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rjkz [21]
3 years ago
9

Help pls with the pic

Mathematics
2 answers:
STALIN [3.7K]3 years ago
7 0

Answer:

B. (6x+3)(6x-3)

Step-by-step explanation:

distribute to get answers

evablogger [386]3 years ago
7 0

Answer:

B) (6x+3) (6x - 3)

Step-by-step explanation:

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Let X = the time between two successive arrivals at the drive-up window of a local bank. If X has an exponential distribution wi
Illusion [34]

Answer:

(a) E(X) = 1

(b) \sigma_X =1

(c)  P(X ≤ 1) = 0.6321

(d) P(2 ≤ X ≤ 5) = 0.1286

Step-by-step explanation:

From the given information; Let consider X to be the time between two successive arrivals at the drive-up window of a local bank.

However; If X is regarded as the exponential distribution with λ = 1 which is identical to a standard gamma distribution with ∝ = 1

The objective is to compute the following :

(a) The expected time between two successive arrivals is;

E(X) = \dfrac{1}{\lambda}

E(X) = \dfrac{1}{1}

E(X) = 1

(b)  The standard deviation of the time between successive arrivals is;

\sigma_X = \sqrt{\dfrac{1}{\lambda^2}}

\sigma_X ={\dfrac{1}{\lambda}}

\sigma_X ={\dfrac{1}{1}}

\sigma_X =1

(c)  P(X ≤ 1)

P(X ≤ 1) = 1 - e⁻¹

P(X ≤ 1) = 0.6321

(d) P(2 ≤ X ≤ 5)

P(2 ≤ X ≤ 5) = [1 -  e⁻⁵] - [1 - e⁻²]

P(2 ≤ X ≤ 5) = 0.9933 - 0.8647

P(2 ≤ X ≤ 5) = 0.1286

7 0
3 years ago
Please solve this problem.<br> 2x + 34 = 56
maksim [4K]

Answer:

x = 11

Step-by-step explanation:

2x + 34 = 56

2x = 56 - 34

2x = 22

x = 22/2

x = 11

8 0
3 years ago
Read 2 more answers
Which statement illustrates the distritive property
sp2606 [1]
Distributive property is used when you have a number outside a set of numbers in parenthesis.

Using the distributive property, you multiply the number outside the parenthesis by each number inside the parenthesis.

The first answer is correct because they are multiplying 9 by 20 and adding it to 9 multiplied by 6.
4 0
3 years ago
Find the missing dimension of the prism. Round your answer to the nearest hundredth.
Nitella [24]

Answer:

x = 6.99in

Step-by-step explanation:

Given

l =2in

Volume = 72.66in^3

See attachment for prism

Required

Find x

The prism has a regular hexagon base

The base area is calculated as:

Base\ Area= \frac{3\sqrt 3}{2}l^2

This gives:

Base\ Area= \frac{3\sqrt 3}{2} * 2^2

Base\ Area= \frac{3\sqrt 3}{2} * 4

Base\ Area= 3\sqrt 3 * 2

Base\ Area= 6\sqrt 3

Side x represents the height.

So, we have:

Volume = Base\ Area*x

Make x the subject

x = \frac{Volume }{ Base\ Area}

x = \frac{72.66in^3}{6\sqrt 3 in^2}

x = \frac{72.66}{6\sqrt 3}in

x = \frac{12.11}{\sqrt 3}in

x = 6.99in --- approximated

6 0
3 years ago
What's the LCM of 2,63,and 14
Troyanec [42]
2=2
63= 3* 3* 7
14= 2*7
LCM (2,63,14)= 2*3*3*7= 126

The least common multiple (LCM) of 2, 63, and 14 is 126~
3 0
3 years ago
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