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3 years ago

Help guys and gals 10 points!!!!!

Mathematics

2 answers:

olga_2 [115]3 years ago

4 0

2x + y = 7

y = -2x + 7 where slope m = -2 and b= y intercept = 7

Answer is C

slope : -2 and y intercept = 7

kompoz [17]3 years ago

3 0

Answer:

The correct answer is C

Step-by-step explanation:

In order to find the answer to this question, you first must solve for y.

2x + y = 7 ----> Subtract 2x

y = -2x + 7

Now we can identify the slope as -2 due to the fact that it is the coefficient of x. We can also identify the intercept as 7, due to it being the constant at the end of the equation.

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Suppose the cost of publishing x books is C(x) = 10000 + 25<img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%7D" id="TexFormula1" ti

dusya [7]

Answer:

$\frac{dC}{dQ} \approx 1.25$ , $C(101)-C(100) = 1.247$ , $\delta = 0.24\,\%$

Step-by-step explanation:

The marginal cost function is:

$\frac{dC}{dQ} = 12.5\cdot x^{-\frac{1}{2} }$

The marginal cost for 100 books is:

$\frac{dC}{dQ} \approx 1.25$

The difference is:

$C(101)-C(100) = 25\cdot (101^{\frac{1}{2} }-100^{\frac{1}{2} })$

$C(101)-C(100) = 1.247$

The relative error is:

$\delta = \frac{|1.25-1.247|}{1.25}\times 100\,\%$

$\delta = 0.24\,\%$

6 0

3 years ago

Simplify the expression<br> 13 (9x)

Ratling [72]

13(9x)

13 * 9x = 117x

5 0

3 years ago

Read 2 more answers

4x + y< 2

bulgar [2K]

The two inequalities can be rewritten as

$\begin{cases}y-2\end{cases}$

The solution is composed by every point below the graph of the line $y=-4x+2$ , and above the horizontal line $y=-2$

To draw the line $y=-4x+2$ we can build a little table (only 2 points are required):

$\begin{array}{c|c}x&y\\0&2\\1&-2\end{array}$

So, if you draw the points (0,2) and (1, -2) and connect them, you'll have your line.

To draw the line $y=-2$ , simply pick any point with y coordinate -2, for example (0, -2), and draw a horizontal line.

Choose the above/below areas as specified above to solve the system.

5 0

3 years ago

By selling old CD Sarah has a store credit of $153 a new CD cost $18 what are the problem numbers of new cCD Sarah can buy

DiKsa [7]

Rileyflipflop, $\frac{153}{18}$ = 8 $\frac{1}{2}$ , since she can't buy half a CD, she's limited to no more than 8 CDs. If x = the cost of one CD, then x CDs cost $18x. Since we are limited to $153, our equation looks like... 18x < 153x < 8 $\frac{1}{2}$ Again, since we can't buy half a CD, your answer should actually be... x ≤ 8 since we can buy 8 CDs or fewer.

4 0

3 years ago

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goblinko [34]

Hey there!

Here is a graph of the points:

A scatterplot is a graph, but the points won't be able to connect in a straight line, and they have no relation.

A line of best fit is a line that goes evenly through the points, or as best as it could.

6 0

3 years ago