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Lana71 [14]
3 years ago
11

What is p (c) the probability that a key opens a classroom

Mathematics
1 answer:
Sedaia [141]3 years ago
8 0

Answer:

events over the sample space

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Solve the system of equations.<br> 7y + 10.x = -11<br> 4y - 3x = -15
Sidana [21]

Answer:

x= 1

y= -3

Step-by-step explanation:

multiply them to get common factor for y or x:

3(7y+10x=-11)

10(4y-3x=-15)

21y+30x=-33

40y-30x=-150    <em>x's cancel out so solve for y</em>

61y = -183

/61      /61

y = -3                 <em> insert y into either equation and solve for x</em>

<em />

<em>4(-3) -3x=-15</em>

<em>x = 1</em>

7 0
3 years ago
A traveler has $100 in united states bills and wishes to convert them to argentine pesos. the traveler checks a newspaper for th
Maksim231197 [3]
Based on the given values above, we can find the exchange rate by simply multiplying $100 by the given exchange rate figure of 900.50. And the answer for this one would be 90,050. Therefore, the rate that he would receive is 90,050. It is the third option. Hope this answers your question. Have a great day!
3 0
3 years ago
7x^2+3y^2+12x+2y-6=0 Help me find the value of a,b,c and the discriminant number
Mrac [35]

Answer:

b o a h d

Step-by-step explanation:

1*5 3%9 46% &45 that is the answer

7 0
1 year ago
David made a scale model of the Sam Houston Statue. The statue has an actual height of 67 feet. David's model used a scale in wh
Y_Kistochka [10]

Answer:

6.7 inches

Step-by-step explanation:

the statue is 67 feet tall, and in the replica, every inch is 10 feet. All you would need to do is move the decimal point to the left by one point.

7 0
2 years ago
It takes 20 minutes for 5 people to paint 5 walls.
Sergio039 [100]

Answer:

heres what i can find on the internet

Step-by-step explanation:

So, 5 walls = 4500 ft2 & since there are 5 people (all doing equal work) then each man paints 900 ft2 in 20 minutes. So, the total time is 20 minutes.

7 0
3 years ago
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