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KATRIN_1 [288]
3 years ago
5

A function f(x) s defined as f(x)=-8x^2. What is f(-3)?

Mathematics
2 answers:
lisabon 2012 [21]3 years ago
8 0
You substitute the x in the equation -8x^2 so it would be -8(-3)^2 so the answer would be -72
Semenov [28]3 years ago
5 0
f(-3)=-8\cdot(-3)^2\\
f(-3)=-8\cdot9\\
f(-3)=-72

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No links please. Fill in the blanks. 67ns=[?]x10^[?]s
cluponka [151]

Using scientific notation, it is found that:

67 ns = 6.7 \times 10^{-8}s

<h3>What is scientific notation?</h3>

A number in scientific notation is given by:

a \times 10^b

With the base being a \in [1, 10).

In this problem, the amount is of 67 ns.

Each ns has 10^{-9} seconds, hence:

67ns = 67 \times 10^{-9}s

We want the base between 1 and 10(exclusive), hence, we move the decimal digit one digit to the left and add one to the exponent, and the representation is:

67 ns = 6.7 \times 10^{-8}s

You can learn more about scientific notation at brainly.com/question/16394306

7 0
2 years ago
A farmer sells 7.6 kilograms of apples and pears at the farmer's market. 4/5 of this weight is
gtnhenbr [62]

Answer:

1.52

Step-by-step explanation:

5 0
3 years ago
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Write an equation of the line in standard form.
Andreyy89

Answer:

Ok to make this easier for us we should switch these equations into y=mx+b so that it's easier for us to identify the slope and y-intercept:

to switch into y=mx+b form do this:

3x-y=5

-y=5-3x

y=-5+3x

y=3x+(-5)

2y-15x=8

2y=8+15x

y=4+7 1/2x

y=7 1/2x+4

THe slope of any line in y=mx+b form is m. Therefore in this equation:

y=3x+(-5)     3 is the slope

The y intercept of any line is the +b:

y=7 1/2x+4 -therefore 4 in this equation is our y intercept.

Now we can construct our equation in y=mx+b then into standard form (Ax+By=C)

since 3 is our slope and 4 is our y intercept the equatuon is :

y=3x+4

NOw all we need to do is move this into standard form:

y=3x+4

-3x+y=4

-3x+y=4 is your final answer

-hope this helped

Step-by-step explanation:

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3 years ago
Which expression converts 100 inches per minute to feet per minute?
Travka [436]
The answer is (inches/min)* (1ft/12in)

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A spinner is divided into five colored sections that are not of equal size: red, blue,
coldgirl [10]
It would land on blue about 115 times. The spinner lands on blue roughly 23% of the time, and 115 is 23% of 500.
6 0
3 years ago
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