Answer:
b
Step-by-step explanation:
Hi there! To find the slope of the line, you do y2 - y1 / x2 - x1. That means you subtract the first y-coordinate from the second y-coordinate and the first x-coordinate from the second x-coordinate. Plug in the values in order to get 6 - 8 / 4 - 8. When you do that, you get -2/-4 or simply 1/2 when simplified. The slope of the line that goes through those points is 1/2.
Answer:
Distance from Earth to Proxima Centauri (in scientific notation) = kilometers
Step-by-step explanation:
We need the conversion between Astronomical Unit and Kilometers.
The conversion is:
1 AU = 1.496*10^8 km
or rounded, given in this problem,
1 AU = km
We need the distance from Earth to Proxima Centauri:
AU * kilometers
When multiplying two numbers in scientific notation, we have to "multiply the coefficients" and "add the exponents".
Lets do this:
Distance from Earth to Proxima Centauri (in scientific notation) = kilometers
Answer:
4y^(2)+14y+31
Step-by-step explanation:
First you need to do (y+7)(y+7)
y^2+7y+7y+49
y^2+14y+49
Add it all together
y^2+14y+49+3y^2-15
4y^(2)+14y+31