I need help Plzz & Thank You .

Find the distance between each pair of integers. 9 and –1

Norma-Jean [14]

Answer: the distance is 10

Step-by-step explanation: its 10 cause like if you draw a number line and label it and then go backwards till you get to -1 it will be 10

3 0

3 years ago

assume that when adults with smartphones are randomly selected 15 use them in meetings or classes if 15 adult smartphones are ra

Tanzania [10]

Answer:

The probability that at least 4 of them use their smartphones is 0.1773.

Step-by-step explanation:

We are given that when adults with smartphones are randomly selected 15% use them in meetings or classes.

Also, 15 adult smartphones are randomly selected.

Let X = <em>Number of adults who use their smartphones</em>

The above situation can be represented through the binomial distribution;

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

where, n = number of trials (samples) taken = 15 adult smartphones

r = number of success = at least 4

p = probability of success which in our question is the % of adults

who use them in meetings or classes, i.e. 15%.

So, X ~ Binom(n = 15, p = 0.15)

Now, the probability that at least 4 of them use their smartphones is given by = P(X $\geq$ 4)

P(X $\geq$ 4) = 1 - P(X = 0) - P(X = 1) - P(X = 2) - P(X = 3)

= $1- \binom{15}{0}\times 0.15^{0} \times (1-0.15)^{15-0}-\binom{15}{1}\times 0.15^{1} \times (1-0.15)^{15-1}-\binom{15}{2}\times 0.15^{2} \times (1-0.15)^{15-2}-\binom{15}{3}\times 0.15^{3} \times (1-0.15)^{15-3}$

= $1- (1\times 1\times 0.85^{15})-(15\times 0.15^{1} \times 0.85^{14})-(105 \times 0.15^{2} \times 0.85^{13})-(455 \times 0.15^{3} \times 0.85^{12})$

= <u>0.1773</u>

3 0

3 years ago

Diego is 59.5 inches tall. His brother is 40.125 inches tall. How much taller than his brother is Diego?

Paha777 [63]

Answer:

Hello!!

Diego is 59.5 inches tall. His brother is 40.125 inches tall. How much taller than his brother is Diego?

Diego is 19.375 inches taller than his brother.

Step-by-step explanation:

$59.5-40.125=19.375$

Hope this helps!!

6 0

2 years ago

Is 100 in greater than 3yd 1ft

wolverine [178]

1 yard = 36 inches

3 * 36 = 108

1 foot = 12 inches

108 + 12 = 120

So 3 yards and 1 foot is equal to 120 inches.

120 is greater than 100 so 3 yards and 1 foot is greater than 100 inches.

3 0

3 years ago

Read 2 more answers

Travis recieved a box of chocolate. He wants to eat one row of chocolate a day.there are 4 chocolates in a row .how many chocola

Korolek [52]

Answer:

24

Step-by-step explanation:

if he eats 4 each day for 6 days, he will eat 24

4 × 6 = 24

3 0

2 years ago