3 years ago

A student started solving the system of equations by elimination and made a mistake in solving x. What is the error?

Mathematics

1 answer:

Lorico [155]3 years ago

5 0

Answer is A.

step 1 , 16 was not multiplied by 9
should be

54x - 9y = 144

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3 years ago

If p(x) = 2x2 – 4x and q(x) = x – 3, what is (p circle q) (x)?

mamaluj [8]

Answer:

2x^2 - 16x + 30

Step-by-step explanation:

Here, we want to get the composite function;

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All we have to do here is to replace the x value in p(x) by the totality of q(x)

we have this as ;

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2 years ago

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melamori03 [73]

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Step-by-step explanation:

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3 years ago

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Sophie [7]

The general slope-intercept form equation is:

$\begin{gathered} y=mx+b \\ \text{Wher m is the slope and b is the y-intercept value} \end{gathered}$

In this case, m=-2 and with the point (4, 10) we can find the value of b:

$\begin{gathered} We\text{ evalute the equation in the point (x, y) = (4 , 10):} \\ 10=-2\cdot4+b \\ 10=-8+b \\ b=10+8=18 \end{gathered}$

We found that b = 18, so:

$y=-2x+18$

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1 year ago

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Answer:

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3 years ago

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