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Tpy6a [65]
3 years ago
12

Al Dietrich is in training. He swims for 30 minutes, bicycles (10 mph) for 30 minutes, and runs (8 mph) for 30 minutes everyday.

How many calories is he burning with this training each day?
Mathematics
2 answers:
allochka39001 [22]3 years ago
5 0

Answer: 300 calories

Step-by-step explanation: let us assume that moving at any speed expends approximately 100 calories per mile. Moving a less-minute mile will burn a few more calories than moving a high-minute mile because of the added effort. Since the minutes for the 3 scenarios are the Same, then we can conclude that he is burning calorie at the same level in which the total equal to 300 calories

zhannawk [14.2K]3 years ago
3 0

Answer:

620

Step-by-step explanation:

(C= Calories)

8 x 20 =160c

11 x 20 =220c

12 x 20 =240c

160 + 220 + 240= 620 Calories

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ikadub [295]

Answer:

a) "This is an upper-tail test because the company wants to show the stands will hold 525 pounds (or more) easily."

b) "They will decide the stands are safe when they're not."

c) "They will decide the stands are unsafe when they are in fact safe."

Step-by-step explanation:

a) As the alternative hypothesis Ha is μ>575, the rejection region lays in the upper tail. Then, it is an upper-tail test.

They are testing the claim that the stand supports an average of 575 pounds or more, and are looking for statistical evidence for that claim.

"This is an upper-tail test because the company wants to show the stands will hold 525 pounds (or more) easily."

b)  A Type I error happens when a true null hypothesis is rejected.

This would mean that a stands that doesn't really hold 575 pounds or more has passed the test. The stand would appear more safe than it is.

"They will decide the stands are safe when they're not."

c) A Type II error happens when a false null hypothesis failed to be rejected. In this case, a safe stand, that suports 575 pounds or more, does not pass the test.

"They will decide the stands are unsafe when they are in fact safe."

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3 years ago
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What point he plot to show how far he runs in 8 minutes and 12 minutes?​
Dmitriy789 [7]

Answer:

4

Step-by-step explanation:

because you subtract it.

8 0
3 years ago
- 4 x + 9 = 21 x=___ help
faust18 [17]
X=-3
because
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-4x= 12 divide both sides
x=-3
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