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3 years ago

Is the equation true,false, or open? 14+7+(-1)=21

Mathematics

2 answers:

yuradex [85]3 years ago

6 0

Answer:

The Equation is False.

Step-by-step explanation:

(14+7)=21 + (-1) = 20

melomori [17]3 years ago

4 0

$\text{Solve:}\\\\14+7+(-1)=21\\\\21-1=21\\\\20=21\\\\\text{Since it's not equal to each other, the equation would be false}\\\\\boxed{\text{False}}$

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The base of a cone has a radius of 4 millimeters and the height of the cone is 24 millimeters. What is the volume of the cone?

bixtya [17]

Answer:

The volume of the cone is 128π mm³ ⇒ answer (C)

Step-by-step explanation:

* Lets study the cone

- Its base is a circle

- Its height the perpendicular distance from its vertex to

the center of the base

- The length of its slant height = √(h² + r²)

- The volume of the con is 1/3 the volume of the cylinder

∵ The volume of the cylinder = πr²h

∴ The volume of the cone = (1/3) πr²h

* In our problem:

- r = 4 mm

- h = 24 mm

∴ Its volume = (1/3) × π × (4)² × 24 = 128π mm³

* The volume of the cone is 128π mm³

7 0

3 years ago

Collinear points are two or more points that lie on the same

muminat

Answer: Line

Explanation: Points that lie on the same line are called <em>collinear</em> points.

I'll show you an example.

Below, points E, B, and D are collinear since they lie on the same line.

I have highlighted the line green to see it more clearly.

However, C, B, and D would not be collinear

since they don't all lie on the same line.

7 0

3 years ago

Please answer this correctly

V125BC [204]

Answer:

1/6

Step-by-step explanation:

P(8) = number of 8's / total = 1/3

Then keeping the card so we have 7 and 9

P(7) = number of 7's / total = 1/2

P(8, keep, 7) = 1/3 * 1/2 = 1/6

4 0

4 years ago

The equation of the circle below is x2 + y2 = 5. <br> TRUE OR FALSE?

I am Lyosha [343]

FALSE

The standard form of the equation of a circle is

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

With (a, b) representing the centre and r representing the radius.

The radius of the circle in the attachment is 5, and therefore the circle has the following equation.

${x}^{2} + y {}^{2} = 25$

~ Hope this helps you!

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4 years ago

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joja [24]

Answer:

ooh I am Gryffindor

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3 years ago