Question

HELP PLEASE AND FAST!

1) Which expression forms an equation with the given expression?

24 – 5 • 2 = ___________???


A.

(5 + 3) • 2


B.

2(6 + 1)


C.

5 • 8 – 2


D.

4 • 9 + 2
_____________
2) Which expression forms an equation with the given expression?

6 • 5 + 18 ÷ 3 = ___________???

A.

(4 • 12 ÷ 2) + 10


B.

2 • 11 + (2 + 12)


C.

4 + 5 • 10 – 8


D.

(9 + 4) • 4 – 6
___________
3)
What statement makes the open sentence 3x + 9 = 24 true?

A.

x = 3


B.

x = 5


C.

x = 11


D.

x = 15
________
4) What statement makes the open sentence 7x – 7 = 2x + 8 true?

A.

x = 0


B.

x = 1


C.

x = 3


D.

x = 4
________
5) What statement makes the open sentence 2.4 = 6x true?
A.

x = 4.0


B.

x = 2.5


C.

x = 0.4


D.

x = 0.2

Answer 1

1. is B beacuse if you do 24 – 5 • 2 first you do 5x2 you get 10 then you subtract 24-10 and get 14 B is the right answer because 2(6 + 1) you do 6+1= 7 then you times it by 2 and get 14. hope you like my answer

Answer 2

1) Option B

2) Option B

3) Option B

4) Option C

5) Option C

Explanation:

1) To find : Which expression forms an equation with the given expression?

Solution :

Expression
`24-5\cdot 2`

We solve it and solve the options which matches is the required expression.

`24-5\cdot 2=24-10=14`

A)
`(5+3)\cdot 2=8+2=10` Not true

B)
`2(6+1)=2(7)=14` True

C)
`5\cdot 8-2=40-2=38` Not true

D)
`4\cdot 9+2=36+2=38` Not true

Therefore, Option B is correct.

2) To find : Which expression forms an equation with the given expression?

Solution :

Expression
`6\cdot 5+18/ 3`

We solve it and solve the options which matches is the required expression.

`6\cdot 5+18/ 3=30+6=36`

A)
`(4\cdot 12/ 2)+10=24+2=28` Not true

B)
`2\cdot 11+(2+12)=22+14=36` True

C)
`4+5\cdot 10-8=4+50-8=46` Not true

D)
`(9+4)\cdot 4- 6=13\cdot 4-6=46` Not true

Therefore, Option B is correct.

3) To find : What statement makes the open sentence
`3x + 9 = 24` true?

Solution :

Expression
`3x + 9 = 24`

We substitute the options which satisfy is the required expression.

A) x=3

`3(3)+9 = 24`

`18\\eq 24`

Not true.

B) x=5

`3(5)+9 = 24`

`24=24`

True.

C) x=11

`3(11)+9 = 24`

`42\\eq 24`

Not true.

D) x=15

`3(15)+9 = 24`

`54\\eq 24`

Not true.

Therefore, Option B is correct.

4) To find : What statement makes the open sentence
`7x-7=2x+8` true?

Solution :

Expression
`7x-7=2x+8`

We substitute the options which satisfy is the required expression.

A) x=0

`7(0)-7=2(0)+8`

`-7\\eq 8`

Not true.

B) x=1

`7(1)-7=2(1)+8`

`0\\eq 10`

Not true.

C) x=3

`7(3)-7=2(3)+8`

`14= 14`

True.

D) x=4

`7(4)-7=2(4)+8`

`21\\eq 16`

Not true.

Therefore, Option C is correct.

5) To find : What statement makes the open sentence
`2.4=6x` true?

Solution :

Expression
`2.4=6x`

We substitute the options which satisfy is the required expression.

A) x=4.0

`2.4=6(4)`

`2.4\\eq 24`

Not true.

B) x=2.5

`2.4=6(2.5)`

`2.4\\eq15`

Not true.

C) x=0.4

`2.4=6(0.4)`

`2.4=2.4`

True.

D) x=0.2

`2.4=6(0.2)`

`2.4\\eq 1.2`

Not true.

Therefore, Option C is correct.