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2 years ago

There are 6 blue marbles, 4 green marbles, and 2 red marbles. You choose 2 marbles. What is the chance that they will be blue?

Mathematics

1 answer:

kogti [31]2 years ago

5 0

Answer:

0.0152 probability

Step-by-step explanation:

first there are 12 marbles: odds are 2/12 = 1/6

Then, there are 11 marbles: odds are 1/11

So the odds of both of them being blue are: 1/6 * 1/11 = 0.0152

Please give brainliest thanks!

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Ugo [173]

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Step-by-step explanation:

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2 years ago

Find the radius of a circle having area 616cm square.

OLEGan [10]

Answer:

$\boxed{\sf Radius \ of \ circle = 14 \ cm}$

Given:

Area of circle = 616 cm²

To Find:

Radius of circle

Step-by-step explanation:

$\sf \implies Area \ of \ circle = \pi r^{2} \\ \\ \sf \implies 616 = \frac{22}{7} \times {r}^{2} \\ \\ \sf \implies 616 \times \frac{7}{22} = {r}^{2} \\ \\ \sf \implies 28 \times \cancel{22} \times \frac{7} { \cancel{22}} = {r}^{2} \\ \\ \sf \implies 28 \times 7 = {r}^{2} \\ \\ \sf \implies 196 = {r}^{2} \\ \\ \sf \implies {r}^{2} = 196 \\ \\ \sf \implies r = \sqrt{196} \\ \\ \sf \implies r = \sqrt{ {14}^{2} } \\ \\ \sf \implies r = 14 \: cm$

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2 years ago

Evan's odometer reads 44,965.3 miles. His car is four years old. On average, how many miles does Evan drive each year? Round you

Digiron [165]

Evan drives about 11241 miles each year

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2 years ago

6x − y + z = −3<br> 4x − 3z = −13<br> 2y + 5z = 15<br> Find the solutions?

Alla [95]

Answer:

The solution of the equation are x = - 1 , y = 0 and z = 3

Step-by-step explanation:

Given three linear equation as :

6 x - y + z = - 3 ......A

4 x - 3 z = - 13 ......B

2 y + 5 z = 15 ......C

Solving eq A and C

I.e 2× (6 x - y + z ) = -3 ×2

or, 12 x - 2 y + 2 z = - 6

So, ( 12 x - 2 y + 2 z ) + ( 2 y + 5 z) = - 6 + 15

Or, 12 x + 7 z = 9 ......D

Solving eq B and D

I.e 3 × ( 4 x - 3 z ) = - 13 × 3

or, 12 x - 9 z = - 39

So, ( 12 x + 7 z ) - ( 12 x - 9 z ) = 9 + 39

or, 16 z = 48

∴ z = $\frac{48}{16}$

i.e z = 3

put the value of z in eq D

So, 12 x + 7×3 = 9

Or, 12 x = 9 - 21

or, 12 x = - 12

∴ x = - $\frac{12}{12}$

I.e x = - 1

Now, Put The value of z in eq C

or, 2 y + 5 z = 15

or, 2 y + 5 × 3 = 15

Or, 2 y = 15 - 15

or, 2 y = 0

∴ y = 0

Hence The solution of the equation are x = - 1 , y = 0 and z = 3 Answer

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3 years ago

Find the missing dimension of the following parallelogram.

Scrat [10]

Answer:

21 (PLEASE GIVE BRAINLIEST)

Step-by-step explanation:

we have the base, but we need the height

we will find it using the area:

height = 336 / 16 = 21

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2 years ago