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iragen [17]
3 years ago
15

Simplify the expression (4i)(2i)(-9i)

Mathematics
1 answer:
lakkis [162]3 years ago
7 0

Answer:

Step-by-step explanation:

(4i)*(2i)*(-9i) = 4*2*(-9) * i³           { i³ = -i}

                    = -72 *(-i)          

                   = 72i

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Look at the picture of a scaffold used to support construction workers. The height of the scaffold can be changed by adjusting t
Vikki [24]

Answer:

Triangle PQR is a right triangle therefore you can use the pythagorean theorem to find the length of PR which is the same as the hypothenuse

Step-by-step explanation:

Theorem:

(QP)² + (QR)² = (PR)²

(6)² + (14)² = 232 ⇒  (PR)² = 232  then PR = √232 = 15.23

If PR is adjusted to 16 feet then we use the Pythagorean theorem again to find the height QR

(QR)² + (14)² = (16)²

(QR)² = 256 - 196 = 60 ⇒ QR = √60 = 7.75.

8 0
3 years ago
-<br> How many terms are in -7x2 - 14x + 2 ?
Inessa05 [86]

Answer:

3

Step-by-step explanation:

7x² is the first term,

14x is the second term and

2 is the third term.

4 0
2 years ago
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What are the indicated measures
marissa [1.9K]
1. Solve for N
Add all terms together and set equal to 360
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26N= 364
N= 14
M<A = 4(14)= 56
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3. 8(14)-12= 100
4. 76
4 0
3 years ago
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A truck that can carry no more than 7100 lb is being used to transport refrigerators and upright pianos. Each refrigerator weigh
pishuonlain [190]

Let x be the number of refrigerators

Y be the number of pianos

So the inequality:

300x + 475y < 7100

So substitute 12 and 8 to the inequality

300(12) + 475(8) < 7100

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7400 < 7100 is not true

So it will overload the truck 

6 0
3 years ago
The answer for this math problem because I don’t really understand it
andreyandreev [35.5K]

Answer:

See below

Step-by-step explanation:

Start by subtracting 5.2 from both sides of the equation

  so  "subtraction property of equality "    I suppose ......

then the next step would be divide both sides by 2.5  

  which would be division property of equality  

3 0
2 years ago
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