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mr_godi [17]
3 years ago
9

The input of days results in the output of total collected books. On day 1, 8 books were collected. Both inputs for days 2 and 3

have the same output of 13, meaning that no books were collected for day 3. After 5 days, 21 books were collected. The most books were collected on day 5.
Mathematics
1 answer:
Paul [167]3 years ago
5 0
Among 34- to 39-year-olds, 32% say they have driven while under the influence of alcohol. Suppose that seven 34- to 39-year-olds are selected at random.

a)What is the probability that all seven have driven while under the influence of alcohol?

(b) What is the probability that at least one has not driven while under the influence of alcohol?

(c) What is the probability that none of the seven has driven while under the influence of alcohol?
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Fill in the blank: in the table of exponential function,————————- by the same amount each time to get to the next number
Aliun [14]

Answer:

multiply

Step-by-step explanation:

5 0
3 years ago
The sum of a number and its reciprocal is 5/2 Find the number and its reciprocal.
sergiy2304 [10]

Answer:

Step-by-step explanation:

Let the number be 'x'

Reciprocal = \frac{1}{x}

x+\frac{1}{x}=\frac{5}{2}\\\\\frac{x*x}{1*x}+\frac{1}{x}=\frac{5}{2}\\\\\frac{x^{2}+1}{x}=\frac{5}{2}

Cross multiply

(x² + 1) *2 = 5*x

2x² + 2 = 5x

2x² - 5x + 2 =0

Factorize the equation,

Sum = -5

Product = 4

Factors = -1 , -4

2x² - x - 4x + 2 = 0

x(2x - 1) - 2(2x - 1) = 0

(2x -1 )(x - 2) = 0

2x - 1 = 0               ; x -2 = 0

    2x =1                ; x = 2

       x = 1/2

Number = 2 , and its reciprocal = 1/2

6 0
3 years ago
What is the value of x for 7x - 12 y = 180 / 7x = 84
katrin2010 [14]

eq^2: 7x=84 divide 84 by 7 which is 12.

therefore x is equal to 12. Then

1) take that 12 you got in equation 2 and substitute in equation 1 which is:

7x-12y=180

7(12)-12y=180

84 -12y=180

-12y=180-84

-12y=96 ............divide both sides with -12

-y=8 (×-1) both sides

y= -8

therefore 7(12)-12(-8)=180

5 0
3 years ago
What is the perimeter of a trapezoid?Units
Elan Coil [88]
20 units





Perimeter =add up all sides.




Perimeter = 5+1+5+9

=20 units
5 0
3 years ago
PLEASE ANSWER THIS QUESITON !! WILL GIVE BRAINLIEST !!
Scilla [17]

Answer:

26

Step-by-step explanation:

You can determine the slant height of this cone by forming a right triangle with the radius, and height. Therefore, the slant height is:

sqrt(10^2 + 24^2) = sqrt676 = 26

4 0
3 years ago
Read 2 more answers
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