Answer:
D. 7 units
Step-by-step explanation:
Using the formula: A= area a= base 1 b= base 2
H = 2 <u> A </u>
a + b
H = 2 <u> 98 </u>
8 + 20
H = 2<u> 98 </u>
28
H = 2( 3.5)
H = 7
Lets check...
42/56 = 56/64
cross multiply
(56)(56) = (42)(64)
3136 = 2688...(incorrect)...these are not proportional
proportions are nothing but equivalent fractions
42/56 = 3/4
56/64 = 7/8
as u can see, they are not equivalent fractions...so they are not proportional
Answer:
angle AOD + 170=180 (sum of angles on a straight line)
angle AOD=180-170
angle AOD=10
Angle BOC(4x)+ 170= 180 (sum of angles on a straight line )
angle BOC(4x) =180-170
4x=10
4x/4=10/4
x=2.5
Answer: The area of the triangle is: " 2v⁴u² square units" ;
or, write as: " 2v⁴u² units² " .
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<u>Note</u>: The formula/equation for the area, "A", of a triangle is:
A = (1/2) * b * h ; or: A = (b * h) / 2 ;
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in which: "A" = "area" ;
"b" = "base length" ;
"h" = "[perpendicular] height" ;
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We are asked to solve for the area, "A" .
We are given: "b = 4v³ " ; "h = vu² " ;
So; to find the area, "A", of the triangle, we plug these given values into the formula; and solve/ simplify:
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A = (1/2) * b * h ;
A = (1/2) * (4v³) * (vu²) ;
A = 2v³ * vu² ;
A = 2v⁴u² square units.
Answer: The area of the triangle is: " 2v⁴u² square units" ;
or, write as: " 2v⁴u² units² " .
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