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pychu [463]
2 years ago
5

Consider the sequence 100, 95, 90, 85, 80, 75 ... What is the value of f(8)?

Mathematics
1 answer:
MAVERICK [17]2 years ago
5 0

Answer:

f(8) = 65

Step-by-step explanation:

Find a pattern in the sequence. It might be an <u>arithmetic sequence</u> (always adds or subtract by a certain number), or a <u>geometric sequence</u> (always multiplies or divides by a certain number).

To find a pattern in this decreasing sequence, we find either the common difference or the common divisor of each pair of consecutive numbers.

• 100 - 95 = 5

• 95 - 90 = 5

• 90 - 85 = 5

• 85 - 80 = 5

• 80 - 75 = 5

Now, we know that this is an <u>arithmetic sequence</u>, and the common difference is <u>5</u>.

To calculate f(8), we find the 8th term in the sequence. We can do that by counting the terms in the sequence and using the common difference, 5, that we found, to continue the sequence.

• f(1) = 100

• f(2) = 95

• f(3) = 90

     ......

• f(7) = 70

• f(8) = 65

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X(x – 4) and x2 - 4x define the same function.
ycow [4]

Answer:

Yes, because x(x -4) is equivalent to x^2-4x

Step-by-step explanation:

x(x -4) and x^2-4x

x(x -4) = x^2 - 4x

Hope this helps!

5 0
2 years ago
I need help ASAP on number 8 b and c. Thank you
s344n2d4d5 [400]
I think you're having trouble because the equation you wrote for 8a has a slight typo.

The question says that the length is 9 less than twice the width. Your equation states the length is 9 times the width minus 2. So the length actually equals 2w – 9, meaning that w(2w – 9) = 180

Hope this helps! If you're still having trouble, let me know :)
6 0
3 years ago
Help ............. ​
NARA [144]

What kinda of math is this so i can answer..

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5 0
3 years ago
The measurement of a rectangular room on a scale drawing are 8cm x 6cm. If the scale use is 1 : 400, calculate the actual area o
rosijanka [135]

Answer:

768 m²

Step-by-step explanation:

8 x 400 = 3200 cm = 32 m

6 x 400 = 2400 cm = 24m

32 x 24 = 768 m²

8 0
2 years ago
Please help solve the ineaquality x over 3 is &lt; than 3
elena55 [62]
We have an inequation: 
x/3 < 3
⇒ x < 3*3
⇒ x < 9

The final answer is x < 9~
7 0
3 years ago
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