Answer:
20
Step-by-step explanation:
Do the opposite to get the answer
8*2.5=20
Then to check it
20/8=2.5
Question:
Solve the equation 2x2−5x+3=0 by the method of completing square.
Answer:
We have,
2x2−5x+3=0
⇒x2−25x+23=0 (Dividing throughough by 2)
⇒x2−25x=−23 (Shifting the constant term on RHS)
⇒x2−2(45)x+(45)2=(45)2−23 (Adding (21Coeff.ofx)2 onboth sides)
⇒(x−45)2=1625−23⇒(x−45)2=16
Answer:
y=-2/3x -6
Step-by-step explanation:
y=-6 so b=-6
rise/run=-2/3
Put that into an equation of y=mx+b and you get y=-2/3x -6
Answer:
150x + 280y = 1310
Step-by-step explanation:
Answer:
30 cm
Step-by-step explanation:
Perimeter = (half the circumference) + (twice the radius)
= (1/2)(2·10 cm) + 2(10 cm)
= 10 cm + 20 cm
= 30 cm
