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Licemer1 [7]
3 years ago
10

Given f(x) = 8x + 25, find x when f(x) = 9.

Mathematics
1 answer:
elixir [45]3 years ago
7 0

Answer:

-2?

Step-by-step explanation:

You might be interested in
1
skelet666 [1.2K]

Step-by-step explanation:

f°g=f(g(x))

g(x)=x^2-6x

f(x)=1/x

f(g(x))=\frac{1}{x^2-6x}

if the denominator is zero the number is undefined which makes it not in the domain of the function

set x^2-6x equal to 0

the values for x is 0 or 6

so the only value that is not in the domain of f°g is 0 and 6

Hope that helps :)

6 0
2 years ago
Mary baked 30 cookies. Her family ate of them. Using D write an expression for the number of cookies that remained
Dahasolnce [82]

Answer:

30 divided by 2 = D

Step-by-step explanation:

None

8 0
3 years ago
En said the value of the expression 72-8^2 +6*3 is 50. What mistake did Ben make? Correct Ben’s mistake and give the value of th
posledela

Given:

72-\frac{8}{2}+6\times3

He does mistake in the order of giving preference.

We should give preference in the order, division, multiplication, addition, subtraction.

But, he gave the first preferrence to the subtraction.

72-8=64

Next, he used division

64/2=32

Next he adds 32 with 8.

So, he gets 50.

But the actual simplification is,

Simplifying we get,

\begin{gathered} 72-\frac{8}{2}+6\times3=72-4+18 \\ =68+18 \\ =86 \end{gathered}

Hence, the correct value of the expression is 86.

7 0
1 year ago
HELP PLEASE!! EXTRA POINTS AND BRAINLIEST WILL BE GIVEN!!
mezya [45]

Answer:

0.02651

Step-by-step explanation:

P(all 5 are boys) =

\frac{7}{12}  \times  \frac{6}{11} \times  \frac{5}{10}   \times  \frac{4}{9}  \times  \frac{3}{8}

= 0.02651 ( wow low)

3 0
3 years ago
How many words can be formed by using the W,X,Y,Z if repetitions is not allowed?
Setler [38]

Answer:

24

Step-by-step explanation:

What you have here is a permutation, seeing as each element can only be used once.

We have 4 letters initially, so we can choose any 1 as our first letter. We have 4 choices for our first letter

However, once we choose our first letter, we can't use it anymore, so, for our second letter, we can only choose from the remaining 3 letters.

Furthermore, once we choose our second letter, we can only choose our 3rd letter from the remaining two letters we didn't choose yet.

Finally, our last letter will always be the one we didn't choose the last 3 times. So there is only one choice here.

Going off of this, we have four choices for the 1st letter, three choices for the 2nd letter, two choices for the 3rd letter, and one choice for the 4th letter

The way to calculate how many permutations we have without repetition is using factorials

N!

Where N is the number of elements you have.

In this case, it would be 4!

4! is 4 * 3 * 2 * 1

Which equals 24

If you notice, each number in 4! is the number of options we have for each choice. 4, then 3, and so on

5 0
3 years ago
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