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TEA [102]
3 years ago
6

LeRoy ran a total of 15 miles last month. He ran 5/8 miles each day. How many days did he run?

Mathematics
1 answer:
svetlana [45]3 years ago
7 0

Answer:

24 days

Step-by-step explanation:

We wish to eliminate the unit of measurement "miles," ending up with the number of days on which LeRoy ran.

Recall that distance = rate times time.  Here

distance

-------------- = time

   rate

Plugging in the appropriate quantities (given in the problem statement),

     15 miles             15                    3

----------------------- = -------- days = -------- days = 24 days

  (5/8) (mi/day)        5/8                 1/8

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In a sample of 57 temperature readings taken from the freezer of a restaurant, the mean is 29.6 degrees and the population stand
Natalka [10]

Answer:

(29.14 ; 30.06)

Step-by-step explanation:

Given that'

Sample size (n) = 57

Mean (m) = 29.6

Population standard deviation (σ) = 2.7

Confidence interval = 80%

= (1 - 0.8) / 2 = 0.1

Mean ± z * σ/√n

Using the Z probability calculator : Z0. 1 = 1.28

Hence,

29.6 ± 1.28 * (2.7 / √57)

29.6 - (1.28 * 0.3576237) ; 29.6 + (1.28 * 0.3576237)

29.142241664 ; 30.057758336

(29.14 ; 30.06)

8 0
3 years ago
Please do this for me <br><br> I am very lazy
Alexandra [31]

First, let's turn all the numbers into improper fractions so that we can find the answer easier.

-2 \frac{1}{4} = r - \frac{4}{5}

-\frac{9}{4} = r - \frac{4}{5}

Now we have to isolate 'r'.

First, we have to make sure that the variable is on one side and all the numbers are on the other side.

To do this, we have to add \frac{4}{5} to both sides.

In order to do this, we need to ensure that both fractions have a common denominator.

-\frac{9}{4} = r - \frac{4}{5}

Ensure that the denominators are the same:

\frac{45}{20} = r - \frac{16}{20}

\frac{45}{20} + \frac{16}{20} = r

\frac{61}{20} = r

Good luck!

6 0
3 years ago
How can i get answer 5 for -10 - (+5) ?​
timama [110]

Answer:

- 10 - (-20 + 5)

Step-by-step explanation:

- 10 - (-20 + 5)

- 10 - (-15) = -10 + 15

-10 + 15 = 5

have a nice day and mark me brainliest! :)

4 0
3 years ago
Which expression are equivalent to -3(2w+6)-4
irga5000 [103]

Answer:

B. 2(-3w+(-11)

Step-by-step explanation:

-3(2w+6)-4=

-6w-18-4=

-6w-22=

2(-3w+(-11)

7 0
3 years ago
Unit cube:
Nutka1998 [239]

Answer:

12 unit cubes

Step-by-step explanation:

There are 4 unit cubes on each layer, and there are 3 layers as you can see. So 4 × 3 would equal 12.

8 0
2 years ago
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