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Anastasy [175]
3 years ago
10

Given that f(x) = x + 4x evaluate f(-2).

Mathematics
1 answer:
Makovka662 [10]3 years ago
4 0
The answer is -10 because when u plug in -2 for x u get 4(-2)=-8 then -2+-8=-10
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John is building a fence around his home currently his fence measures 14 feet on each side but he wants to increase only the wid
nalin [4]

Answer:

The dimensions of rectangular fence are 14 feet and 20 feet.

Step-by-step explanation:

We are given the following in the question:

Length of rectangular fence = 14 feet

Width of fence = (14+x) feet

Area of rectangular field = 280 square feet

Area of rectangular field =

A= \text{Length}\times \text{Width}

Putting the values, we get,

280 = 14(14+x)\\\\14 + x = \dfrac{280}{14}\\\\14 + x = 20\\x =20-14\\x = 6

Thus, the dimensions of rectangular fence are 14 feet and 20 feet.

7 0
3 years ago
The minimum of the graph of a quadratic function is located at (–1, 2). The point (2, 20) is also on the parabola. Which functio
ss7ja [257]
The min or max of a parabola/quadratic function is the vertex

for
y=a(x-h)²+k
the vertex is (h,k)

so
vertex/min is at (-1,2)
h=-1
k=2

y=a(x-(-1))²+2
y=a(x+1)²+2
find a
given, (2,20) is on the graph

20=a(2+1)²+2
20=a(3)²+2
20=9a+2
minus 2 both sides
18=9a
divide by 9
2=a


y=2(x+1)²+2 is da equation

3rd one
f(x)=2(x+1)²+2
5 0
3 years ago
Anna spent 8 hours reading a book. This is twice as long as Kim spent reading her book. Write an
givi [52]

Answer:

8x2=h

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
84% of 72 with work. (Plz Help ) btw my name is Hannah
atroni [7]

Answer:

The answer is 60.48

Step-by-step explanation:

In order to find this, simply multiply the two terms together.

84% * 72

.84 * 72

60.48

8 0
3 years ago
Someone please help me
Fed [463]
Volume of bottom figure = 9 * 4 * 8.5 = 306 cubic centimeters

Volume of top figure = .5 * 1.5 * 2 * 4 = 6  cubic centimeters

TOTAL volume = 312 cc


7 0
3 years ago
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