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USPshnik [31]
3 years ago
10

Simplify (9-5i)-(4+10i)

Mathematics
2 answers:
Alina [70]3 years ago
6 0
Your simplified answer is 10 (ten)
Korolek [52]3 years ago
4 0
(9-5i)-4-10i
-90i + 50i^2 - 4
50i^2 -90i -4
its 50i squared - 90i - 4
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If s(x) = 2-x² and t(x) = 3x, which value is equivalent to (sot)(-7)?
Sedaia [141]

Answer:

-14+63x²

Step-by-step explanation:

(sot)=s(tx)

=s(3x)

=2-(3x)²

=2-9x²

(sot)(-7)=-7(2-9x²)

=-14+63x²

I hope I helped

and of I am correct mark my answer as brainliest

8 0
1 year ago
The perimeter of a rectangle is 1144 ft. It’s length is three times it’s width.find the dimensions of the rectangle.
AVprozaik [17]

Answer:

Length= 429 feet\\Width=143feet

Step-by-step explanation:

Perimeter of the rectangle= 1144 feet

Length=3*Width

L=3*W

Perimeter of rectangle:

                             2(Length+Width)\\\\                1144=2(3W+W)\\\\           1144/2=3W+W\\\\          572=4W\\\\    W=572/4\\\\ W= 143 feet\\\\Width=143 feet\\\\Length=3*143=429 feet\\\\

The Dimension of the rectangle is :

                       Length= 429 feet\\Width=143feet

8 0
2 years ago
To find out how fast a tree grows, you can measure its trunk. A giant red oak's diameter was 248 inches in 1965. The tree's diam
professor190 [17]
Any times you see the phrase: "Rate of Change", or even sometimes just the word "Rate" think slope. 

The word slope is just a fancy word that means the rate of change. 

Rate of Change is just a fancy phrase meaning how much does something change over some amount of time. 
So in this case our rate of change will have the units of inches per year. 

Let's get to the problem at hand! 
We'll need to find slope / the rate of change (the two are interchangeable with each other).
Let's go over the formula for slope:

m = (y2 - y1) / (x2 - x1) 

First we will need to label each of the "coordinated points (the two numbers that go together in a pair)" with either (x1,y1) or (x2,y2). 

A Giant Red Oak's diameter in 1965 was 248 inches. Keep in mind time is ALWAYS going to be X in rate of change problems (and most all problems for that matter).  

(1965,248) 
(X1,Y2)

(2005,251)
(X2,Y2)

Plug in the values into the equation!
m = (y2 - y1) / (x2 - x1)
m = (251 - 248) / (2005 - 1965) 
m = (3) / (40)

Type that into a calculator to get a decimal value over 1.
m = 0.075 inches per 1 year. 
Or... 

m = 0.075in / 1 year
8 0
3 years ago
Find the whole.<br> 500​% of what number is 4,800​?
alexgriva [62]
Answer: 9.6
Explanation: if 500% is 4800 we would need to divide 4800 by 500 to find 1%
4800/500= 9.6
5 0
3 years ago
Read 2 more answers
How to solve this question
erica [24]
Multiplication property; distribution property of an exponent. Multiply exponents together, then distribute the ¨( )¨
3 0
2 years ago
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