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2 years ago

A mechanic earned $983.88 for42.5 hours of work. Which is the best estimate of how much the mechanic

Mathematics

1 answer:

valentina_108 [34]2 years ago

5 0

Answer:

23.15 an hour

Step-by-step explanation:

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I will mark you brainliest just give me the answer please. (I suck at math a lot.) 2s + 7 < 13: 1, 2, 3

AleksandrR [38]

Answer:

Step-by-step explanation:

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2 years ago

Tom has a cube a rectangle prism and a triangular prism. Which of these shapes have more than 6 vertical?

Elenna [48]

The cube and rectangular prism.

Step-by-step explanation:

The triangular prism has 5 and the other two both have 8.

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2 years ago

Factor 9(x + 4)^2 + (x + 4) – 10 completely.<br> HELP!!!

AleksAgata [21]

Answer:

Step-by-step explanation:

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2 years ago

The owner of the Koffee Shop pours the remainder of her old house blend, which is 40 % 40 % Colombian beans, into a 60 60 -pound

maks197457 [2]

Answer:

0.4h ; 60 - h ;18 - 0.3h ; 0.1h + 18

Step-by-step explanation:

Given that:

Old house blend = 40% Columbian beans

New house blend = 30% Columbian beans

h = number of pounds of old house blend

a.) pound of columbian bean in old house blend :

40% of h = 0.4h

b.) pound of new blend poured into the bean:

Size of bin = 60 pound

Size of bin - pound of old house blend

(60 - h)

c. Amount of columbian bean in pound of new house blend :

30% of (60 - h)

0.3 * (60 - h)

18 - 0.3h

D.) Amount of columbian bean in 60 pound bin

(Pound of columbian bean in old house blend + pound of Columbian bean in New house blend)

0.4h + (18 - 0.3h)

0.4h + 18 - 0.3h

0.1h + 18

4 0

2 years ago

32% of college students say they use credit cards because of the rewards program. You randomly select 10 college students and a

Tems11 [23]

Answer:

a) $P(X=2)=(10C2)(0.32)^2 (1-0.32)^{10-2}=0.211$

b) $P(X> 2)=1-P(X\leq 2)=1-[0.0211+0.0995+0.211]=0.668$

c) $P(2 \leq x \leq 5)=0.211+0.264+0.218+0.123=0.816$

Step-by-step explanation:

1) 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".

2) Solution to the problem

Let X the random variable of interest, on this case we now that:

$X \sim Binom(n=10, p=0.32)$