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nevsk [136]
3 years ago
10

The answer please please A.45 B. 50 C.39.5 D. 47.5

Mathematics
1 answer:
7nadin3 [17]3 years ago
8 0

Answer:

D. area=47.5

Step-by-step explanation:

3.5+5+7+32

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What does 12 1/3 - 11 3/4
myrzilka [38]
2/3 is left over 

I hope this is the answer you are looking for.
6 0
3 years ago
Use the grouping method to factor the polynomial below completely.<br> +3 - 4x² + 3x - 12
ahrayia [7]

Answer:

The answer is “B”

Step-by-step explanation:

Group and factor out the greatest common factor (GCF), then combine.

3 0
3 years ago
A square patio has a side length of (x − 8) feet. It is surrounded by a flower garden with a uniform width. The side length of t
Andre45 [30]

9514 1404 393

Answer:

  32x ft²

Step-by-step explanation:

The area of the garden plus patio is ...

  (x +8)² = x² +16x +64

The area of the patio is ...

  (x -8)² = x² -16x +64

The area of the flower garden is the total area less the patio area:

  (x² +16x +64) -(x² -16x +64) = 32x . . . area of the flower garden

4 0
3 years ago
Suppose the lifetime, in years, of a motherboard is modeled by a Gamma distribution with parameters α=80 and λ=4. Use the Centra
timurjin [86]

Answer:

Therefore there's a 99.99% probability the motherboard of your new computer will last for at least 15 years.

Step-by-step explanation:

This is the general idea to solve the problem.

Suppose that the mean and variance of the your distribution are .\mu , \sigma respectively. Then, according to the problem you are looking for the probability.

P(X \geq 15) = 1 - P(X

Consider then the following random variable.

T  =   X_1 + X_2 + .... + X_{14}

Using the central limit theorem  T distribution will be close to normal, and its mean and variance will be  14\mu , 14\sigma  , respectively. Therefore you just have to find the probability that a normally distributed  random variable with that mean and that variance which I just mentioned is less than 14.

For this case we have that

\mu = \alpha / \gamma  = 20 \\\sigma = \alpha(\alpha+1) / \gamma^2  -  (\alpha/ \gamma)^2  = 5

Then you have that

14\mu = 280\\14\sigma = 70\\

and we have that if  N is a normally distributed random variables with mean 280 and variance 70 we have that

P(N \leq 14 ) = 0.0001

the actual probability we are looking for is

1-P(N\leq14) =  1-(0.0001) = 0.9999

Therefore there's a 99.99% probability the motherboard of your new computer will last for at least 15 years.

5 0
3 years ago
Please help !!!!!! Thank you
Lera25 [3.4K]

Answer:

<em>Result: 23</em>

Step-by-step explanation:

<u>Evaluating Algebraic Expressions</u>

Given an expression where variables (letters) are included, evaluate the expression at specific values of the variables means to substitute the values into the expression, operate, and give the final result.

The expression provided in the question is:

4m + 3

Evaluate at m=5

Substitute m for 5 recalling 4m really means 4*m, a product:

4*5 + 3 = 20 + 3 =23

3 0
3 years ago
Read 2 more answers
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