2 years ago

-4 times a number plus 29

Mathematics

1 answer:

kipiarov [429]2 years ago

8 0

-4x+29? I think that's what you're asking.

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The total surface area of this cuboid is 132.5 sq.cm

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In ΔCDE, \overline{CE}

abruzzese [7]

Answer:

$m\angle CDE=14^o$

Step-by-step explanation:

we know that

An exterior angle of a triangle is equal to the sum of the opposite interior angles.

see the attached figure to better understand the problem

∠DEF=∠ECD+∠CDE

substitute the given values

$(4x+5)^o=(x+9)^o+(x+8)^o$

solve for x

Combine like terms

$(4x+5)^o=(2x+17)^o$

Group terms

$4x-2x=17-5$

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Find the measure of angle CDE

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$m\angle CDE=(6+8)=14^o$

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