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Julli [10]
3 years ago
13

Write an equivalent expression for each of the following. Express your answers in the form a + bi or a - bi

Mathematics
1 answer:
Lana71 [14]3 years ago
6 0

Answer:

44 +14i

Step-by-step explanation:

(5 + i)(9 + i)

FOIL

first 5*9 = 45

inner: 9i

outer :5i

last: i*i = i^2 = -1

Add togheter

45 + 9i+5i -1

Combine like terms

44 +14i

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Please awnser thase questions for my prarice test
Vinvika [58]

Answer:

Add 5 for the first one

The 2nd one is 25 and k or 25 thousand.

Step-by-step explanation:

add 5 for the first one because 5 + 5 = 10

9 + 5 = 14 .   and 13 + 5 = 18.

------------------------------------------------------------------

For the 2nd one:  25k means 25 thousand or the Product of 25 and k.

5 0
3 years ago
X) sec’A + cosec?A<br>secA. cosecA​
VikaD [51]

Answer:

(Sin A + Cos A)/Sin A. Cos A

Step-by-step explanation:

As we know

Sec A = 1/Cos A

and Cosec A = 1/Sin A

Given Equation

Sec A + Cosec A

Substituting the given values, we get -

1/cos A + 1/Sin A

(Sin A + Cos A)/Sin A. Cos A

3 0
3 years ago
On December 13, 2007, one British pound was worth 2.04 U.S. dollars.
Alika [10]

Answer:

a) 5 pounds

b) 365 dollars

3 0
2 years ago
I need help guys Find (f+g)(x)
mihalych1998 [28]
The answer would be D, I'm sure that is correct so you dont need to check <3 b e l i e v e i n m e
7 0
3 years ago
What is the slope of the line?<br> pls help I need the answer
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Answer:

the slope of a horizontal line is 0

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