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RSB [31]
2 years ago
12

I need help for these questions please

Mathematics
1 answer:
Marat540 [252]2 years ago
7 0
A) 90-55=35 since a right angle is 90 total\
b)ii
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Round 24.5834 to 2 decimal places
weqwewe [10]

Answer:

24.58

Step-by-step explanation:

3 0
3 years ago
The length of human pregnancies from conception to birth varies according to an approximately normal distribution with a mean of
Varvara68 [4.7K]

Answer:

A) 68.33%

B) (234, 298)

Step-by-step explanation:

We have that the mean is 266 days (m) and the standard deviation is 16 days (sd), so we are asked:

A. P (250 x < 282)

P ((x1 - m) / sd < x < (x2 - m) / sd)

P ((250 - 266) / 16 < x < (282 - 266) / 16)

P (- 1 < z < 1)

P (z < 1) - P (-1 < z)

If we look in the normal distribution table we have to:

P (-1 < z) = 0.1587

P (z < 1) = 0.8413

replacing

0.8413 - 0.1587 = 0.6833

The percentage of pregnancies last between 250 and 282 days is 68.33%

B. We apply the experimental formula of 68-95-99.7

For middle 95% it is:

(m - 2 * sd, m + 2 * sd)

Thus,

m - 2 * sd <x <m + 2 * sd

we replace

266 - 2 * 16 <x <266 + 2 * 16

234 <x <298

That is, the interval would be (234, 298)

6 0
3 years ago
2. If you know the volume of a cube, how do you find its<br> edge length?<br> nel
MakcuM [25]

\huge\boxed{\sqrt[3]{\text{V}}}

The volume of a cube is found by cubing the edge length — or multiplying it by itself twice.

In other words, the volume of a cube is as follows:

V=e*e*e

Simplified:

V=e^3

To find the edge length from the volume, you'd have to do the opposite, which is to find the cubic root.

3 0
3 years ago
Tell me 3 mathematical things that you know in relation to geometry
sweet [91]

Answer:

Dilations which reduce or enlarge an object. Translations which move the object from one part on the graph to another. I have also learned about how to construct a perpendicular bisector.

Step-by-step explanation:

7 0
3 years ago
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Aproxima a las unidades de mil y obtén los resultados estimados
zhenek [66]

Answer:

hi

Step-by-step explanation:

4 0
2 years ago
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