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2 years ago

Help ASAP! Plz Question: Find FH

Mathematics

1 answer:

Dmitry [639]2 years ago

8 0

Step-by-step explanation:

(20). FH= 22-15 = 7

(21). FH = 42 - 22 = 20

(22). FH = 53 - 40 = 13

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PLEASE HELP ME! How do you factor out the coefficient of a variable?? Example: 5c - 15

SpyIntel [72]

Divide both by a number that can go into both terms so it will be 5 .
$\frac{5c-15}{5}$ which is 5(c-3)

7 0

2 years ago

Read 2 more answers

The caller times at a customer service center has an exponential distribution with an average of 22 seconds. Find the probabilit

jenyasd209 [6]

Answer:

The probability that a randomly selected call time will be less than 30 seconds is 0.7443.

Step-by-step explanation:

We are given that the caller times at a customer service center has an exponential distribution with an average of 22 seconds.

Let X = caller times at a customer service center

The probability distribution (pdf) of the exponential distribution is given by;

$f(x) = \lambda e^{-\lambda x} ; x > 0$

Here, $\lambda$ = exponential parameter

Now, the mean of the exponential distribution is given by;

Mean = $\frac{1}{\lambda}$

So, $22=\frac{1}{\lambda}$ ⇒ $\lambda=\frac{1}{22}$

SO, X ~ Exp( $\lambda=\frac{1}{22}$ )

To find the given probability we will use cumulative distribution function (cdf) of the exponential distribution, i.e;

$P(X\leq x) = 1 - e^{-\lambda x}$ ; x > 0

Now, the probability that a randomly selected call time will be less than 30 seconds is given by = P(X < 30 seconds)

P(X < 30) = $1 - e^{-\frac{1}{22} \times 30}$

= 1 - 0.2557

= 0.7443

7 0

3 years ago

What is 71/72 simplified?

Elina [12.6K]

The fraction can't be simplify since it already is

7 0

3 years ago

Read 2 more answers

SAT scores: The College Board reports that in 2009, the mean score on the math SAT was 582 and the population standard deviation

Andrews [41]

Answer:

we can conclude that there is no significant evidence to conclude that the mean score in 2010 differs from the mean score in 2009.

Step-by-step explanation:

H0 : μ = 582

H1 : μ < 582

Test statistic :

T = (xbar - μ) ÷ σ/√n

Xbar = 515 ; n = 20 ; σ = 120

T = (515 - 582) ÷ 120/√20

T = -67 / 26.832815

T = 2.50

Pvalue at t score = 2.50 ; df = 19 is 0.0187

At α = 0.0187

Pvalue > α ; Hence, we fail to reject the Null

Hence, we can conclude that there is no significant evidence to conclude that the mean score in 2010 differs from the mean score in 2009.

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3 years ago

An expression 20x + 35y What is the greatest common factor

jekas [21]

Answer:

Step-by-step explanation:

$20x = 2 \times 2 \times 5 \times x\\ 35y = 5 \times 7 \times y$

GCF = 5

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2 years ago