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yawa3891 [41]
3 years ago
13

1) SHOW WORK: Evaluate f(-2):

Mathematics
2 answers:
timofeeve [1]3 years ago
5 0

Answer:

<h2>1) f(-2) = -10</h2><h2>2) f(8) = 60</h2>

Step-by-step explanation:

1)\\f(x)=3x-4\\\\f(-2)\to\text{put x = -2 to the equation of the function}\ f(x):\\\\f(-2)=3(-2)-4=-6-4=-10\\2)\\f(x)=x^2-4\\\\f(8)\to\text{put x = 8 to the equation of the function}\ f(x):\\\\f(8)=8^2-4=64-4=60

babymother [125]3 years ago
4 0

Answer:

- 10 and 60

Step-by-step explanation:

1

To evaluate f(- 2) substitute x = - 2 into f(x)

f(- 2) = (3 × - 2) - 4 = - 6 - 4 = - 10

2

To evaluate f(8) substitute x = 8 into f(x)

f(8) = 8² - 4 = 64 - 4 = 60

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Ming rented a bike from Ted's Bikes. It cost $13 plus $3 per hour. If Ming paid $31,
NeX [460]

Answer:

C, 6

Step-by-step explanation:

31-13 is 18, 18/3 is 6.

8 0
3 years ago
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What is the value of F(5) in the function below?
Sever21 [200]

Answer:

<h2>B. 243</h2><h2 />

Step-by-step explanation:

F(x) = 3^x

then

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6 0
4 years ago
Select the correct answer.<br> Which function is the inverse of function<br> f(x) = -2
Artemon [7]

Answer:

B

Step-by-step explanation:

let f(x) = y and rearrange making x the subject

y = \frac{x+2}{7} ( multiply both sides by 7 to clear the fraction )

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7y - 2 = x

Change y back into terms of x with x the inverse function, that is

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8 0
3 years ago
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Please help I'll give brainliest! This is number 6​
seraphim [82]

Answer:

< 1 = 125 degrees

< 2 = 55 degrees

< 3 = 125 degrees

< 4 = 55 degrees

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Step-by-step explanation:

1 and 3 are equal because they are vertical angles, therefore proving their congruence.

7 and 1 are equal because they're alternate exterior angles, which are congruent.

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7 0
3 years ago
What is the nth term?
kumpel [21]

Let a_k denote the <em>k</em>th term of the sequence. Then

a_k=a_1+d(k-1)

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The sum of the first <em>n</em> terms is

S_n=\displaystyle\sum_{k=1}^na_k=a_1+a_2+\cdots+a_{n-1}+a_n

From the formula for a_k, we get

S_n=\displaystyle\sum_{k=1}^n(a_1+d(k-1))=a_1\sum_{k=1}^n1+d\sum_{k=1}^n(k-1)

S_n=\displaystyle na_1+d\sum_{k=0}^{n-1}k

S_n=na_1+\dfrac{d(n-1)n}2

S_n=\dfrac n2(2a_1-d+dn)

So we have d=-5, and 2a_1-d=16 so that a_1=\frac{11}2.

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7 0
3 years ago
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