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Step2247 [10]
3 years ago
6

Please help and show how u did it im confused please help thanks

Mathematics
1 answer:
VARVARA [1.3K]3 years ago
7 0
#2, Y=8, x=3
because if you subsitute those variables in,
8=3+5
4x3+8=20
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Which of the following figures has 90 rotation symmetry?
garik1379 [7]
It would be a rectangle
6 0
3 years ago
F(x)=x^2-x-1 What is the average rate of change of f over the interval -1<=x<=1
nalin [4]
In calculus, we use derivatives to find the instantaneous rate of change at any point on a graph. To find the average rate of change, we just find the slope of the secant line that intercepts two points on the graph.

We find slope with the following equation:

m =  \frac{y_1 - y_2}{x_1-x_2}

In this case, we are looking for the slope from x = -1 to x = 1. We have both x values, so next we need the y values.

F(-1) = (-1)^2 - (-1) - 1 = 1

F(1) = (1)^2 - (1) - 1 = -1

Now plug in the x and y values to find the slope:

\frac{1-(-1)}{-1-1} =-1

The answer is -1.
6 0
3 years ago
Consider the standard normal curve given.
Harman [31]

Answer:

mean: 30

standard dev: 5

the data point 37 is more than

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Y=-x^2<br> y=-7x^2<br> y=2/3x^2
valentinak56 [21]
Y = -x²
y = -7x²
<u>y = 2/3x²</u>
<u>3y</u> = <u>-7 1/3x²
</u> 3         3
  y = -2 4/9x
7 0
3 years ago
An analysis of the decay of 10 grams of an unstable element over time was completed and is displayed in the computer output.
Lady bird [3.3K]

The equation of the least-squared regression line is: In(Element) = 2.305 - 0.101(Time).

<h3>What is a regression line?</h3>

A regression line displays the connection between scattered data points in any set. It shows the relation between the dependent y variable and independent x variables when there is a linear pattern.

According to the given problem,

From the table we can see,

ln(Element) is the dependent variable and Time is the independent variable.

The constant = 2.305,

Time = -0.101

Hence, we can conclude, our least squared regression line will be

In (Element) = 2.305 - 0.101 (Time).

Learn more about regression line here: brainly.com/question/7656407

#SPJ2

6 0
2 years ago
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