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2 years ago

Select more than 1 please

Mathematics

1 answer:

umka2103 [35]2 years ago

5 0

Here are the answers:
1.) DC=D’C’
2.) 3.) ED=E’D’

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The number of knots in a particular type of wood can be modeled by a Poisson distribution with an average of 1.4 knots in 10 cub

Kamila [148]

Answer:

Probability that a 20- cubic foot block of wood has at most 1 knot P (X<=1) = 0.5918

Step-by-step explanation:

Average rate of knot= 1.4

Wavelength = 1.4

Geometric probability is given by:

P(X= K) = wavelength ^k × e^-wavelegth

P(X=0) = (1.4^0 × e^-1.4)/0!

P(X=0) = 1 × 0.2466 = 0.2466

P(X=1) = 1.4^1 × e^-1.4

P(X=1)= 1.4×0.2466= 0.3452

P(X<=1)= P(X=0) + P(X=1)

P(X<=1) = 0.2466 + 0.3452 = 0.5918

6 0

2 years ago

25 points pluss brainliest!!! math.

BARSIC [14]

Answer: 9.97

==============================================

Explanation:

y = distance from the base of the pole to the closest person

y+200 = total horizontal distance

-------------

Focus on the smaller right triangle.

tan(angle) = opposite/adjacent

tan(26) = 55/y

y*tan(26) = 55

y = 55/tan(26)

y = 112.76671 approximately

Make sure your calculator is in degree mode.

--------------

Now move to the larger right triangle

tan(angle) = opposite/adjacent

tan(x) = 55/(y+200)

tan(x) = 55/(112.76671+200)

tan(x) = 55/312.76671

tan(x) = 0.17585

x = arctan(0.17585) same as $\tan^{-1}$

x = 9.97349

x = 9.97 degrees approximately

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1 year ago

Help me plz this test is hard

kenny6666 [7]

Answer:

B I think

Step-by-step explanation:

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2 years ago

Prove that x=2 if 4^x=8x...where ^ stands for "to the power of".

Romashka [77]

In order to prove this, you simply plug in the number 2 everywhere you see X:

4^(2) = 8(2).

Simplify

16 = 16 √

Since this checks out, x is proven to be 2.

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Antonio uses dish soap in his recipe for giant bubbles. he compares the prices of two brands of soap. which brand is the better

schepotkina [342]

Answer:$2.36

Step-by-step explanation:

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2 years ago