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lord [1]
3 years ago
6

Which expression is equivalent to (4 + 7i)(3 + 4i)?

Mathematics
1 answer:
ANTONII [103]3 years ago
4 0

Answer:

the answer is -16+37i

Step-by-step explanation:

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Deepak is a landscaper who charges $30 for each job he does plus an additional $15 for each hour he works. He only accepts jobs
BartSMP [9]

Answer:

30+15x\geq 90

Step-by-step explanation:

Deepak charges for each Job = $30

An additional charges for working each hour = $15

Let x be the number of hours he worked for each job.

So,additional charges for working x hours = 15 x

So,he earns in total at each job = 30+15x

We are also given that He only accepts jobs if he will earn at least $90 the job.

This means he must earn $90 or more than that .

So, the inequality becomes:

30+15x\geq 90

Hence an  inequality to determine x, the number of hours he must work during each job in order to accomplish this is 30+15x\geq 90

4 0
3 years ago
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Find the value of x when 6-4x=7x-9x-8
liraira [26]

Answer:

x=7

Step-by-step explanation:

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5 0
3 years ago
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andrey2020 [161]
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7 0
3 years ago
Solve for x 4 ( x + 3 ) < 3 ( x + 5 )
Marianna [84]

Answer:   x < 3

<u>Step-by-step explanation:</u>

4(x + 3) < 3(x + 5)

4x + 12 < 3x + 15          <em> Distributed</em>

 x + 12 < 15                   <em>Subtracted 3x from both sides</em>

       x  < 3                     <em>Subtracted 12 from both sides</em>

5 0
3 years ago
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Find the area of an inscribed 100-gon if the radius of the circle is 1 unit.
nexus9112 [7]
A polygon inscribed in a circle, luckily, has a derived formula already. It is:

A = (nr²/2)[sin (360/n)]

where n is the number of sides of the polygon and r is the radius of the circle. For this problem, n = 100 and r = 1. Substituting this to the equation,

A = (100(1)²/2)[sin (360/100)]
A = 3.14 square units

Thus, the 100-gon has an area of 3.14 square units. 
3 0
3 years ago
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