Rewrite the number in scientific notation.
The earth's diameter is about 7,917 miles.
7.917 x 10^3 miles
100
The rate of change of a line is called...
slope
(rise over run)
100
You need this in order to apply the Pythagorean Theorem.
Right Triangle
100
On a scatterplot, what do you call a data point that does not fit with the rest of the data?
An outlier.
100
Combine like terms.
-2+2x+3(x+1)-3x
2x+1
200
Rewrite the number in scientific notation.
A hydrogen atom is about 0.0000000106 cm across.
1.06 x 10^8 cm
200
In slope-intercept form, b represents...
The y-intercept, where the line crosses the y-axis.
200
The longest side of a right triangle, opposite the right angle.
Hypotenuse
200
What are the three types of correlation?
Positive correlation, negative correlation, and no correlation.
200
Combine like terms.
2(x+1+x)-3(x-1)+7+x-5
2x+7
300
Subtract:
7.25 x 10^3
- 5.75 x 10^2
6.675 x 10^3
300
What is the slope-intercept form of the equation:
3y-9=6x
y=2x+3
300
A triangle has a leg that is 6 feet long and a hypotenuse that is 10 feet long. How long is the other leg?
8 feet
300
How can you make a prediction using a scatterplot?
Use the line of best fit.
300
Solve for x.
3(x+7)=27+2(x+7)
x=20
400
Multiply:
3.0 x 10^5 by
5.0 x 10^-2
1.5 x 10^4
400
How many solutions are there?
y=2x+7
y=-2x+5
There is one solution, because the lines do not have the same slope.
400
A triangle has sides measuring 5, 8, 10. What kind of triangle is it?
It is an acute triangle--NOT a right triangle.
400
What is the slope between the points (-2,4) and (1,3)?
Rise: -1
Run: 3
Slope: -1/3
400
Solve for x.
x(x+2)=2x+49
x=7
500
A basketball's volume is about 4.559 x 10^2 cubic inches. The volume of a classroom is about 1.493 x 10^7 cubic inches. How many basketballs would fit in the classroom?
About 3,317 basketballs.
500
What is the solution to the system of equations:
2y=4x+8
y+5x=4
The solution is (0, 4) because the lines cross at that point. They have the same y-intercept.
500
A ladder is leaning against the wall. The base of the ladder is 5 feet from the wall. The ladder is 12 feet long. How high up the wall does the ladder touch?
√119, or ~10.9, feet
500
What is the distance between the points (0, 4) and (3, 0)?
The distance is 5 units. You can use the points as the hypotenuse of a 3, 4, 5 right triangle.