Answer:
B. y = (x + 3)^2 - 17
Step-by-step explanation:
When Andy completes the square, he adds and subtracts the square of half the x-coefficient. That is, he adds and subtracts (6/2)² = 9:
... y = x² +6x +9 -8 -9
... y = (x² +6x +9) -17
... y = (x +3)² -17 . . . . . . . . matches selection B
Answer:
Step-by-step explanation:
You need to use distributive property and multiply each term of the binomial "3x+7" (that is 3x, and 7) by each term of the trinomial "
" taking care of their appropriate signs, and then combine like terms until there is no more than one term for each power of "x". It is also customary to order the final terms in descending order of power of "x".
Let's start by multiplying as indicated above:
![(2x^2+5x-3)*(3x+7)=\\=2x^2\,*\,3x+2x^2\,*\,7\,+5x*3x+5x*7-3*3x-3*7=\\=6x^3+14x^2+15x^2+35x-9x-21=\\=6x^3+[14x^2+15x^2]+[35x-9x]-21=\\=6x^3+29x^2+26x-21](https://tex.z-dn.net/?f=%282x%5E2%2B5x-3%29%2A%283x%2B7%29%3D%5C%5C%3D2x%5E2%5C%2C%2A%5C%2C3x%2B2x%5E2%5C%2C%2A%5C%2C7%5C%2C%2B5x%2A3x%2B5x%2A7-3%2A3x-3%2A7%3D%5C%5C%3D6x%5E3%2B14x%5E2%2B15x%5E2%2B35x-9x-21%3D%5C%5C%3D6x%5E3%2B%5B14x%5E2%2B15x%5E2%5D%2B%5B35x-9x%5D-21%3D%5C%5C%3D6x%5E3%2B29x%5E2%2B26x-21)
Each sheet is 3 rows and 3 stamps per row, each sheet contains 9 stamps (3*3). For six sheets, multiply 9 stamps per sheet for 6 sheets (9*6), which results in 54 stamps.
Step-by-step explanation:
x= number of lawns Jonas needs to mow
40x+650=6750
Now Solve!!!
First subtract 650 from both sides
40x=6100
Now divide by 40
x=152.5 lawns
Jonas can't mow 1/2 a lawn, so he would have to mow 153.
The height of cylinder is 5.73 meters.
Further explanation:
Given
The formula for calculating volume of cylinder is:
Putting the values of volume, radius and pi
The height of cylinder is 5.73 meters.
Keywords: Volume of cylinder, Surface area of cylinder
Learn more about volume of cylinder at:
#LearnwithBrainly
