3 years ago

State where a function has points of discontinuity

1 answer:

7 0

A function has points of discontinuity
• where it is undefined
• where the limit from the left is not the same as the limit from the right
• where the function definition at a point is not the same as the left and right limits at that point

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If f(x) = -x2 + 6x, what is f(-3)?

Sever21 [200]

Answer:

-12

Step-by-step explanation:

f(-3)= -(-3)2 + 6(-3)

= -(-6) -18

= 6 - 18

= - 12

8 0

3 years ago

<img src="https://tex.z-dn.net/?f=-24%5Cleq%203x-9" id="TexFormula1" title="-24\leq 3x-9" alt="-24\leq 3x-9" align="absmiddle" c

dybincka [34]

If your solving for x, you need to isolate/get the variable "x" by itself in the inequality:

-24 ≤ 3x - 9 First add 9 on both sides

-24 + 9 ≤ 3x - 9 + 9

-15 ≤ 3x Then divide 3 on both sides to get "x" by itself

$\frac{-15}{3} \leq \frac{3x}{3}$

-5 ≤ x [or x ≥ -5 if you prefer "x" to be on the left side]

8 0

3 years ago

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Shawn purchased $87.06 worth of merchandise at a department store. He gave the clerk $100. Round to the nearest whole dollar to

beks73 [17]

Answer:

rounded purchase: $87
estimated change: $13

Step-by-step explanation:

Rounded to the nearest dollar, the value $87.06 is $87.

This amount subtracted from $100 is the change Shawn will receive, about $13.

5 0

3 years ago

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What is the value of x?

Nonamiya [84]

X = 30 degrees.

See the attached image

7 0

3 years ago

What is 20(10 -7x)= -36

Dahasolnce [82]

Answer:

35/59

Step-by-step explanation:

200-140x=-36

-140x=-236

35x=59

x=35/59

4 0

3 years ago

Read 2 more answers