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g100num [7]
3 years ago
8

20 points

Mathematics
1 answer:
ohaa [14]3 years ago
6 0

Answer:

u put 20 points when its worth 5

Step-by-step explanation:

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number from 1 to 99 is written on a card making a pack of 99 cards. What is the probability of randomly selecting a card where t
andriy [413]

Answer:

(19/99) = 0.192

Step-by-step explanation:

Numbers 1 to 99, that is 99 numbers (obtained through the equation for the nth term of an AP)

L = a + (n-1) d

L = nth term = 99

a = first term = 1

n = number of terms = ?

d = common difference = 1

99 = 1 + (n-1)1

n = 99

Sample space = 99

The numbers that include at least, a 1 are

1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 31, 41, 51, 61, 71, 81, 91

19 numbers.

Probability of randomly selecting a card where the number contains at least one digit 1 from 1 to 99 = (19/99) = 0.192

Hope this Helps!!!

3 0
4 years ago
As students move to thinking about formulas it supports their conceptual knowledge of how the perimeter of rectangles can be put
kolezko [41]

Answer:

B. P=l+w

Step-by-step explanation:

Let l represent length of rectangle and w represent width of rectangle.

We have been given four formulas for the perimeter of rectangle. We are asked to choose the formula that displays a common student error for finding the perimeter.

We know that perimeter of a polygon is sum of all sides of the polygon. We also know that rectangle is polygon having two sets of equal sides.

The perimeter, P, of rectangle will be sum of its all sides that is:

P=l+w+l+w

Combine like terms:

P=2l+2w

Factor out 2:

P=2(l+w)

Upon looking at our given choices, we can see that formula represented by option B displays a common student error for finding the perimeter.

7 0
4 years ago
Describe how the graphs of y=1/2x +7 is the same and different from the graph of y= 12x + 7
TiliK225 [7]

Answer:

the slope of the line for y=12x+7 is steeper compared to the other equation

they both have the same y-intercept of y=7

Step-by-step explanation:

i just plugged it into desmos and looked at the graph

hope this helps <3

3 0
3 years ago
Can someone help me with this, please! I would really appreciate it if you do! I'm a little confused!
Dmitry_Shevchenko [17]
What is the w supposed to represent? i know that the first box should be $9 and the second one should be $22.50. not sure for the last one. also do you like my 80085?
8 0
3 years ago
What ratios are equal to 10:15​
Zielflug [23.3K]

Answer:

It is 2/3

Step-by-step explanation:

Divide 10 and 15 by 5 to get 2:3

7 0
3 years ago
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