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SpyIntel [72]
3 years ago
9

Which method can you use to prove that the triangles are congruent

Mathematics
2 answers:
Natali [406]3 years ago
7 0

Answer:

HL

Step-by-step explanation:

It's a right triangle.

PolarNik [594]3 years ago
7 0

Answer: HL

Step-by-step explanation: because they are right triangles

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In the following figure, EM is tangent to circle A at point C.
Sphinxa [80]

Answer:

A must be true

Step-by-step explanation:

Since ABE and angle ACE are right angles the rest of the 2 angles are right angles either therefore EC = AB

6 0
3 years ago
How do you find a volume of a cone?
Dennis_Churaev [7]

Answer:

  V = (1/3)πr²h

Step-by-step explanation:

The volume of a cone is 1/3 the volume of a cylinder with the same radius and height.

  Cylinder Volume = πr²h

  Cone Volume = (1/3)πr²h

where r is the radius (of the base), and h is the height perpendicular to the circular base.

_____

<em>Comment on area and volume in general</em>

You will note the presence of the factor πr² in these formulas. This is the area of the circular base of the object. That is, the volume is the product of the area of the base and the height. In general terms, ...

  V = Bh . . . . . for an object with congruent parallel "bases"

  V = (1/3)Bh . . . . . for a pointed object with base area B.

This is the case for any cylinder or prism, even if the parallel bases are not aligned with each other. (That is, it works for oblique prisms, too.)

Note that the cone, a pointed version of a cylinder, has 1/3 the volume. This is true also of any pointed objects in which the horizontal dimensions are proportional to the vertical dimensions*. (That is, this formula (1/3Bh), works for any right- or oblique pyramid-like object.)

__

* in this discussion, we have assumed the base is in a horizontal plane, and the height is measured vertically from that plane. Of course, any orientation is possible.

4 0
3 years ago
The product of twenty-one negative integers is negative.<br> True<br><br> False
Shkiper50 [21]
Answer: TRUE:
_____________________
It is TRUE that the product of 21 (twenty-one) negative integer is a negative number; because you are multiplying an ODD NUMBER of NEGATIVE INTEGERS.
________________________
5 0
3 years ago
Read 2 more answers
How to find the volume of a sheer
kupik [55]

the volume of a sphere can be calculated with the formula v=4/3(pi)(r)^3

6 0
3 years ago
Find all complex solutions of X^2-5X -5= 0
denis-greek [22]

ANSWER

x  =  \frac{ 5  -  3\sqrt{ 5} }{2}  \: or \: x  =  \frac{ 5 +3 \sqrt{ 5} }{2}

EXPLANATION

The given equation is

{x}^{2}  - 5x - 5 = 0

The solution is given by the formula

x  =  \frac{ - b \pm \sqrt{ {b}^{2}  - 4ac} }{2a}

where a=1, b=-5, c=-5

We substitute into the formula to get;

x  =  \frac{ -  - 5 \pm \sqrt{ {( - 5)}^{2}  - 4(1)( - 5)} }{2(1)}

We simplify to get,

x  =  \frac{ 5 \pm \sqrt{ 45} }{2}

The solutions are:

x  =  \frac{ 5  -  3\sqrt{ 5} }{2}  \: or \: x  =  \frac{ 5 +3 \sqrt{ 5} }{2}

The equation has no complex roots.

4 0
3 years ago
Read 2 more answers
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