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fgiga [73]
3 years ago
9

If 7x+2=5x, what is the value of -x?

Mathematics
2 answers:
yaroslaw [1]3 years ago
4 0
The value of x is -1.
7x+2=5x
2=-2x
-1=x
fomenos3 years ago
3 0

Answer:

x = -1

Step-by-step explanation:

We must solve 7x+2=5x for x.  To do this, subtract 5x from both sides:

2x + 2 = 0, or

2x = -2, or

x = -1

The solution is x = -1.

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You are given f(x)=-5x2+10x-5
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Answer:

B

Step-by-step explanation:

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A deck of cards contains RED cards numbered 1,2,3,4,5, BLUE cards numbered 1,2,3, and GREEN cards numbered 1,2,3,4,5,6. If a sin
Tatiana [17]

Answer: 1/52

Step-by-step explanation:

A deck of cards contains 52 cards

Red cards are numbered 1,2,3

Blue cards are numbered 1,2,3,4,5,6

Green cards are numbered 1,2

Number of Red card = 3

Number of blue card = 6

Number of Green card = 2

Let Pr(R) = Probability of picking a Red card

Let Pr(B) = probability of picking a blue card

Let Pr(G) = probability of picking a green card

Let Pr(RE) = Probability of picking a red even card

Let Pr(RO) = probability of picking a red odd card

Let Pr(BE) =probability of picking a blue even card

Let Pr(BO) = probability of picking a blue odd card

Let Pr(GE) = probability of picking a green even card

Let Pr(GO) = probability of picking a green odd card

Pr(R) = 3/52

Since we have 3 red cards,

Pr(RE) = 1/3

Pr(RO) =2/3

Pr(B) = 6/52

= 3/26

Since we have 6 blue cards ,

Pr(BE) = 3/6

= 1/2

Pr(BO) = 3/6

= 1/2

Pr (G) = 2/52

= 1/26

Since we have 2 green cards,

Pr(GE) = 1/2

Pr(GO) = 1/2

The probability of picking a Green card and an odd green card is

Pr(G) n pr(GO)

1/26 * 1/2

= 1/52

5 0
3 years ago
Simplify this expression: 4p + 9 + (–7p) + 2        A. 3p + 11  B. 11p + 11  C. –3p + 11  D. 3p + 7
lutik1710 [3]
4p - 7p + 9 + 2
= -3p + 11
=C
8 0
3 years ago
Read 2 more answers
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