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makkiz [27]
3 years ago
15

Subtract 8+7i from 4-16i​

Mathematics
2 answers:
White raven [17]3 years ago
8 0

Answer:

-4 -23i

Step-by-step explanation:

(4-16i) - (8+7i)

Distribute the minus sign

4-16i -8-7i

Combine like terms

4-8   -16i -7i

-4 -23i

Arada [10]3 years ago
6 0

Answer

12-9i  but in order its -9i+12

Step-by-step explanation:

since 8 and 4 are both positive add them up for 12 and 7i & -16 is -9i and the variable always comes first (a rule in math)

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ASAP!!!!!!!!! Please show process!!! Using law of sines!!!!!!!! Thank you so much
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4 0
2 years ago
Which matrix can be multiplied to the left of a vector matrix to get a new vector matrix ?
oksano4ka [1.4K]

Answer:  The answer is (B).


Step-by-step explanation:  We are given four options and we are to select which matrix can be multiplied to the left of a vector matrix to get a new vector matrix. The order of a vector matrix is either n × 1  or  1 × n.

For (A): The order of the matrix is 2 × 1. If we multiply this matrix by a vector matrix of order 1 × 2, then the resulting matrix will be of order 2 × 2, which is not a vector matrix.

For (B): The order of the matrix is 3  × 2. If we multiply this matrix by a vector matrix of order 2 × 1, then the resulting matrix will be of order 3 × 1, which is a new vector matrix.

For (C): The order of the matrix is 2  × 2. If we multiply this matrix by a vector matrix of order 2 × 1, then the resulting matrix will be of order 2 × 1, which is a vector matrix of order same as before.

For (D): The order of the matrix is 1  × 2. If we multiply this matrix by a vector matrix of order 2 × 1, then the resulting matrix will be of order 1 × 1, which is a not vector matrix.

Thus, the correct option is (B).

5 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7B%28%20%5Cfrac%7B1%7D%7B8%7D%20%20-%20x%29%7D%20%20%3D%20%20-%20%20%5Cfrac%
Rashid [163]

∛(1/8 - <em>x</em>) = -1/2

Take the 3rd power of both sides and solve:

(∛(1/8 - <em>x</em>))³ = (-1/2)³

1/8 - <em>x</em> = -1/8

2/8 = <em>x</em>

<em>x</em> = 1/4

7 0
2 years ago
The door on a model building is 10 inches tall. The door on the actual building is 4 yards tall. What was the scale used?
pychu [463]
The scale is 14.4 inches = 1 yard
3 0
2 years ago
What is 4x+ 9y +3 (x+y) simplified?
RoseWind [281]

Answer:

7x+12y

Step-by-step explanation:

Simplify

4x+9y+3(x+y)

<em>Use the distributive property to multiply 3 by x+y. </em>

4x+9y+3x+3y

<em>Combine 4x and 3x to get 7x. </em>

7x+9y+3y

<em>Combine 9y and 3y to get 12y. </em>

7x+12y

8 0
2 years ago
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