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ira [324]
3 years ago
8

6-7(x+1)= -3(2-x) How do you solve this?

Mathematics
1 answer:
kicyunya [14]3 years ago
7 0
<h3><u>Explanation</u></h3>
  • Given the equation.

6 - 7(x + 1) =  - 3(2 - x)

  • Distribute/Simplify

6 - 7x - 7 =  - 6 + 3x \\  - 1 - 7x =  - 6 + 3x

  • Solve the equation for x-term by making x as the subject.

- 1 + 6 = 7x + 3x \\ 5 = 10x \\  \frac{5}{10}  = x \\  \frac{1}{2}  = x

  • Answer Check by substituting the value of x in the equation.

6 - 7( \frac{1}{2} ) - 7 =  - 6 + 3( \frac{1}{2} ) \\ 6 -  \frac{7}{2}  - 7 =  - 6 +  \frac{3}{2}  \Longrightarrow \sf{You \:  \: can \:  \: change \:  \: sides \:   \: to \:  \: make \:  \: it \:  \: easier} \\ 6 - 7 + 6 =  \frac{7}{2}  +  \frac{3}{2}  \\ 5 =  \frac{10}{2}  \\ 5 = 5 \:  \green{ \checkmark}

The equation is true for x = 1/2.

<h3><u>Answer</u></h3>

<u>\large \boxed{x =  \frac{1}{2} }  \:  \:  \:  \: \green{ \checkmark}</u>

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Harry had $32. He spent all the money on buying 3 notebooks for $x each and 4 packs of index cards for $y each. If Harry had bou
sattari [20]

Answer:

  a. The student's conclusion is incorrect because the solution to the system of equations 3x + 4y = 32 and 5x + 5y = 50 is (8, 2).

Step-by-step explanation:

The second equation needs to be ...

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because the wording "short of $18" means that the actual cost of that purchase would be $18 more than the $32 that Harry had. 18+32 = 50.

The only answer choice that shows this as the second equation is choice A.

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In fact, the solution to the system of equations is (8, 2), as can be seen in the graph below.

4 0
4 years ago
Plz answer seriously and you will get 15 points and possibly a brainliest.
irina1246 [14]

Just saying, this angle is a 45 degree angle.  

and the X on both is   '-1'

I think?

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8 0
3 years ago
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n200080 [17]

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Step-by-step explanation:

4 0
3 years ago
A Grocery store offers a cheese sampler that includes a pepper cheddar cheese that cost $15 per kilogram and Pennsylvania jack t
Len [333]

Answer:

1.5 kg of pepper cheddar cheese and 4.5 kg of Pennsylvania jack was used in the mixture.  

Step-by-step explanation:

Pepper Cheddar cheese  = $15 per kilogram

Pennsylvania jack = $11 per kilogram

The cheese sampler includes a  Pepper Cheddar cheese and a Pennsylvania jack that cost $15 per kilogram and $11 per kilogram respectively.

The mixture = 6 kg

Let

a = kg of the pepper cheddar cheese

b = kg of the Pennsylvania jack

a + b = 6............(i)

Rate

15a + 11b/6 = 12

15a + 11b = 72.............(ii)

Combine the equation

a + b = 6............(i)

15a + 11b = 72.............(ii)

a = 6 - b

15(6 - b) + 11b = 72

90 - 15b + 11b = 72

90 - 72 = 15b - 11b

18  = 4b

divide both sides by 4

b = 18/4

b = 4.5 kg

insert the value of b in equation (i)

a + b = 6............(i)

a = 6 - 4.5

a = 1.5 kg  

1.5 kg of pepper cheddar cheese and 4.5 kg of Pennsylvania jack was used in the mixture.  

4 0
3 years ago
4 Write an inequality for the word phrase<br> -5 is fewer than 6 less than a numberk
olchik [2.2K]

Answer:

6 - 5 < X

Is your expression

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3 years ago
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