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Orlov [11]
3 years ago
9

1) The graph shows a probability distribution.

Mathematics
1 answer:
Gekata [30.6K]3 years ago
5 0

1. P(X is the area under the curve to the left of x=5, which is a trapezoid with "bases" of length 2 and 5 and "height" 0.2, so

P(X

2. Find the area under the curve for each of the specified intervals:

P(X\le2)=\dfrac{2\cdot0.2}2=0.2 (triangle with base 2 and height 0.2)

P(X\ge4)=\dfrac{1\cdot0.4}2=0.2 (triangle with base 1 and height 0.4)

P(2\le X\le4)=\dfrac{0.2+0.4}2\cdot2=0.6 (trapezoid with "bases" 0.2 and 0.4 and "height" 2)

P(1\le X\le3)=\dfrac{0.1+0.3}2\cdot2=0.4 (trapezoid with "bases" 0.1 and 0.3 and "height" 2)

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Please help me please please
LenKa [72]

Answer:

1276.19553 m^{2}

Step-by-step explanation:

First, find height using Pythagoras thorem.

a=\sqrt{20^2+12.5^2}

a=15.61

Then use the formula to find the surface area of a cone.

π•12.5•(12.5+\sqrt{15.61^2+12.5^2})=1276.19553 m^{2}

6 0
3 years ago
Find the derivative of the function <br> f(x) = √2^3 + ln(x^3) - 2x^3 - log_3(729) - 2/x^4
marysya [2.9K]

Applying the rules for the constant, logarithm and exponents, the derivative of the given function is of:

f'(x) = 3/x - 6x² - 8/(x^5).

<h3>What is the derivative of the function?</h3>

The function is given by:

f(x) = √2^3 + ln(x^3) - 2x^3 - log_3(729) - 2/x^4

The derivative of a sum is the sum of the derivatives, hence:

f'(x) = (√2^3)' + (ln(x^3))' - (2x^3)' - (log_3(729))' - (2/x^4)'

The derivative of a constant is of zero, hence:

  • (√2^3)' = 0.
  • (log_3(729))' = 0.

Hence:

f'(x) = (ln(x^3))' - (2x^3)' - (2/x^4)'.

The derivative of the logarithm is given by:

ln(h(x))' = (1/h(x)) x h'(x).

Hence:

(ln(x^3))' = 3x²/x³ = 3/x.

The derivative of the power of x is given by:

[x^n]' = nx^(n-1).

Hence:

  • (2x³)' = 6x².
  • (2/x^4)' = (2x^(-4))' = -8x^(-5) = -8/(x^5).

Hence the derivative of the function is given by:

f'(x) = 3/x - 6x² - 8/(x^5).

More can be learned about derivatives at brainly.com/question/23819325

#SPJ1

3 0
1 year ago
Larry purchsed 3 pairs of pants for 24 each and 5 shirts for 18 each. how much larry spend
7nadin3 [17]

Answer:

162

Step-by-step explanation:

24 x 3 = 72

5 x 18 = 90

90 + 72 = 162

4 0
3 years ago
Read 2 more answers
Help pls with explanation!!!
kvv77 [185]

Answer:

18c - 30d + 36

Step-by-step explanation:

To apply the distributive property, we must "distribute" (multiply) the outer term by the terms in the parentheses. In this case, the outer term is 6, and the inner terms are 3c, 5d, and 6. Then, if there's any like terms, you must combine them.

6(3c - 5d + 6)

(6 · 3c) + (6 · -5d) + (6 · 6)

18c + -30d + 36

As you can see, there's no like terms in this expression, so the equivalent expression to 6(3c - 5d + 6) is <u>18c + -30d + 36</u>.

8 0
4 years ago
Can anyone help with 9? Anything helps
Nana76 [90]

∠ABF and ∠CBE are vertical angles

3x + 25 + 7x - 19 = 10x - 6

Set them equal to each other

∠ABF = ∠CBE

6x + 26 = 10x - 6

Isolate the x. Subtract 6x from both sides and add 6 to both sides

6x (-6x) + 26 (+6) = 10x (-6x) - 6 (+6)

26 + 6 = 10x - 6x

Simplify

32 = 4x

Divide 4 from both sides

32/4 = 4x/4

x = 32/4

x = 8

m∠ABF = 6x + 26

Plug in 8 for x

6(8) + 26 = m∠ABF

48 + 26 = m∠ABF

m∠ABF = 74°

74° is your answer for m∠F

hope this helps

4 0
3 years ago
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