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garik1379 [7]
3 years ago
12

You write each of the 26 letters of the alphabet on separate index cards.If you choose 2 cards at random without replacing them,

what is the probability that you will not draw an A? Round your answer to three decimal places.
Mathematics
1 answer:
son4ous [18]3 years ago
8 0

Answer:

25 to 1

Step-by-step explanation:

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Which of these graphs represents a function?
Likurg_2 [28]
Do you have any graphs because that would be more clear
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How many 1 2/3 are in 1 1/6​
Flura [38]

Answer:

7/10

Step-by-step explanation:

To find how many of x are y, you solve <em>y/x</em>.

With our numbers, we have <em>7/6 ÷ 5/3</em>.

We can turn that into <em>7/6 × 3/5</em> = <em>21/30</em> = 7/10.

5 0
3 years ago
How much of an alloy with 30% copper must be added to 25 pounds of a second alloy that is 20% copper to create a 27% alloy? 33.8
yuradex [85]

Answer:

58.33 lbs.

Step-by-step explanation:

There are already 25 lbs of alloy of copper

Of this 25 lbs, 20% is pure i.e. copper content = 25(0.5) = 5lbs.

Now available is

Copper      Other metals

5 lbs                20 lbs

Let x lb of 30% copper is added.

Then new alloy will have 5+0.3x lb copper in total of 25+x lbs

Percentage pure = \frac{5+0.3x}{25+x} =27%

Simplify to get

\frac{5+0.3x}{25+x} =\frac{27}{100} \\\\Cross multiply:\\27(25+x) =100(5+0.3x)\\500+30x =675 +27x\\3x = 175\\x = 175/3 = 58.33 lbs

Hence answer is 58.33 lbs should be added.



8 0
3 years ago
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Help me please The total number of students who could attend a field trip is represented by the variablet. The number of student
xz_007 [3.2K]

Answer:

1/4 +6<t-3

Step-by-step explanation:

the answer is tahta

6 0
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What is the MAD of this data ? Round to the nearest hundredth. 7, 14, 15, 9, 11, 14, 11, 10, 17​
Vladimir79 [104]
<h2>2.67</h2>

Step 1 :

Find the mean of the data :

(2+4+6+8) / 4 = 20/4 = 5

Step 2 :

Find the distance between each data and mean.

Distance between 2 and 5 is 3

Distance between 4 and 5 is 1

Distance between 6 and 5 is 1

Distance between 8 and 5 is 3

Step 3 :

Add all the distances :

3+1+1+3 = 8

Step 4 :

Divide it by the number of data :

8 / 4 = 2

2 is the average absolute deviation.

<h2>So hence, your answer is 2.67</h2>

"The beautiful thing about learning is that no one can take it away from YOU"

B.B.King

3 0
2 years ago
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