3 years ago

Holly spends

Mathematics

1 answer:

maks197457 [2]3 years ago

4 0

Answer:

dsg

Step-by-step explanation:

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Sound City sells the ClearTone-400 satellite car radio. For this radio, historical sales records over the last 100 weeks show 4

Ksivusya [100]

Answer:

See below

Step-by-step explanation:

$\bf \mu(x)$ is the average

$\bf \mu(x)=\frac{4*0+33*1+39*2+12*3+8*4+4*5}{100}=\frac{199}{100}=1.99\;radios/week$

$\bf \sigma^2(x)$ is the variance

$\bf \sigma^2(x)=\frac{4*(0-1.99)^2+33*(1-1.99)^2+39*(2-1.99)^2+12*(3-1.99)^2+8*(4-1.99)^2+4*(5-1.99)^2}{100}=\frac{128.99}{100}=1.2899$

$\bf \sigma(x)$ is the standard deviation

$\bf \sigma(x)=\sqrt{variance}$

$\bf \sigma(x)=\sqrt{1.2899}=1.1357\;radios/week$

7 0

4 years ago

some friends need 100 bows for a project Sara brings 12 bows Angela brings 50 bows and Nora brings 34 bows how many more bows do

Irina-Kira [14]

They need 4 more because 12+50+34=96 96-100 is 4 hope this helps ya

7 0

4 years ago

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Joe and Dave share a sum of money in the ratio 7: 13. What percentage of the money does<br> Joe get?

romanna [79]

Answer:

35%.

Step-by-step explanation:

As a fraction Joe gets 7 / (7+13) = 7/20

7/20 * 100

= 700/20

= 35%.

7 0

3 years ago

Rick is on a bicycle trip. Every 4 days he bikes 230 km. If Rick keeps the same pace for 16 days, how many kilometers will he bi

Scorpion4ik [409]

That's easy just create a proportion

4 0

3 years ago

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How do you solve a line goes through the point(-2,3) and has a slope of -4

lidiya [134]

Answer:

The answer is: y = -4x - 5

Step-by-step explanation:

Use the point slope form:

y - y1 = m(x - x1)

Substitute in the numbers:

y - 3 = -4(x - (-2)

y - 3 = -4(x + 2)

y - 3 = -4x - 8

y = -4x - 5

6 0

3 years ago

Read 2 more answers