Use the distributive property to evaluate the following expression: 9 x (4 + 9) . Show your work in your answer.

Mathematics

1 answer:

AlekseyPX3 years ago

5 0

Answer:

9x + 81

Step-by-step explanation:

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Which is the additive inverse of the complex number -8+3i?

lawyer [7]

The additive inverse of a complex z is a complex number $-z,$ so that

$\mathsf{z+(-z)=-z+z=0+0i=0}$

Finding $-z:$

$\mathsf{z=-8+3i}\\\\\\ \mathsf{z+(-z)=0+0i}\\\\\ \mathsf{-8+3i+(-z)=0+0i}\\\\ \mathsf{-z=0+0i+8-3i}\\\\ \mathsf{-z=(0+8)+(0i-3i)}\\\\ \boxed{\begin{array}{c}\mathsf{-z=8-3i} \end{array}}\qquad\checkmark$

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Tags: <em>complex number additive inverse opposite algebra</em>

3 0

3 years ago

5х + 34 = -2 (1 - 7x) help me solve it step by step !

nataly862011 [7]

5x+34=-2(1-7x)

Steps:

5x+34=-2+14x
5x+34-14x= -2
-9x + 34= -2
-9x = -2-34
-9x = -36
X= -36/-9

Answer: x= 4

6 0

3 years ago

The sum of a number and its additive inverse is equal to?

Usimov [2.4K]

For example, the additive inverse of 12 is –12. The additive inverse of –3 is 3. Formally, the additive inverse of x is –x. Note: The sum of a number and its additive inverse is 0.

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3 years ago

If you take a number, times by 7 then subtract 1. You get the same as if you took the number, times by 5 then subtract 8. What i

valentinak56 [21]

Answer:

1 i think

Step-by-step explanation:

6 0

3 years ago

Aliyah $24 to spend on seven pencils. After buying them she had $10. How much did each pencil cost?

MaRussiya [10]

Each pencil cost $2.

Explanation: She had $24 before buying the pencils and after she had $10. 24-10=14 so the total she spent on pencils was $14. She bought 7 pencils so you divide 14 by 7 (14/7=2) which equals 2. So each pencil cost $2.

5 0

3 years ago

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