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3 years ago

9

Find f(2 + x) If f(x) = 4x - 5

1 answer:

Sindrei [870]3 years ago

4 0

Answer:

Replacing x with 3 in 4x-5 tells us f(3) = 7

Step-by-step explanation:

to evaluate f (3), just replace all x in f(x) = 4x - 5 with 3 :

f(3) =4(3) - 5 = 12 - 5= 7

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I got the answer but i need to know how did she get that answer

kiruha [24]

If you round your numbers that is how you find your answer. Rounding rules: 5 or more round up to the next number. 4 or less stays the same. This problem requires you to round to the whole number.

1.25 rounds to 1
-2.69 round to -3

so the answer is 1 + (-3)

4 0

3 years ago

Jupiter is 3 times the size of Neptune. If the diameter of Jupiter is 88,736 miles, what is the diameter of Neptune?

blagie [28]

Answer:

29,579 miles

Step-by-step explanation:

Divide Jupiter`s diameter by 3 which is 29,578.66 miles rounded up is 29,579 miles

4 0

3 years ago

HELP!Please solve! this!!

Angelina_Jolie [31]

Answer:

Recursive formula for geometric sequence

$a_{n}=a_{n-1}\times r$

is $a_{n}=a_{n-1}\times 6$

and explicit formula for geometric sequence $a_{n}=a_{1}^{r-1}$ is

$a_{n}=(\frac{1}{2})^{6-1}$

Step-by-step explanation:

Given sequence is $\frac{1}{2},3,18,108,648,...$

To find the recursive and explicit formula for this sequence:

Let $a_{1}=\frac{1}{2},a_{2}=3,a_{3}=18,a_{4}=108,a_{5}=648,...$

To find the common ratio r:

$r=\frac{a_{2}}{a_{1}}$

$=\frac{3}{\frac{1}{2}}$

$=3\times 2$

$=6$

Therefore r=6

$r=\frac{a_{3}}{a_{2}}$

$=\frac{18}{3}$

$=6$

Therefore r=6

Therefore the common ration r=6

Therefore the given sequence is geometric sequence

Recursive formula for geometric sequence is $a_{n}=a_{n-1}\times r$

$a_{n}=a_{n-1}\times 6$

and explicit formula is $a_{n}=a_{1}^{r-1}$

$a_{n}=(\frac{1}{2})^{6-1}$

$=(\frac{1}{2})^{5}$

$=\frac{1}{32}$

Therefore $a_{n}=\frac{1}{32}$

8 0

3 years ago

Read 2 more answers

3. A)Find the next number in the sequence.

USPshnik [31]

9514 1404 393

Answer:

1/3; geometric

Step-by-step explanation:

Apparently, your sequence is ...

81, 27, 9, 3, 1, ...

The differences between these numbers vary, but the ratio of each to the one before is a constant:

27/81 = 9/27 = 3/9 = 1/3

The sequence is geometric with a common ratio of 1/3. The next number in the sequence is (1)(1/3) = 1/3.

7 0

3 years ago

Rosa finds the product of 32 and 96. she rewrites 96 as a sum or difference of two numbers and uses the distributive property. w

Nady [450]

Solution:

We are given with the two numbers=32 and 96

Product of the given numbers= $32*96= 3072$

But Rosa rewrites the 96 as a sum or difference of two numbers and uses the distributive property

As we know, the Distributive property is $a(b+c)= ab+ac$

Now, $32*96 = 32*(100-4) = 3200-128$

So, option 'd' is correct

5 0

3 years ago