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Minchanka [31]
3 years ago
14

An urn contains eight blue balls and seven yellow balls. if six balls are selected randomly without being​ replaced, what is the

probability that of the balls​ selected, two of them will be blue and four of them will be​ yellow
Mathematics
1 answer:
Vlad1618 [11]3 years ago
8 0

to be sure that 2 of them will be blue i have to select 7+2=9 balls
7+8=15 balls in the urn
P=9/15

to be sure that 4 of them will be yellow i have to select 8+4=12 balls
P=12/15


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A rectangular box is 6 inches wide 10 inches long and 2 inches tall how much wrapping paper is needed to cover the box exactly
stepladder [879]

Answer:

184 in²

Step-by-step explanation:

Given :

Width, w = 6 inches

Length, l = 10 inches

Height, h = 2 inches

To obtain how much wrapping paper is needed ; we take the surface area of the box

Surface area = 2(lw + lh + wh)

Surface area = 2((6*10) + (6*2) + (10*2))

Surface area = 2(60 + 12 + 20)

Surface area = 2(92)

Surface area = 184 in²

The amount of wrapping paper needed = 184 in²

7 0
3 years ago
What polynomial function could be represented by the graph below
kotegsom [21]

Answer:

(B). F(X)=2x^2+2x-4

Step-by-step explanation:

-4 means it passes through -4 at the y axis

B and D have -4

graph passes thru x axis at -2 and 1

if you enter x = -2 or 1 in the formula

(B). F(X)=2x^2+2x-4

you get 0

it's not D because when you enter -2 or 1 for x

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3 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
IRISSAK [1]

1. √169 = √(13 · 13)  = 13

2. √169 = √(13 · 13)  = 13

3. √81 = √(9 · 9)  = 9

4. √225 = √(15 · 15)  = 15

5. √196 = √(14 · 14)  = 14

Answer: 4, 3, 1, 5, 2

3 0
3 years ago
Natalie and Juan collect marbles. The number of marbles that Natalie has is 4 more than
vekshin1

Answer:

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Step-by-step explanation:

8 0
4 years ago
Can someone give me the right answer for this please? I'm so confused
photoshop1234 [79]

Answer:

JK = 18

Step-by-step explanation:

LK = x - 1

KJ = x + 11

LJ = LK + KJ = x - 1 + x + 11

-> LJ = 2x + 10

LM = 12

By tangent secant segment theorem:

LK \times LJ = JM^2 \\  \\  \implies \: (x - 1)(2x + 10) =  {(12)}^{2} \\  \\  \implies \: x (2x + 10) - 1(2x + 10) =  144\\  \\  \implies \: 2x^{2}  + 10x - 2x  - 10 -  144 = 0\\  \\  \implies \: 2x^{2}  + 8x  -  154 = 0\\  \\  \implies \: 2(x^{2}  + 4x  -  77) = 0\\  \\  \implies \: x^{2}  + 4x  -  77 = 0\\  \\  \implies \: x^{2}  + 11x   - 7x-  77 = 0\\  \\  \implies \: x(x  + 11)   - 7(x + 11) = 0\\  \\  \implies \: (x  + 11)  (x - 7) = 0 \\  \\ \implies \: (x  + 11) = 0 \:  \: or \:  \:   (x - 7) = 0 \\  \\ \implies \: x   =  -  11 \:  \: or \:  \:   x  = 7 \\  \\ x \: can \: not \: be \: negative \\  \implies \: x \neq \:  - 11 \\  \\  \implies \: x = 7 \\  \\  \implies \: JK = x + 11 = 7 + 11 \\  \\ \implies \:  \huge \: { \orange{JK =18}}

Hope it helps you in your learning process.

Have a great day ahead.

4 0
2 years ago
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