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blagie [28]
3 years ago
7

Why does the multiplicative inverse of a number have the same sign as the number?

Mathematics
1 answer:
denis23 [38]3 years ago
7 0
<span>Look at the definition of multiplicative inverse. If two numbers are multiplicative inverses of each other, then by definition, their product will be equal to 1. And 1 is a positive number. If both numbers being multiplied are positive, then the result is positive. And of both numbers being multiplied are negative, then the result is still positive. But if one number is positive and the other is negative, then the result is negative. So if you want a positive result, then both numbers you're multiplying have to have the same sign. And since we want a result of 1 for multiplicative inverses and since 1 is positive, then the numbers being multiplied have to have the same sign.</span>
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Explain how to use two bar diagrams to find 45% of $60.
algol [13]
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3 0
3 years ago
Which question can be represented by the equation ?
GarryVolchara [31]

Answer:

First, let's write the problem.

4+3s-9s=22

Add like terms,

4-6s=22

Subtract 4 from both sides.

4-6s-4=22-4

-6s=18

Divide both sides by -6.

\frac{-6s}{-6}=\frac{18}{-6}

Our final answer would be,

s=-3

You can feel free to let me know if you have any questions regarding this!

Thanks!

Step-by-step explanation:

3 0
3 years ago
The graph of the piecewise function f(x) is shown.
iris [78.8K]
1. The range of a function is the set of all values that f can produce for all the x-es in the domain.

2. If we are given the graph, in order to find the range, we project the graph into the y axis. Informally, we draw the "shadow" of the graph into the y axis as in the FIGURE atached.

3. The range is <span>D || {y | −5 ≤ y ≤ −1}</span>

6 0
3 years ago
Read 2 more answers
Question 6(Multiple Choice Worth 1 points) (06.01 LC) Choose the correct classification of 5x + 2x2 − 8 by number of terms and b
Yakvenalex [24]

Question 7: Choose the correct simplification of the expression (3x − 6)(2x2 − 4x − 5)

Answer:

7. 6x³ - 12x² + 12x + 15

Step-by-step explanation:

(3x-6)(2x² - 4x - 5)

3x • 2x² = 6x³

3x • -4x = -12x²

3x • -5 = -15

-6 • 2x² = -12x²

-6 • -4x = 24x

-6 • -5 = 30

combine terms

6x³ - 12x² - 15 - 12x² + 24x + 30

combine like terms

6x³ - 24x² + 24x + 15

hope this helps :)

in the future, only ask one question per brainly submission. thanks!

7 0
3 years ago
Please help! (listing BRAINLIST and giving points) ​:)​
stepladder [879]

Answer:

(a) = 60

(b) = 70

Step-by-step explanation:

(a) Sum of all the angles of a triangle is 180

This is an equilateral Triangle

which means all the sides are equal since all the sides are equal that means all the angles are equal

x + x + x = 180 \\ 3x = 180 \\ x =  \frac{180}{3}  \\ x = 60

(b) this is an isosceles triangle with two equal sides that means the two opposite angles are equal

40 + x + x = 180 \\ 40 + 2x = 180 \\ 2x = 180 - 40 \\ 2x = 140 \\ x = 70

3 0
3 years ago
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