Math help plz?

Question

State whether the equation is true, false, or an open sentence.

1. 4 + 15 = 27 - 8

a.true

b.false

c.open sentence

2. -30 = 9w

a.true

b.false

c.open sentence

3. |9 – 10| = 8 – 9

a.true

b.false

c.open sentence

Solve each equation or inequality.

4. y – 3 = -7

5. x + 4 = 8

6. 7t = 42

7. m ÷ 8 = -4

8. - 90 = 10f

9. 9 < 3 + a

a.a> 12

b.a < 12

c.a < 6

d.a > 6

10. r – 12 < 7

a.r < -5

b.r > -5

c.r > 19

d.r < 19

11. m + 15 > -4

a.m > 11

b.m < 11

c.m > -19

d.m < -19

12. You have some quarters, dimes, and pennies -- eight coins worth $.77 altogether. How many of each type of coin do you have?

a.2 quarters, 2 dimes, 7 pennies

b.1 quarter, 5 dimes, 2 pennies

c.0 quarters, 7 dimes, 7 pennies

d.3 quarters, 0 dimes, 2 pennies

Answer 1

1- a

2- c

3- b

4- 4

5- 4

6- 7

7- 2

8- 9

9- d

10- a

11- b

12- b

Answer 2

i was told to answer c for any questions you don&#039;t know and chances are you would pass.  Don&#039;t know if I would try that though. :D

Answer 3

1. true

2. open sentence

3. false

4. y - 3 = -7

(Add three to both sides, which gets you to y= -5)

5. x + 4 = 8

(subtract four from both sides, which gets you x = 4)

6. 7t = 42

(divide both sides by seven, wich gives you t =6)

that got you started,,,,, now do your own homework!

Answer 4

1. a

2.b

3.a

4.-4

5.4

6.6

7.-32

8.-9

9. b

10.b

11. b

12. b

Answer 5

1-11 true or flase 12.open ened

Answer 6

Looks like your homework!  Open up the book, and READ it.

You can&#039;t go through life leaning on others... (Unless you plan on going into politics!)

Answer 7

1.a

2.c

3.b

4.-4

5.4

6.6

7.-32

8.100+

9.A

10.d

11.A

12.B

Answer 8

1.a

2.c

3.b

4.  -4

5.   4

6.   6

7.  -32

8.  -9

9.d

10. a

11. a

12.b