![kprincess16r](/avatars/5949.jpg)
kprincess16r
20.09.2019 •
Mathematics
i'm confused..
solve each equation for y.
show work
Solved
Show answers
More tips
- A Art and Culture How to Learn Screaming: Step-by-Step Guide for Beginners...
- H Health and Medicine Contraceptive Pills After 35: The Importance Of Choosing The Right Medication...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- C Computers and Internet How to Learn to Type Fast?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
Answers on questions: Mathematics
- M Mathematics Helps ASAP Which expression CANNOT be used to calculate the sale price of a fish tank that was originally priced at d dollars and is on sale for 25% off? Select all that apply....
- M Mathematics A 14-foot ladder is leaning against the wall. The base of the ladder is 5 feet from the wall. Approximately how high on the wall, in feet, does the ladder reach?...
- M Mathematics 1. A partir de la siguiente información, determine la producción o ingreso de equilibrio y el valor del multiplicador de la inversión: C = 0.6 Y + 150; I = 100; G = 120; Tr...
- C Chemistry A molecule, Z, contains two atoms of oxygen, six atoms of hydrogen and three atoms of carbon. What is the formula of Z?...
- W World Languages Conjunção coordenativa copulativa...
- S Social Studies A person who is said to have a steadfast adherence to a strict moral or ethical code is considered to have ....
Ответ:
Step-by-step explanation:
b. The particualar steps for solving a linear equation such as this may vary from one equation to another. In general, you want to put all the y-terms on one side of the equal sign and everything else on the other side. Here's how we'll do that in this case.
Use the distributive property to eliminate parentheses.
... 6x -3y +12 = 4x -3
Find the unwanted terms on the side of the equation where y is, then add their opposite. In this case, we're adding -(6x+12)
... -3y = (4x -3) -(6x +12) = -2x -15
Divide by the coefficient of y.
... y = -2x/(-3) -15/(-3)
... y = 2/3x +5
c. This is a 2nd-degree (quadratic) equation with y as its only variable. The factor (2y+1) appears in both terms so we can use the distributive property to factor it out. Then the equation becomes ...
... (y +3)(2y +1) = 0
The zero product rule tells us this product will be zero only when one or the other of the factors is zero. This fact helps us find the values of y that are the solution to the equation.
For y+3 = 0:
... y + 3 = 0
... y = -3 . . . . . . add -3 to both sides of the equation
For 2y +1 = 0:
... 2y +1 = 0
... y +1/2 = 0 . . . . divide by 2
... y = -1/2 . . . . . . add -1/2
The solutions are y = -3 or y = -1/2.
Ответ: