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Ronch [10]
3 years ago
14

Every kid in Mr. Levans's 3rd grade class made a valentine for every kid in the class, including themselves. If the class made a

total of 484 valentines, how many kids are in the class?
Mathematics
2 answers:
Yanka [14]3 years ago
6 0

Answer:

The answer is 22

Step-by-step explanation:

pshichka [43]3 years ago
3 0

Answer:

There are 56 students in the class

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Determine whether a quadratic model exists for the set of values below. If​ so, write the model. f(0) = -4, f(3) = -19, f(-1) =
Vikentia [17]

Answer:

  A) The model exists: f(x) = -3x^2 +4x -4

Step-by-step explanation:

A quadratic model will always exist for 3 given points, provided they are not on a line. In that case, a linear model is appropriate.

Here, the slope between -1 and 0 is positive, and the slope between 0 and 3 is negative. Thus, we know these points are not collinear, and a model must exist.

The model is most easily found using a quadratic regression tool. Such is shown in the attachment. It tells us that ...

  f(x) = -3x^2 +4x -4

7 0
2 years ago
Y = x2 - 6x - 8
Usimov [2.4K]

Answer:

I think type answer is A

3 0
3 years ago
Suppose that the weights of 5400 registered female Labrador retrievers in the United States are distributed normally with a mean
Maurinko [17]

Answer:

N= 4543 Labrador retrievers

Step-by-step explanation:

We know that the mean \mu is:

\mu = 62.5

and the standard deviation \sigma is:

\sigma=2.5

The probability that a randomly selected Labrador retriever weighs less than 65 pounds is:

P(X

We calculate the Z-score for X =65

Z = \frac{X-\mu}{\sigma}\\\\Z =\frac{65-62.5}{65}=1

So

P(X

Looking in the table for the standard normal distribution we have to:

P(Z.

Finally the amount N of Labrador retrievers that weigh less than 65 pounds is:

N = P(X

N = 0.8413*5400

N= 4543 Labrador retrievers

6 0
3 years ago
What triangle is it unique triangle, more than one triangle, or no triangle?
Sveta_85 [38]

Answer:

no triangle

Step-by-step explanation:

3 0
3 years ago
Which of the following would be the x-intercept and y-intercept of a line that is perpendicular to the line 3x+6y=0
Artist 52 [7]

Answer:

x-intercept : (0,0)

y-intercept : (0,0)

Step-by-step explanation: To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y.

Hope this helps you out! ☺

5 0
3 years ago
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