Answer:
28
Step-by-step explanation:
Just count the grids
Answer:
L = 60
Step-by-step explanation:
Answer:21x^2-16x-16
Step-by-step explanation:
(3x)(7x)+(3x)(4)+(−4)(7x)+(−4)(4) =
21x^2+12x−28x−16
21x^2−16x−16
Answer:
C
Step-by-step explanation:
3x-y=14
4x+y=21
add
7x=35
x=35/7=5
4×5+y=21
y=21-20=1
so (5,1 ) is the solution.
Answer:
AB = 12 cm
Step-by-step explanation:
AB/BC = XY/BY
From the above question:
AB = ??
BC = 9cm
XY = 4cm
BY = 3 cm
AB/9 = 4/3
Cross Multiply
AB × 3 = 9 × 4
AB = 9 × 4/3
AB = 12 cm
Therefore, Length AB = 12cm
