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Westkost [7]
4 years ago
13

Ten cards are numbered from 1 to 10 and placed in a box. One card is selected at random and not replaced. Another card is random

ly selected. What is the probability of selecting two even numbers?
Mathematics
1 answer:
Yakvenalex [24]4 years ago
3 0
The probability of picking an even card the first time was 5/10, now that you have 9 cards the probability went down to 4/9.
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The width of a rectangle is 1 units less than the length. The area of the rectangle is 72 units. What is the width, in units, of
nalin [4]

A = l × w. Substitute 72 into A and fill in the rest of the equation.

w = l - 1. Plug l - 1 into w

72 = l × (l - 1). Multiply l by (l - 1)

72 = l^2 - l. Subtract 72 from each side.

0 = l^2 - l - 72. Factor.

0 = (l + 8) (l - 9). Set each term equal to zero.

(l + 8) = 0. Subtract 8 from each side.

l = -8. Length cant be a negative number so let's try the other term.

(l - 9) = 0. Add 9 to each side.

l = 9. The length is 9.

Earlier we stated that the width is one less than the length, therefore, the width is 9 - 1 = 8.

The width is 8 units.

8 0
3 years ago
3 cups 6oz + 2 cups 9oz
Liono4ka [1.6K]
1 cup is equal to 8 oz, so
3 cups x 8 = 24 oz.
you'll do the same for the two cups
2 x 8 = 16 oz
so adding them all together will be 
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4 0
3 years ago
Which of the following statistics would provide a good comparison between data sets?
White raven [17]

Answer:

ans is mean

Step-by-step explanation:

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8 0
3 years ago
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B
BabaBlast [244]

Answer:

328.5 cm

Step-by-step explanation:

Volume= L x W x H

10 x 4.5 x 7.3= 328.5

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6 0
3 years ago
What is the sum of the first 12 terms of the geometric series below 1/2+2+8+32+
Georgia [21]

∴\frac{1}{2} +2+8+32.......12^{th}term =2796202.5

Step-by-step explanation:

First term(a) = \frac{1}{2}   common ratio(r)     =\frac{2}{\frac{1}{2} }   =4

n= 12

S_{n}=\frac{a(r^n-1)}{(r-1)}

S_{12}=\frac{\frac{1}{2}(4^{12}-1) }{4-1} =2796202.5

∴\frac{1}{2} +2+8+32.......12^{th}term =2796202.5

5 0
4 years ago
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