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3 years ago

Which of the following can be formed when a plane intersects a cone? Select all that apply

Mathematics

2 answers:

Soloha48 [4]3 years ago

8 0

Answer:

Option 1 and 4 are correct.

Step-by-step explanation:

We are given with a Cone.

We have to find Shape of Cross section when cone is intersected with plane.

When Plane intersect the cone parallel to base, then the cross section obtain is of circular shape.

While plane intersect the cone with an angle then the cross section obtained is of parabola shape.

Therefore, Option 1 and 4 are correct.

neonofarm [45]3 years ago

4 0

Circle and Parabola.

Ellipse and Hyperbola are also other types of conic sections.

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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

3 years ago

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PLEASE HELP ME, I HAVE NO IDEA!

ivanzaharov [21]

b is 14 for sure

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3 years ago

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dmitriy555 [2]

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pantera1 [17]

Answer:

there are a total of 20 boys and 30 girls in the choir of 50 students

Step-by-step explanation:

Scale the ratio 2:3. so that the numbers on either side sum to 50 . 2+3=5 , and 50÷5=10 , so we scale our ratio by a factor of 10 . So there are a total of 20 boys and 30 girls in the choir of 50 students

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3 years ago

In an election, Mr. Jones received 70% of the 1,500 votes cast. How many votes did Mr. Jones receive?

Len [333]

Given situation: Mr. jones received 70% of the 1500 vote casts in an election Question and solution => How many votes did Mr Jones received: => 1 500 is the total number of voters and 70% of it voted Mr. Jones. SO let’s start solving to get the number of voters who voted him. => 70% = 70 / 100 = .70 => 1 500 * .70 => 1 050 , the number of voters who voted him in an election.

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3 years ago

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