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Snezhnost [94]
2 years ago
14

What is the theoretical probability of randomly choosing a blue marble from a bag of 5 blue marbles, 8 red marbles, and 7 yellow

marbles?
Mathematics
1 answer:
Burka [1]2 years ago
8 0

Answer:

25%

Step-by-step explanation:

There's a total of 5+8+7 = 20 marbles.

The chance of picking a blue marble is \frac{5}{20} =\frac{1}{4} =0.25=25%, as there's 5 blue marbles and a total of 20.

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the hypotenuse of a right angled triangle is 26cm, if the other side 24cm. find the length of the third side​
weeeeeb [17]

You need Pythagorean theorem for this.

a² + b² = c², where c is the hypotheneus and a and b are the sides of the right triangle.

24² + x² = 26²

x² = 676-576

x = ±√100

x = 10 (-10 is rejected because length of triangle cannot be a negative number)

3 0
2 years ago
Select the correct answer.
Mazyrski [523]

Answer:

i think correct answer is a

4 0
3 years ago
Victor claims that the opposite sides of the parallelogram are congruent. He writes the two- column proot helow to justify his c
Andrew [12]

Answer:

B,C,D(I'm not 100% sure about D, but 99.9% sure)

Step-by-step explanation:

hope this helps!

4 0
3 years ago
A research group wants to find the opinions’ of city residents on the construction of a new downtown parking garage. What is the
OLga [1]

Answer:

downtown workers

Step-by-step explanation:

The research group should do the survey with downtown workers in order to find the opinions for the construction of a new downtown parking garage in downtown. Since the workers need to commute to downtown for work by various modes such as buses, private vehicles, bicycles, taxis, share vehicles, etc., therefore the the research group will get maximum useful information from the downtown workers for the construction of a new parking garage.

Thus, option "downtown workers" is correct.

3 0
3 years ago
I need help with 14 and 15
Sidana [21]
14) -5(x+1)>20;
-5x-5>20;
-5x>20+5;
-5x>25 ;
-x>5
& x< - 5

15-1) 2.5+y < 7.5
y< 7.5 - 2.5
y<5 (answer c)

15-2) y/18<1/6 (cross multiplication):
6y<18
y < 3 (answer d)

15-3) y-1.5> - 0.5
y> - 0.5 +1.5
y> 1 (answer b)

15-4) -1.5y<4.5
- y < 4.5/1.5
- y< 3
y> -3 (answer a)
8 0
2 years ago
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