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Anettt [7]
3 years ago
7

Evaluate the expression below when x = 4 and y = 12. 5х^2 — Зу

Mathematics
1 answer:
Zina [86]3 years ago
8 0

Answer:

44

Step-by-step explanation:

x = 4 and y = 12.

5х² - 3у

20x - 3y

80 - 36

44

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Which function represents a vertical stretch of an exponential function?
nika2105 [10]

Answer:

A. f(x)=3(\frac{1}{2})^x

Step-by-step explanation:

The options are:

A. f(x)=3(\frac{1}{2})^x\\\\B. f(x)=\frac{1}{2}(3)^x\\\\C. f(x)=(3)^{2x}\\\\ D. f(x)=3^{(\frac{1}{2}x)}

For this exercise it is important to remember that, by definition, the Exponential parent functions have the form shown below:

f(x) = a^x

Where "a" is the base.

There are several transformations for a function f(x), some of those transformations are shown below:

1. If  bf(x) and  b>1, then the function is stretched vertically by a factor of "b".

2. If   bf(x)  and 0, then the function is  compressed vertically by a factor of "b"

Therefore, based on the information given above, you can identify that the function that represents a vertical stretch of an Exponential function, is the one given in the Option A. This is:

f(x)=3(\frac{1}{2})^x

Where the factor is:

b=3

And 3>1

7 0
3 years ago
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Solve for 2x2- 7x + 16 = 20 and find the sum of the solutions
beks73 [17]
I actually got zero for this when I did this in phothomath
8 0
2 years ago
Find the domain of: y = 3x + 1
Vedmedyk [2.9K]

y = 3x + 1

It's a linear function. The domain of linear function is the set of all real numbers.

D=\mathbb{R}=(-\infty,\ \infty)

6 0
3 years ago
Solve the equation 3.5(2.25+x)=14
larisa86 [58]

Answer:

x=1.75

Step-by-step explanation:

14/3.5=4-2.25=1.75.

6 0
3 years ago
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yarga [219]

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Step-by-step explanation:

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7 0
3 years ago
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