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madam [21]
2 years ago
14

Multiply and simplify: (1 - 5i)(1 -2i)

Mathematics
1 answer:
balu736 [363]2 years ago
7 0

Answer:

-9-7i

Step-by-step explanation:

1) Use the FOIL Method : (a+b)(c+d)=ac+ad+bc+bd

1-2i-5i-10

2) Collect Like Terms

(1-10)+(-2i-5i)

3) Simplify

-9-7i

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Solve the equation: 7(x + 8) = 49​
eduard

Answer:

-1

Step-by-step explanation:

1.)Reorder the terms:

7(8 + x) = 49

(8 * 7 + x * 7) = 49

(56 + 7x) = 49

2.)Solving

56 + 7x = 49

3.)Solving for variable 'x'.

4.)Move all terms containing x to the left, all other terms to the right.

5.)Add '-56' to each side of the equation.

56 + -56 + 7x = 49 + -56

6.)Combine like terms: 56 + -56 = 0

0 + 7x = 49 + -56

7x = 49 + -56

7.)Combine like terms: 49 + -56 = -7

7x = -7

8.)Divide each side by '7'.

x = -1

9.)Simplifying

x = -1

Hope this helps

plz like and brainy

4 0
3 years ago
30 points And i will give brainliest
julia-pushkina [17]

Answer:

The one with the frequency of 8

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
How would i create a real life example that can be modeled by the expression -2×4
solong [7]
Bob is diving
he is at a depth of 2 meters below sea level
sam goes down 4 times as deep
how deep is sam

depth is a negative thing because you are 2 below 0 or -2
then we mutiply -2 by 4 to get 4 times to get -8 meters below sea level
8 0
3 years ago
Read 2 more answers
B is between A and C. C is between B and D. If BC = 45 and CD is 20. If AB = CD, what is the measure of AD?
mafiozo [28]

Answer:

AD = 85

Step-by-step explanation:

AD = AB + BC + CD ( substitute values , noting AB = CD = 20 ) , then

AD = 20 + 45 + 20 = 85

6 0
2 years ago
A toy manufacturer uses 1,000 plastic wheels to make 250 toy trucks. If they use 3,584 plastic wheels in an 8 hour shift, how ma
Bad White [126]

Answer:

112 trucks

Step-by-step explanation:

so you take ratio:

1000-250

3584-x

x=896

and after you divide 896 by 8 hours and get 112

hope it helped you

8 0
3 years ago
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