Hello,
(x+2i)(x-2i)(x-4)=(x²+4)(x-4)=x^3-4x²+4x-16
Answer C
<h3>
Answer: 410 mL </h3>
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Explanation:
The ratio of A to B is 5:3
Multiply both parts by x to get 5x:3x
We need 5x parts of A and 3x parts of B
Adding those parts should get us 656 mL total
A+B = total
5x+3x = 656
8x = 656
x = 656/8
x = 82
Therefore, we need 5x = 5*82 = 410 mL of compound A
Also, we need 3x = 3*82 = 246 mL of compound B
In total, we have A+B = 410+246 = 656 mL which helps confirm the answer.
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Side note: The ratio 410:246 reduces to 5:3 after dividing both parts by 82.
Answer:
C
Step-by-step explanation:
The terms form a geometric sequence with common ratio r
r = 
= 
= ......
r = 
= 
= - 
The n th term formula of a geometric sequence is
= a 
← a is the first term
here a = - 81, hence
f(x) = - 81
→ C
Answer:
wdwd
Step-by-step explanation:
Lets set the two numbers as 'a' and 'b'
Now let us set up some equations based on the information:
- sum of two numbers 49 --> a + b = 49
- difference of the two numbers is 15 --> a -b =15
Equations
a + b = 49 -- equation 1
a - b = 15 -- equation 2
Solve:
(equation 1) + (equation 2)
2a = 64
a = 32 -- equation 3
(equation 3)'s value of a into (equation 2)
32 - b = 15
b = 17
The products of 'a' and 'b' is 544
Hope that helps!
