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omeli [17]
2 years ago
10

-4(x-1)=-3x+13-9-x PLS SOLVE IT STEP BY STEP

Mathematics
2 answers:
Karolina [17]2 years ago
8 0

Answer:

x can be any real number.

Step-by-step explanation:

- 4 (x - 1) = - 3x + 13 - 9 - x

The easiest approach to solving this problem is to simplify each side. Start by focusing on the left side, distribute the term outside of the parenthesis, multiply every term inside the parenthsis by the term outside of it,

- 4 ( x - 1 ) = - 3x + 13 - 9 - x

Distribute,

(-4)(x) + (-4)(-1) = - 3x + 13 - 9 - x

Simplify,

-4x + 4 = - 3x + 13 - 9 - x

Simplify the right side of the equation, combine like terms,

-4x + 4 = - 3x + 13 - 9 - x

Rearrage,

-4x + 4 = -3x - x + 13 - 9

Simplify,

-4x + 4 = -4x + 4

At this point, one should use inverse operations to solve the problem, but the given equation is an identity, meaning that any real value can be substituted into the parameter (x), and the equation will yield a true result. Thus, (x) equals all real numbers.

krek1111 [17]2 years ago
4 0
-4(x-1)=-3x+13-9-x
-4x+4=-3x+4-x
-4x+4=-4x+4
-4x=-4x
0=0
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A textbook store sold a combined total of 260 chemistry and physics textbooks in a week. The number of chemistry books sold was
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Let:

x = Chemistry textbooks sold

y = Physics textbooks sold

The textbook store sold a combined total of 260, so:

x+y=260

The number of chemistry books sold was three times the number of physics textbooks sold, so:

x=3y

Let:

\begin{gathered} x+y=260_{\text{ }}(1) \\ x=3y_{\text{ }}(2) \end{gathered}

Replace (2) into (1):

\begin{gathered} 3y+y=260 \\ 4y=260 \\ y=\frac{260}{4} \\ y=65 \end{gathered}

Replace the value of y into (2):

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5 0
1 year ago
A car valued at £18000 at the start of 2017, depreciated in value by 5% each year for 3 years. How much did it lose in value ove
Anna11 [10]

<u>Answer:</u>

The amount lost over the 3 years s 2567.25£  

<u>Explanation:</u>

$\mathrm{F}=\mathrm{I} \times\left(1-\left(\frac{r}{100}\right)\right)^{\mathrm{n}}$

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Since the value is depreciated 5% every year for 3 years,

r = percentage rate of depreciation = 5% (given)

n = 3 years

Substituting these values in formula, we get

$\mathrm{F}=18000 \times\left(1-\frac{5}{100}\right)^{3}$

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Finally 18000-15432.75 = 2567.25£ is the amount lost over this period.  

6 0
3 years ago
Perform the indicated operation: (x 2 -5x+2)+( x 2 +4x+5)-( x 2 -6x-42)
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2 years ago
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Answer:

a. distribution is uniform

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Given that  a sample of 150 were asked whether or notthey supported capital punishment.

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we prepare contingency tab

Expected = 50 50 50

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3 0
3 years ago
What percentage is shown in the picture?
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Total strips = 8
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