Percent is parts out o 100
42.5%=42.5/100=0.425
'of' means multiply
20.57 is 42.5% of ? means
20.57=0.425 times ?
divide both sides by 0.245
48.4=?
20.57 is 42.5% of <u>48.4</u>
Step-by-step explanation:
x²=5x+4
- x²-5x-4=0
- x²-x+4x-4
- x(x-1)+4(x-1)
- (x_1)(x+4)
hope it helps.
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Answer: 12 units²
Step-by-step explanation:
To find the area of a parallelogram, we use the formula A=l×w. To find the length and width, let's graph out the parallelogram to get a better view. Let's refer to the picture attached to see what the graph looks like. The length is 4 units while the width is 3 units. Therefore we multiply.
A=4×3=12 units²
Now, we know the area is 12 units².
S=2(4x+2x)+4x^2=4x^2+12x
4x^2+12x=7
4x^2+12x-7=0
D=12^2-4x4x(-7)=256
X1=(-12-16)/(2x4)=-3.5 impossible
X2=(-12+16)/(2x4)=0.5
A