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3 years ago

PLEASE HELPPP! WILL GIVE BRAINLIEST!

Mathematics

2 answers:

Kisachek [45]3 years ago

5 0

Answer:

Answer is b

Step-by-step explanation:

1. 1-2x>13 ----> -2x>13-1 -----> -2x>12 ----> (divide both sides by -2 and switch the sign) ---> x<-6

Mashcka [7]3 years ago

4 0

The answer is A

Step-by-step explanation:

If x= -6, the the inequality becomes -5 - 3(-6)>10

first you do 3 times -6, which equals -18, and then you do -5 minus -18, and that gives you 13 . 13>10, so if x= -6, A becomes true.

(sorry if you didn't understand my explanation.)

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3 years ago

EF is the median of trapezoid ABCD.

BARSIC [14]

Answer:

Part A) $x = 11$

B) length of BC = x + 12 = x + 12 = 11 + 12 =23

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Step-by-step explanation:

Median of trapezium is $m=\frac{base1+base2}{2}$

In provided figure, base1 is x+12 and base2 is 3x-4

A) solve for value of x

calculate the median $m=\frac{base1+base2}{2}$

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$4x-18=\frac{4x+8}{2}$

$4x-18=2x+4$

$2x-18=4$

$2x = 18 + 4$

$2x = 22$

$x = 11$

B) To find the length of BC, AD and EF , put the value of x in equation of lines

length of BC = x + 12 = x + 12 = 11 + 12 =23

length of EF = 4x - 18 = 4(11) - 18 = 44 - 18 =26

length of AD = 3x - 4 = 3(11) - 4 = 33 - 4 =29

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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2 years ago