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3 years ago

Write the following as an algebraic expression: 7 less than 3 times x.

Mathematics

2 answers:

AveGali [126]3 years ago

4 0

Answer:

7 < 3x

Step-by-step explanation:

yuh

Lady bird [3.3K]3 years ago

3 0

Answer:

3-7x

Step-by-step explanation:

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Hugo and Viviana work in an office with eight other coworkers. Out of these 10 workers, their boss needs to choose a group of fo

Doss [256]

Answer:182 ways

Step-by-step explanation:

Given

there are total of 10 workers in office

No of ways to select 4 workers out of 10 workers $=^{10}C_4$

$=\frac{10\times 9\times 8\times 7}{4\times 3\times 2\times 1}=210$

(b)If hugo and Viviana refuse to work together then

then no of ways in which hugo anf Viviana work together

$=^{8}C_2=28$

Therefore total no of ways in which Hugo and Viviana do not work together is $=210-28=182\ ways$

3 0

4 years ago

A random variable X has a Poisson distribution with a mean of 3. What is the probability that X P(1≤X≤3) ?.

frosja888 [35]

Answer:

P(1≤X≤3) = 0.5974

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

In which

x is the number of sucesses

e = 2.71828 is the Euler number

$\mu$ is the mean in the given interval.

Mean of 3

This means that $\mu = 3$

P(1≤X≤3) ?

$P(1 \leq X \leq 3) = P(X = 1) + P(X = 2) + P(X = 3)$

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

$P(X = 1) = \frac{e^{-3}*3^{1}}{(1)!} = 0.1494$

$P(X = 2) = \frac{e^{-3}*3^{2}}{(2)!} = 0.2240$

$P(X = 3) = \frac{e^{-3}*3^{3}}{(3)!} = 0.2240$

$P(1 \leq X \leq 3) = P(X = 1) + P(X = 2) + P(X = 3) = 0.1494 + 0.2240 + 0.2240 = 0.5974$

4 0

3 years ago

Simplify the expression by combining like

Dennis_Churaev [7]

Answer:

9x² + 5x

Step-by-step explanation:

4x² + 6x + 5x²-x

Combine like terms:-

4x² + 5x² = 9x²

6x - x = 5x

9x² + 5x

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

6 0

2 years ago

Read 2 more answers

Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. The value of when a

maria [59]

Answer:

Missing information

Step-by-step explanation:

5 0

4 years ago

What is 2 squared root

Tema [17]

Just 2 that is it hope that helps

3 0

3 years ago