Katen [24]

Answer:

Y<u>></u>-x-5

Step-by-step explanation:

6 0

3 years ago

A movie theatre has 26 rows of seats.There are 18 seats in each row.How many seats are there in all?

lawyer [7]

468 seats is the answer.

26 x 18

or

13 x 2 x 9 x 2

both equal 468

5 0

3 years ago