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ella [17]
2 years ago
11

Add the complex numbers: ​ ​(-3+4i)+(7-i)

Mathematics
1 answer:
Romashka [77]2 years ago
5 0
The answer is (3i+4)
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Renata moved to her new home a few years ago. Back then, the young oak tree in her back yard was 190 centimeters tall. She measu
ANTONII [103]
1.

The equation for this problem would be

y = (?)x + 190

With y being the height after a given amount of years and x being the amount of years passing. We would need to find ?, the rate of how fast the tree grows. The problem gives us y = 274 centimeters and x = 3 years

Let’s plug in and solve for ?

274 = ?(3) + 190

84 = ?3

28 = ?

The tree grew 28 cm per year

2.

Since we know the rate of change and y, let’s just plug in values

344 = 28x + 190

154 = 28x

5.5 = x

5.5 years since Renata moved.
3 0
3 years ago
Let f(x) = 2x2 + x − 3 and g(x) = x + 2.<br><br> Find (f • g)(x)
katen-ka-za [31]

Answer:

(f\cdot g)(x) =  2x^3 + 5x^2-x-6

Step-by-step explanation:

We are given the two functions:

f(x)=2x^2+x-3\text{ and } g(x)=x+2

And we want to find:

(f \cdot g)(x)

Recall that this is equivalent to:

=f(x)\cdot g(x)

Substitute. Hence:

(f\cdot g)(x)= (2x^2+x-3)(x+2)

Expand if desired:

\displaystyle = x(2x^2+x-3)+2(2x^2+x-3) \\ \\ = (2x^3+x^2-3x)+(4x^2+2x-6) \\ \\\ = 2x^3 + 5x^2-x-6

3 0
3 years ago
Read 2 more answers
What do you call it when a bunch of kids throw circles at eachother
Hunter-Best [27]
It’s called a pi fight
6 0
3 years ago
Read 2 more answers
What is the value of 2/5 + 5/7
Alex787 [66]

Answer:

<h3>2/5 + 5/7 = 39/35</h3>

Step-by-step explanation:

<h3>I hope it helps ❤❤❤❤</h3>

4 0
3 years ago
How do I solve this equation <br> x2+kx-35
sertanlavr [38]
X^2+kx-35
=x^2+kx+-35
=kx+x^2-35

7 0
3 years ago
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