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2 years ago

10

A plumber charges $15 for transportation and $40 per hour for repairs complete the expression that can be used to find the cost

in dollars for a repair that takes hours

1 answer:

qwelly [4]2 years ago

7 0

Answer:

y = 45x + 15

Step-by-step explanation:

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A bag has 3 red marbles, 2 blue, 4 greens and 1 yellow. What is the probability of pulling a blue, putting it back

Tomtit [17]

Answer: 2/25

Step-by-step explanation: Since we are replacing the marbles, these two events are independent which means that the outcome of the first does not affect the outcome of the second.

First find the probability of selecting a blue marble.

There are 2 favorable outcomes, the blue marbles,

and 10 possible outcomes, all the marbles in the bag.

So the probability of selecting a blue marble is 2/10 or 1/5.

<em>Always reduce when finding probability</em>

<em></em>

Now we find the probability of selecting a green marble.

There are 4 green marbles and 10 total so the probability of

selecting a green marble is 4/10 or 2/5.

Now we multiply the probabilities.

So we have 1/5 x 2/5 or 2/25.

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2 years ago

NEED HELP ASAP! HURRY!

Aleks04 [339]

Answer:

B, C

Step-by-step explanation:

Both these intervals are where the graph is increasing.

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2 years ago

Find -3/7 ÷ -1 1/4 please

lara [203]

Answer:

12/77

Step-by-step explanation:

-3/7 ÷ -11/4

switch the numerator and denominator around because of division

-3/7×-4/11=12/77

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3 years ago

Jackson purchased some power tools totaling $1,543 using a six month deferred payment plan with an interest rate of 23.76%. He d

skad [1K]

Suppose he makes the payment with two equal annual instalments, the present value of the amount he is owing is $1,543 , the interest rate is 23.76% = 0.2376.

The amount of payment he makes in two of the periodic payments is given by:

$PV = P\left( \frac{1-(1+r)^{-n}}{r} \right) \\ \\ \Rightarrow1,543=P\left( \frac{1-(1+0.2376)^{-2}}{0.2376} \right) \\ \\ =P\left( \frac{1-(1.2376)^{-2}}{0.2376} \right)=P\left( \frac{1-0.6529}{0.2376} \right) \\ \\ =P\left( \frac{0.3471}{0.2376} \right)=1.4609P \\ \\ \Rightarrow P= \frac{1,543}{1.4609} =1,056.20$

Therefore, in 2 years, the amount he has paid for the tools is 2(1,056.20) = 2,112.40

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3 years ago

Find the inverse function of<br><br> m(x) = 5x - 5

sleet_krkn [62]

Answer:

5(x−1)

Step-by-step explanation:

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2 years ago