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SVEN [57.7K]
3 years ago
13

How to solve step by step

Mathematics
1 answer:
allsm [11]3 years ago
5 0
∫tan²4x.dx=4∫tan²xdx

but tan²x =sec²x-1

===>4∫(sec²x-1)dx = 4[∫sec²dx-∫dx]

===>4∫sec²xdx-4∫dx=====> 4tanx-4x +c
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Pls help with this question
kirill115 [55]

Answer: first answer choice

Step-by-step explanation:

8 0
3 years ago
A triangle has side lengths of 13 in, 29 in, and 30 in. Classify it as acute, obtuse, or right.
kenny6666 [7]

Acute

Angle ∠ A = α = 25.385° = 25°23'6″ = 0.443 rad

Angle ∠ B = β = 73.004° = 73°14″ = 1.274 rad

Angle ∠ C = γ = 81.611° = 81°36'41″ = 1.424 rad

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3 years ago
A box has 11 marbles, 3 of which are white and 8 of which are red. A sample of 4 marbles are selected randomly from the box with
aliina [53]

14/99

Select 1 marble; the chance that it is white is 4/12. Select a 2nd marble; the chance that it is white is 3/11. Select a 3rd; the chance it is white is 2/10. Select a 4th; the chance it is red is 8/9. Select a 5th; the chance it is red is 7/8. The chance of getting this specific set of 5 marbles in this order is (4/12)×(3/11)×(2/10)×(8/9)×(7/8)=(2×7)/(11×10×9).

This specific set could occur in the permutation of 5 things taken 5 at a time where 3 are identical (white), and the other 2 are also identical (red). The formula for this is 5!/(3!2!)=10.

Combining the chance of getting white, white, white, red, red with the number of ways 3 white and 2 red could have been distributed in the draw of 5 marbles gives the answer:

{(2×7)/(11×10×9)}×10=14/99

A similar process will show that the chance of getting 5 red marbles is 7/99; 4 white and 1 red is 1/99; 2 white and 3 red is 42/99; and 1 white and 4 red is 35/99.

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3 years ago
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How should people vote paper electronically online arc?
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Which data set contains an outlier?
Paul [167]

Answer: the first one

Step-by-step explanation: the number is 42 45 45 46 and 48 are all close together while the number 16 is off to the whole other side

3 0
2 years ago
Read 2 more answers
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