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r-ruslan [8.4K]
2 years ago
10

Dave spent 21 minutes completing a race. He walked 9 minutes and jogged the rest. What

Mathematics
1 answer:
nasty-shy [4]2 years ago
6 0
Dave jogged for 9 minuets and walked for 12 minuets
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A light bulb manufacturer claims that the lifetime of the bulbs is normally distributed with a mean of 5000 hours and a standard
daser333 [38]

Answer:

88

Step-by-step explanation:

8 0
3 years ago
A regular number cube is rolled. What is the probability that an odd number will not be rolled?
mixer [17]

Answer:

1/2

Step-by-step explanation:

A regular die has 3 odd numbers (1, 3, and 5) and 3 even numbers (2, 4, and 6). The question asks for the probability that an odd number will not be rolled. This is the same as asking the probability of an even number being rolled. Since we have 6 numbers in our data set and 3 are even, we can deduce that 1/2 of them are even and the probability of an even number being rolled is 1/2.

HTH :)

5 0
3 years ago
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Can I please get some help! thank you!
Lady bird [3.3K]

Answer:

1234?:177997 +1mde explicaciones pero te digo algo es 1 explicasion

3 0
2 years ago
252 calories in 4 servings is how many calories per serving?
Lelu [443]

Answer:

63 calories

Step-by-step explanation:

Divide the number of calories by the number of servings

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252/4

63

So, there are 63 calories per serving

Hope this helps!

8 0
3 years ago
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Which choice shows the result of substituting 3x – 5 into the second equation for y?
ahrayia [7]

Answer:  The answer is (B) 2x + 3(3x – 5) = 51 .

Step-by-step explanation:  We are given three options and we are to select which choice shows the result of substituting 3x – 5 into the second equation for y.

So, y = 3x - 5.

Since the standard form of a linear equation i two variables is ax + by = c, so the second equation as given in the options must be of the form 2x + 3y = 51.

If we substitute y = 3x - 5, then this equation becomes

2x + 3(3x - 5) = 51.

Thus, (B) 2x + 3(3x – 5) = 51  is the correct option.

5 0
2 years ago
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