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Vinvika [58]
3 years ago
9

Help! Solve for x !! Use picture below

Mathematics
1 answer:
creativ13 [48]3 years ago
7 0

Answer:

x=7

Step-by-step explanation:

since it is the same side length,

3x+6 = 10x-43

3x-10x = -43-6

-7x = -49

x=-49/-7=7

please mark brainliest

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X
Simora [160]

Using it's formula, it is found that the mean of the discrete random variable is given by:

B. 30.47.

<h3>What is the mean of a discrete distribution?</h3>

The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability</u>.

Hence, considering the table, the mean of the discrete distribution is:

E(X) = 23 x 0.16 + 25 x 0.09 + 26 x 0.18 + 31 x 0.12 + 34 x 0.24 + 38 x 0.21 = 30.47.

Hence option B is correct.

More can be learned about the mean of a discrete random variable at brainly.com/question/26660401

#SPJ1

4 0
2 years ago
Which of the following are independent pairs of events? Check all that apply.
Mila [183]

Answer:

A,D and E

Step-by-step explanation:

Intuitively speaking two events are independents when the occurrence of one event (A) does not exert influence over the event (B)

Symbolic speaking in terms of sets

P(A∩B)= P(A) * P(B)

Examining each alternative

A. Flipping two coins and having one show a head and the other show a head

Independent. Each flipping coin does not exert any influence on the other

B. Being sneezed on and catching a cold

Dependent. This sequence of events expresses cause consequences effects.

C. When rolling a pair of dice, getting a total of 6 and having one die show a 3

Dependent

Under these conditions, the second event is dependent since all we need is a sum of six, having the first dice showing three. The second one has to show three. So it does exert influence under the result.

D. Rolling a 4 on one die and rolling a 2 on another die

Independent. To get a 4 does not exert any influence on getting a 2 on another dice.

E. Seeing clouds and winning the lottery

Independent.

There is no influence seeing clouds and winning the lottery.

4 0
3 years ago
Read 3 more answers
Solving Exponential Equations (lacking a common base)<br> (0.66)^k=9
Alexandra [31]

Answer:

k = log9 / log 0.66

k = 5.3

Step-by-step explanation:

Please always remember that, when an exponential equation is given with different bases, the best approach is to take log of both sides.

If you have a calculator handy, that would be pretty fast and easy.

0.66 ^ k = 9

Take log of both sides:

klog 0.66 = log 9

k = log 9 / log 0.66

k = 0.954 / - 0.18

k = -5.3

Maths is fun, let's keep learning

3 0
3 years ago
Determine which quadrilaterals match the figure parallelogram, rhombus, rectangle, or square? Select all
PSYCHO15rus [73]

Answer:

<em><u>(A) Parallelogram</u></em> is the right answer.

4 0
3 years ago
(b) Rewrite the percentage in the sentence below as a decimal.
Arturiano [62]
40% = 0.4
Explication:
40 / 100 = 0.4

5 0
3 years ago
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