+200 x -1 x +1 this is the question Answer now

Help Me Please!

ElenaW [278]

Answer:

−12 ÷ 4 expression best shows the temperature change each hour. Hence Option C is correct

Solution:

Given that, the temperature has been going down at a constant rate.

In 4 hours it went down by 12 degrees.

Now, we have to choose the correct option which best describes about the change in temperature for each hour.

Now, we know that, 12 degrees decreased in 4 hours.

Then, number of degrees decreased in one hour = $\frac{\text {total change in temperature.}}{\text {number of hours}}$

Number of degrees changed in one hour = $\frac{12}{4}$

Because the temperature is decreasing we have to add a (-) symbol before the change in degrees.

So, now, number of degrees changed in 1 hour = $\frac{-12}{4}$

Hence, the correct option is option c.

5 0

4 years ago

The Center for Medicare and Medical Services reported that there were 295,000 appeals for hospitalization and other Part A Medic

Ymorist [56]

Answer:

(a) 0.00605

(b) 0.0403

(c) 0.9536

(d) 0.98809

Step-by-step explanation:

We are given that 40% of first-round appeals were successful (The Wall Street Journal, October 22, 2012) and suppose ten first-round appeals have just been received by a Medicare appeals office.

This situation can be represented through Binomial distribution as;

$P(X=r)= \binom{n}{r}p^{r}(1-p)^{n-r} ; x = 0,1,2,3,....$

where, n = number of trials (samples) taken = 10

r = number of success

p = probability of success which in our question is % of first-round

appeals that were successful, i.e.; 40%

So, here X ~ $Binom(n=10,p=0.40)$

(a) Probability that none of the appeals will be successful = P(X = 0)

P(X = 0) = $\binom{10}{0}0.40^{0}(1-0.40)^{10-0}$

= $1*0.6^{10}$ = 0.00605

(b) Probability that exactly one of the appeals will be successful = P(X = 1)

P(X = 1) = $\binom{10}{1}0.40^{1}(1-0.40)^{10-1}$

= $10*0.4^{1} *0.6^{10-1}$ = 0.0403

(c) Probability that at least two of the appeals will be successful = P(X>=2)

P(X >= 2) = 1 - P(X = 0) - P(X = 1)

= 1 - $\binom{10}{0}0.40^{0}(1-0.40)^{10-0} - \binom{10}{1}0.40^{1}(1-0.40)^{10-1}$

= 1 - 0.00605 - 0.0403 = 0.9536

(d) Probability that more than half of the appeals will be successful = P(X > 0.5)

For this probability we will convert our distribution into normal such that;

X ~ N( $\mu = n*p=4,\sigma^{2}= n*p*q = 2.4$ )

and standard normal z has distribution as;

Z = $\frac{X-\mu}{\sigma}$ ~ N(0,1)

P(X > 0.5) = P( $\frac{X-\mu}{\sigma}$ > $\frac{0.5-4}{\sqrt{2.4} }$ ) = P(Z > -2.26) = P(Z < 2.26) = 0.98809

3 0

3 years ago

Evaluate 19 - (-13). The solution is.

alex41 [277]

Answer:

32

Step-by-step explanation:

19-(-13)

=19+13 (after removing the brackets, the minus sign becomes positive)

=32

7 0

3 years ago

Read 2 more answers

PLEASE HELP ME I REALLY NEED YOUR HELP

ddd [48]

Answer:

$26 \times 41$

Step-by-step explanation:

Answer is 1066

6 0

3 years ago

Find the measures of the interior angles of the triangle. A B C

Mars2501 [29]

Answer:

A=45 B=110 C=25

Step-by-step explanation:

Please mark as brainliest. I'm happy to help

8 0

3 years ago

Read 2 more answers