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3 years ago

Can somebody help me with this math problem?

Mathematics

2 answers:

erik [133]3 years ago

6 0

The most logical situation would be A, the hiker starts at -10 feet the increases by 10 feet.

B. is close to A. but it wouldn't explain how the hiker stops at 0 feet. It'll just explain how he decreases by 10 feet going down to -20 feet

C. would be the same way w/ B. but now the elevation is above sea level and not below

D. however might confuse you into thinking that it is the correct answer because of the hiker starting at 0 feet. D. describes the hiker at 0 feet but then describes him increasing by 10 feet.

I hope this helps

Lilit [14]3 years ago

3 0

Since the altitude OF sea level is 0, and the hiker in Death Valley is below sea level, the equation you would write would be :
-10 + 10. This is because the joker went from BELOW sea level, to the altitude OF sea level.
So, the answer should be A

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Solve the inequality

Lana71 [14]

3x-12>15
3x>15+12
3x÷3>27÷3
x>9

7 0

3 years ago

A manufactured product has a length that is normally distributed with a mean of 12 cm. The product will be unusable if the lengt

Sav [38]

Answer:

a) σ = 0,1612

b) P [ 11,75 < X < 12,35] = 0,92,44 or 92,44 %

Step-by-step explanation:

NOTE: I assume the unusable length s 11,5 and less

a) For a normal distribution, the probability of P = 0,01 corresponds to z(score) = -3,1 then:

- 3,1 = ( X - μ₀ ) / σ

- 3,1 = (11,5 - 12 )/ σ

-3,1 = - 0,5 / σ

σ = 0,1612

b) If σ = 0,1612

P [ 11,75 < X < 12,35]

z₁ (score) = ( 11,75 - 12 ) / 0,1612

z₁ = - 0,25/ 0,1612

z₁ = -1,55

From z table P [ 11,75 < X] = 0,0606

z₂ (score) = ( 12,35 - 12) / 0,1612

z₂ = 0,35 / 01612

z₂ = 2,17

From z table P [ X < 12,35] = 0,9850

Finally P [ 11,75 < X < 12,35] = 0,9850 - 0,0606

P [ 11,75 < X < 12,35] = 0,92,44 or 92,44 %

5 0

3 years ago

The triangular-shaped bases of a prism are 24 cm in length and have a height of 35 cm. Each side is 37 cm. The height of the pri

Savatey [412]

Answer:

The surface area of Triangular base Prism = 3682 cm²

Step-by-step explanation:

Given in question as :

For a Triangular base prism ,

The base of prism (b) = 24 cm

The height of prism (l) = 29 cm

Each side length (s) = 37 cm

The height of base triangle ( h ) = 35 cm

Hence , we know that The surface area of Triangular base prism is

= (b×h) + (2×l×s) + (l×b)

= (24×35) + (2×29×37) + (29×24)

= (840) + (2146) + (696)

= 3682 cm²

Hence The surface area of Triangular base Prism is 3682 cm² Answer

3 0

2 years ago

I NEED HELP ASAP 17 points and BRAINLIEST!!!!!!!!!!

guajiro [1.7K]

Answer:

1st 3rd and 4th

Step-by-step explanation:

I just did that

7 0

3 years ago

College freshmen took a psychology exam. If the mean is 80, the SD is 10, and the scores have normal distribution, what percent

gayaneshka [121]

Answer:

(a) 2%

Step-by-step explanation:

A score of 60 is 2 standard deviations below the mean (80 -2·10 = 60). The empirical rule tells you that 95% of the distribution is within 2 standard deviations of the mean. The remaining 5% is split evenly between those that are more than 2 SD above the mean and those that are more than 2 SD below the mean.

That tells you the percentage who failed is about 2.5%. The best answer choice is 2%.

_____

<em>Additional comment</em>

The empirical rule is a little bit sloppy, but it gets you in the ballpark. The actual percentage is closer to 2.275%.

6 0

2 years ago