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OLEGan [10]
3 years ago
12

A jar of marbles has five blue marbles, three red marbles, and four green marbles. What is the possibility of drawing a marble t

hat is blue, and then, after replacing it, drawing a marble that is green?
5/36

1/6

1/4

11/36
Mathematics
2 answers:
solniwko [45]3 years ago
8 0

Answer:

5/36

Step-by-step explanation:

The chance of drawing a blue marble is 5/12. The chance of drawing a green marble is 4/12. You multiply the fractions to get the probability.

5/12 * 4/12 =20/144 = 5/36 simplified.

Reptile [31]3 years ago
4 0

Answer:

5/36

Step-by-step explanation:

12 total marbles

5/12 blue, 4/12 green

5/12x4/12=20/144

5/36

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In-s [12.5K]

Answer:

20 biscuits are made from 1 cup of biscuit mix.

Step-by-step explanation:

Divide 40 by 2 to get the unit rate, which is 20.

Hope this Helps!

5 0
3 years ago
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Are the two expressions equivalent when x = 5? 24x + 18 and 6 (4x + 2)
patriot [66]

Answer:

Nope-

Step-by-step explanation:

24x + 18 = 138

6 (4x + 2) = 132

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3 years ago
Explain when you know you need to rename avmakes numbers do you subtract
Ivan
Use what you know about subtracting whole numbers and fractions to subtract mixed numbers.
7 0
3 years ago
At which points are the tangents drawn to the ellipse x 2 + y 2 = [ a ] x + [ a ] y parallel to
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The given equation of the ellipse is x^2 + y^2 = 2 x + 2 y

At tangent line, the point is horizontal with the x-axis therefore slope = dy / dx = 0

<span>So we have to take the 1st derivative of the equation then equate dy / dx to zero.</span>

x^2 + y^2 = 2 x + 2 y

x^2 – 2 x = 2 y – y^2

(2x – 2) dx = (2 – 2y) dy

(2x – 2) / (2 – 2y) = 0

2x – 2 = 0

x = 1

 

To find for y, we go back to the original equation then substitute the value of x.

x^2 + y^2 = 2 x + 2 y

1^2 + y^2 = 2 * 1 + 2 y

y^2 – 2y + 1 – 2 = 0

y^2 – 2y – 1 = 0

Finding the roots using the quadratic formula:

y = [-(- 2) ± sqrt ( (-2)^2 – 4*1*-1)] / 2*1

y = 1 ± 2.828

y = -1.828 , 3.828

 

<span>Therefore the tangents are parallel to the x-axis at points (1, -1.828) and (1, 3.828).</span>

3 0
3 years ago
Match the area to each parallelogram and trapezoid.<br> brainliest
stealth61 [152]

Answer:

Area of first shape is 288ft^{2}, area of second shape is 45m^{2}, area of third shape is 34in^{2}.

Step-by-step explanation:

Area of first shape

A=bh

A=18*16

A=288

Second shape

A=bh

A=9*5

A=45

Third shape

A= 1/2 h(b1+b2)

A=1/24(12+5)

A=1/2*4(12+5)

A=1/2*4(17)

A=1/2*68

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8 0
3 years ago
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