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puteri [66]
3 years ago
10

BRAINLIEST!!!

Mathematics
2 answers:
daser333 [38]3 years ago
6 0
(6 + 5i)(10- 15i)
60- 90i +50i - 75i2
60- 40i -75i2
Answer is C
sineoko [7]3 years ago
3 0

Answer:

c)  60-40i-75i^2

Step-by-step explanation:

first you multiply out the brackets then collect like terms to get the answer

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PLEASE HELP ASAP!!! I don’t know how to do this problem or where to start! How do I solve this?
Leto [7]

Answer:

W = 4.95

Step-by-step explanation:

You want to start by writing down what you know, and forming a system of equations.

L= length W= width

2L+2W=14.7    

L= 2.4

On the left side of the equation, you're adding all your side lengths, and on the right, is the total perimeter. (Also could be written L+L+W+W = 14.7)

You would then substitute L from the bottom equation into the top equation to get:

2(2.4) +2W=14.7

Solving:

4.8+2w=14.7

W= 4.95

To check your answer simply add all the sides together and make sure it equals your perimeter. You can also plug W and L back into the original equation.

7 0
3 years ago
Tina throws a baseball straight up from a height of 3 feet and at a speed of 50 feet per second. The height of the ball in feet
vodka [1.7K]

Answer:

9 feet

Step-by-step explanation:

The height of the ball in feet is given by the polynomial:

h(t) = -16t^2+50t+3

where t is the time in seconds.

After 3 seconds, t = 3:

h(3) = -16(3)^2 + 50(3) + 3 \\\\h = -144 + 150 + 3 = 9 feet

The height of the ball after 3 seconds is 9 feet.

6 0
3 years ago
describe how the location of the vertex of the angle determines the process of finding the angle measures associated with that a
LekaFEV [45]

Answer:

k

Step-by-step explanation:

3 0
3 years ago
The amount of a 500 g sample of a radioactive substance that remains over time is given by the equation , where d is the number
Vlada [557]
Non-linear

The line should be an exponential function, as it halves in mass every time a certain amount of time has passed.
4 0
3 years ago
Giving brainliest!!!!!!! Please be correct if you don’t know the answer don’t andwer
mars1129 [50]

Answer:

C

Step-by-step explanation:hope this helps have a great day =D

3 0
3 years ago
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