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avanturin [10]
4 years ago
10

What are the rules for multiplying signed numbers?

Mathematics
2 answers:
trapecia [35]4 years ago
6 0
We can only do arithmetic in the usual way.  To calculate 5(−2), we have to do 5·<span> 2 = 10 -- and then decide on the sign.  Is it +10 or −10?  For the answer, we have the followng Rule of Signs.</span>
vazorg [7]4 years ago
6 0
When you multiply two negative signed answers the overall answer will be positive. But when you multiply one number that is positive and one number that is negative, the overall answer will be negative. I hope this was what you were looking for!
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MrRissso [65]
Your answer would be C 300 your welcome
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3 years ago
A bottle of shampoo was on sale for $6.45.
schepotkina [342]

Answer:

$7 for the first question

$6.50 for the last one

4 0
3 years ago
Find the maximum rate of change of f at the given point and the direction in which it occurs. f(p, q) = 8qe−p + 4pe−q, (0, 0) ma
Pachacha [2.7K]

Answer:

Step-by-step explanation:

Given \ f (p,q) = 8qe^{-p} + 4pe^{-q}  \  where \ P_o(0,0) \\ \text{thus the gradient of f is: }  \\ \\  \bigtriangledown f(p,q) = \Big(\dfrac{\partial f}{\partial p}, \dfrac{\partial f}{\partial q} \Big) \\ \\  \dfrac{\partial f}{\partial p} = -8qe^{-p} + 4pe^{-q} \\ \\ \dfrac{\partial f}{\partial p} = 8qe^{-p} - 4pe^{-q}  \\ \\  Then: \bigtriangledown f(p.q) = (-4qe^{-p}+ 8qe^{-q}, 4qe^{-p}- 8qe^{-q}) \\ \\ f(0,0) = (-4*(0)e^{-0}+ 8*(0)e^{-(0)}, 4*(0)e^{-(0)}- 8*(0)e^{-(0)})  \\ \\  = (0+8,4-0)  = (8.4)

\Big| \Big | \bigtriangledown f(0,0) = \sqrt{(8)^2+4^2}  \\ \\ = \sqrt{64+16} \\ \\ =  \sqrt{80}

\mathbf{the \ direction \ of \ maximum \ change  \ is }= \mathbf{\sqrt{80}}  \\ \\  \mathbf{direction }(8,4)

7 0
3 years ago
What is the solution to the equation 2.4m − 1.2 = −0.6m?
klasskru [66]


The answer would be m=0.4

2.4m - 1.2 = -0.6m

Subtract 2.4m on each side

-1.2 = -3.0m

divide by -3.0

you get 0.4

4 0
3 years ago
Read 2 more answers
The ratio of the measures of the angles of a triangle is 2:3:10. What is the measure of the smallest angle?
cricket20 [7]

Answer w2

2

3

?

10

or

10

Step-by-step explanation:

8 0
3 years ago
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