Let Daniel's age be 'x' years , hence, Lisa's age is (x - 5) years. Let Grandma's age be 'y' = 54 years.
Hence,
x(x - 5) = 2/3 × y
x² - 5x = 2 × 54 years / 3
x² - 5x = 36 years
x² - 5x - 36 = 0
∆ = (-5)² - 4(1)(-36) = 25 + 144 = 169
√∆ = √169 = 13

x1 = (5+13)/2, x2 = (5-13)/2
x1 = 9, x2 = -4
Since, age can't be negative,
Daniel's age = x = 9 years.
Answer:
144
Step-by-step explanation:
2( 1/2 × 3 × 4 ) + ( 11 × 5) + ( 11 × 4 ) + ( 11 × 3)
= 12 + 55 + 44 + 33
= 144
Answer:
x = 180 - 30 - 41 - 67 = 42°
<h2>
Answer:</h2><h2>-16 -6.</h2><h2 /><h2>
-2(5+3)(-2+4)</h2><h2>
-2(8) (-6)</h2><h2>
Then multiply the one's outside with the one's in the bracket.</h2><h2>
Making it...</h2><h2>
-16 -6</h2>
R divided by 9 is the answer.