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3 years ago

12

The formula for the area of a trapeziod is A=1/2h(b1+b2), where b1 and b2 are both the bases and h is the height. Find the value

of h in terms A, b1, and b2. Justify your answer

1 answer:

Mice21 [21]3 years ago

7 0

Does it list what both of the bases are?

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In a recent test, you scored 1.0 standard deviations above the average score attained, and the scores are normally distributed.

sesenic [268]

Answer:

97.75 %

Step-by-step explanation:

You score 1 standard deviation above the mean

a) we have from left tail up to the mean 50 % of all values

b) We have in the interval [ μ - σ ; μ + σ ] 95.5 % of all possible values, if we divide that 95.5 by 2 we get 47.75 %, the part of the values that correspond to the right, then in order to get the % of students scored lower we add

50 + 47.75 = 97.75 %

So you can say that the porcentage of students that scored lower than you is 97.75 %

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laila [671]

Answer:

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2 years ago

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horsena [70]

Answer:

A. 720 per hour

Step-by-step explanation:

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3 years ago

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stich3 [128]

Answer: $\bold{log\ x=\dfrac{log\ P}{y}}$

<u>Step-by-step explanation:</u>

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$x^y=P\\\\log\ x^y=log P\\y\cdot log\ x=log\ P\\\large\boxed{log\ x=\dfrac{log\ P}{y}}$

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2 years ago

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galina1969 [7]

In the half-angle formula for sine and cosine, notice that a plus/minus sign appears in front of each radical (square root). Whether your answer is positive or negative depends on which quadrant the new angle (the half angle) is in

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