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DENIUS [597]
3 years ago
10

Find EF in the trapezoid.

Mathematics
1 answer:
love history [14]3 years ago
4 0
So hmmm   if you notice the tickmarks, the left-side is split in halves, and the right-side is also split in halves, that makes EF the midsegment of the trapezoid

thus  \bf \textit{midsegment of a trapezoid}\\\\
m=\cfrac{base1+base2}{2}\qquad 
\begin{cases}
base1, base2=\textit{parallel sides}\\
----------\\
base1=x+8\\
base2=58\\
m=6x
\end{cases}
\\\\\\
6x=\cfrac{(x+8)+(58)}{2}\implies 6x=\cfrac{x+8+58}{2}\implies 12x=x+66

and surely you know how much that is
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3 0
2 years ago
Read 2 more answers
The simplest form of the expression -2x2(x – 5) + x(2x2 – 10x) + x is
Bad White [126]
For this case you must simplify the expression respecting the rules of multiplication of mathematics.
 The steps to simplify the expression are the following:
 First multiply what is in the parentheses
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  -2x ^ 3 + 10x ^ 2 + 2x ^ 3 - 10x ^ 2 + x
 Then add the terms that have the same exponent
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4 0
3 years ago
Read 2 more answers
-2/3x + 2.8 = -8.2 what is x
JulsSmile [24]
-2/3x + 2.8 = -8.2 what is x
Add 2.8 on both side of the equation
-2/3x=-11
Divide both side by -2/3
x=33/2

Check: -2/3(33/2)+ 2.8 = -8.2
-11+2.8=-8.2
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Answer is x=33/2
6 0
4 years ago
Select the correct answer.
garri49 [273]

Answer:

A.

two rays that share a common endpoint called the vertex

Step-by-step explanation:

In Euclidean geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.

4 0
3 years ago
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