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3 years ago

Write the inequality shown by the graph.

Mathematics

2 answers:

Marta_Voda [28]3 years ago

8 0

Answer:

m<3.5

Step-by-step explanation:

The open circle indicates less than or greater than

Sever21 [200]3 years ago

5 0

$\huge\boxed{B, m < 3.5}$

The circle is open meaning that it should not have a line underneath it.

The line is pointing to the left meaning it is less than

Therefore, your answer is m <3.5

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What option is it pls help 1 2 3 4

Verizon [17]

Answer: B

Step-by-step explanation:

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4 years ago

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Complete the equation for the linear function whose graph contains the point (-1,2) and has a slope of 0.9.

Mnenie [13.5K]

Plug it into point-slope form.

y - y1 = m(x - x1)

Where y1 is the y-value of the point, x1 is the x-value, and 'm' is the slope.

So plug in -1 for x1, 2 for y1, and 0.9 for 'm':

y - 2 = 0.9(x + 1)

Simplify to get in slope-intercept form:

Distribute 0.9 into the parenthesis:

y - 2 = 0.9x + 0.9

Add 2 to both sides:

y = 0.9x + 2.9

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4 years ago

Taking a test i don’t know anything about please help

PilotLPTM [1.2K]

Answer:

See below for answers and explanations

Step-by-step explanation:

Problem 4:

The line of regression is $\hat y = a+bx$ where:

$a=\overline y-b \overline x$

$b=\frac{r*s_y}{s_x}$

We are given that $\overline y=75$ , $s_y=8$ , $\overline x=280$ , $s_x=30$ , and $r=0.60$ , therefore our slope, $b$ , is:

$b=\frac{r*s_y}{s_x}$

$b=\frac{(0.60)(8)}{30}$

$b=0.16$

Therefore, the slope of the regression line is 0.16, which can be used along with the values of $\overline y$ and $\overline x$ to find the constant $a$ :

$a=\overline y-b \overline x$

$a=75-(0.16)(280)$

$a=30.2$

This means our final regression line is $\hat y = 30.2 + 0.16x$

Problem 5:

The slope, $b=0.16$ , means that for every 1 point earned for a student's pre-exam total, their final exam score will increase by 0.16 points for each point they earned on the pre-exam.

Problem 6:

The y-intercept (or constant), $a=30.2$ , means that if a student's pre-exam total were 0, then they would expect to get a 30.2 on the final exam.

Problem 7:

$R^{2}=(0.60)^{2}=0.36=36\%$

Problem 8:

The fraction of variability (aka. coefficient of determination), $R^2$ , means that a certain proportion (or percentage) of the variance in the response variable can be explained by the explanatory variable. In context, this means that 36% of the variance in final exam scores can be explained by the pre-exam scores.

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3 years ago

Create a list of steps, in order, that will solve the following equation 2(x+2)^2-5=93

solong [7]

Answer:

x = (-7,7)

Step-by-step explanation:

1.add 5 on both side

2.divide each side of the equation by 2

3.take the square root of each side of the equation to solve for x

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3 years ago

The mean age of 5 people in a room is 39 years.

alexgriva [62]

Answer:

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3 years ago

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