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3 years ago

Solve for x using the distributive property. 3(-3 - 3x) = 27

Mathematics

2 answers:

seraphim [82]3 years ago

8 0

Answer:

Step-by-step explanation:

here you go

step 1

3(-3 - 3x) = 27 equation

step 2

3(-3 - 3x) = 27 Distribute

-9x-9=27

step 3

-9x-9(+9)=27(+9) add 9

-9x=36

step 4

$\frac{-9x}{-9} =\frac{36}{-9}$ Divide both sides by 9

answer

x=-4

xeze [42]3 years ago

4 0

Answer:

-9-9x=27+9

-9x=36÷(-9)

x=-4

Step-by-step explanation:

prove me wrong

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Feliz [49]

I did get the wrong one but when you did the same time I got you a good j 8337378 so it is c

7 0

3 years ago

scoundrel [369]

For the first point, remember this simple rule: every exponential function $a^x$ always returns $a$ when evaluated at $x = 1$ . In fact, $a^1=a$ for every possible base $a$ .

So, we can see that the graph of the exponential passes through the point $(1,y)$ where $y$ appears to be between 1 and 2. So, the only feasible option would be $y = 1.8^x$ , because it passes throught the point $(1,1.8)$ because $f(1) = 1.8^1 = 1.8$ .

The other functions are wrong because:

$0.45^x$ would pass through $(1,0.45)$ , which would be between 0 and 1 on the y axis
$2.4^x$ would pass through $(1,2.4)$ , which would be between 2 and 3 on the y axis
$0.31^x$ would pass through $(1,0.31)$ , which would be between 0 and 1 on the y axis

As for the second question, you simply have to plug in the values: the function

$f(x) = 7^x$

means that you have to choose an input, x, and use it as exponent for 7. So, if you choose x=2, it means that you have to give exponent 2 to 7, i.e. you replace the x with the specific value, 2.

So, the expression becomes

$f(2) = 7^2 = 49$