12.1 x 3 and a half. pls explain if possible

Mathematics

1 answer:

wariber [46]2 years ago

7 0

Answer:

Step-by-step explanation:

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Which statement is true regarding the traits of scatterplots

Minchanka [31]

Here are the choices

The strength of a correlation is independent of whether the correlation of a scatterplot is positive or negative. A scatterplot with positive correlation can have either weak correlation or strong correlation.

The slope of a line is independent of whether the correlation of a scatterplot has positive or negative correlation. A scatterplot with a negative slope can have either positive correlation or negative correlation.

The nonlinear association of a scatterplot depends on whether it has a weak or strong correlation. A scatterplot with nonlinear association will have a strong correlation.

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It's a, because if it is positive, it can either be one skinny line, or one thick fat confusing line. Positive isn't perfect.

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2 years ago

2/5y + 1/10=1/5 y= <br><br> What does y equal?

netineya [11]

Answer:

Hi! The correct answer is y= -1/2

Step-by-step explanation:

<em><u>~Solve for y by simplifying both sides of the equation, then isolating the variable~</u></em>

4 0

3 years ago

Read 2 more answers

Precalc.

viktelen [127]

Domain: x>0.

$(\log_2x)^2+7\log_2x+12=0$

Substitute $t=\log_2x\in\mathbb{R}$ . We have:

$t^2+7t+12=0\\\\a=1\qquad b=7\qquad c=12\\\\\\\Delta=b^2-4ac=7^2-4\cdot1\cdot12=49-48=1\\\\\sqrt{\Delta}=\sqrt{1}=1\\\\\\
t_1=\dfrac{-b-\sqrt{\Delta}}{2a}=\dfrac{-7-1}{2}=\dfrac{-8}{2}=-4\\\\\\
t_2=\dfrac{-b+\sqrt{\Delta}}{2a}=\dfrac{-7+1}{2}=\dfrac{-6}{2}=-3$

For t₁ there will be:

$\log_2x=t_1\\\\\log_2x=-4\\\\2^{-4}=x\\\\x=\dfrac{1}{2^4}\\\\\\x=\dfrac{1}{16}=0,0625\\\\\\\boxed{x\approx0,063}$

and for t₂:

$\log_2x=t_2\\\\\log_2x=-3\\\\2^{-3}=x\\\\x=\dfrac{1}{2^3}\\\\\\x=\dfrac{1}{8}\\\\\\\boxed{x=0,125}$

Answer d)

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2 years ago

The figures shown are similar. What is the scale factor? Two similar pentagons, one pentagon with base 9 and one pentagon with b

Oksi-84 [34.3K]

$9:12=\frac{9}{12}=\frac{9:3}{12:3}=\boxed{\frac{3}{4}}\leftarrow\boxed{d.}$