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faltersainse [42]
3 years ago
13

There are 60 marbles in a leather bag. Some of the marbles are blue, some are green, some are clear, some are gold, and some are

red. Based on experimental probability, there is a 1 in 5 chance of pulling out a blue marble. About how many blue marbles might be in the entire bag?
5 blue marbles
12 blue marbles
15 blue marbles
8 blue marbles
Mathematics
2 answers:
mr_godi [17]3 years ago
6 0

Answer:12 blue marbles

Step-by-step explanation:

I by 5 percent chance of blue marble

Let the number of blue marbles be x

X/60=1/5

5x=60

X=60/5

X=12

sweet-ann [11.9K]3 years ago
4 0

Answer:15

Step-by-step explanation:

TOOK THE TEST BRO SWEAR

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ohaa [14]
Y - 4x = 7...y = 4x + 7
now sub 4x + 7 in for y in the other equation
2y + 4x = 2
2(4x + 7) + 4x = 2
8x + 14 + 4x = 2
12x = 2 - 14
12x = - 12
x = -1

y - 4x = 7
y - 4(-1) = 7
y + 4 = 7
y = 7 - 4
y = 3

solution is : (-1,3)
7 0
3 years ago
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A car traveled 180 miles at a constant rate. Write an equation that would
Mnenie [13.5K]

Answer:

180/t = r

Step-by-step explanation:

In this question, we would have to write an equation that represents the scenario given.

We know that the car traveled 180 miles at a constant rate.

We would use the y = mx + b format for the equation, but replacing the variables with "r" and "t"

We know that 180 will be our y-variable, since that would be the base of the equation:

180 = ???

And to find how long/fast it will take the car, we would need to multiply the rate of speed "r" and time "t" in order to get our distance.

Plug it into the equation:

180 = rt

With this set up, you can find the rate of speed of the car when you know the time.

You would simply solve it as:

180/t = r

7 0
3 years ago
21.39 + 9=x ok this seems easy but I'm stuck it is supposed to= 30.39 how do you get that answer
Elodia [21]

Answer:

30.39

Step-by-step explanation:

ok, think of it like 21+9. That =s 30 right? so then add the .39 and you get 30.39.

3 0
3 years ago
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Maria has baked a cake for Cathy's birthday. The dimensions of the cake are 13 1/2 inches by 6 3/4 inches. The cake is going to
ycow [4]

Answer:

Step-by-step explanation:

Given:

Length = 27/4 in

Width = 27/2 in

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= 1/18 

Therefore, 18 equal squares of cake where 1 piece is 5.55 % of the cake

Since, the cake is twice as long as it is wide, so that means cut half the cake (27/4 × 27/4) into 9 pieces.

Therefore, each has a side of 1/3 * 27/4

= 9/4 inches.

8 0
3 years ago
Which ordered pair is the solution to the system of linear equations y = -7x + 2 and y = 9x - 14?
lisabon 2012 [21]
Y = -7x + 2
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solution is : (1,-5) <==
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3 years ago
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