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sweet-ann [11.9K]
3 years ago
15

Evaluate the expression 10x^-2y^-1 if x= -2, y = 1

Mathematics
1 answer:
Talja [164]3 years ago
6 0

10x^-2y^-1.

Plug -2 in for x and 1 in for y.

10(-2)^-2(1)^-1 = 0.25 or 1/4

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a line passes through the point -2 and five and has a slope of 2/3 points A(x,3) and B(-2,y)lie on the line
olasank [31]
A and B lie on the line, yes, but what specifically are you supposed to do?  Looks like your problem statement was cut off before you'd finished typing it in.

You say your line passes thru (-2,5) and has a slope of 2/3?  Then, using the point-slope formula,

y-5 = (2/3)(x+2)  This is the general equation for your line.

Now let's play around with B(-2,y).  Suppose we subst. the x-coordinate of B, which is -2, into the equation   y-5 = (2/3)(x+2); we get y-5 = (2/3)(-2+2) = 0.  This tells us that y must be 5.  But we already knew that!!

So, please review the original problems with its instructions and this discussion and tell me what you need to know from this point on.



7 0
3 years ago
URGENT Write the equations of a line parallel to y = -1/3x-4 thru (6,-4)
mars1129 [50]

y=-1/3x-2. Hope this helped! :)

7 0
3 years ago
Read 2 more answers
A passenger car weighs 4.5x10³ units. Which unit of measure was used?
german
Im sure the correct answer is "Pounds" 

Hope it helps :)
6 0
4 years ago
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Age of car = 4 years. Original cost = $13,850. The current market value is $
Helen [10]

Using an exponential function, supposing that the value decays 10% a year, it is found that the current market value is $9,087.

<h3>What is an exponential function?</h3>

A decaying exponential function is modeled by:

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In which:

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In this problem, supposing a decay of 10% a year, and the original value of $13,850, the parameters are A(0) = 13850, r = 0.1.

Hence, the value of the car in 4 years is given by:

A(t) = A(0)(1 - r)^t

A(4) = 13850(0.9)^4

A(4) =  9087.

More can be learned about exponential functions at brainly.com/question/25537936

6 0
2 years ago
True or false: if m=11, then 12m - 16 = 112
alexandr402 [8]
false, the real answer is 116
5 0
3 years ago
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