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riadik2000 [5.3K]
3 years ago
8

Please Help me I really need it :)

Mathematics
1 answer:
lapo4ka [179]3 years ago
5 0

Answer:

C

Step-by-step explanation:

For the given intervals

( - ∞, - 5) ← use any value < - 5 but not - 5, the parenthesis ) indicates that x is less than - 5 but not equal to - 5

(- 5, - 1) ← - 4, - 3, - 2 can be used but not - 5 or - 1

(- 1, 4) ← 0, 1, 2, 3 can be used but not - 1 or 4

(4, ∞ ) ← use any value > 4 but not 4

Hence

3 can be used in (- 1, 4)

- 6 can be used in (- ∞, - 5)

zero can be used in (- 1, 4)

- 5 cannot be used in any of the given intervals

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Grady marks down some $4.09 pens to $3.59 for a week and then marks them back up to $4.09. Find the percent of increase and the
emmainna [20.7K]

Answer:

Percentage decrease ( from $4.09 to $3.59) is 0.1% ( Rounded to nearest tenth)

Percentage increase (from $3.59 to 4.09) is 0.1% ( Rounded to nearest tenth)

Percentages are not same for the both price changes. As we can see from the calculations percentage change from $3.59 to $4.09 is higher.

Step-by-step explanation:

$4.09 has been changed to $3.59.

Percent change = [(Value after  - Value before) / Value before]*100

                          =\frac{3.59-4.09}{4.09}*100%

                          =\frac{-0.5}{4.09}*100%

                          =-0.122249%

                           =-0.1% ( Rounded to nearest tenth)

Percentage decrease is 0.1% ( Rounded to nearest tenth)

Now lets calculate the percentage change from $3.59 to $4.09.

Percent change = [(Value after  - Value before) / Value before]*100

                          =\frac{4.09-3.59}{3.59}*100%

                          =\frac{0.5}{3.59}*100%

                          =0.13927%

                           =0.1% ( Rounded to nearest tenth)

Percentage increase is 0.1% ( Rounded to nearest tenth)

Percentages are not same for the both price changes. As we can see from the calculations percentage change from $3.59 to $4.09 is higher.

6 0
3 years ago
please help me I have a lot more I need help on or I will fail this semester of college so please help me!!!
slamgirl [31]

Answer:

We cant see none bro or sis we dont judge here

4 0
2 years ago
4.) f(x) = 2x? – x+3<br> a.) opens up or down<br> b.) min or max
ioda

Answer:

A

Step-by-step explanation:

There answer

5 0
3 years ago
Find the value of x to the power of 2 when x = 5
Minchanka [31]

Answer:

32

Step-by-step explanation:

2^5=?

2x2=4x2=8x2=16x2=32

3 0
2 years ago
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It takes 5 hours for a boat to travel 25 miles upstream. The same boat can travel 30 miles downstream in 2 hours. Find the speed
loris [4]

Answer:

so 5 miles upstream and 15 miles downstream

Step-by-step explanation:

25/5=5

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3 0
2 years ago
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