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allsm [11]
3 years ago
6

Given function f(x) =3x^2-4 what is f(-2)

Mathematics
1 answer:
artcher [175]3 years ago
7 0
F(-2)=8 this is the answer. you just substitue

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HEEEEEEEEEEEEELP WILL GIVE TEN POINTS
nikklg [1K]

2c + 4d = 92

substitute the given values into the expression and evaluate

2c + 4d = (2 × 30) + (4 × 8) = 60 + 32 = 92


7 0
3 years ago
Read 2 more answers
Ethan pays 52.80 for some more f the boxes work out the number of boxes he buys 1 box 2.40 2 4.80 and 5 12 10 24
Slav-nsk [51]
The pricing of the boxes seems to be consistently 2.40 per box. Ethan's cost is
.. 52.80 = 2.40 * (# of boxes)
.. 52.80/2.40 = (# of boxes)
.. 22 = # of boxes

Ethan has bought 22 boxes for 52.80.
5 0
3 years ago
write the equation of the line, in standard form, that is perpendicular to y=3x-2 and passes through (-7,2)
34kurt

Answer:

x+3y=-1

Step-by-step explanation:

y=3x-2 so m=3 old slope

the new slope must be -1/3 (opposite reciprocal of the old slope).

y-y0=m*(x-x0)

y-2=-1/3*(x-(-7))

y-2=-1/3x-1/3*7

y-2=-1/3x-7/3

3y-6=-x-7

The standard form for linear equations in two variables is Ax+By=C.

x+3y=6-7

x+3y=-1

8 0
2 years ago
· y = 3x - 7<br> Find the slope
coldgirl [10]

Answer:

3

Step-by-step explanation:

the slope of an equation (y=mx+b) is always "m", or the coefficient right infront of x. in this case, y=3x-7, 3=m, -7=b. m is the slope, so the slope is 3.

3 0
3 years ago
Read 2 more answers
What is the a, b, and r for y=3.6(1.25)^x
tia_tia [17]

Answer:

a=3.6, v=1.25 and r=25%

Step-by-step explanation:

The given exponential function is

y = 3.6 {(1.25)}^{x}

We compare to the form:

y = a{(b)}^{x}

We have a=3.6, b=1.25

The r is the percentage of increase or decrease.

We realized there is a 25% increase because

y = 3.6 {(1 + 25\%)}^{x}

Hence

r = 25\%

8 0
3 years ago
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