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4 years ago

The net of a triangular pyramid is shown.

Mathematics

1 answer:

alina1380 [7]4 years ago

5 0

Answer:

Step-by-step explanation:

because you need to multiply 6x4x3 divided by 3

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Sample of 3 items is selected at random from a box containing 20 items of which 4 aredefective. find the expected number of defe

azamat

That's 54 I think. 20x3=60-4=54

6 0

4 years ago

1. m+ 10< 16

sleet_krkn [62]

Answer:

$1.\ m$

Step-by-step explanation:

1. Subtract 10 from both sides. Then:

$m+ 10< 16\\ m+ 10-10< 16-10\\m$

2. Divide both sides by -2. Notice that the direction of the symbol of the inequality will change. Then:

$-2g\geq8\\\\\frac{-2g}{-2}\geq\frac{8}{-2}\\\\g\leq-4$

3. Add 22 to both sides. Then:

$y-22< 19\\ y-22+22$

4. Divide both sides by -7. Notice that the direction of the symbol of the inequality will change. Then:

$-7b>-28\\\\\frac{-7b}{-7}>\frac{-28}{-7}\\\\b$

5. Subtract 30 from both sides. Then:

$h+30$

6. Divide both sides by -5. Notice that the direction of the symbol of the inequality will change. Then:

$-5x$

7. Subtract 13 from both sides. Then:

$t+13>22\\ t+13-13>22-13\\t>9$

8. Add 12 to both sides. Then:

$w-12< 16\\ w-12+12$

7 0

3 years ago

2, 2, 2, 3, 4, 4, 11<br> What is the median of the seven data values shown?

Oduvanchick [21]

Answer:

Median is 3

Step-by-step explanation:

6 0

3 years ago

Ammeters produced by a manufacturer are marketed under the specification that the standard deviation of gauge readings is no lar

AURORKA [14]

Answer:

0.101

Step-by-step explanation:

Given that :

Standard deviation, s = 0.2

Sample variance, s² = 0.0653

Sample size, n = 10

Population variance = σ² = 0.04

We use the Chi square distribution :

(n - 1)s² / σ²

For P(s² ≥ 0.065)

(n - 1)s² / σ² = (10 - 1)*0.0653 / 0.04

(n - 1)s² / σ² = 0.585 / 0.04 = 14.625

P(s² ≥ 14.625) = 0.101 ( chi squee calculator).

8 0

3 years ago

A giraffe can run up to 46.93 ft. per second. How far could a giraffe run in 1.8 seconds? Justify your answer

frozen [14]

84.474 because 46.93(1.8) = 84.474

3 0

3 years ago