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Lana71 [14]
3 years ago
13

I need help with this please help will give you brainiest.

Mathematics
1 answer:
svlad2 [7]3 years ago
8 0
10 for number 4 and 5 is -2q
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For the functions f(x) = x − 3 and g\left(x\right)=\frac{x+7}{2} g ( x ) = x + 7 2 , find [g∘f](x). Group of answer choices \fra
pychu [463]

Answer:

\textbf{$g(f(x)) = \frac{2x + 1}{2}$ }\\

Step-by-step explanation:

$ f(x) = x - 3 $$$$ g(x) = x + \frac{7}{2} $$\textup{To compute g(f(x))}$ \implies g(f(x)) = g(x - 3) $\\\textup{i.e., to substitute  $x - 3$ instead of x in g(x)}\\$ \therefore g(x - 3) = x - 3 + \frac{7}{2} $ \\\textup{Simplifying this we get:}\\\textbf{$$g(f(x)) = \frac{2x + 1}{2}$$}

8 0
3 years ago
The sales tax in a major city is 7%. Find the cost, including the tax charged on a purchase of $200.
Vitek1552 [10]

Answer:

$214

Step-by-step explanation:

200*0.07 = 14, 200 + 14 = 214

6 0
3 years ago
The height of an object after it is released can be modeled by the function mc016-1.jpg, where t is the number of seconds after
zzz [600]
The correct answer is b.
6 0
3 years ago
Read 2 more answers
Please help!!
timofeeve [1]

Answer:

y = 2/3x

Step-by-step explanation:

So we know, when lines are perpendicular that they share the same slope. The slope in the equation of y = 2/3x + 7 is 2/3x. So, we have our slope. Now, we just need to find our b. We plug in the point that you gave us into the equation y = mx + b.

3 = 2/3(2) + b

we multiply the denominator 3 by 2, then divide that by the numerator 2.

3 = 3 + b

subtract 3 from itself and from the opposite side of the equal side 3.

0 = b

in the end, there is no b for this equation. Our answer is

y = 2/3x

6 0
3 years ago
An exponentially function is expressed in the form y = axb^x . The relation represents a growth when _ and a decay when _ .
Sergio [31]

Answer:

The relation represents a growth when b>1 and a decay when 0<b<1

Step-by-step explanation:

Any function in the form f(x)= a(b^x), where a > 0, b > 0 and b not equal to 1 is called an exponential function with base b. If 0 < b < 1.  It is an example of an exponential decay. The general shape of an exponential with b > 1 is an example of exponential growth. An exponential function is expressed in the form y=a(b^x) The relation represents a growth when  b >1 and a decay when 0<b<1.

3 0
3 years ago
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