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3 years ago

Which term describes the red curve in the figure below?

Mathematics

2 answers:

aev [14]3 years ago

7 0

Answer: Option A. Ellipse

Step-by-step explanation: In the shown figure, a cone is cut be a plane at an angle to it's base.

<h3><em>Note : When a plane intersecting a cone at an angle to its base it form a conic section shape Ellipse.</em></h3>

If plane would cut the cone by keeping parallel to base then it would form a circle.

So, the answer is just an Ellipse.

So, the correct option is first option.

Reika [66]3 years ago

3 0

Answer: Circle

Step by step: I just did it online

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4 years ago

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4 years ago

Two times x is 8 more than y. The sum of x and two times y is 14. Write two equations and graph to find the value of y.

Sauron [17]

Option B: $y=4$ is the value of y

Explanation:

It is given that "Two times x is 8 more than y". Writing it as expression, we have,

$2x=8+y$

It is also given that "The sum of x and two times y is 14". Writing it as expression, we have,

$x+2y=14$

To find the value of y, let us solve the two equations using substitution method.

From the equation $2x=8+y$ , let us find the value of x.

$x=\frac{8+y}{2}$

$x=\frac{8}{2} +\frac{y}{2}$

$x=4+\frac{y}{2}$

Now, substituting $x=4+\frac{y}{2}$ in the equation $x+2y=14$ , we get,

$4+\frac{y}{2}+2y=14$

$4+\frac{5y}{2} =14$

$\frac{5 y}{2}=10$

$5y=20$

$y=4$

Thus, the value of y is $y=4$

8 0

3 years ago

Question in picture #21 only

krek1111 [17]

Number 21 is the first answer a.) 8

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4 years ago

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Sara Blake's grandmother gave her $3000.00 to save for college. She put it in a savings account that earns 6% interest per year.

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• P is the principal amount, $3000.00.

• r is the interest rate, 6% per year, or in decimal form, 6/100=0.06.

• t is the time involved, 8 years time periods.

• So, t is 8 year time periods.

To find the simple interest, we multiply 3000 × 0.06 × 8 to get that:

The interest is: $1440.00

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3 years ago

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