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ipn [44]
2 years ago
10

Please solve this, i will mark brainliest

Mathematics
2 answers:
Anton [14]2 years ago
7 0

Answer:

k=-2

Step-by-step explanation:

Let's write the left hand side as a negative power, and 9 as a power of 3:

3^-^k=3^2 At this point, for the equality to still stand, the exponents have to be equal:

-k = 2 \rightarrow k=-2

Mashutka [201]2 years ago
5 0
(1/3)k = 9
3 -k = 3 2
-k=2
K=-2
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I need this question 2!

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The sum of Cathy's and Tony's ages is 65. Eight years ago, Cathy's age was 2/5 of Tony's age. How old are they now?
Viktor [21]
Let
x------> Cathy's<span> ages
</span>y------> Tony's ages

we know that
x+y=65-----> x=65-y-----> equation 1
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substitute equation 1 in equation 2
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the answer is
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7 0
3 years ago
Suppose the graph of a cubic polynomial function has the same zeroes and passes through the coordinate (0, -5). Write the equati
amid [387]
In this we know all three zeros and one point from which the graph pass.
So we will let specific cubic polynomial function of the form
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So required equation of cubic polynomial is
f(x) =  \frac{1}{6}(x^3 -10x^2+31x-30)

For finding y - intercept we simply plugin x = 0 in given equation.
As we know at x = 0 , value of function is -5.
So y - intercept is -5.
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