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Luden [163]
3 years ago
14

At how many points does the graph of the function below intersect the x-axis?

Mathematics
2 answers:
Ne4ueva [31]3 years ago
5 0

Answer:

A.0

Step-by-step explanation:

y=4x²- 9x + 9

The function will intersect the x-axis when  y = 0.

4x² - 9x + 9 = 0

a=4, b= -9, c=9

D=b² - 4ac = (-9)²- 4*4*9=81 - 144= - 63

D= -63, D<0, so the equation

4x² - 9x + 9 = 0 does not have real roots. That means that function    y=4x²- 9x + 9 does not intersect x- axis. So, answer is A. 0.

antoniya [11.8K]3 years ago
5 0

Answer:

0

Step-by-step explanation:

Apex

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I really neeed help ... please help me
Fofino [41]

Answer:

fist one is 36 and the second one is 238

Step-by-step explanation:

to find volume multiple length times width times height though in this case you only need to multiple two numbers to get the answer

3 0
3 years ago
Which of the following ordered pairs belongs to the graph of f(x)
Lera25 [3.4K]

Answer:

The second choice, (-1,\, 12).

Step-by-step explanation:

Note, that the expression y = f(x) is an equation. A point (x,\, y) is on the graph of y = f(x)\! if and only if the value of x and y satisfy this equation; that is: in other words, the y\!-coordinate of that point (the second number in the tuple) should be equal to f(x), which is equal to (-3\, x +9) (evaluated where x\! is equal to the first number in the tuple.

For each tuple in the choices, calculate the value of f(x) where x is equal to the first number of each tuple. Compare the result to the second number in that tuple. That choice corresponds to a valid point on y = f(x) only if these two numbers match.

  • First choice: x = 1, f(x) = f(1) = -3 + 9 = 6. That's not the same as the second number, -10. Therefore, this point isn't on the graph of y = f(x).
  • Second choice: x = -1, f(x) = f(-1) = (-3)\times (-1) + 9 = 3 + 9 = 12. That matches the second number in the tuple. Therefore, this point is on the graph of y = f(x).
  • Third choice: x = 2, f(x) = f(2) = (-3)\times 2 + 9 = 3. That's not the same as the second number, (-3). Therefore, this point isn't on the graph of y = f(x).
  • Fourth choice: x = -2, f(x) = f(-2) = (-3)\times (-2) + 9 = 15. That's not the same as the second number, 13. Therefore, this point isn't on the graph of y = f(x).
4 0
3 years ago
What is the difference between solving inequalities from equations
AVprozaik [17]

Answer:

An equation is a mathematical statement that shows the equal value of two expressions while an inequality is a mathematical statement that shows that an expression is lesser than or more than the other. 2. An equation shows the equality of two variables while an inequality shows the inequality of two variables.

4 0
2 years ago
Keith is a drummer who purchases his drumsticks online. When practicing with the newest pair, he notices they feel heavier than
Marina86 [1]

Answer: 0.0174

Step-by-step explanation:

Given : \mu=1.85\ \ ; \sigma=0.18

Let x be the random variable that represents  the weight of the drumsticks.

We assume that the weight of the drumsticks is normally distributed.

Now, the z-score for x=2.23 ,\because z=\dfrac{x-\mu}{\sigma}

\Rightarrow\ z=\dfrac{2.23-1.85}{0.18}\approx2.11\ \ \

Using z-value table , we have

P-value =P(x≥2.23)=P(z≥2.11)=1-P(z<2.11)=1-0.9825708

=0.0174292≈0.0174 [Rounded nearest 4 decimal places]

Hence, the  probability of the stick's weight being 2.23 oz or greater = 0.0174

6 0
4 years ago
What is an equation of the line that passes through the points ( 8 , − 1 ) and ( 4 , − 1 )
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Y=mx+c
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