Answer:
Samantha worked 26 hours and Adriana worked 13 hours.
Step-by-step explanation:
Let s = the number of hours that Samantha worked
Let a = the number of hours that Adriana worked
s = 2a
s + a = 39
2a + a = 39
3a = 39
a = 13
77 / 1.54 = <span>£ </span>53.8461538
Check = 53.85 x 1.54 = 77
<u>Answer:</u>
x = 5.67
<u>Step-by-step explanation:</u>
We are given a right angled triangle with a length of the hypotenuse 8 with the remaining two sides (base and perpendicular) that are equal to each other.
Assuming the two equal legs of this right angled triangle to be x, we can use the Pythagoras Theorem to find the value of x.


Taking square root at both the sides to get:


Therefore, x = 5.67.
Answer:
C
Step-by-step explanation:
Using sum/difference to product identity
• sin x - sin y = 2 cos(
) sin (
)
with x = 4Θ and y = 2Θ
Then
sin(4Θ) - sin(2Θ)
= 2 cos(
) sin(
)
= 2cos(3Θ)sinΘ → C