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3 years ago

SOMEONE PLEASE HELP ME

Mathematics

1 answer:

Nadya [2.5K]3 years ago

7 0

Use desmos to find your answer hope that helps

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1+ root2x + 1 = root2x + 8

hodyreva [135]

Answer:

14x 2 +9

Step-by-step explanation:

6 0

2 years ago

Fifty-three percent of employees make judgements about their co-workers based on the cleanliness of their desk. You randomly sel

GarryVolchara [31]

Answer:

The unusual $X$ values for this model are: $X = 0, 1, 2, 7, 8$

Step-by-step explanation:

A binomial random variable $X$ represents the number of successes obtained in a repetition of $n$ Bernoulli-type trials with probability of success $p$ . In this particular case, $n = 8$ , and $p = 0.53$ , therefore, the model is ${8 \choose x} (0.53) ^ {x} (0.47)^{(8-x)}$ . So, you have:

$P (X = 0) = {8 \choose 0} (0.53) ^ {0} (0.47) ^ {8} = 0.0024$

$P (X = 1) = {8 \choose 1} (0.53) ^ {1} (0.47) ^ {7} = 0.0215$

$P (X = 2) = {8 \choose 2} (0.53)^2 (0.47)^6 = 0.0848$

$P (X = 3) = {8 \choose 3} (0.53) ^ {3} (0.47)^5 = 0.1912$

$P (X = 4) = {8 \choose 4} (0.53) ^ {4} (0.47)^4} = 0.2695$

$P (X = 5) = {8 \choose 5} (0.53) ^ {5} (0.47)^3 = 0.2431$

$P (X = 6) = {8 \choose 6} (0.53) ^ {6} (0.47)^2 = 0.1371$

$P (X = 7) = {8 \choose 7} (0.53) ^ {7} (0.47)^ {1} = 0.0442$

$P (X = 8) = {8 \choose 8} (0.53)^{8} (0.47)^{0} = 0.0062$

The unusual $X$ values for this model are: $X = 0, 1, 7, 8$

6 0

3 years ago

Read 2 more answers

When factored completely, the expression 3x2 - 9x + 6 is equivalent to

Lunna [17]

Let's see what the options look like when we multiply the expressions in brackets:

(first, i multiply both parts of the second bracked by the first part of the first bracket, and then the same with the second part of the first bracket:
(1) (3x - 3)(x - 2))

3x2 +6x -3x +6// this is not correct

(2) (3x + 3)(x - 2) 

3x2-6x+3x-6//this is not correct

(3)

3(x + 1)(x - 2)
3(x2-2x+x-2)//simplifying:
3(x2-x-2)//multiplying:
3x2-3x-6)
- so this is not correct either
(4) 3(x - 1)(x - 2)
3(x2-2x - x + 2)
3(x2-3x +2)
3x2-9x +6 - well, here is our winner!

8 0

3 years ago

Read 2 more answers

2 meters 2 meters 5 meters 4 meters What is the area of the shape?

Alex73 [517]

C
A million apologies if I’m incorrect

6 0

3 years ago

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Can any kind soul help me please

NeX [460]

Answer:

Cot is an inverse of tan:

${ \tt{4 \cot( \theta) = \tan( \theta) }} \\ { \tt{ \frac{4}{ \tan( \theta) } = \tan( \theta) }} \\ \\ { \tt{4 = { \tan }^{2} \theta }} \\ { \tt{ \tan \theta = ±2}} \\ { \bf{\theta =±63.4 \degree }}$

3 0

3 years ago