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3 years ago

Compute: a. (−10 + 9i) + (7 − 5i)

Mathematics

1 answer:

Aleonysh [2.5K]3 years ago

4 0

Answer:

4i - 3

Step-by-step explanation:

-10 + 9i + 7 - 5i

Collect like terms: 4i - 3

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1). Linear Combination (SHOW WORK)

Georgia [21]

Answer:

Part 1) The solution of the system of equations is (2,-5)

Part 2) The solution of the system of equations is (2,4)

Step-by-step explanation:

Part 1) Linear combination

we have

$3x+2y=-4$ -----> equation A

$4x-y=13$ -----> equation B

Multiply equation B by 2 both sides

$2(4x-y)=2*13$

$8x-2y=26$ -----> equation C

Adds equation A and equation C

$3x+2y=-4\\8x-2y=26\\-------\\3x+8x=-4+26\\11x=22\\x=2$

Find the value of y

$3(2)+2y=-4$

$2y=-4-6$

$2y=-10$

$y=-5$

The solution of the system of equations is (2,-5)

Part 2) By graph

$y=(1/2)x+3$ -----> equation A

$-3x+y=-2$ -----> equation B

we know that

The solution of the system of equations is the intersection point both graphs

Using a graphing tool

The intersection point is (2,4)

therefore

The solution of the system of equations is the point (2,4)

see the attached figure

8 0

3 years ago

Select the correct answer. Which type of fee is charged by brokers only when investors are buying and selling their assets? A. t

torisob [31]

Answer: I think A
Explanation: I’m not quite sure but I believe it’s A

3 0

3 years ago

If p=2 and q=3, evaluate the following expression:60/2q−p

RoseWind [281]

p = 2 , q = 3

= 60/2q - p

= 60/2*3 - 2

= 60/6 - 2

= 10-2

= 8

3 0

3 years ago

Read 2 more answers

A scale for a scale drawing is 12 cm:1 mm. which is larger the actual object or the scale drawing?

garri49 [273]

Answer:

scale drawing

Step-by-step explanation:

hope it helps :)

6 0

4 years ago

Suppose rafiq went to the nursey and bought a tree priced at 49.99 and two packages of fertilizer priced at 13.99 each. The sale

Mashutka [201]

Answer:

$83.04

Step-by-step explanation:

1. Add up all the prices (49.99, 13,99, 13.99) = 77.97

2. Tax is 6.5% (.065 in decimal form)

3. Multiply 77.97 * .065 = 5.06805

4. 5.06805 rounds to 5.07

5. Add the total purchase (77.97) to the tax (5.07) = 83.04

5 0

3 years ago