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madam [21]
3 years ago
14

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

Mathematics
1 answer:
balu736 [363]3 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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What fractions are equivalent to 1.27 repeated
kramer
<span>Let x equal your repeating decimal. Call this equation x = 1.273
</span><span>Multiply both sides of your previous expressions by 100. Call this equation 100x = 127.273
</span><span>Subtract 1 from both sides of the equation to get 99x = 126.
</span><span>Divide both sides of the equation by 99 to get 126/99.
</span><span>126/99 reduced is to its lowest terms is 1 and 3/11.
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3 0
4 years ago
Select the algebraic equation that correctly represents the given sentence.
sukhopar [10]
Hi!

I will put the key parts of this word problem in bold. 

<span>Tina had $640 in her bank account. When she took out d dollars, her balance was $460. 

So, try to write an equation from that information. 

$640 took out d makes $460
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The answer is B. $640 - d = $460

Hope this helps! :)
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6 0
3 years ago
Read 2 more answers
If i multiply by 5 and subtract 63 i get the same answer if i multiply 3 and subtract 11 is the answer 26
aev [14]
Yes

26 x 5 - 63 = 67

26 x 3 - 11 = 67
3 0
3 years ago
The answer to (m-7)(9m-1)
faust18 [17]
To solve this, we will need to distribute out the values in parentheses. To do this, we can use a series called the FOIL method, where we multiply the first terms, outside terms, inside terms, and last terms.

(m-7)(9m-1)
9m²-m-63m+7
9m²-64m+7

Using the math above, we can see that when we multiply these values, the answer is 9m²-64m+7. 
7 0
4 years ago
30 pts for this one.... (only if you give a reasonable answer no BS)
Keith_Richards [23]

Answer:

  1. y = 3000x + 40000
  2. a) the base salary of the salesperson
  3. a) the commission per subscription

Step-by-step explanation:

Slope intercept form is found by [ y = mx + b ] where m = slope and b = y-intercept. We are given that a salesperson gets $40000 as a base salary. Since this value doesn't change it is the starting value, in other words the y-intercept. The salesperson also gets $3000 for every subscription they sell. Since this amount grows at a constant rate, that is the slope. Now, we can write the slope intercept form of [ y = 3000x + 40000 ].

Best of Luck!

6 0
3 years ago
Read 2 more answers
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