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4 years ago

What is the answer to this question

Mathematics

1 answer:

Archy [21]4 years ago

7 0

The answer is b because 1.95+.85+2.80 and 2.80 rounded to the nearest whole # is 3.

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What is formula of x+y.

notsponge [240]

Answer:

there is not any formula of x+y

4 0

3 years ago

What's the answer to this?

cestrela7 [59]

Answer: Its A because it has same angle which makes them connect the same

Step-by-step explanation:

5 0

3 years ago

Timber beams are widely used in home construction. When the load (measured in pounds) per unit length has a constant value ove

Delicious77 [7]

Answer:

a) 0.4

b) 0.133

c) $L \geq 99$

Step-by-step explanation:

We are given the following information in the question:

The load is said to be uniformly distributed over that part of the beam between 90 and 105 pounds per linear foot.

a = 90 and b = 105

Thus, the probability distribution function is given by

$f(x) = \displaystyle\frac{1}{b-a} = \frac{1}{105-90} = \frac{1}{15},\\\\90 \leq x \leq 105$

a) P( beam load exceeds 99 pounds per linear foot)

P( x > 99)

$=\displaystyle\int_{99}^{105} f(x) dx\\\\=\displaystyle\int_{99}^{105} \frac{1}{15} dx\\\\=\frac{1}{15}[x]_{99}^{105} = \frac{1}{15}(105-99) = 0.4$

b) P( beam load less than 92 pounds per linear foot)

P( x < 92)

$=\displaystyle\int_{90}^{92} f(x) dx\\\\=\displaystyle\int_{90}^{92} \frac{1}{15} dx\\\\=\frac{1}{15}[x]_{90}^{92} = \frac{1}{15}(92-90) = 0.133$

c) We have to find L such that

$\displaystyle\int_{L}^{105} f(x) dx\\\\=\displaystyle\int_{L}^{105} \frac{1}{15} dx\\\\=\frac{1}{15}[x]_{L}^{105} = \frac{1}{15}(105-L) = 0.4\\\\\Rightarrow L = 99$

The beam load should be greater than or equal to 99 such that the probability that the beam load exceeds L is 0.4.

4 0

4 years ago

How can i relate decimals to a place value chart

Nikolay [14]

Well ummm for example .9746 the 9 is in the tenths place the 7 is in the hundredths place the 4 is in the thousandths place the 6 is in the ten thousandths place

3 0

3 years ago

What is the minimum product of two numbers whose difference is 60? what are the numbers?

sergejj [24]

The minimum product would be a negative number with the maximum absolute value.
To get a negative number, the numbers must be opposite in sign.
The maximum absolute value would be attained when the two numbers have the same absolute value.

From the above, the minimum product would be -30 * 30 = -900.
(note 30-(-30)=60)

4 0

4 years ago