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3 years ago

Help me plz it's so hard I'm not smart.

Mathematics

1 answer:

Ipatiy [6.2K]3 years ago

3 0

Answer: Just do math

13) 9

14) 16.2

16) .6

17) 9.805

19) 11.54

20) 14.5

also u could use a calculator

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Answer:

$\huge\boxed{\sf 2a^2-13b^2+12abc}$

Step-by-step explanation:

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-BRAINLIEST IF ANSWERED RIGHT-

inn [45]

Answer:

Part A:

$x\in \mathbb{R}$ ( $x$ is equal to all real numbers)

Part B:

$5+(-4)-12=-4-7,\\-11=-11\:\checkmark,\\\\5+0-12=0-7,\\-7=-7\:\checkmark,\\\\5+5-12=5-7,\\-2=-2\:\checkmark$

Step-by-step explanation:

Part A:

Given $5+x-12=x-7$ , combine like terms:

$x-7=x-7$

Add 7 to both sides:

$x=x$

Since this is merely a true statement for all real numbers (reflexive property), this equation is true for any real value of $x$ .

Therefore,

$x\in \mathbb{R}$ ( $x$ is equal to all real numbers).

Part B:

Using arbitrary values $x=-4, x=0, x=5$ as requested in part B, verify:

$5+(-4)-12=-4-7,\\-11=-11\:\checkmark,\\\\5+0-12=0-7,\\-7=-7\:\checkmark,\\\\5+5-12=5-7,\\-2=-2\:\checkmark$

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3 years ago

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Vlada [557]

I believe that the best answer among the choices provided by the question are:

A. Angle A is congruent to angle EA. SSA
C.Cannot be congruent to

Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.

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