Find the perimeter of the figure to the nearest hundredth.

Mathematics

1 answer:

postnew [5]3 years ago

5 0

Answer:

30 ft.

Step-by-step explanation:

1. We start by looking at the 12. it goes the whole length of both sides of your figure. So, we can skip adding those 3's, and add two 12's.

2. So far, you have got 24 ft. Now, we still must add the width in so you add 6 more to that 24 (6 because 3 ft. on each side-you add). Your final answer is 30 ft. Hope this helps :)

You might be interested in

You have a bag of six marbles five are red and one is blue if you pick one without looking what color will you most likely get w

alekssr [168]

You are most likely to pick up a red because the quantity is more and a blue marble can be anywhere

7 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 = Number of adults who use their smartphones

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)

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