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MariettaO [177]
3 years ago
5

Given the function f (x) = 5x^2 - 2 find f (-3).​

Mathematics
1 answer:
ExtremeBDS [4]3 years ago
6 0

Answer:

Step-by-step explanation:

5(-3)^2 - 2

5(9) - 2

45 - 2 = 43

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Please help!! I don't get it!
Gre4nikov [31]

Answer:

64 times 7.5 and you will get your answer

Step-by-step explanation:

16*4=64

64*7.5=x

x is what you need to find

8 0
3 years ago
PLZ HELP!!!!!!!! due in 30 minutes im timed!
valentinak56 [21]

Option D:

Difference between g(x) and f(x) is 44.

Solution:

Let us first write the function of f(x).

Take any two points on the line (0, -1) and (-2, 0).

Here, x_1=0, y_1=-1, x_2=-2, y_2=0

Equation of a line:

$\frac{y-y_1}{x-x_1} =\frac{y_2-y_1}{x_2-x_1}

$\frac{y-(-1)}{x-0} =\frac{0-(-1)}{-2-0}

$\frac{y+1}{x} =\frac{1}{-2}

Do cross multiplication.

-2(y + 1) = x

-2y - 2 = x

Add 2 on both sides.

-2y = x + 2

Divide by -2 on both sides.

$y=-\frac{1}{2}x-1

y = -0.5x - 1

f(x) = -0.5x - 1

At x = 20,

f(20) = -0.5(20) - 1 = -11

g(x) = 1.5x + 3

g(20) = 1.5(20) + 3 = 33

Difference between g(x) and f(x)

            = g(20) - f(20)

            = 33 - (-11)

            = 33 + 11

            = 44

Difference between g(x) and f(x) is 44.

Option D is the correct answer.

4 0
3 years ago
The equinoxGroup of answer choicesis when the subsolar point is at one of the tropics.is the longest day of the year at any give
Maurinko [17]

Answer:

c. has 12 hours of day and 12 hours of night for all locations

Step-by-step explanation:

The equinox is the time of the year marked by a nearly equal length of day and night. This word has a Latin root meaning which stands for equality, hence the word 'equinox'. It usually falls on March 21, and September 23 of every year. On these days the sun is above the equator.

The equinox which occurs around September happens in the Northern Hemisphere and is also known as the Fall or Autumnal equinox. Whereas, the equinox which occurs at the Southern Hemisphere is also known as the Spring or Vernal equinox. During an equinox, the tilt of the earth is perpendicular to the sun.

3 0
4 years ago
What is 92x43 using standard algorithm <br> Plsss answer
Karo-lina-s [1.5K]
92x43 is 3,956!

I’m not quite show how I am supposed to show the standard algorithm here.
3 0
3 years ago
Read 2 more answers
)A mule deer can run one over four of a mile in 25 seconds. At this rate, which expression can be used to determine how fast a m
makvit [3.9K]
Well, if you take x to be 25 seconds, there are 2.4x in 1min. So, that multiplied by 60, would be 144x. Therefore, 1/4 multiplied by 144x should be the answer.
6 0
4 years ago
Read 2 more answers
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