3 years ago

The point (3, -4) is on the terminal side of an angle . What is cos ?

Mathematics

1 answer:

elena55 [62]3 years ago

8 0

This is in the fourth quadrant where the cosine is positive
By pythagoras the hypotenuse is 5

so the cosine is 3/5 B

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All Seasons Plumbing has two service trucks that frequently need repair. If the probability the first truck is available is 0.75

oksano4ka [1.4K]

Answer: There is a probability of 0.05 that there is neither truck is available.

Step-by-step explanation:

Since we have given that

Probability that the first truck is available = 0.75

Probability that the second truck is available = 0.50

Probability that both trucks are available = 0.30

So, probability that either first truck or second truck is available is given by

$P(A\cup B)=P(A)+P(B)-P(A\cap B)\\\\P(A\cup B)=0.75+0.50-0.30\\\\P(A\cup B)=0.95$

We need to find the probability that neither truck is available.

so, P(A∪B)'=1-P(A∪B)

$P(A\cup B)'=1-0.95=0.05$

Hence, there is a probability of 0.05 that there is neither truck is available.

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3 years ago

The weekly salary of a store manager includes a $30 bonus plus the number of hours the manager works multiplied by the managers

just olya [345]

Answer:

Yes this is a linear function f(x) = ex+30

e = hourly rate

x=hours

f(x) = total earnings

6 0

3 years ago

A new Firestone tire is guaranteed to last for 40,000 miles. The actual mean life of the tires is 47,000 miles with a standard d

Rus_ich [418]

Answer:

a) 95.99%

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c) 00.62%

Step-by-step explanation:

Explanation is given in the attachments.

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3 years ago

Tracy mckinney is a disc jockey at radio station wmmm. her annual salary is $52,750. what is her monthly salary? $4,395.83 $5,27

ch4aika [34]

Divide the annual salary by 12 and you'll find the monthly salary
month salary = annual salary/12
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Her monthly salary is $4,395.83

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3 years ago

Express 4x−7y=14 in slope-intercept form. Enter your answers in the boxes.

devlian [24]

Y=2 7x2= 14
X= 7 4x7=28
28-14=14

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3 years ago