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harina [27]
4 years ago
10

S=[E,F,G,H,J] identify the ways to select two members from s allowing the repetition

Mathematics
1 answer:
Fofino [41]4 years ago
8 0

Answer: There are 25 ways to select two members.

Step-by-step explanation:

Since we have given that

S={E,F,G,H,J}

Number of elements = 5

We need to select two members from S allowing the repetition.

We will use "Fundamental theorem of counting":

There are 5 choices for the first member.

There are 5 choices for the second member.

So, Number of ways would be

5\times 5\\\\=25

Hence, there are 25 ways to select two members.

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4.solve for x and y<br> pls help
DaniilM [7]

Answer:

x = 4\sqrt{3}

y = 8\sqrt{3}

Step-by-step explanation:

this is a 30-60-90 triangle and the sides have a constant ratio

the side across from the 30°∡ is 1

the side across from the 60°∡ is √3

the side across from the 90°∡ is 2

In this problem we can find 'x' by setting up this proportion:

x/12 = \sqrt{3}/1

cross-multiply:

\sqrt{3}x = 12

x = 12/\sqrt{3}

since we don't like to leave radicals in the denominator, we can multiply both numerator and denominator by \sqrt{3} to get:

12\sqrt{3} ÷ \sqrt{3}·\sqrt{3}    (\sqrt{3}·\sqrt{3} = \sqrt{9}, which equals 3)

so we have 12\sqrt{3}/3, which is 4\sqrt{3}

The 'y' value will be twice the 30° side, so 8\sqrt{3}

4 0
3 years ago
A bag of M&amp;M’s has 7 red, 2 green, 3 blue, and 8 yellow M&amp;M’s. What is the probability of randomly picking: (Round to 4
Nimfa-mama [501]

Answer:

Y = 40%

R or G = 25%

O = 0%

Step-by-step explanation:

Total M&M's = 7+2+3+8 = 20

PY = 8/20 = .4 or 40%

P(R or G) = (2+3)/20 = 5/20 = .25 = 25%

PO = 0/20 = 0%

8 0
3 years ago
Jesse earns $6 an hour babysitting for his younger brother. His mom gave him $71 last week. This included his babysitting money
slamgirl [31]

Answer:

8.5 hours

Step-by-step explanation:

Okay, so he made $71 last week including his $20 allowance. We can take out the allowance 71-20= 51 dollars made from babysitting. But they are asking us to find how many hours he worked.. knowing he gets paid $6 an hour we can divide 51/6 = 8.5 hours babysitting.

Hope this helps :)

7 0
3 years ago
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Nastasia [14]

First one:

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Inches (unit of measurement)

Ruler? (means of measuring)

10 (# of observations)

Second one:

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Pounds (unit of measurement)

Scale? (means of measuring)

8 (# of observations)

6 0
3 years ago
There are (4^9)^5 ⋅ 4^0 books at the library. What is the total number of books at the library?
nevsk [136]
(4^9)^5 * 4^0

4^45 * 1

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1.23794004E+27
7 0
3 years ago
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