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3 years ago

PLSSSS HELP ME WITH THIS QUESTION!!!

Mathematics

2 answers:

AysviL [449]3 years ago

7 0

Given,

∠AOE = 30°

∠DOB = 40°

So, ∠EOD = 180 - (30+40) [angles on a straight line]

= 180 - 70

= 110

∠EOD = ∠COF [ vertically opposite angle]

∴ ∠COF = 110°

katen-ka-za [31]3 years ago

4 0

91°-32°=
59°
The line EF total angles must equal 180°. Therefore angle EOB is 89°, (180-91). Then line AB must also equal 180°. And angle EOB is 89° and angle COA is 32°. Take 89+32 which is 121. 180-121=59. Finally, that leaves angle COE with an angle measure of 59°.

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sveticcg [70]

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madreJ [45]

Answer:

a = 18.15

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Remember PEMDAS: (numbers 3 & 4 and numbers 5 & 6 are solved from left to right)

Parentheses
Exponents
Multiplication
Division
Addition
Subtraction

$-15=14.3-2a+7$

After combining like terms on the left side, you get -15. Now combine like terms on the right side of the equation by adding 14.3 and 7.

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Get -2a alone by subtracting 21.3 from both sides.

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Divide both sides by -2.

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3 years ago

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But, solving 3x = x+30 which simplifies to x=15 is not the only solution to this equation, as you can see in below picture. Finding all solutions is a bit more work, but maybe that is not required in your case.

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