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3 years ago

6

What is the value of k in the function ƒ(x) = 112 - kx if ƒ(-3) = 121? k =

2 answers:

masha68 [24]3 years ago

5 0

Plug -3 into the function to get 112+3k=f(-3)=121.
So now can calculate k: 112+3k=121, 3k=9, k=3.

Oduvanchick [21]3 years ago

5 0

Ok to solve for k, take the function f(x) = 112 - kx plug in the x value, so that would be f(-3) now we know that f(-3) = 121 so how to solve for k is quite easy. In replace f(-3) with 121 and x with -3
so 121 = 112 - k(-3)
solve for k
subtract 112 from both sides
so that would give you 9 = -k(-3)
use the distributive property on -k(-3)
so that would be 3k = 9
divide both sides by 3
which gives you the answer k=3

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3 years ago

Use the Associative Property of Addition to write an expression equivalent to (n + 2) + 7. Which expression is equivalent to (n

insens350 [35]

Answer:

The correct answer is OB.

Step-by-step explanation:

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Let us remark that the Associative Property of Addition tells us that we can perform the sums in any order. So,

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3 years ago

Simplify the following radicals. 1. √16 2. √17 3. √18 4. √19 5. √20

Pavel [41]

Answer:

Step-by-step explanation:

$1) \sqrt{16}= \sqrt{4*4}=4\\\\\\2) \sqrt{17}$

This is the simplest form as 17 is a prime number.

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19 is a prime number. so it is the simplest form.

$5) \sqrt{20}= \sqrt{2*2*5}=2 \sqrt{5}$

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3 years ago

What is the probability that a phone number generated using the digits 1, 2, 2, 4, 5, 5, 6, and 2 is the number 654-5222

pochemuha

Answer:

336 ways

Step-by-step explanation:

The digits are 1, 2, 2, 4, 5, 5, 6, and 2 that is total eight digits.

The number 654-5222 contains 7 digits.

So, we have find The number of permutations for choosing 7 digits from 8 digits given above.

This can be done in following ways

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3 years ago

What is the y-intercept of the function, represented by the table of values below? x: -2,1,2,4,7 y: 14,8,6,2,-4

anastassius [24]

Answer:

The y-intercept is at y = 10.

Step-by-step explanation:

It will be between y = 14 and y = 7 because the corresponding x values are -2 and 1.

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Then an increase of 1 ( 1 to 2) in x gives decrease in y of 2 (8 to 6). The other values show the same pattern.

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7 0

3 years ago