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VikaD [51]
3 years ago
7

Jackson decided to exercise. He has at most 45 minutes to exercise and he wants to burn at least 400 calories. He burns 10.4 cal

ories per minutes.
Mathematics
1 answer:
aleksklad [387]3 years ago
5 0

Answer:  38.46

Step-by-step explanation:

400/10.4= 38.46

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The speeds of cars on a given i street we are normally distributed with a mean of 72 miles per hour and a standard deviation of
Ostrovityanka [42]

Answer: 72.78% of the drivers are traveling between 70 and 80 miles per hour based on this distribution.

Step-by-step explanation:

Let X be a random variable that represents the speed of the drivers.

Given: population mean : M = 72 miles ,

Standard deviation: s= 3.2 miles

The probability that the drivers are traveling between 70 and 80 miles per hour based on this distribution:

P(70\leq X\leq 80)=P(\frac{70-72}{3.2}\leq \frac{X-M}{s}\leq\frac{80-72}{3.2})\\\\= P(-0.625\leq Z\leq 2.5)\ \ \ \ \ [Z=\frac{X-M}{s}]\\\\=P(Z\leq2.5)-P(Z\leq -0.625)\\\\\\ =0.9938-0.2660\ \ \ [\text{Using p-value calculator}]\\\\=0.7278

Hence, 72.78% of the drivers are traveling between 70 and 80 miles per hour based on this distribution.

3 0
3 years ago
6^3-4^2+17divide(x-4)
mr Goodwill [35]

Answer:

-54.25

Step-by-step explanation:

Just do it step by step and youll get the answer

5 0
2 years ago
What is 4(x 2) = 48 simplified?
Nookie1986 [14]
4(x 2)=48
4x+8=48
4x=40
x=10
6 0
3 years ago
Identify the domain and range of each relation. Use a mapping diagram to determine whether the relation a function.
Xelga [282]

Answer:

Domains- 6, 5, 1, 7

Ranges- -7, -8, 4, 5

6 0
3 years ago
Without solving the equations which answer best describes the solutions.
telo118 [61]
ANSWER:
D. The answers will be different because after distributing the 4 in the first equation it will change the values.

Hope it helps u!
6 0
2 years ago
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