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3 years ago

Write -4i+(1/4-5i)-(-3/4+8i)+17i as a complex number in the standard form

Mathematics

1 answer:

Ann [662]3 years ago

8 0

Answer:

Step-by-step explanation:

Eliminate parentheses using the distributive property.

= -4i +1/4 -5i +3/4 -8i +17i

= (1/4 +3/4) +i(-4 -5 -8 +17)

= 1 + 0i

= 1

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Solve the proportion below.

melamori03 [73]

Cross multiply

19(x) = 30(9.5)

Simplify

19x = 285

Divide 19 from both sides

19x/19 = 285/19

x = 285/19

x = 15

B. 15 is your answer

hope this helps

8 0

2 years ago

Read 2 more answers

Find the value g(-2), where g is defined below. g(x) = 2x^2- 4x – 4

DanielleElmas [232]

Answer:

Step-by-step explanation:

For this question, simply plug in -2 for x:

$g(-2)=2(-2)^2-4(-2)-4\\g(-2)=2(4)+8-4\\g(-2)=8+8-4\\g(-2)=12$

Hope this helps!!

8 0

3 years ago

a string is 14.9 meters long and needs to be cut into smaller pieces of 0.52 meter each. what is the greatest number of pieces y

alex41 [277]

Answer:

28 pieces

Step-by-step explanation:

14.9 ÷ 0.52 = 28.653

8 0

2 years ago

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An angelfish was 1 1/2 inches long when it was bought. Now it is 2 1/3 inches long.

____ [38]

Earlier, The length of the angelfish = $1 \frac{1}{2}$ inches

Now, the length of angelfish = $2 \frac{1}{3}$ inches

We have to determine the grown length of angelfish

= $2 \frac{1}{3}$ - $1 \frac{1}{2}$

= $\frac{7}{3}- \frac{3}{2}$

LCM of '2' and '3' is '6',

= $\frac{14-9}{6}$

= $\frac{5}{6}$ inch

Therefore, the angelfish has grown by $\frac{5}{6}$ inch.

We have to determine the increased length of angelfish in feet.

Since $1 inch = \frac{1}{12}$ foot

So, $\frac{5}{6} inch = \frac{5}{6} \times \frac{1}{12} = \frac{5}{72}$

= 0.069 foot.

7 0

3 years ago

Read 2 more answers

Find the percent of change from the first value to the second. 72: 81 -

nordsb [41]

Answer:

+12.5%

Step-by-step explanation:

This is rather simple. Subtract 72 from 81, then put the difference over 72. Then, multiply that by 100.

(81 - 72)/72 * 100

Subtract 72 from 81 to get 9

9/72 * 100

Multiply 9 by 100 to get 900

900/72

Simplify the above fraction by cancelling out 9.

100/8

Divide 100 by 8 to get 12.5%

The percent of change is +12.5%

5 0

2 years ago