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Sergio [31]
3 years ago
8

In your own words, explain 3 or more sentences "how do you multiply rational number?" Tell how the signs, negative and positive,

affect what you do. Identify what sign the product will have. Explain why the product will have a positive or negative sign.
Mathematics
2 answers:
vagabundo [1.1K]3 years ago
8 0

Answer:

Rules & Examples of Integers multiplication.

Step-by-step explanation:

A rational number  is a number that can be expressed as a fraction of integers (positive or negative numbers). Every integer is a rational number.

They are multiplied based on following rules :

  • Positive (+) x Positive (+) = Positive (+) , +2 x +2 = 4
  • Positive (+) x Negative (-) = Negative (-) , +2 x -2 = -4
  • Negative (-) x Positive (+) = Negative (-) , -2 x +2 = -4
  • Negative (-) x Negative (-) = Positive (+) , -2 x -2 = 4

Hoochie [10]3 years ago
8 0

Answer:

negitive

Step-by-step explanation:

just did it

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Use the sine law: sinB/b = sinA/a

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∠ B = 18.94° ≈ 19°
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Evaluate a + b for a = 43 and b = -29.<br> HELP ME I ONLY HAVE 1 hourrr
worty [1.4K]

Answer:

14

Step-by-step explanation:

Substitute the given values for a and b into the expression and evaluate

a + b = 43 + (- 29) = 43 - 29 = 14

4 0
3 years ago
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A 75% increase followed by a 33 1/2% decrease​
o-na [289]

After 75% increase followed by a 33 1/2% decrease the net increased is 16.375%.

<u>Solution:</u>

Need to determine net percentage increase or decrease when a value is increased by 75% and then decreased by 33 \frac{1}{2} \% that is 33.5%.

Let’s assume initial value be represented by variable x.

75 \% \text { decrease means } x+75 \% \text { of } x=x+\frac{75}{100} x=x+0.75 x=1.75 x

Now there is decrease of 33.5%

\begin{array}{l}{33.5 \% \text { decrease means } 1.75 x-33.5 \% \text { of } 1.75 x=1.75 x-\frac{33.5}{100} \times 1.75 x} \\\\ {=1.75 x-(0.335 \times 1.75) x=1.75 x-0.58625 x} \\\\ {=1.16375 x}\end{array}

\text { So increase in percentage }=\frac{\text { final value-initial value}}{\text { intial value }}

=\frac{1.16375 x-x}{x} \times 100=16.375 \%

Hence after 75% increase followed by a 33 \frac{1}{2} \% decrease the net increased is 16.375%.

8 0
3 years ago
A square has side length 4 cm. What is the volume
gayaneshka [121]

Answer:

64 cubic cm

Step-by-step explanation:

i think u mean cube btw for volume but if u meant area its 16 cm squared

3 0
3 years ago
Answer for this it’s to hard for me
Ilia_Sergeevich [38]

Answer:

Option A

Step-by-step explanation:

From the graph given in the picture,

Function 1

Rate of change = Slope of the line

Slope of a line passing through two points (x_1,y_1) and (x_2,y_2) is,

Slope = \frac{y_2-y_1}{x_2-x_1}

Therefore, slope of the given line which is passing through (1, 2) and (-1, -2)will be,

Rate of change = \frac{2+2}{1+1} = 2

Function 2

Equation of the line is,

y = \frac{1}{2}x+7

By comparing this equation with slope-intercept form of the equation,

y = mx + b

Here m = rate of change Or slope of the linear function  

Rate of change of function 2 = \frac{1}{2}

Therefore, rate of change of function 1 is higher than function 2.

Option A will be the answer.

7 0
3 years ago
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