If f(x) = 3x2 - 2x+4 and g(x) = 5x + 6x - 8, find (f

17. A celebrity makes $0.05 for each like they get on

MariettaO [177]

Answer:

its A

Step-by-step explanation:

Its A because its .05 cents but every time it gets a like it gets a like so that's why

7 0

3 years ago

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The square of a number decreased by 3 times the number 28 find all possible values for the number

stealth61 [152]

Question:

The square of a number decreased by 3 times the number is 28 find all possible values for the number

Answer:

The possible values of number are 7 and -4

Solution:

Given that the square of a number decreased by 3 times the number is 28

To find: all possible values of number

Let "a" be the unknown number

From given information,

square of a number decreased by 3 times the number = 28

$a^2 - 3a = 28$

$a^2 - 3a - 28 = 0$

Let us solve the above quadratic equation

$\text {For a quadratic equation } a x^{2}+b x+c=0, \text { where } a \neq 0$

$x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

Using the above formula,

$\text { For } a^{2}-3 a-28=0 \text { we have } a=1, b=-3, c=-28$

$\begin{aligned}&a=\frac{-(-3) \pm \sqrt{(-3)^{2}-4(1)(-28)}}{2 \times 1}\\\\&a=\frac{3 \pm \sqrt{9+112}}{2}\\\\&a=\frac{3 \pm \sqrt{121}}{2}=\frac{3 \pm 11}{2}\\\\&a=\frac{3+11}{2} \text { or } a=\frac{3-11}{2}\\\\&a=7 \text { or } a=-4\end{aligned}$

Thus the possible values of number are 7 and -4

5 0

3 years ago

Brian made 72 widgets. If kelly and miranda together made three times as many widgets as brian, how many more widgets did they m

Agata [3.3K]

72 x 3 = 216 ÷ 2 = 108

8 0

3 years ago

A streaming music site changed its format to focus on previously unreleased music from rising artists. The site manager now want

nika2105 [10]

Answer:

D) The manager should fail to reject the null hypothesis; there is not enough evidence to conclude that the number of unique daily listeners has changed.

Step-by-step explanation:

The scenario indicates the null hypotheses and alternative hypotheses are

Null hypotheses: The number of unique daily listeners hasn't changed.

Alternative hypotheses: The number of unique daily listeners has changed.

The null hypothesis is rejected if the calculated p-value is less significance level.

We are given that p-value is 0.0743 and confidence level=0.95.

Significance level =α=1-0.95=0.05.

As we can see the p-value is greater than significance level, so, we fail to reject the null hypotheses at 5% significance level.

Thus, we conclude at the 95% confidence level that the manager should fail to reject the null hypothesis; there is not enough evidence to conclude that the number of unique daily listeners has changed

8 0

2 years ago

Which best describes the scatter plot.

Alexus [3.1K]

Answer:

Either strong positive or moderate positive

Step-by-step explanation:

not sure but would guess strong

3 0

2 years ago

If f(x) = 3x2 - 2x+4 and g(x) = 5x + 6x - 8, find (f - g)(x)