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2 years ago

Can someone pls help

Mathematics

1 answer:

kolbaska11 [484]2 years ago

3 0

Answer:

option c

Step-by-step explanation:

we need to divide the amount of money by no. of friends

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Question 9 Of 1000 randomly selected cases of lung cancer, 841 resulted in death within 10 years. Construct a 95% two-sided conf

givi [52]

Answer:

0.818335 ≤ p ≤ 0.86366

Step-by-step explanation:

Given that:

Sample size (n) = 1000

Positive lung cancer = 841

n(p) = 841, p(p) = 841/1000 = 0.841

n(1 - p) = 1000 - 841 = 159

1 - p = 0.159

95% confidence interval

For a 95% confidence interval : z = 1.96

P ± z√p(1-p) / n

0.841 ± 1.96 * √0.841(0.159) / 1000

0.841 - (1.96 * 0.0115636) = 0.818335344

0.841 + (1.96 * 0.0115636) = 0.863664656

0.818335 ≤ p ≤ 0.86366

4 0

3 years ago

Solve7+x/4=5 For x please show steps

seraphim [82]

7 + x/4 = 5 (common denominator is 4)

4(7+x/4) = 4 x 5 (distribute the 4 though parenthesis)

4 *7 +4x/4 = 4 x 5

4 * 7 + x = 4 x 5

28 + x = 4 x 5

28 + x = 20 (subtract the 28)

x = 20 - 28

x = -8

8 0

3 years ago

Read 2 more answers

Find f (x )if f apostrophe apostrophe (x )equals x to the power of negative 2 end exponent comma space x greater than 0 comma sp

viva [34]

Step-by-step explanation:

Given $g'(x) = g^{-2}, x> 0\ g(1) = 0 \ and \ g(2) = 0$

To get g(x), we will have to integrate g'(x)

$g(x) = \int\limits {x^{-2}} \, dx\\ g(x) = \frac{x^{-2+1}}{-2+1} + C\\ g(x) = -x^{-1} + C\\g(x) = -x^{-1} + C\\$

If g(1) = 0, this means at x = 1, g(x) = 0

0 = -1⁻¹ + C

C= 1

Substitute C = 1 into the function

g(x) = -x⁻¹ + 1

If g(2) = 0, this means at x = 2, g(x) = 0

0 = -2⁻¹ + C

C= 2⁻¹

C = 1/2

Substitute C = 2 into the function

g(x) = -x⁻¹ + 1/2

3 0

3 years ago

A golf retailer purchases its clubs from a wholesaler at $44 per club. It sells the same clubs to golfers at $75 per club. What

emmainna [20.7K]

Answer:

70.45%

Step-by-step explanation:

The markup is $75 -44 = $31. As a percentage of the wholesale price, that is ...

$31/$44 × 100% ≈ 70.45%

3 0

3 years ago

25 points!

Dahasolnce [82]

Answer:

Okay, so. What I'd do is this.

$(5x+3)+(x+3)=180$

Then I'd combine like terms.

So:

$(5x+3)+(x+3)=180\\ 6x+6=180$

Once you've got 6x, you subtract 6 from 180.

$(5x+3)+(x+3)=180\\ 6x+6=180\\6x=174$

Now all that's left to do is divide each side by 6 to get x.

X should be 29.

Step-by-step explanation:

$(5x+3)+(x+3)=180$

You know that adding the equations will give you 180 because you know they're supplementary.

7 0

3 years ago