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mart [117]
3 years ago
8

Solving quadratic equations A B C D

Mathematics
2 answers:
anyanavicka [17]3 years ago
7 0

Answer:

The answer is C

Vladimir79 [104]3 years ago
4 0

Answer:

x = -1 ± 2√2

Step-by-step explanation:

see attached

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What is the value of n in the equation 1 (n – 4) – 3 = 3 - (2n+3)?
xxTIMURxx [149]

Answer:

n=7/3

Step-by-step explanation:

1 (n – 4) – 3 = 3 - (2n+3)

1. distribute the 1 on the left side and distribute the -1 on the right side

1n-4-3=3-2n-3

2. add like terms

1n-7=-2n

3. move n to one side and by itself

-7=-3n

4. divide -3 to get n alone. Both negatives cancel out each other

7/3=n

4 0
3 years ago
Read 2 more answers
In the third degree polynomial function f(x) =x^3 + 4x, why are 2i and -2i zeros?
IgorC [24]

Answer:

We just need to evaluate and get f(2i)=0, f(-2i)=0.

Step-by-step explanation:

Since i^2=-1, then i^3=i^2i=-i, and we can apply this when we evaluate f(x) =x^3 + 4x for 2i and -2i.

First we have:

f(2i) =(2i)^3 + 4(2i)=2^3i^3+8i=8(-i)+8i=0

Which shows that 2i is a zero of f(x).

Then we have:

f(-2i) =(-2i)^3 + 4(-2i)=(-2)^3i^3-8i=-8(-i)-8i=8i-8i=0

Which shows that -2i is a zero of f(x).

4 0
4 years ago
Please help!! its due in 9 minutes
Grace [21]

Answer:

Times it by 40. That is the pattern.

3 0
3 years ago
Read 2 more answers
Write an equation that you can use to find the value of x.
MariettaO [177]
Line CA is a straight line, meaning it adds up to 180°

Line BE splits the line into two supplementary angles, because when the two angles are added together they will equal 180°

Using the rule of supplementary angles, we can then make the equation 3x + 8x + 15 = 180

Now, simplify the equation by combining like terms

11x + 15 = 180

To solve, isolate x

11x + 15 = 180
11x = 165
x = 15
7 0
2 years ago
It takes Chad six hours to put his own miniature bike together . If Andrew helps him, it only takes four hours. How long would i
wel

Answer:

it would take 10 hours

Step-by-step explanation:

8 0
3 years ago
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