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2 years ago

Which statement is true about this quadratic equation?

Mathematics

1 answer:

Masteriza [31]2 years ago

8 0

Answer:

There are two real roots because b²>4ac

in the equation, b²= 9² = 81.

4ac = 4×-4×-12= 72

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Describe a transformation of the graph of f(x)=x that results in the graph of g(x)=4x

Wittaler [7]

The graph g(x) is Steeper.

7 0

3 years ago

Saturday, nola bowled 3 games in her bowling league. she had a mean score of 115. the score of her first game was 110. the score

Elina [12.6K]

110+90+145=345
345 divided by 3=115

so the score of her third game was 145 points.
hope i helped! :)
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7 0

3 years ago

Read 2 more answers

The zeros of a function are the values of x x for which the function is equal to zero. Enter a number in each blank to make true

Anit [1.1K]

Answer:

1 or 5

Step-by-step explanation:

Given the function h(x)=(2x−2)(x−5)

The zeros of h(x) are the values of x for which h(x)=0

h(x)=(2x−2)(x−5)=0

Note that if a.b=0, either a=0 or b=0.

Appying the above,

If (2x−2)(x−5)=0

Then:

2x−2=0 or x-5=0

2x=2 or x=5

x=1 0r 5

The zeroes of h(x) as defined are 1 or 5.

8 0

3 years ago

If 75% is £45 what is the full cost

SpyIntel [72]

X × 75% = £45
x = £45 / 75%
x = £45 / 0,75
x = £60

6 0

3 years ago

Choose the model that represents the function

kirill [66]

Answer:

OPTION D

Step-by-step explanation:

We have to determine which option determines the function given above.

To determine the function, just substitute the values and compare LHS and RHS.

we have $f(4) = 18$

$f(-2) = -12$

$f(0) = -2$

$f(-3) = -17$

Here, $x$ is the domain and $f(x)$ is the co-doamin.

Therefore, $x = \{4, -2, 0, -3\}$

Now, OPTION A: $f(x) = 2x - 5$

Substitute x = 4. We get f(x) = 3 $\ne$ 18.

So, OPTION A is rejected.

Similarly, OPTION B: $f(x) = 5x + 2$

Substitute x = 4. We get f(4) = 22 $\ne$ 18.

It is rejected as well.

Now, for OPTION C: $f(x) = \frac{x}{2} - 5$

Substitute x = 4. We get f(4) = -3 $\ne$ 18.

So, OPTION C is also rejected.

OPTION D: $f(x) = 5x - 2$

Substitute x = 4. We get f(4) = 18.

Substitute the remaining points in domain as well. We notice that it exactly matches the given function. So, OPTION D is the answer.

8 0

3 years ago