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hichkok12 [17]
3 years ago
13

The sum of two numbers is 191. One number is 17 less than the other number. What are the two numbers?

Mathematics
1 answer:
AnnZ [28]3 years ago
4 0

Answer:

The numbers are 24 and 41

Step-by-step explanation:

Hope This Helps!!

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STruggling. pls help
Ludmilka [50]
The answer is 6! Hope this helps
4 0
3 years ago
In a sample of 42 water specimens taken from a construction site, 26 contained detectable levels of lead. Construct a 95% conden
S_A_V [24]

Answer:

The 95% confidence interval for the proportion of water specimens that contain detectable levels of lead is (0.472,0.766).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

In a sample of 42 water specimens taken from a construction site, 26 contained detectable levels of lead.

This means that n = 42, \pi = \frac{26}{42} = 0.619

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.619 - 1.96\sqrt{\frac{0.619*0.381}{42}} = 0.472

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.619 + 1.96\sqrt{\frac{0.619*0.381}{42}} = 0.766

The 95% confidence interval for the proportion of water specimens that contain detectable levels of lead is (0.472,0.766).

4 0
3 years ago
Find the volume to the nearest whole number
ella [17]

Answer:

6,861 cm³

Step-by-step explanation:

First, find the volume of of the cylinder, the formula fr a cylinder is π·r²·h

π·9²·15≈3,817

Then, find the volume of the cone, 1/3(πr²)(h)

π·9²·12≈3,054

Finally, add them together to get ≈6,861 cm³

5 0
4 years ago
I need Help please!:D
ikadub [295]

Answer:

70

Step-by-step explanation:

42/6=7. 42000/600=70. Add the zeroes!

4 0
3 years ago
Read 2 more answers
Factor<br> x ^ 3 + 2x ^ 2 – 5x - 10 = 0
aleksklad [387]

Answer:

Step-by-step explanation:

When you have four terms and 3rd degree equation (the highest power is 3) you will want to try to "factor by grouping"

Group together two terms, watch out for the negative signs!

x^3 + 2x^2-5x-10=0

(x^3 + 2x^2) - (5x+10)=0

Find a common factor in each group and factor it out. You're hoping that what is left in the parenthesis is the same in both cases.

x^2(x+2)-5(x+2)=0

Now you can factor out that (x+2) because it is both terms.

x^2(x + 2) - 5(x + 2)=0

~~~~ ~~~~

Pull these out.

What will be left is the x^2 and the - 5 (dont lose that - in front of the 5)

(x + 2)(x^2 - 5) = 0

If all you have to do is factor, then you're done. It is factored. But if you have to "solve" also, then put x+2=0 and x^2-5=0 and solve.

x = -2 and x = +- sqrt5

7 0
2 years ago
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