![bree9362](/avatars/18071.jpg)
bree9362
22.07.2019 •
Mathematics
1. solve the system using substitution (1 point) x + y = 8 y = 3x (a). (4, 12) (b). (2, 6) (c). (1/2, 3/2) (d). (-4, -12) 2. solve the system using substitution (1 point) 2x + 2y = 38 y = x + 3 (a). (8, 11) (b). (4, 7) (c). (35/4, 47/4) (d). (-4, -7) 3. solve the system using substitution (1 point) y = 8 - x 7 = 2 - y (a). (5, 13) (b). (13, -5) (c). (3, 5) (d). (21, -13) 4. solve the system using substitution (1 point) 3x + 2y = 23 1/2x - 4 = y (a). (9, -2) (b). (27/4, -5/8) (c). (31/4, -1/8) (d). (3/2, -13/4) 5. solve the system using substitution (1 point) y - 2x = 3 3x - 2y = 5 (a). (-1/2, 2) (b). (2, 7) (c). (-8, -13) (d). (-11, -19) unit 7 lesson 2, solving systems using substitution. if you completed this algebra lesson yet give me the rest of the : )
Solved
Show answers
More tips
- S Style and Beauty How Are Eyelash Extensions Applied? All Your Questions Answered...
- F Family and Home Tender Care for Your Parquet: Is it Possible to Clean Parquet?...
- S Society and Politics Is It Fact or Fiction? Let s Talk About Anton Chekhov s Pseudonym...
- S Sport Playing Bowling: Rules and Advice for Novices...
- C Computers and Internet How to Properly Repartition a Hard Drive?...
- A Auto and Moto What Is the Cost of Customs Clearance for a Car in Russia?...
- L Leisure and Entertainment Should You Buy a Ceramic Knife?...
- C Computers and Internet How to easily and quickly disable Firebug in Gmail and Google Docs...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
Answers on questions: Mathematics
- M Mathematics Mr. Euryspthee class is making pillow cases. Each pillow case uses 0.75 of a yard of fabric. How many pillow cases can he make out of 13.5 yards of fabric?...
- M Mathematics PLEASE PLEASE HELP 1. What is the domain of the function shown below?...
- M Mathematics Pls help on these and pls and thku...
- M Mathematics Which are partial products for 68 x 43...
- C Chemistry What does speed of a wave depend on...
Ответ:
1.
y = 3x, let's input that into the other equation.
x + 3x = 8
4x = 8
Divide both sides by 4.
x = 2
y = 3(2)
y = 6
(2, 6)
2.
y = x + 3, let's input that into the other equation.
2x + 2(x + 3) = 38
2x + 2x + 6 = 38
Subtract 6 from both sides.
4x = 32
Divide both sides by 4.
x = 8
y = 8 + 3
y = 11
(8, 11)
Good luck!
Ответ:
(12,5) (3, -9) (3,14) (-6,5)