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2 years ago

A bag contains 12 green cubes 5 blue cubes and 3 yellow cubes find each probability if you choose one at random

Mathematics

1 answer:

Mazyrski [523]2 years ago

4 0

Answer:

2/5

1/6

1/10

Step-by-step explanation:

total number of cubes = 12 + 5 + 3 = 20

Probability of picking green cubes = total number of green cubes / total number of cubes = 12/30 = 2/5

Probability of picking blue cubes = total number of blue cubes / total number of cubes = 5/30 = 1/6

Probability of picking yellow cubes = total number of yellow cubes / total number of cubes = 3/30 = 1/10

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54 people are competing in an athletic event. The top 4 competitors receive prize money, with 1st being worth more than 2nd, 2nd

Elanso [62]

Answer:

sets the size of the drawing paper. For size A drawing paper

7 0

2 years ago

What is the measurement of angle POR

IgorLugansk [536]

Let us observe the given figure,

When two lines intersect each other, the angles opposite to each other are Vertically Opposite Angles. Vertically opposite angles are always equal in measure.

As, we can observe that the given lines intersect each other, and they form vertically opposite angles as $\angle POR , \angle SOQ$ and $\angle POS , \angle ROQ$

Therefore, $\angle POR = \angle SOQ$

Substituting the given measures of the angles, we get

$91-x^\circ = x+ 7^\circ$

$91-7 = x + x$

$84 = 2x$

$x = \frac{84}{2}$

So, x = $42^\circ$

Since, the measure of angle POR = $(91-x)^\circ$

= $(91-42)^\circ$

= $49^\circ$

Therefore, the measure of angle POR is 49 degrees.

8 0

3 years ago

Please help me understand

puteri [66]

9514 1404 393

Answer:

D. 86°

Step-by-step explanation:

Points D and F divide the circle into two arcs. The long arc is labeled 274°, and the short arc is the one you're asked to find. You know the total of these two arcs is the full circle, 360°.

274° + DF = 360°

DF = 360° -274°

DF = 86°

There are other relationships you can use to find arc DF. One of the simpler ones is ...

DF and the external angle at E are supplementary:

DF = 180° -94° = 86°

5 0

3 years ago

If the radius of a right circular cylinder is doubled and height becomes 1/4 of the original height, then find the ratio of the

Oduvanchick [21]

Given info:-If the radius of a right circular cylinder is doubled and height becomes 1/4 of the original height.

Find the ratio of the Curved Surface Areas of the new cylinder to that of the original cylinder ?

Explanation:-

Let the radius of the right circular cylinder be r units

Let the radius of the right circular cylinder be h units

Curved Surface Area of the original right circular cylinder = 2πrh sq.units ----(i)

If the radius of the right circular cylinder is doubled then the radius of the new cylinder = 2r units

The height of the new right circular cylinder

= (1/4)×h units

⇛ h/4 units

Curved Surface Area of the new cylinder

= 2π(2r)(h/4) sq.units

⇛ 4πrh/4 sq.units

⇛ πrh sq.units --------(ii)

The ratio of the Curved Surface Areas of the new cylinder to that of the original cylinder

⇛ πrh : 2πrh

⇛ πrh / 2πrh

⇛ 1/2

⇛ 1:2

Therefore the ratio = 1:2

The ratio of the Curved Surface Areas of the new cylinder to that of the original cylinder is 1:2

6 0

2 years ago

What does K=Y/X stand for and mean?

Mamont248 [21]

Answer:

(k = y/x) which is the constant ratio between two proportional quantities y/x denoted by the symbol k which may be a positive rational number. The x value is directly proportional to the y value such as in the equation y = kx.

Step-by-step explanation:

the meaning of it means constant of proportionality

8 0

3 years ago