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sergejj [24]
3 years ago
10

For each expression, select Yes or No to indicate whether the expression could be used to represent a 30% discount. Let x repres

ent the original amount.
a. x - 0.7


b. 0.3(x-1)


c. 0.7x


d. x - (0.3x)
Mathematics
2 answers:
Degger [83]3 years ago
7 0

Answer: a

Step-by-step explanation:

Lerok [7]3 years ago
7 0
It’s d 0.3(x-1) hope it helped
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Simplify: 4 - (3 + 1)2 - 6 ÷ 2 + 4 Combine like terms: 7x3 + 2x - 5x2 + 6 + x + 9 + 3x3 + 12x2 Simplify: (2x5 - 3x2 + 4) - (x5 +
Svetach [21]

Answer:

Step-by-step explanation:

4-(3+1)^2-6/2+4

4-4^2-3+4

4-16-3+4

-12-3+4

-15+4

-11

-------------------------

7x^3+2x-5x^2+6+x+9+3x^3+12x^2

10x^3-5x^2+12x^2+2x+x+6+9

10x^3+7x^2+3x+15

-------------------------------

3x^2(4x^3-2x^2+7x-4)

12x^5-6x^4+21x^3-12x^2

--------------------------------------

6x^2+9x-7 when x=2

6(2)^2+9(2)-7

6(4)+18-7

24+18-7

42-7

35

------------------------------

3(x-y)^2+4y-6x+2

3(-1-3)^2+4(3)-6(-1)+2

3(-4)^2+12+6+2

3(16)+12+8

48+12+8

68

------------------------------

7x-5=23

7x=23+5

7x=28

x=28/7

x=4

---------------

7y-4+3y+6=9y+8

10y-4+6=9y+8

10y-9y+2=8

y+2=8

y=8-2=6

y=6

--------------------------

5(w-2)+6=3w-14

5w-10+6=3w-14

5w-4=3w-14

5w-3w-4=-14

2w-4=-14

2w=-14+4

2w=-10

w=-10/2

w=-5

----------------------

-4x+2<2x-6

-4x-2x+2<-6

-6x+2<-6

-6x<-6-2

-6x<-8

6x<8

x<8/6

x<4/3

x>4/3

8 0
3 years ago
Read 2 more answers
Evaluate 3x+2 for x=2
mafiozo [28]

Answer:

8

Step-by-step explanation:

3(2)+2

6+2

8

7 0
4 years ago
Read 2 more answers
Please help me with this it was due 3 days ago
professor190 [17]
Some things to know
point slope form: for a line passing through (x1,y1) and the slope is m
y-y1=m(x-x1)

horizontal lines are y=constant

y=mx+b, m is slope and b is y intercept

the slope of the line that passes through the points (x1,y1) and (x2,y2) is
(y2-y1)/(x2-x1)

1.
y-2=2/3(x-(-3))
y-2=2/3(x+3)

2.
find slope
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a point isi (-4,3) and slope is -1/2
y-3=-1/2(x-(-4))
y-3=-1/2(x+4)

3.
yintercept of 2 means (0,2) is a point
find slope between (0,2) and (12,4)
(4-2)/(12-0)=2/12=1/6
a point is (12,4)
y-4=1/6(x-12)

4.
horizontal is y=something
(x,y)
(-2,-9)
we have y=-9
y=-9 is the equaiton

5.
y=-2x+3
y=mx+b
-2 is slope
a point is (-6,2)
y-2=-2(x-(-6))
y-2=-2(x+6)
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You work at a restaurant. Some times are busier than others, and your
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It should be A Draw a diagram
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1,496 is the answer because you just multiply them all together
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