3 years ago

Someone please help !!

Mathematics

1 answer:

vaieri [72.5K]3 years ago

8 0

Answer:

Step-by-step explanation:

138-88=50

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2x+5y how do i simplify this or do i just leave this as that

zheka24 [161]

Since they are not like terms (not the same variables) you cannot simply so you leave it like that.✨ This applies for addition and subtraction only. It’s different with multiplication and division.✨

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2 years ago

PLZ HELP

Alex

Answer:

The correct option is C ) 109.5°

Therefore,

$m\angle E=109.5\°$

Step-by-step explanation:

Given:

In Triangle DEF

d = 10

e = 18

f = 12

To Find

angle E = ?

Solution:

In Triangle DEF , Cosine Rule says

$\cos E=\dfrac{f^{2}+d^{2}-e^{2}}{2fd}$

Substituting the values we get

$\cos E=\dfrac{12^{2}+10^{2}-18^{2}}{2\times 12\times 10}$

$\cos E=\dfrac{-80}{240}=-\dfrac{1}{3}$

Therefore,

$\angle E=\cos^{-1}(-0.3333)$

$m\angle E=109.5\°$ ............As it is in Second Quadrant

Therefore,

$m\angle E=109.5\°$

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3 years ago

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Ierofanga [76]

Answer:

jesus...you're twisted anyway 69 :)

Step-by-step explanation:

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3 years ago

12÷3, Create a question or word problem that matches your model.

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brian has 2 friends over his house. he has 12 cookies and wants to split them evenly amongst them 3. how many cookies does each friend get?

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Find the area of the triangle to the nearest tenth.

andreyandreev [35.5K]

Answer:

42.4

Step-by-step explanation:

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$A=\frac{1}{2} a*b*sin(a,b)$

2) using the formula described above:

A=0.5*14*11*0.55≈42.4 (mm²)

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3 years ago