Answer:
7 years
Step-by-step explanation:
Given that:
Let Richard's age = x
Elder sister's age = 2x
Youngwr sister's age = x - 2
Product of sisters ages = 70
2x * (x - 2) = 70
2x² - 4x = 70
2x² - 4x - 70 = 0
x² - 2x - 35 = 0
x² - 7x + 5x - 35 = 0
x(x - 7) +5(x - 7) = 0
(x - 7) or (x + 5) = 0
x = 7 or x = - 5
X can't be negative
Hence, x = 7
Richard is 7 years
13 1/2 containers of sugar.
To solve this, we are going to multiply our degrees by a conversion factor. Remember that 1°=

, so to convert -40° to radians, we are going to multiply -40° by the conversion factor

; that way we can cancel degrees and express our answer in radians:
(-40°)

We can conclude that the correct answer is:
<span>
B). -2π/9</span>
Hello is there anything more like the high or the base because i can't solve it like that without anything