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3 years ago

Which description does NOT guarantee that a trapezoid is isosceles?

Mathematics

1 answer:

babunello [35]3 years ago

3 0

A trapezoid is isosceles if and only if

(1) The base angles are congruent

(2) The diagonals are congruent

(3) The opposite angles are supplementary

So the description does not guarantee that a trapezoid is isoceles for "Congruent bases".

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PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!!!

aivan3 [116]

Hello and Good Morning/Afternoon

Let's take this problem step-by-step:

To find the solution to a system of equation

⇒ must set the equations equal to each other

⇒ and solve

Let's put that into action

$x^2-2x+3 = -2x + 12\\x^2-2x+2x+3-12=0\\x^2-9=0\\(x+3)(x-3)=0$

At this point, to make the whole thing equal zero

⇒ either 'x+3' or 'x-3' equals zero

⇒ must find 'x' that satisify either equation

$x-3=0\\x=3\\\\x+3=0\\x=-3$

Let's find the corresponding f(x) to each x-value

$f(3) = -2(3)+12=-6+12 = 6\\\\f(-3) = -2(-3) + 12=6+12=18$

Therefore the solutions are (3,6) and (-3,18)

Answer: (3,6), (-3,18)

Hope that helps!

#LearnwithBrainly

3 0

2 years ago

All tickets for a local country concert are the same price. The ticket agency adds a fixed fee to every order. A person who orde

Norma-Jean [14]

Answer:

Since we are doing division the correct answer would be :

108 divided by 6 = 18

Hope this helps! :)

5 0

3 years ago

<img src="https://tex.z-dn.net/?f=%28%5Csqrt%282%29-%5Csqrt%28-2%29%29%28%5Csqrt%2818%29%2B%5Csqrt%28-2%29%29" id="TexFormula1"

prohojiy [21]

Rewrite as (2^1/2 + 2^1/2)*(18^1/2-2^1/2) = 8

5 0

3 years ago

Help me please I need help with this problem

ryzh [129]

Time it by the number before hand and you get 8 then 16 then 32 . Think about it it works and it’s a consistent continental

3 0

3 years ago

Evaluate the expression solve for k = -3.4 write answer as a decimal or whole number 7k/10

Sauron [17]

-2.38 is the answer because 7x-3.4=x/10=-2.38

6 0

3 years ago