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Paladinen [302]
3 years ago
6

What is the value of f(-2)? A. -2 B. -8 C. 8 D. 4

Mathematics
2 answers:
kotykmax [81]3 years ago
3 0
I think it is C
Thanks
mr Goodwill [35]3 years ago
3 0

Answer:

B. (-8)

Step-by-step explanation:

-2 falls in between the interval [-3,-1]

Therefore the equation would be f(x)=4x

.... f(-2)=4(-2)

4 x -2 = -8

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4 0
3 years ago
on july 20th 2018, 1 U.S. dollar (1$) war worth 0.87 euros (0.87) how much $150 was worth in euros on that day
Alchen [17]

Answer:

130.5 euros

Step-by-step explanation:

$150 x .87

130.5

3 0
3 years ago
Read 2 more answers
A survey of the students in Lance’s school found that 58% of the respondents want the school year lengthened, while 42% think it
alina1380 [7]
The margin of error of a given statistic is an amount that is allowed for in case of miscalculation or change of circumstances.

It is usually the radius or half of the width of the confidence interval of that statistic.

Given that a<span> survey of the students in Lance’s school found that 58% of the respondents want the school year lengthened, while 42% think it should remain the same. The margin of error of the survey is ±10%.

This means that 58% </span><span>± 10% of the </span>respondents want the school year lengthened, while 42% <span><span>± 10% think it should remain the same.</span>

Thus, from 48% to 68% </span><span><span>of the respondents want the school year lengthened, while from 32% to 52% <span>think it should remain the same.</span> </span>

Therefore, according to the survey data, at least 32% of students want the duration of the school year to remain unchanged, and at least 48% want the school year to be lengthened.</span>
7 0
3 years ago
Sam owes 5 dollars to x friends and $3 to her sister. She owes $23 altogether.
sergey [27]

Answer:

Sam owes 4 friends $5

Step-by-step explanation:

We can set up the equation

23 = 5x + 3

Subtract the 3 from both sides

20 = 5x

x = 4 friends

7 0
3 years ago
Sandra wants to evaluate 2 cot Her work is shown below. What did she do wrong?
Rashid [163]

Answer: The first option.


Step-by-step explanation:

1. You need to remember that:

- An even function is a function with the following property:

f(-x)=f(x)

- An odd function  is a function with the following property:

f(-x)=-f(x)

2. By definition, the contangent is an odd function, therefore you have that:

cot(-θ)=-cot(θ)

Then:

2cot(-\frac{9\pi}{2})\neq2cot(\frac{9\pi}{2})

3. So, you can coclude that the first step is wrong. Therefore, the answer is the first option.



8 0
3 years ago
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