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Yuri [45]
3 years ago
8

6. 2x+(-4)y (if x = -4 and y=-2) Evaluate each expression using the variable replacement

Mathematics
2 answers:
aleksandr82 [10.1K]3 years ago
8 0

Answer:

-4

Step-by-step explanation:

( 2 * - 2 ) + ( -4 * - 2 )

= -4 + 8

= -4

ASHA 777 [7]3 years ago
3 0

Answer:

-4

Step-by-step explanation:

(2)(-2)+(-4)(-2)

=(-4) + 8

= (-4)

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The table below shows selected points from a function.
FrozenT [24]

Answer:

<em>True </em>

Step-by-step explanation:

<em>Rate Of Change Of Functions </em>

Given a function y=f(x), the rate of change of f can be computed as the slope of the tangent line in a specific point (by using derivatives), or an approximation by computing the slope of a secant line between two points (a,b) (c,d) that belong to the function. The slope can be calculated with the formula

\displaystyle m=\frac{d-b}{c-a}

If this value is calculated with any pair of points and it always results in the same, then the function is linear. If they are different, the function is non-linear.

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\displaystyle m=\frac{4-1}{2-1}=3

Now, we use the second and the third point (2,4) (3,9)

\displaystyle m=\frac{9-4}{3-2}=5

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6 0
3 years ago
25m + 100 - 24m - 75 = 68.
Maksim231197 [3]

25m+100−24m−75=68

Step 1: Simplify both sides of the equation.

25m+100−24m−75=68

25m+100+−24m+−75=68

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m+25=68

m+25=68

Step 2: Subtract 25 from both sides.

m+25−25=68−25

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Answer:

m=43

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