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3 years ago

Identify the wave with the longest wavelength (measured in kilometers):

Mathematics

1 answer:

lina2011 [118]3 years ago

4 0

Answer:

Radio Waves

Step-by-step explanation:

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. A random sample of 250 working adults found that 37% access the internet at work, 44% access the internet at home, and 21% acc

3241004551 [841]

Answer:

0.6 is the required probability.

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 250

Probability of accessing internet at work = 37%

$P(W)=0.37$

Probability of accessing internet at home = 44%

$P(H)=0.44$

Probability of accessing internet at work and home = 21%

$P(W\cap H)=0.21$

We have to evaluate the probability that a person in this sample accesses the internet at home or at work.

$P(H\cup W) = P(H) + P(W) - P(W\cap H)\\P(W\cup H) = 0.37 + 0.44-0.21\\P(H\cup W) = 0.6$

Thus, 0.6 is the probability that a person in this sample accesses the internet at home or at work

8 0

3 years ago

In a certain state's lottery, 40 balls numbered 1 through 40 are placed in a machine and 7 of them are drawn at random. If the 7

DENIUS [597]

Answer:

Step-by-step explanation:

From the given information;

The total number of ways to choose 7 number = $^{40}C_7$

Number of ways to choose 7 correct numbers = $^{7}C_7$

∴

The probability P( win $2500000) is;

$= \dfrac{^{7}C_7}{^{40}C_7}$

$= \dfrac{\dfrac{7!}{7!(7-7)!} }{\dfrac{40!}{7!(40-7)!}}$

$= \dfrac{1 }{\dfrac{40!}{7!(40-7)!}}$

$= \dfrac{1 }{\dfrac{40!}{7!(33)!}}$

$= \dfrac{1 }{18643560}$

= 5.36 × 10⁻⁸

The probability P( win $10000) is:

$= \dfrac{^7C_5 \times ^{33} C_2}{^{40}C_7}$

$= \dfrac{ \dfrac{7!}{5!(7-5)!} \times \dfrac{33!}{2!(33-2)!} }{ \dfrac{40!}{7!(40-7)!}}$

$= \dfrac{ \dfrac{7!}{5!(2)!} \times \dfrac{33!}{2!(31)!} }{ \dfrac{40!}{7!(33)!}}$

$= \dfrac{ 21 \times 528 }{ 18643560}$

$= \dfrac{ 11088 }{ 18643560}$

$=\dfrac{462}{776815}$

= 5.95 × 10⁻⁴

8 0

3 years ago

Please help!!!!!!!!!!!

Arisa [49]

Answer:

The ordered pair (15, 12) means that 15 pounds of beans cost $12.

Step-by-step explanation:

Ordered pairs are in the format of (x,y). The first number represents a point's position on the x-axis and the second represents a point's position on the y-axis. Also note that in this graph, the x-axis represents the weight of beans in pounds and the y-axis represents the cost of beans.

Knowing this, (15,12) means that 15 pounds of beans must cost $12.

5 0

3 years ago

Read 2 more answers

3 on side of square root -27/125 help

frez [133]

Assuming that you mean

$\sqrt[3]{-\dfrac{27}{125}}$

we have

$\sqrt[3]{-\dfrac{27}{125}} = -\dfrac{\sqrt[3]{27}}{\sqrt[3]{125}} = -\dfrac{3}{5}$

4 0

4 years ago

Which relationship has a zero slope?

deff fn [24]

Answer:

B. A two column table with five rows. The first column, x, has the entries, negative 3, negative 1, 1, 3. The second column, y, has the entries, 3, 1, negative 1, negative 3.

7 0

3 years ago