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Elza [17]
2 years ago
7

Who can Help???

Mathematics
2 answers:
rosijanka [135]2 years ago
8 0









I'm not the best at writing, but I can try. so here's an idea:you can have as your scenario something like "On a vase shaped like a rectangular prism is a flower. Knowing that the stem of the flower is the diagonal of the prism, the diagonal of the base is 18 and the sinus of the angle between the stem and the diagonal(of the base) is 4/5, find the stem's length and the height of the vase"
GrogVix [38]2 years ago
3 0

Answer:

Answer:

Part 1: you know the height of the latter and the distance of the slide to the latter, but you don't know the length of the slide that needs to be replaced due to being broken.

i used a slide. the height of a ladder is 10 ft, the distance from the ladder and the end of the slide is 20 ft. so you needed to find the length of the slide to complete your "triangle".

i cannot add a picture so i hope you can work with that. you can also alter the numbers so that it isnt the same when you turn it in (turnitin will detect if another student put this answer) so i suggest altering the numbers.

here is my work:

10^2 + 20^2 = x^2

100 + 400 = x^2

500 = x^2

√500 = 22.360679775

22.360679775 = 22.3

x= 22.3

So the slide is about 22 feet long.

<u><em>please mark crown <3</em></u>

<u><em /></u>

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The sum of eight and two, subtracted from x<br> a. x + (8 - 2)<br> b. x - (8 + 2)
Lesechka [4]
Answer B is correct. Sum is the answer to an addition problem, so sum of 8 and 2 would be 8+2.
7 0
3 years ago
Is there some one who can help me please
lesya692 [45]

Answer:

I'd say $18

Step-by-step explanation:

I cant really tell, but your best guess is $18

6 0
3 years ago
Someone please help me with these. I forgot how to do these. Need within a hour
Pavlova-9 [17]

Answer: same

Step-by-step explanation:

3 0
2 years ago
The number of major earthquakes in a year is approximately normally distributed with a mean of 20.8 and a standard deviation of
SCORPION-xisa [38]

Answer:

a) 51.60% probability that in a given year there will be less than 21 earthquakes.

b) 49.35% probability that in a given year there will be between 18 and 23 earthquakes.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 20.8, \sigma = 4.5

a) Find the probability that in a given year there will be less than 21 earthquakes.

This is the pvalue of Z when X = 21. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{21 - 20.8}{4.5}

Z = 0.04

Z = 0.04 has a pvalue of 0.5160.

So there is a 51.60% probability that in a given year there will be less than 21 earthquakes.

b) Find the probability that in a given year there will be between 18 and 23 earthquakes.

This is the pvalue of Z when X = 23 subtracted by the pvalue of Z when X = 18. So:

X = 23

Z = \frac{X - \mu}{\sigma}

Z = \frac{23 - 20.8}{4.5}

Z = 0.71

Z = 0.71 has a pvalue of 0.7611

X = 18

Z = \frac{X - \mu}{\sigma}

Z = \frac{18 - 20.8}{4.5}

Z = -0.62

Z = -0.62 has a pvalue of 0.2676

So there is a 0.7611 - 0.2676 = 0.4935 = 49.35% probability that in a given year there will be between 18 and 23 earthquakes.

5 0
3 years ago
1- (-6k + 6) &lt; 3k +1 + 5k
rjkz [21]

Answer:

k>5/14

Step-by-step explanation:

4 0
3 years ago
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