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2 years ago

7th grade math. Easy but hard for me

Mathematics

2 answers:

alekssr [168]2 years ago

8 0

Feel free to ask me if you didn't understand a part

vivado [14]2 years ago

6 0

Answer:

∠YDC = 140°

∠FAB = 75°

Step-by-step explanation:

17)
The equation

$13x-3=55+3x+2$

$13x-3x=55+2+3$

$10x=60\\x=60/10=6$

∠FAB = 13(6) - 3 = 78 - 3 = 75°

18)

The equation

$15x+5=80+6x+6$

$15x-6x=80+6-5$

$9x=81\\x=81/9=9$

∠YDC = 15(9)+5 = 135 + 5 = 140°

Hope this helps

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