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4 years ago

-4x-15y=-17 what is the value of x?

Mathematics

1 answer:

balandron [24]4 years ago

4 0

Answer:

x = 17 /4 − 15 y /4

Step-by-step explanation:

Move all terms that don't contain x to the right side and solve.

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3 years ago

What is the solution to the system of equation?

dusya [7]

Answer:

(0, -4)

Step-by-step explanation:

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2 years ago

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3 years ago

For the matrices below. Find all (real) eigenvalues. A= [7 9] [0 9]

Jet001 [13]

Answer:

The answer is "9 and 7".

Step-by-step explanation:

Given:

$A=\left[\begin{array}{cc}7&9\\0&9\end{array}\right]$

Using formula:

$|A-\lambda \cdot I|= 0\\\\$

$\to |\left[\begin{array}{cc}7&9\\0&9\end{array}\right]-\lambda \left[\begin{array}{cc}1&0\\0&1\end{array}\right] |=0\\\\\\ \to |\left[\begin{array}{cc}7&9\\0&9\end{array}\right]- \left[\begin{array}{cc}\lambda&0\\0&\lambda\end{array}\right] |=0\\\\\\\to|\left[\begin{array}{cc}7-\lambda &9\\0&9-\lambda\end{array}\right]|=0\\\\\\\to|(7-\lambda)(9-\lambda)|=0\\\\\to (7-\lambda)(9-\lambda)=0\\\\\to 7-\lambda=0 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 9-\lambda=0\\\\$

$\to \lambda=7 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \lambda=9\\\\$

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3 years ago

Given h(x)=-x-4, find h (-6)

Mumz [18]

2

explanation:

h(x)= -x-4

h(-6) = -(-6)-4
h(-6) = 6-4
h(-6) = 2

5 0

3 years ago

Read 2 more answers