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Romashka [77]
3 years ago
10

Can you describe multiplying and dividing signed numbers in the real world? plz Explain

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
7 0

The example I would be using is the level of a see-saw and take a point 1 /x of the way amid the middle and the left end. If you change the point vertically by f feet, the far right finish transfers vertically by f×−x feet. If you push down, f would be negative then you are multiplying two negative numbers for a positive result, this means that the other end moves up.

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Which of the following is a monomial <br><br>A. 5x^2+2x+3<br>B. √x-1<br>C. 4x<br>D. 3/x​
earnstyle [38]
C. 4x

Have a good day ;)

7 0
3 years ago
Mr. McKay wrote an algebra test with a total of 15 questions consisting of multiple choice and short response style questions. M
tankabanditka [31]

Step-by-step explanation:

x = number of multiple choice questions

y = number of short response questions

x + y = 15

5x + 10y = 100

=>

x + 2y = 20

let's subtract the first from the second equation :

x + 2y = 20

- x + y = 15

--------------------

0 y = 5

x + y = 15

x + 5 = 15

x = 10

to graph you need to consider both equations as linear functions. and you need to transform them into e.g. a slope intercept form : y = ax + b

a is the slope, b is the y- intercept.

x + y = 15

transforms to

y = -x + 15

this line goes e.g. through the points (0, 15) and (1, 14).

and

x + 2y = 20

transforms to

2y = -x + 20

y = -x/2 + 10

this line goes e.g through (0, 10) and (2, 9).

the crossing point of both lines is the solution and should therefore be the point (10, 5) as calculated above.

5 0
3 years ago
4. x^2+13x=-42
Mrrafil [7]
x^2+13x=-42\ \ \ |+42\\\\x^2+13x+42=0\\\\x^2+6x+7x+42=0\\\\x(x+6)+7(x+6)=0\\\\(x+6)(x+7)=0\iff x+6=0\ \vee\ x+7=0\\\\x=-6\ \vee\ x=-7

Anaswer: <span>a. x = -6 or x = -7</span>

8 0
4 years ago
Please help with this!
egoroff_w [7]

Answer:

u gotta divide the 7.5% and the other number that is says (can see the question but there)

8 0
3 years ago
A box of granola bars contains 3 chocolate chip bars, 2 peanut butter bars, 1 lemon bar and 4 raisin bars. Tasha will randomly s
jeyben [28]

Answer:

FOR LEMON = 1/10

FOR RAISIN = 4/9

Step-by-step explanation:

7 0
3 years ago
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