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Usimov [2.4K]
3 years ago
12

Need help with these two questions

Mathematics
1 answer:
MAVERICK [17]3 years ago
5 0
744848848484848484848
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The product of two consecutive positive<br> integers is 2550. Find the smaller number.
Paha777 [63]

Answer:

50

Step-by-step explanation:

n (n + 1) = 2550

n^2 + n = 2550

n = 50

n + 1 = 51

8 0
2 years ago
5. Jack has decided to give away 20% of his
Brrunno [24]

Answer:

1280

Step-by-step explanation:

7 0
2 years ago
The following data pairs represent the average temperature x (in degrees Fahrenheit) and electricity
elena55 [62]

Answer:

<u>The correct answer is C. r = 0 because is most likely the closest to the correlation coefficient of the data.</u>

Step-by-step explanation:

Using Excel, we captured the data provided for the 12 different homes for calculating the correlation coefficient manually, this way:

n = 12

∑x = 904

∑y = 2,169

∑xy = 167,532

∑x² = 69,552

∑y² = 404,615

r =  [n *∑xy  - (∑x * ∑y)]/[√(n * ∑x² - (∑x)²) * (n * ∑y²  - (∑y)²)]

Replacing with the real values, we have:

r = [12 * 167,532  - (904 * 2,169)]/[√(12 * 69,552 - 904²) * (12 * 404,615  - 2,169²)]

r = [2'010,384  -1'960,776]/[√(834,624 - 817,216) * (4'855,380  - 4'704,561]

r = 49,608/√17,408 * 150,819

r = 49,608/ 51'239.215

r = 0.00097

<u>The correct answer is C. r = 0 because is most likely the closest to the correlation coefficient of the data.</u>

4 0
2 years ago
Read 2 more answers
For the function below, find the vertex, axis of symmetry, maximum or minimum value, and the graph of the function.
const2013 [10]
F(x) = x^2/2 + 2x + 1f(x) = 1/2 * (x^2 + 4x) + 1f(x) = 1/2 * (x^2 + 4x + 4) - 1/2 * (4) + 1f(x) = 1/2 * (x + 2)^2 - 1
The vertex is (-2, -1). The axis of symmetry is x = -2. The minimum value is -1. The maximum value is infinity.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

6 0
2 years ago
Read 2 more answers
A solution of the equation 3x + y = 15?
Tamiku [17]

Step-by-step explanation:

Since there is 2 unknown variable ,

so we need 2 equation to find their values.

8 0
1 year ago
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