4 years ago

Evaluate 4 times a number Q + 25 when Q equals 2

Mathematics

1 answer:

madam [21]4 years ago

8 0

Answer:

4*(Q+25) Q=2

Step-by-step explanation:

4*(2+25) = 4*27 = 108

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A scatter plot is made to model the number of calories in different portions of fish sticks. The data used for the scatter plot

Taya2010 [7]

Solution: A scatter plot is made to model the number of calories in different portions of fish sticks. The data used for the scatter plot are shown in the table below:

Number of portions

5 3 8 6 1 4

Number of calories

250 150 400 300 50 200

What does the slope of the model represent?

Answer: The number of calories in each portion of fish sticks

3 0

3 years ago

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Find an equation of the straight line tangent, at the given point, to the level curve of the given function passing through that

Tcecarenko [31]

$f(2,-1)=2^2-(-1)^2=3$

so we're considering the level curve

$x^2-y^2=3$

The tangent line to this curve at (2, -1) will be the value of $\dfrac{\mathrm dy}{\mathrm dx}$ at this point. Differentiating yields

$2x-2y\dfrac{\mathrm dy}{\mathrm dx}=0\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac xy$

and so the slope of the tangent would be $\dfrac2{-1}=-2$ .

The tangent line then has equation

$y-(-1)=-2(x-2)\implies y=-2x+3$