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lutik1710 [3]
3 years ago
7

Which of the quadratic functions has the widest graph. Please help???

Mathematics
1 answer:
Alex73 [517]3 years ago
5 0
The less coefficient in front of x^2, the wider graph
the smallest coefficient is 1/5 , so the widest graph is  y=(1/5)x²
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Identify intervals on which the function is increasing, decreasing, or constant.
tigry1 [53]
G ( x ) = 2 - ( x - 7 )²
g ( x ) = 2 - ( x² - 14 x + 49 )
g ( x ) = 2 - x² + 14 x - 49
g ( x ) = - x² + 14 x - 47
The maximum of the function is at:
x= - b / 2 a
x = - 14 / ( - 2 ) = 7
Therefore the function is increasing form x ∈ ( - ∞, 7 ) and decreasing for x ∈ ( 7, +∞ ).
Answer:
C.   increasing, x < 7; decreasing x > 7.
3 0
3 years ago
Can someone please help me with this question<br>​
devlian [24]

Answer:

Its the alternative C because as you can see the dots ar placed in the following coordinates(sorry for my English). The first dot is placed (1, 4) the second is placed (2, 6) the third is (3, 10) and last is (4, 12)

3 0
3 years ago
B. 40 is 160% of what number?
Anton [14]

Answer:

25

Step-by-step explanation:

the question basically translates to

160% x n =40  

a little trick with percents I use is that the word "of" always means multiplication.

n=40/160%=25

6 0
2 years ago
Please help
Harman [31]

Answer:

we get \mathbf{gf(2)=-\frac{1}{3}}

Step-by-step explanation:

We are given:

f(x)=1-2x\\g(x)= \frac{1}{x}\\h(x)=x^3+1

We need to find value of gf(2)

gf(2)=g(f(2))

First putting f(x) inside of g(x) and then putting x=2

gf(x)=g(f(x))\\gf(x)=\frac{1}{1-2x}

Now putting x=2 to find gf(2)

gf(x)=\frac{1}{1-2x}\\gf(2)=\frac{1}{1-2(2)}\\gf(2)=\frac{1}{1-4}\\gf(2)=\frac{1}{-3}\\gf(2)=-\frac{1}{3}

So, we get \mathbf{gf(2)=-\frac{1}{3}}

3 0
3 years ago
The equation for the graph of A is
jekas [21]

Answer:

A: y = x²

B: y = -x

C: y = x

D: y = -x²

Step-by-step explanation:

4 0
2 years ago
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