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Ivanshal [37]
3 years ago
5

CAN SOMEONE HELP ME WITH THIS???????????

Mathematics
1 answer:
yanalaym [24]3 years ago
8 0

Answer:

See Step by step explanation

Step-by-step explanation:

(g+f)(x) = g(x) + f(x) = 7x-1\\(g'f)(x) = g(x)f(x) = (3x-1)(4x) = 12x^{2}-4x\\(g-f)(-2) = -(-2)-1 = 1

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What is the width of a rectangle with an area of 5/8 inches and the length of 10 inches?
Nimfa-mama [501]
A = LW......W = A/L
A = 5/8
L = 10

W = (5/8) / 10
W = 5/8 * 1/10
W = 5/80 = 1/16


3 0
3 years ago
A food company distributes its tomato soup in two cans of different sizes. For the larger can, both the diameter and the height
Lady_Fox [76]

Problem

A food company distributes its tomato soup in two cans of different sizes. For the larger can, both the diameter and the height have been increased by 15%.

By what percentage does the volume increase from the smaller can to the larger can? Round your answer to the nearest percent. ​

Solution

the volume of a cylinder is given by:

V=\pi r^2h

We know that the diameter=radius and the height are increased by 15% so then the new volume can be calculated on this way:

V=\pi(1.15r)^2\cdot(1.15h)=1.15^2\cdot1.15\cdot\pi\cdot r^2\cdot h=1.52\pi r^2h

And the new volume would increase about 52%

5 0
1 year ago
Please answer these two questions !!!
Roman55 [17]

I don't know 1 but 2 can be 2.3 over 4.5 I think sorry if it's wrong but I hope it helps

3 0
3 years ago
According to the American Lung Association, 7% of the population has lung disease. Of those having lung disease, 90% are smokers
postnew [5]

Answer:

Probability that a smoker has lung disease = 0.2132

Step-by-step explanation:

Let L = event that % of population having lung disease, P(L) = 0.07

So,% of population not having lung disease, P(L') = 1 - P(L) = 1 - 0.07 = 0.93

S = event that person is smoker

% of population that are smokers given they are having lung disease, P(S/L) = 0.90

% of population that are smokers given they are not having lung disease, P(S/L') = 0.25

We know that, conditional probability formula is given by;

                        P(S/L) = \frac{P(S\bigcap L)}{P(L)}  

                        P(S\bigcap L) = P(S/L) * P(L)

                                      = 0.90 * 0.07 = 0.063

So,  P(S\bigcap L) = 0.063 .

Now, probability that a smoker has lung disease is given by = P(L/S)

      P(L/S) = \frac{P(S\bigcap L)}{P(S)}

P(S) = P(S/L) * P(L) + P(S/L') * P(L')

       = 0.90 * 0.07 + 0.25 * 0.93 = 0.2955

Therefore, P(L/S) = \frac{0.063}{0.2955} = 0.2132

Hence, probability that a smoker has lung disease is 0.2132 .

7 0
4 years ago
49 + (-18) + (-23) = r (r=
fgiga [73]

Answer:

Exact form : r=2squareroot2, -2squareroot2

Decimal form : r=2.8284212...,-2.82842712....

Step-by-step explanation: Take the root of both sides and then solve.

Hope this helps you out.

3 0
3 years ago
Read 2 more answers
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