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3 years ago

Find the value of x please help

Mathematics

1 answer:

Nezavi [6.7K]3 years ago

7 0

9514 1404 393

Answer:

x = 12

Step-by-step explanation:

The right triangles are all similar, so the ratios of long to short ides are the same:

x/6 = 6/3

x = 6(6/3) . . . multiply by 6

x = 12

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A person gets on and off a bathroom scale four times. The four readings (in pounds) are 148, 151, 150, and 152. Each time after

Ganezh [65]

Answer:

See explanation below

Step-by-step explanation:

Since each time after the person gets off the scale, the reading is 2 lb the person's weight must be near the mean of

148-2, 151-2, 150-2, 152-2; that is to say, near the mean of 146, 149, 148, 150 = (146+149+148+150)/4 = 148.25

We could estimate the uncertainty as the standard error SE

$\bf SE=\frac{s}{\sqrt{n}}$

where

s = standard deviation of the sample

n = 4 sample size.

Computing s:

$\bf s=\sqrt{\frac{(146-148.25)^2+(149-148.25)^2+(148-148.25)^2+(150-148.25)^2}{4}}=1.479$

So, the uncertainty is 1.479/2 = 0.736

It is not possible to estimate the bias, since it is the difference between the true weight and the mean, but we do not know the true weight.

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3 years ago

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Zolol [24]

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Step-by-step explanation:

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Suppose a furniture manufacturer ships their products to distributors in pairs (so there are two items sent in each box). The we

Allushta [10]

Your answer is.............B. Negative.

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2 years ago

Which inequality represents all values of x for which the quotient below is defined?

garri49 [273]

Answer:

Option B: x > 0

Step-by-step explanation:

Option A is wrong because $\sqrt{3(0)}$ will be 0. So, the inequality can't be divided by 0.

Option C is wrong because 1 will suffice this inequality. $\sqrt{7}/\sqrt{3}=1.5 (approx)$

Option D is wrong because any value in the root has to be greater or equal to 0 (otherwise, it's imaginary number). -1 will give the latter root a value of root-(-3).

Leaving us with only option B, which is the right answer.

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Answer:

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Step-by-step explanation:

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3 years ago