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3 years ago

11

Semaj is reading Harry Potter and the Chamber of Secrets. He is currently on page 319. After reading for 40 minutes he is on pag

e 339.

2 answers:

ira [324]3 years ago

6 0

20.
319+20 is 339. Have a good day

asambeis [7]3 years ago

4 0

Answer: 319+20=339

Step-by-step explanation:

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The top says for the first box : Part A Explain how Mrs. Soto could apply the

Aleksandr-060686 [28]

Answer:

The given theorem proves that the door is not a rectangle right now since, the door came out of shape, it can be proved by the Pythagorean theorem. If the length is set to a certain shape, and the width is set to a certain shape, and drawn to diagonals. If solved by the Pythagorean Theorem, if the length of two diagonals are similar then and only then the door would be a rectangle.

Hope this helps!

6 0

3 years ago

The rates of on-time flights for commercial jets are continuously tracked by the U.S. Department of Transportation. Recently, So

tatyana61 [14]

Answer:

The probability that at least 13 flights arrive late is 2.5196 $\times 10^{-6}$ .

Step-by-step explanation:

We are given that Southwest Air had the best rate with 80 % of its flights arriving on time.

A test is conducted by randomly selecting 18 Southwest flights and observing whether they arrive on time.

The above situation can be represented through binomial distribution;

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

where, n = number of trials (samples) taken = 18 Southwest flights

r = number of success = at least 13 flights arrive late

p = probability of success which in our question is probability that

flights arrive late, i.e. p = 1 - 0.80 = 20%

Let X = <u><em>Number of flights that arrive late</em></u>.

So, X ~ Binom(n = 18, p = 0.20)

Now, the probability that at least 13 flights arrive late is given by = P(X $\geq$ 13)

P(X $\geq$ 13) = P(X = 13) + P(X = 14) + P(X = 15) + P(X = 16) + P(X = 17) + P(X = 18)

= $\binom{18}{13}\times 0.20^{13} \times (1-0.20)^{18-13}+ \binom{18}{14}\times 0.20^{14} \times (1-0.20)^{18-14}+ \binom{18}{15}\times 0.20^{15} \times (1-0.20)^{18-15}+ \binom{18}{16}\times 0.20^{16} \times (1-0.20)^{18-16}+ \binom{18}{17}\times 0.20^{17} \times (1-0.20)^{18-17}+ \binom{18}{18}\times 0.20^{18} \times (1-0.20)^{18-18}$

= $\binom{18}{13}\times 0.20^{13} \times 0.80^{5}+ \binom{18}{14}\times 0.20^{14} \times 0.80^{4}+ \binom{18}{15}\times 0.20^{15} \times 0.80^{3}+ \binom{18}{16}\times 0.20^{16} \times 0.80^{2}+ \binom{18}{17}\times 0.20^{17} \times 0.80^{1}+ \binom{18}{18}\times 0.20^{18} \times 0.80^{0}$

= 2.5196 $\times 10^{-6}$ .

7 0

3 years ago

$6,700 is invested in an account earning 8. 3% interest (APR), compounded daily. Write a function showing the value of the accou

aliina [53]

Answer:

A = $6,700(1 +0.0865^t)

APY = 8.65%

Step-by-step explanation:

Daily compounding of interest results in an annual growth factor of ...

gf = (1 +r/365)^365 . . . . for APR = r

Your growth factor is ...

gf = (1 +0.083/365)^365 ≈ 1.086532

Then the growth rate (APY) is ...

APY = gf -1 ≈ 8.65%

The account value is multiplied by the growth factor each year, so after t years will be ...

A = P(1 +APY)^t

A = $6,700(1 +0.0865)^t . . . . . . . 0.0865 is the annual growth rate

7 0

3 years ago

F(x)=5-3x For x=1 And x=3

galben [10]

The answer would be -4

6 0

3 years ago

Need help fast hs geometry

harina [27]

Measure of angle C = 100°
Measure of angle A = 40°
We know, sum of all angles of a triangle is 180°.
Therefore, the measure of angle B

= [180 - (100 + 40)]° = 40°

When two angles of a triangle are equal, then the triangle is isosceles.
Here, the measure of angle A and B are equal, i.e., 40°
So, ∆ABC is an isosceles triangle.

<u>Answers:</u>

<u>4</u><u>0</u><u>°</u>
<u>Yes</u>

Hope you could get an idea from here.

Doubt clarification - use comment section.

6 0

2 years ago