Ask question

Ask question

All categories

3 years ago

9

I need help with the rest of my algebra fraction homework on Page's 11,12,14, 16 and 18. Is there anybody willing to help me wit

h my homework please. Thank You!

1 answer:

mrs_skeptik [129]3 years ago

8 0

Answer:

11. B

12. A

14. C

16. D

18. A

You might be interested in

Exercise #1: The amount of money in Nicole's bank account can be represented by the function f(x) = 32.50x + 200,

kolezko [41]

The initial amount in the account was $200 (y intercept). She adds $32.50 each day to her bank account (slope).

7 0

3 years ago

If 90 percent of automobiles in Orange County have both headlights working, what is the probability that in a sample of eight au

Marta_Voda [28]

Answer:

$P(X \geq 7) = P(X=7) +P(X=8)$

And we can find the individual probabilities using the probability mass function

$P(X=7)=(8C7)(0.9)^7 (1-0.9)^{8-7}=0.3826$

$P(X=8)=(8C8)(0.9)^8 (1-0.9)^{8-8}=0.4305$

And replacing we got:

$P(X \geq 7) = P(X=7) +P(X=8)=0.3826 +0.4305=0.8131$

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Solution to the problem

Let X the random variable of interest "number of automobiles with both headligths working", on this case we now that:

$X \sim Binom(n=8, p=0.9)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

And for this case we want to find this probability:

$P(X \geq 7) = P(X=7) +P(X=8)$

And we can find the individual probabilities using the probability mass function

$P(X=7)=(8C7)(0.9)^7 (1-0.9)^{8-7}=0.3826$

$P(X=8)=(8C8)(0.9)^8 (1-0.9)^{8-8}=0.4305$

And replacing we got:

$P(X \geq 7) = P(X=7) +P(X=8)=0.3826 +0.4305=0.8131$

7 0

3 years ago

Read 2 more answers

Shaniqua can read at a speed of 50 pages per hour. She reads 275 pages one weekend. How many hours does she read?

Burka [1]

275/50=5.5
She read for 5 and a half hours

5 0

3 years ago

Read 2 more answers

Pakisagutan lang po help pls

aniked [119]

Answer:

Step-by-step explanation:

S 50 m = 0.050 km

A ∵ 1 m = 100 cm

∴ 5 m = 500 cm

K ∵ 1000 dm = 0.1 km

∴ 1 dm = $\frac{0.1}{1000}$ km

∴ 5246 dm = $\frac{0.1}{1000}\times 5246$ km

= 0.5246 km

P ∵ 1 m = 1000 mm

∴ 5.246 m = 5246 mm

P ∵ 1 hg = 1000 dg

∴ 3.7 hg = 3700 dg

U ∵ 1 g = 100 cg

∴ 0.37 g = 37 cg

E ∵ 1 kg = 1000 g

∴ 370 kg = 370,000 g

8 0

3 years ago

2. f(x) = √x-5<br> What is the domain and range

Dafna1 [17]

Answer:

solution - x is less then or equal to 5

Step-by-step explanation:

the domain of a function is the set of input or argument values for which the function is real and defined.

3 0

3 years ago