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Marianna [84]
3 years ago
9

Calculate Alberts average speed time:12 minutes distance:100 meters

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
4 0
8.33333333 meters a minute
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121 is 55% of what number
Wewaii [24]
Let x be the unknown number
x×55%=121
x=121÷55%
x=220
So 121 is 55% of 220
3 0
3 years ago
762-332 using rounding or compatible numbers to estimate
Nina [5.8K]
Maybe 430 or 400 could be the answer to that problem
8 0
2 years ago
Suppose that 40 percent of the drivers stopped at State Police checkpoints in Storrs on Spring Weekend show evidence of driving
lesantik [10]

Answer:

a) 0.778

b) 0.9222

c) 0.6826

d) 0.3174

e) 2 drivers

Step-by-step explanation:

Given:

Sample size, n = 5

P = 40% = 0.4

a) Probability that none of the drivers shows evidence of intoxication.

P(x=0) = ^nC_x P^x (1-P)^n^-^x

P(x=0) = ^5C_0  (0.4)^0 (1-0.4)^5^-^0

P(x=0) = ^5C_0 (0.4)^0 (0.60)^5

P(x=0) = 0.778

b) Probability that at least one of the drivers shows evidence of intoxication would be:

P(X ≥ 1) = 1 - P(X < 1)

= 1 - P(X = 0)

= 1 - ^5C_0 (0.4)^0 * (0.6)^5

= 1 - 0.0778

= 0.9222

c) The probability that at most two of the drivers show evidence of intoxication.

P(x≤2) = P(X = 0) + P(X = 1) + P(X = 2)

^5C_0  (0.4)^0  (0.6)^5 + ^5C_1  (0.4)^1  (0.6)^4 + ^5C_2  (0.4)^2  (0.6)^3

= 0.6826

d) Probability that more than two of the drivers show evidence of intoxication.

P(x>2) = 1 - P(X ≤ 2)

= 1 - [^5C_0  (0.4)^0  (0.6)^5 + ^5C_1  (0.4)^1  (0.6)^4 + ^5C_2 * (0.4)^2  (0.6)^3]

= 1 - 0.6826

= 0.3174

e) Expected number of intoxicated drivers.

To find this, use:

Sample size multiplied by sample proportion

n * p

= 5 * 0.40

= 2

Expected number of intoxicated drivers would be 2

7 0
2 years ago
A car traveled 150 miles on 5 gallons of gas. Find the unit rate.
Sauron [17]

Answer:

30m per gallon

Step-by-step explanation:

150m/5g= 30m/g

8 0
2 years ago
Which of these is the absolute value parent function?
kotykmax [81]

Answer:

Option d. is correct answer.

Step-by-step explanation:

<em>f(x) = [x]</em><em> </em>is the absolute value parent function.

7 0
3 years ago
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