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mr Goodwill [35]
3 years ago
13

Need help with a,b,c! D: helpzzz

Mathematics
1 answer:
nlexa [21]3 years ago
3 0
A: 11ft B: 45 C: 556
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If Becky reads at a rate of p pages per hour for a total of h hours, which of the following represents the total number of pages
Elis [28]

We are looking for the total number of pages Becky reads, which is dependent on how many hours she reads for. So, we should multiply the number of pages she reads by the number of hours.

The correct answer is p x h or h x p. As long as these two values are multiplied, there is no difference in the order of the values.

Hope this helps!! :)

5 0
3 years ago
What is the slope of a line that passes through points (2, 4) and (5, 8)?
Luda [366]

Answer:

4/3

Step-by-step explanation:

(4-8)/(2-5) = -4/-3 = 4/3

8 0
3 years ago
Evaluate C_n.xP^xQn-x For the given n=7, x=2, p=1/2
r-ruslan [8.4K]

Answer:

The value of given expression is \frac{21}{128}.

Step-by-step explanation:

Given information: n=7, x=2, p=1/2

q=1-p=1-\frac{1}{2}=\frac{1}{2}

The given expression is

C(n,x)p^xq^{n-x}

It can be written as

^nC_xp^xq^{n-x}

Substitute n=7, x=2, p=1/2 and q=1/2 in the above formula.

^7C_2(\frac{1}{2})^2(\frac{1}{2})^{7-2}

\frac{7!}{2!(7-2)!}(\frac{1}{2})^2(\frac{1}{2})^{5}

\frac{7!}{2!5!}(\frac{1}{2})^{2+5}

\frac{7\times 6\times 5!}{2\times 5!}(\frac{1}{2})^{2+5}

21(\frac{1}{2})^{7}

\frac{21}{128}

Therefore the value of given expression is \frac{21}{128}.

7 0
3 years ago
A store has 80 modems in its inventory, 30 coming from source a and the remainder from source
Mrrafil [7]
The number of defective modems in the inventory is 20%⋅ 30 + 8%⋅ 50 = 10 (out of 80). Note that the number of defectives in the inventory is fixed, i.e., we are not told that there is 1 8 probability that a modem in the inventory is defective, but rather that exactly 1 8 of all modems are defective. The probability that exactly two modems in a random sample of five are defective is = 0.102
5 0
3 years ago
40 x 125% step it out
AlladinOne [14]

Answer:

0.50 or 50%

Step-by-step explanation:

40 x 125 = X

1.25 as a decimal or 125%

40 x 1.25 = 0.50

0.50 --->50%

40 x 125% = 50%

3 0
2 years ago
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