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viktelen [127]
3 years ago
11

A group of 15 explorers to the south pole had just enough food to last them for 40 days how long would the food last if all of a

sudden three explorers disappeared mysteriously
Mathematics
1 answer:
Trava [24]3 years ago
5 0

Answer:

3 days

Step-by-step explanation:

15-3=12

40/12= 3.3

round to 3

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The life of light bulbs is distributed normally. The variance of the lifetime is 900 and the mean lifetime of a bulb is 520 hour
Alex73 [517]

Answer:

0.969

Step-by-step explanation:

Given that:

Mean lifetime (m) = 520 hours

Variance = 900

Hence, standard deviation (s) = √900 = 30

Probability that bulb will last for at most 576 hours

X ≤ 576

Obtain the standardized score :

Using the relation :

Zscore = (x - m) / s

Zscore = (576 - 520) / 30

Zscore = 56 / 30

Zscore = 1.867

P(Z ≤ 1.867) : using the z probability calculator ;

P(Z ≤ 1.867) = 0.96905

Hence, P(Z ≤ 1.867) = 0.969

8 0
3 years ago
Find the slope (2,5) (-3,5)<br> Using the formula
icang [17]

Answer:

m = 0

Step-by-step explanation:

m=\frac{5-5}{-3-2}=\frac{0}{-5} =0

6 0
3 years ago
Tom the painter is painting window frames on a house. He knows that the angle his ladder should make with the ground should be b
Anna11 [10]

Answer:

Tom should use a ladder that is smaller or at the the same height of the window frame. Here it says that he is using a ladder that is taller than the window frame, and this can be very uncomfortable for the person who is using the ladder, so it would be recommendable for Tom to use a smaller ladder, probably a ladder that is only a few inches smaller or taller than the window frame. Using a ladder that is like this should be safe to use.

Step-by-step explanation:

Hope this helps =)

7 0
2 years ago
The main floor of Kinsey's home is 1,425 square feet. The upper level is 875 square feet with one unfinished bedroom that measur
kvv77 [185]

The reportable square footage for Kinsey's home = 2150square feet.

The main floor of Kinsey's home is 1,425 square feet.

The upper level is 875 square feet with one unfinished bedroom that measures 150 square feet.

The finished basement is 1,425 square feet with 7.5-foot ceilings.

That means the square footage of the upper floor plus the main floor (minus the unfinished laundry area).

Kinsey should report square feet (1425+875- 150)

= 2150square feet.

Hence, The reportable square footage for Kinsey's home = 2150square feet.

Learn more about square footage here brainly.com/question/25845997

#SPJ4

3 0
2 years ago
The following are 4 different shades of orange paint. The mixtures are given as ratios of yellow to red. Put in order from least
anyanavicka [17]

Answer:

D CA B

Step-by-step explanation:

4 0
2 years ago
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