First triangle=bxh/2
=3x4/2
=6in squared
rectangle=l x w
=3 x 10
=30in squared
trapezoid=3+5x2/2
=8in squared
6 + 30 + 8
=44 in squared
<span>given:
doris ran 2.5 KM
assume A=2500 M
she sprinted 300 M
B=300 M
she walked 1/4 distance she sprinted ie. 0.25*300=75 M
C=75 M
total= A+B+C
=2500+300+75=2875 M
so Doris travelled 2875 Meter during practice .</span>
Answer: ik nothing of basketball sorry
The square of the equation 2
– 12x – 20=0 is
What is a quadratic equation?
A quadratic equation is any equation that can be rearranged in standard form as where x represents an unknown, and a, b, and c represent known numbers, where a ≠ 0.
a
+bx+c , a, b, c are integers .
formula: −b±√b2−4ac/2a
Given equation ,
2
-12x-20=0
By comparing with the quadratic equation
Here, a=2, b= -12, c= -20.
X=−b±
/2a
X= -(-12) +
/2(2)
X=12+-
/4
X=12+-
/4,
X=12+- (-4)/4
X=12+(-4)/4 and x=12-(-4)/4
X= 12-4/4 and x=12+4/4
X=8/4 and x= 16/4
X=2 and x= 4
Therefore, the square of the equation 2x2-12x-20=0 is x= 2 and x=4.
To know more about the quadratic equations visit:
brainly.com/question/17177510
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