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mylen [45]
3 years ago
13

The graph of a certain quadratic function does not cross the x-axis. Which of the following are possible values for the discrimi

nant? check all that apply.
a) 18
b) 0
c) -25
d) -7
Mathematics
1 answer:
irinina [24]3 years ago
3 0
The graph of a quadratic function does not cross the x-axis if the discriminant has negative value.
Answers:
C ) -25
D ) -7
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Let f(x) = 5x + 4 and g(a) = a2 − 4a + 4 2 . Find the function value. g(−2)
natta225 [31]

Answer:  54

<u>Step-by-step explanation:</u>

replace "a" with "-2" in the g-equation

g(a) = a² - 4a + 42

g(-2) = (-2)² - 4(-2) + 42

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What is the result of adding these two equations?
andre [41]

Answer:

x=103/265        y=18/53

Step-by-step explanation:

5x -9y=1-----------(i)

-7x+2y=-5-----------(ii)

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35x-63y=7---------eq(iii)

Multiplying eq 2 with 5 gives

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adding eq 3 qnd eq 4

35x-63y-35x+10y=7-25

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y=18/53--------eq5

Putting the value of y from eq 5 in eq 1

5x-9(18/53)=-5

5x- 162/53=-5

5x=-5 +162/53

5x= -265+162/53

5x=103/53

x=103/265

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