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aksik [14]
3 years ago
7

How do I solve for x? -3x+7=1

Mathematics
2 answers:
Andre45 [30]3 years ago
8 0

Answer:

x=8/-3 or 2.6

Step-by-step explanation:

You have to isolate the "x" so move the +7 to the other side of the equation and you get this:

-3x=1+7

Now you can simplify and add 7 plus 1 which is 8

the equation should looks like this now:

-3x=8

Then to have x by itself you divide -3 on both sides.

-3 divided by -3x just leaves the x there and -3 divided by 8 is just 8/-3 or in decimal form it's 2.6

-3x/-3= x

8/-3= 8/-3 or 2.6

x= 8/-3

I'm not really good at explaining but I hope it helped :/

inna [77]3 years ago
4 0

Answer:

x=2

Step-by-step explanation:

              -3x+7=1

subtract 7 from both sides: -3x+7-7=1-7

simplify: -3x=-6

divide both sides by -3:  \frac{-3x}{-3}=\frac{-6}{-3}

simplify: x=2

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What is the mean of the data set? {32, 33, 34, 34, 36, 38, 38, 38, 40, 42}
Sphinxa [80]
Add all the numbers:

32 + 33  34 + 34 + 36 + 38 + 38 + 38 + 40 + 42 = 365

There are 10 numbers.

Divide:
Total by how many numbers there are

Total = 365
Numbers = 10

365 / 10 = 36.5

The mean is 36.5

Hope this helped☺☺


7 0
3 years ago
Read 2 more answers
PLEASE ANSWER THIS ASAP !!!!!!
MrRissso [65]

Answer:

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Step-by-step explanation:

The equation of a line passing through the origin is

y = mx ( m is the slope )

Calculate m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 2, 2) and (x₂, y₂ ) = (2, - 2) ← 2 points on the line

m = \frac{-2=2}{2+2} = \frac{-4}{4} = - 1 , thus

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5 0
3 years ago
The radius of a. circular garden is 15 feet. About how much fencing will be needed to enclose the garden?
WINSTONCH [101]

Answer:

94.2 ft of fencing

Step-by-step explanation:

To answer this, find the circumference, C, of the garden, using the circumference formula C = 2(pi)r.

Here, with r = 15 ft, we get C = 2(3.14)(15 ft) = 94.2 ft of fencing will enclose this garden.

8 0
3 years ago
Someone plz help on # 15 (idk what to do) :/
aleksklad [387]

Answer:

2x-5= -20

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2x-5+5= -20+5

2x= -15

divide by 2 for both sides

2x/2= -15/2

cross out 2 and 2, divide by 2 and 2 and then becomes x

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4 0
4 years ago
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s344n2d4d5 [400]

Answer:

It's a simultaneous equation because it as two solution

Step-by-step explanation:

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4 years ago
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