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slega [8]
3 years ago
11

Help on this please

Mathematics
1 answer:
AveGali [126]3 years ago
5 0
18 11 25 8 4 !!!!!!!!
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I would appreciate it if you help me pls asap !!
masha68 [24]

Answer:

BC= 20 units

Step-by-step explanation:

Since ∆ ABC is an equilateral triangle, all the sides are equal in length.

AC= BC

=>-y+23= 6y+2

=>-y-6y= 2-23

=>-7y= -21

=>y= 21/7

=>y= 3

BC = 6y+2 = 6(3)+2 = 18+2 = 20 units

7 0
3 years ago
Read 2 more answers
Congruence postulates
ZanzabumX [31]

Step-by-step explanation:

Ok, imagine I have a finger pointed up, and you have your's as well. They are not congruent / parallell to each other because they are not in the same plane.

Plane: A plane is kind of the space around you, so take a paper and draw a line, the space around the line is called a plane. To make two lines parallell, they have to be straight and be in the same plane

Congruence/congruent= Equal(led) to

Postulates means that you know it without proof, for example, a right angle is 90 degrees.

There are different congruence postulates. It can be used for triangles or for other shapes.

I hope this answers your question, I am not to sure on what you said !

6 0
3 years ago
Please help picture please
polet [3.4K]

( {9}^{ - 2} )^8 =  {9}^{ - 2 \times 8}  =  {9}^{ - 16}  =   \boxed{\frac{1}{ {9}^{16} } }

6 0
3 years ago
What is the answer to -(5) to the power of two<br>PS Number 6
Damm [24]

Evaluate -(5)^2. Note that Order of Operations rules (PEMDAS) require that we perform exponentiation before multiplication.

Therefore, we evaluate 5^2 first, obtaining 25, and after that multiply this result by -1.


-(5)^2 = -25

6 0
3 years ago
Read 2 more answers
Solve by using the method of elimination(X and Y): 3x+4y=300
Ierofanga [76]

Answer:

x=-4/3y+100

Y=-3/4x+75

Step-by-step explanation:

6 0
2 years ago
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