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Lunna [17]
3 years ago
12

You have to pay to fix the sink. They are charging you $75 for parts and

Mathematics
1 answer:
Alika [10]3 years ago
4 0

Answer: y = 20x+75

Step-by-step explanation:

Hi, to answer this question we have to write an equation:

The cost (y) must be equal to the product of the cost per hour of installation (20) and the number of hours that it takes (x); plus the fixed cost of parts and installation (75).

Mathematically speaking:

y = 20x+75

Feel free to ask for more if needed or if you did not understand something  

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Two teams A and B play a series of games until one team wins four games. We assume that the games are played independently and t
crimeas [40]

Answer:

4pq(p³+q³)

Step-by-step explanation:

Exactly 5 game would be when 4 wins and 1 loss of a particular person

loss has to be one of the first 4 games

A wins: qp⁴ + pqp³ + p²qp² + p³qp

= qp⁴ + qp⁴ + qp⁴ + qp⁴ = 4qp⁴

B wins: pq⁴ + qpq³ + q²pq² + q³pq

= pq⁴ + pq⁴ + pq⁴ + pq⁴ = 4pq⁴

A wins or B wins:

4pq⁴ + 4qp⁴ = 4pq(q³+p³)

6 0
3 years ago
Suppose the sample space for a probability experiment has 8 elements. If elements from the sample are selected without replaceme
Gwar [14]

Answer: Number of ways =\dfrac{8!}{8!0!}\ or \ 1

Step-by-step explanation:

When there is no replacement , we use combination to find the number of ways to choose things.

Number of ways to choose r things out of  ( with out replacement) = ^nC_r=\dfrac{n!}{r!(n-r)!}

The number of ways to choose  8 things = ^8C_8=\dfrac{8!}{8!(8-8)!}=\dfrac{1}{0!}=1  [\because 0!=1]

Hence,  Number of ways =\dfrac{8!}{8!0!}\ or \ 1

5 0
2 years ago
12% of the 50 donut holes in the box were chocolate. How many chocolate donut holes were in the box?
SSSSS [86.1K]

Answer:

6

Step-by-step explanation:

this should be the correct answer!

8 0
3 years ago
Sheldon is a long distance runner. He can run one mile at a constant pace of 6 4/5 minutes. If he maintains that pace, how many
Mademuasel [1]
1 mile = 6.45 minutes
? miles = 30 minutes
? miles = 30 / 6.45 = 4.65116279 (round up)
4.7 miles = 30 minutes
So roughly 4 and a half miles in 30 minutes
3 0
3 years ago
6. Cynthia wants to buy a round photo frame for
sineoko [7]

Answer:

<h3 />

Step-by-step explanation:

C = 2 x r x π = 2 x 9 x π = 18 π cm

4 0
2 years ago
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