Answer:
cos(x)
Step-by-step explanation:
.
Answer:
(a) 
(b) 
Step-by-step explanation:
Given

Solving (a): Simplify

Open brackets

Collect Like Terms

Simplify Like Terms

Solving (b): Simplify when a = 2 and b = -1





Hence:

Answer:
D.) 1,000 ft³
If the base of the pool is 200 square feet in size, then we can just multiply 200 by the depth of 5 to equal 1,000 ft³ which is equal to the volume of the pool.
Step-by-step explanation:
Have a great rest of your day
#TheWizzer
Answer:
Hope this helps!!!!!!
Mark Brainlest!!!!!!!!!!
Step-by-step explanation:
Mark and Henry win some money and share it in the ratio 1:3. Mark gets £9. How much did Henry get?
Ratio = 1 : 3
Let Mark's share be 1x = x
and Henry's share be 3x
We know that Mark gets £9
So,
1x = x = £9
Then 3x = £(3 * 9) = £27
HENCE,
Mark's share = £9
Henry's share = £27
Total money = Mark's share + Henry's share = £9 + £27 = £36
Commutative means that you can mix up the numbers, but still have the right answer.
2 x 10 x 7 =
2 x 7 x 10 =
10 x 2 x 7 =
10 x 7 x 2 =
7 x 2 x 10 =
7 x 10 x 2
Hope this helps :)