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3 years ago

14

Name all the possible shapes the cross section can be for a cone?

1 answer:

rusak2 [61]3 years ago

4 0

Circle, Ellipse, Parabola, Hyperbola. Hope this helps

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Which of the following are irrational numbers?<br><br> 3.14<br> √ 5<br> 0.3333<br> √ -4<br> 1/9

Galina-37 [17]

Answer:

√ -4

Step-by-step explanation:

all square roots of negative numbers are irrational

6 0

3 years ago

Quadrilateral A’ B’ C’ D’ is a dilation of quadrilateral ABCD about point P with a scale factor of 2 and a half .

salantis [7]

It is an enlargement because the scale factor is 2 and a half

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3 years ago

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5.<br> The area of a circle is 40 mm²,<br> determine the circumference.

Naily [24]

Answer: the formula to find circumference is C=2times pie which is 3.14 times the radius. Radius is half of the diameter which in this case I believe would be 20 times that by 3.14 and get 62.8 then times that by two which gives you the answer of 125.6

Step-by-step explanation: correct me if I’m wrong

5 0

1 year ago

Denise is checking to determine if the expressions x + x + 6 and 4 + 3 x minus 2 are equivalent. When x = 4, she correctly found

miss Akunina [59]

Answer: hi

Step-by-step explanation:

7 0

3 years ago

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Sinea thinks that the fully factored form of the expression (x^4-1) is (x^2-1)(x^2+1). Is she correct? Explain.

iVinArrow [24]

Answer:

No. See below.

Step-by-step explanation:

$( {x}^{4} - 1)$

Use the following formula (Difference of Two Squares)

${x}^{2} - {y}^{2} = (x + y)(x - y)$

$( {x}^{4} - 1) = ( {x}^{2} + 1)( {x}^{2} - 1)$

We are not done yet. As we can still factor the expression which is x²-1 by using the same formula.

$( {x}^{2} + 1)(x + 1)(x - 1)$

This is the fully factored form.

3 0

3 years ago