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Vinil7 [7]
3 years ago
12

Write the product in standard form. ( 4 + 7i)( 7 + 7i)

Mathematics
1 answer:
Helen [10]3 years ago
7 0
The answer is a) -21 - 77i
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What is the slope of a line perpendicular to the line y = 1/5x - 3
Lubov Fominskaja [6]

Answer:

-5

Step-by-step explanation:

Perpendicular lines have negative reciprocal slopes.

4 0
3 years ago
Contribution margin ?
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Answer:

Contribution margin is a product's price minus all associated variable costs, resulting in the incremental profit earned for each unit sold.

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3 years ago
1. If 100% = 80, than 75% = ?
Sindrei [870]

Answer:

60

Step-by-step explanation:

100% = 80,

75% = 80/100*75= 60

5 0
2 years ago
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Movies are on sale for 3/4 the original price. If the original price is $16, what is the sale price?
Nesterboy [21]

If the original price is 16, then 3/4 of 16 is 12.

$12


Dividing 16 by 4 (the denominator), you get 4. Then 4 x 3 (the numerator) is 12.

5 0
3 years ago
If sine theta equals three over four, what are the values of cos θ and tan θ?
ratelena [41]

Answer:

In words, Cosine theta equals plus or minus square root of seven over 4,tangent theta equals plus or minus  three over root seven

Step-by-step explanation:

Given that sin ∅ =3/4 It means the ratio of the opposite side to the hypotenuse side is 3:4.

Using the Pythagoras theorem we can calculate the hypotenuse adjacent as follows.

a²+b²=c²

a²=c²-b²

a²=4²-3²

a²=16-9

a²=7

a=√7

Then Cos ∅= opposite/ adjacent

=√7/4

Then Tan ∅ = opposite/adjacent

=3/√7

In words, Cosine theta equals plus or minus square root of seven over 4,tangent theta equals plus or minus  three over root seven.

7 0
3 years ago
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