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Evgen [1.6K]
3 years ago
10

A bag contains 5 blue marbles, 6 red marbles, and 9 green marbles. two marbles are drawn at random, one at a time and with out r

eplacement. what is the probability of selecting two red marbles
a) 9/20
b) 3/38
c) 1/19
d) 11/20
Mathematics
1 answer:
Bess [88]3 years ago
4 0
Your answer would be d) 11/20 knowing that there are in total 6 red marbles and you don't replace it so it would be 6+5=11 and 9+6+5= 20 so it would leave you with 11/20
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What will be the cost for 8 hours of work? 10 hours of work?​
andreyandreev [35.5K]

Answer:

<u>Cost = 25 + 50h</u>

cost for 8 hours of work = $425

cost for 10 hours of work = $525

Step-by-step explanation:

The question is as following:

A plumber charges $25 for a service call plus $50 per hour of service write an equation to represent the cost of hiring this plumber​.

what will be the cost for 8 hours of work? 10 hours of work?​

=======================================================

A plumber charges $25 for a service call plus $50 per hour

<u>Cost = 25 + 50h</u>

Where h is the number of hours of service

8 hours of work: h = 8

Substitute with h = 8 at the equation of cost

<u>Cost = 25 + 50* 8 = $425</u>

10 hours of work: h = 10

Substitute with h = 10 at the equation of cost

<u>Cost = 25 + 50 * 10  = $525</u>

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3 years ago
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Ilia_Sergeevich [38]

What? What's your question?

3 0
3 years ago
Read 2 more answers
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DedPeter [7]

Answer:

?=19

x=30

Step-by-step explanation:

5/6x - 1/5x = 19

5(5/6x) - 6(1/5x) = 19

25/30x-6/30x=19

19/30x=19

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6 0
3 years ago
Solve for x: -6x - 2 = 40
julia-pushkina [17]
<span>-6x - 2 = 40
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..................</span>
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3 years ago
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Answer:

I'm here! This Problem is easy :) The answer is 4

Step-by-step explanation:

2x+10=5x−2

<em>Subtract </em>5x from both sides

2x+10−5x=−2

<em>Combine</em> 2x and −5x to get −3x.

−3x+10=−2

Subtract 10 from <em>both sides.</em>

−3x=−12

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Divide −12 by −3 to get 4.

x=\frac{-12}{-4}

x = 4 (D)

7 0
3 years ago
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