2 years ago

Volume of 3D triangle

Mathematics

1 answer:

olga2289 [7]2 years ago

5 0

Remember the formula for calculating volume is: Volume = Area by height. V = A X h.

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A class consists of 55% bots and 45% girls. It is observed that 25% of the class are boys and scored an A on the test, and 35% o

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Answer:

0.1575

Step-by-step explanation:

Probability of picking a girl is 0.45 and probability of a girl scoring A is 0.35.

Therefore probability of a girl scoring A is 0.45*0.35=0.1575

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3 years ago

Simplify: 12÷12(4−6) A. 2 B. -2 C. 1 D. - 0.5

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12÷(-24)
-1/2
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3 years ago

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3 years ago

The diagonals of a rectangle are always perpendicular. A)True B)False

goblinko [34]

Answer:

Step-by-step explanation:

False. If L does not equal W the diagonals are not perpendicular. If L=W then they are perpendicular but that is a square and a special case which is not always true of a rectangle.

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2 years ago

Express the confidence interval 0.333less thanpless than0.555 in the form ModifyingAbove p with caret plus or minus Upper E. Mod

elena-14-01-66 [18.8K]

Answer:

The confidence interval is (0.444 ± 0.111).

Step-by-step explanation:

The general form of a confidence interval for single proportion is: $(\hat p- E$

The interval provided is: (0.333 < p < 0.555)

Then

$\hat p-E=0.333...(i)\\\hat p + E = 0.555...(ii)$

Solving the two equation simultaneously:

Add (i) and (ii),

$2\hat p=0.888\\\hat p=\frac{0.888}{2}\\ =0.444$

Substitute the value of $\hat p$ in (i) to compute the value of E:

$\hat p-E=0.333\\0.444-E=0.333\\E=0.444-0.333\\=0.111$

Thus, the confidence interval is,

$(0.444-0.111$

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2 years ago