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user100 [1]
3 years ago
15

quien me ayuda explicando el proceso de realizar esta funcion cuadratica para encontrar el vertice y=−4x−5

Mathematics
1 answer:
irina1246 [14]3 years ago
8 0

Answer:

-9

Step-by-step explanation:

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Which property of equality was used to solve this equation?
HACTEHA [7]
Division property of equality. They are dividing -5 to both sides.
3 0
2 years ago
Factor completely: 2x^3 – 32x
anastassius [24]
2x^3-32x= \\
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7 0
3 years ago
A food company sells salmon to various customers. The mean weight of the salmon is 37 lb with a standard deviation of 2 lbs. The
brilliants [131]

Answer:

The standard deviation for the mean weigth of Salmon is 2/3 lbs for restaurants, 2/7 lbs for grocery stores and 1/4 lbs for discount order stores.

Step-by-step explanation:

The mean sample of the sum of n random variables is

\overline{X} = \frac{X_1+X_2+...+X_n}{n}

If X_1, ..., X_n are indentically distributed and independent, like in the situation of the problem, then the variance of X_1 + .... + X_n will be the sum of the variances, in other words, it will be n times the variance of X_1 .

However if we multiply this mean by 1/n (in other words, divide by n), then we have to divide the variance by 1/n², thus \overkine{X} = \frac{V(X_1)}{n} and as a result, the standard deviation of \overline{X} is the standard deviation of X_1 divided by \sqrt{n} .

Since the standard deviation of the weigth of a Salmon is 2 lbs, then the standard deviations for the mean weigth will be:

  • Restaurants: We have boxes with 9 salmon each, so it will be \frac{2}{\sqrt{9}} = \frac{2}{3}
  • Grocery stores: Each carton has 49 salmon, thus the standard deviation is \frac{2}{\sqrt{49}} = \frac{2}{7}
  • Discount outlet stores: Each pallet has 64 salmon, as a result, the standard deviation is \frac{2}{\sqrt{64}} = \frac{1}{4}

We conclude that de standard deivation of the mean weigth of salmon of the types of shipment given is: 2/3 lbs for restaurants, 2/7 lbs for grocery stores and 1/4 lbs for discount outlet stores.

7 0
2 years ago
Factor the expression below.<br> 4x2 - 1
Mila [183]

Answer:

(2x-1)(2x+1)

Step-by-step explanation:

the answer is c

4 0
3 years ago
Whats 3480+ 92719384
nikitadnepr [17]
92722864

Hope this helps ya
3 0
3 years ago
Read 2 more answers
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