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Nimfa-mama [501]
2 years ago
14

Find the sum of 5m 3n p, -5p 3n, and 2n - m. -4m 8n - 4p 4m 8n 4p 4m - 8n - 4p 4m 8n - 4p

Mathematics
1 answer:
Natali5045456 [20]2 years ago
8 0
4m+8n-4p+8m+16n+8p=12m+24n+4p
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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
2 years ago
Brainliest fir CORRECT answer ​
viktelen [127]

Answer:

y ≈ 5.2

Step-by-step explanation:

∠ F = 180° - (42 + 48)° ← sum of angles in a triangle

∠ F = 180° - 90° = 90°

Thus Δ DEF is right at F

Using the sine ratio in the right triangle

sin48° = \frac{opposite}{hypotenuse} = \frac{DF}{DE} = \frac{y}{7} ( multiply both sides by 7 )

7 × sin48° = y , then

y ≈ 5.2 ( to the nearest tenth )

4 0
2 years ago
Solve for x. PLEASE HELP ASAP
Paha777 [63]

Answer:

x = 6

Step-by-step explanation:

the tangent- tangent angle UVW is half the difference of the intercepted arcs, that is

∠ UVW = \frac{1}{2} (UW - WU ) , then

5x + 17 = \frac{1}{2} (37x + 5 - (23x - 5) ) ← multiply both sides by 2

10x + 34 = 37x + 5 - 23x + 5

10x + 34 = 14x + 10 ( subtract 14x from both sides )

- 4x + 34 = 10 ( subtract 34 from both sides )

- 4x = - 24 ( divide both sides by - 4 )

x = 6

7 0
2 years ago
PLEASE a help me (pre algebra)
irakobra [83]

Answer:

it's in order

1.   j: 71

2. j: 16

3. j: 10

4. j: 68

5. j: 61

4 0
2 years ago
Read 2 more answers
What’s 113% as a mixed number
Gemiola [76]

I don't know if this is what your looking for but 113% = 113/100 can be 1  13/100.

8 0
3 years ago
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