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Elis [28]
2 years ago
6

I’ll give the correct answer brainliest. Happy Halloween!

Mathematics
2 answers:
denpristay [2]2 years ago
6 0

Answer:

c

Step-by-step explanation:

When the number of volunteers(x axis) is 10, the number of houses built is 1.

divide 600 people /10 people per house= 60 houses

BlackZzzverrR [31]2 years ago
3 0

Answer:

B. 6

Step-by-step explanation:

have a good rest of ur day :)

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What is the density of a sample with a mass of 5250g and a volume of 4.5mL?
just olya [345]

Step-by-step explanation:

Density=5250/4.5=1166.66 g/ml

7 0
3 years ago
A random sample of 100 automobile owners in thestate of Virginia shows that an automobile is driven onaverage 23,500 kilometers
Anastaziya [24]

Answer:

a) 22497.7 < μ< 24502.3

b)  With 99% confidence the possible error will not exceed 1002.3

Step-by-step explanation:

Given that:

Mean (μ) = 23500 kilometers per year

Standard deviation (σ) = 3900 kilometers

Confidence level (c) = 99% = 0.99

number of samples (n) = 100

a) α = 1 - c = 1 - 0.99 = 0.01

\frac{\alpha }{2} =\frac{0.01}{2}=0.005\\ z_{\frac{\alpha }{2}}=z_{0.005}=2.57

Using normal distribution table, z_{0.005 is the z value of 1 - 0.005 = 0.995 of the area to the right which is 2.57.

The margin of error (e) is given as:

e= z_{0.005}\frac{\sigma}{\sqrt{n} }  = 2.57*\frac{3900}{\sqrt{100} } =1002.3

The 99% confidence interval = (μ - e, μ + e) = (23500 - 1002.3, 23500 + 1002.3) =  (22497.7, 24502.3)

Confidence interval = 22497.7 < μ< 24502.3

b) With 99% confidence the possible error will not exceed 1002.3

5 0
3 years ago
Original price:$29.99;markdown: 33 1/3%<br> Find the retail price
-Dominant- [34]
33.3%, move the decimal to the left twice to make it easier. then multiply 29.99 by .333. take that and subtract it from 29.99. I got 20, I'm not sure if that's right though
3 0
3 years ago
Read 2 more answers
The population of a town grows at a rate proportional to the population present at time t. The initial population of 500 increas
Mazyrski [523]

Answer:

The population in 40 years will be 1220.

Step-by-step explanation:

The population of a town grows at a rate proportional to the population present at time t.

This means that:

P(t) = P(0)e^{rt}

In which P(t) is the population after t years, P(0) is the initial population and r is the growth rate.

The initial population of 500 increases by 25% in 10 years.

This means that P(0) = 500, P(10) = 1.25*500 = 625

We apply this to the equation and find t.

P(t) = P(0)e^{rt}

625 = 500e^{10r}

e^{10r} = \frac{625}{500}

e^{10r} = 1.25

Applying ln to both sides

\ln{e^{10r}} = \ln{1.25}

10r = \ln{1.25}

r = \frac{\ln{1.25}}{10}

r = 0.0223

So

P(t) = 500e^{0.0223t}

What will be the population in 40 years

This is P(40).

P(t) = 500e^{0.0223t}

P(40) = 500e^{0.0223*40} = 1220

The population in 40 years will be 1220.

7 0
3 years ago
The cost our summer school trip is $17 per students plus a $175 fee for the bus. 1) Write a linear equation for the total cost o
scZoUnD [109]

Answer:

Step-by-step explanation:

1)         17x + 175 = y

2)        17(28) + 175 = y

           476 + 175 = y

           651 = y

           Cost for bus and 28 students is $651

3)        889 - 175 = 714

           714/ 17 = 42

           42 students attempted the trip

7 0
3 years ago
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