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maksim [4K]
3 years ago
7

Suppose you choose a marble from a bag containing 3 red marbles, 3 white marbles, and 5 blue marbles. You return the first marbl

e to the bag and then choose again. Find P(red and blue). A.6/11 B.15/121 C.15/11 D.8/11
Mathematics
1 answer:
pav-90 [236]3 years ago
3 0

Answer:

B.15/121

Step-by-step explanation:

  • red-3
  • white-3
  • blue-5

total-11

  • P(red)= 3/11
  • P(blue)=5/11
  • P(red+blue)= 3/11*5/11= 15/121
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A palm tree casts a shadow that is 28 feet long. A 6-foot sign casts a shadow 8 feet long.
s2008m [1.1K]

Answer: The height of the palm tree is 21 feet.

Step-by-step explanation:

We can use a ratio to solve this:

Actual height to shadow for both objects. The fraction equivalents must be equal.

6/8 = x/28 . Cross multiply

6(28) = 8x

168 = 8x   Divide both sides by 8  (8's "cancel" on the right)

168/8 =8x/8

21 = x . This gives us the tree's height as 21 feet.

<em>Another way to solve this is to use the ratios, but simplify the first fraction</em>

<em>6/8 = 3/4</em>

<em>Then multiply the length of the shadow by 3/4</em>

<em>3/4 × 28 = height</em>

<em>28÷4 = 7    7 × 3 = 21</em>

<em>21  feet= the height of the palm tree.</em>

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3 years ago
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Answer:

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Step-by-step explanation:

1 since it's -1 inside it moves to the right

and it's positive 3 outside so it goes up 3

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3 years ago
Jonathan records how 90 pupils travelled to school on one day and represents this information on the pie chart below.
xeze [42]

Answer:

86.4

Step-by-step explanation:

First adding up all the percentages on the chart you get 360

Then figuring out what 24° of 360 is

You then get 86.4

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What do you call the second degre function?
Marina CMI [18]

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i think is Quadratic function

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