Answer:
±10
Step-by-step explanation:
sqrt(-4) * sqrt(-25).
We know that the sqrt(a) sqrt(b) = sqrt(ab)
sqrt(-4*-25)
sqrt(100)
±10
all of those r correct :)
Answer:
Step-by-step explanation:
tan 36° = x/40
x = 40 * tan 36°
x ≈ 29.1
Answer:
Since 
= 6 and 
= 7 it is known that 
is between 6 and 7.
Step-by-step explanation:
<h2>$67.50</h2><h2 />
Original price = x
The original price of a pair of shoes was discounted 20%.
20% = 20/100 = 0.2
1 - 0.2 = 0.8
x * 0.8
Now they sell for $54.
x * 0.8 = 54
Solve to find x.
54 / 0.8 = x
x = 67.5
Convert that to currency.
<h2>$67.50</h2>
