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3 years ago

Can someone please help me with these problems? Any number is ok.

Mathematics

1 answer:

Alex Ar [27]3 years ago

5 0

26) x+x+1+2x+x+3 simplified it is 5x+4 because you need to add all the like terms. when you plug in 3 for x the equation turns into 5(3) +4 so your final answer is 19.

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Let f(x) = x2 − 3x − 7. Find f(−3)

uranmaximum [27]

Substituting -3 for x, we have: (-3)^2-3*-3-7. This simplifies to 9+9-7, or 11.

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3 years ago

The total value of the money in her piggy bank is $7.75. If Brielle has 63 nickels, write and solve a linear equation to find th

Nataly [62]

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3 years ago

Find the x-intercept and y-intercept of the liné.<br> - 6x + 5y = 21

Hunter-Best [27]

Answer:

x=-3.5 or -7/2 (same thing)

y=21/5

Step-by-step explanation:

x intercept is when y=0

y intercept is when x=0

x intercept is

-6x=21

x=21/-6

x=-3.5

y intercept is

5y=21

y=21/5

7 0

3 years ago

Choose the function whose graph is given by:

katen-ka-za [31]

Answer:

D. $y=\tan (x-\pi)+2$

Step-by-step explanation:

We are given the graph of the transformed tangent function.

As, we can see that the graph is shifted 2 units upwards.

That is, the parent function is translated 2 units up.

So, the new function will be of the form, $y=\tan (x)+2$ .

Thus, options A and C are not correct.

Moreover, 'If a function f(x) has period P, then the function cf(bx) will have period $\frac{P}{|b|}$ .

Also, form the figure, we see that the period of the graphed function is $\pi$ .

Since, $y=\tan (x)$ have period $\pi$ .

So, function in option B will have period $\frac{\pi}{2}$ , which is not possible.

<em>Further, function in option D have period $\pi$ .</em>

Thus, the equation of the graphed function is, $y=\tan (x-\pi)+2$ .

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3 years ago

Read 2 more answers

How to find a slope of a line

max2010maxim [7]

Answer:

The slope of a line characterizes the direction of a line. To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points

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2 years ago