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2 years ago

14

There is a bag filled with 3 blue, 4 red and 5 green marbles. A marble is taken at random from the bag, the colour is noted and

then it is replaced. Another marble is taken at random. What is the probability of getting exactly 1 green?

1 answer:

aliina [53]2 years ago

8 0

Answer:

i think the answer is 9.

Step-by-step explanation:

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you are building a rectangular wading pool you want the area of the bottom to be 90 ft squared you want the length of the pool t

katrin2010 [14]

We can form a system of equations:
x*y=90
and
x=2y+3.
Solving gives dimensions of 15 feet by 6 feet.

8 0

2 years ago

What is the value of the expression<br> Зр divided by8 + 4 when p is 32?

Otrada [13]

Answer:

-4

Step-by-step explanation:

Divide each side by '-1'.

p = -4

Simplifying

p = -4

4 0

2 years ago

Solve this linear system by graphing <br> x-y=6 <br> 2x=12+2y

lys-0071 [83]

You need to isolate the variables. For the first equation add x to both sides, which leaves you with y.

For the second equation, divide each side by 2 leaving you with
x= 6+y. Subtract y from each side. Subtract x from both sides. Now you have y= x + 6.

Now graph those equations.

5 0

2 years ago

Can I have somebody answer a few more of the questions that I need please and this one too?

tankabanditka [31]

Answer:

x > 22

Step-by-step explanation:

<em>Hey there!</em>

Well to solve,

52 - 3x < -14

we need to single out x

52 - 3x < -14

-52 to both sides

-3x < -66

Divide both sides by -3

x > 22

The < changes to > because the variable number is a - being divided.

<em>Hope this helps :)</em>

7 0

2 years ago

Read 2 more answers

The sum of the lengths of two opposite sides of the circumscribed quadrilateral is 10 cm, and its area is 12 cm2. Find the radiu

PtichkaEL [24]

Answer:

1.2 cm

Step-by-step explanation:

The area of sircumscribed quadrilateral over a circle is equal to

$A=s\cdot r,$

where s is semi-perimeter of the quadrilateral and r is the radius of the circle.

Use property of circumscribed quadrilateral: The sums of the opposite sides are equal.

So, if the sum of two opposite sides of the circumscribed quadrilateral is 10 cm, then the sum of another two sides is also 10 cm and the perimeter of the quadrilateral is 20 cm. Hence,

$s=\dfrac{20}{2}=10\ cm$

Now,

$A=s\cdot r\\ \\12=10r\\ \\r=\dfrac{12}{10}=1.2\ cm$

8 0

2 years ago