Answer:
a = 4, x = 1
Step-by-step explanation:
The opposite sides of a parallelogram are congruent , then
WX = YZ , that is
a² + 5a = 5a + 16 ( subtract 5a from both sides )
a² = 16 ( take the square root of both sides )
a = ± 
= ± 4
Since a > 0 , then a = 4
Also
XY = WZ , that is
x² + 6x = 4x + 3 ( subtract 4x + 3 from both sides )
x² + 2x - 3 = 0 ← in standard form
(x + 3)(x - 1) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 3 = 0 ⇒ x = - 3
x - 1 = 0 ⇒ x = 1
Since x > 0 , then x = 1
8. 61
9. 48
10. 45
11. 21
Ask me if you need equations
Answer:
think it's c because it's 5 times -2 in other terms so
Answer:
The answer is 1825.35
Step-by-step explanation:
Since the first week isn’t included, we only count 4 weeks.
So first, 2000 x 0.03 = 60
(By the way 0.03 is 3%)
2000 - 60 = 1940
Subtracting 2000 by 60 represents the amount of money the aquarium went down in that week.
Then, week 3:
1940 x 0.03 = 58.2
1940 - 58.2 = 1881.8
Now, the last week, week four:
1881.8 x 0.03 = 56.45
1881.8 - 56.45 = 1825.35.
Therefore, 1825.35 after 5 weeks.
It is the second answer choice
