28x-4 what is it factored

2 answers:

5 0

To factor 28x-4, find the LCD
(find the number that can equal to both 28 and -4)

In this case, it would be 4. So, you factor out 4 from the equation

and it would look like 4* (7x-1)

You can not simplify it any more so the answer would be 4(7x-1)

igor_vitrenko [27]3 years ago

3 0

4(7x-1) this is how its factored :)

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A local high school has 1250 students in grades 9 through 12. Twenty-eight percent of the students in the school are in the nint

dsp73

Answer:175

Step-by-step explanation:

1. Turn 28% into a decima: 0.28

2. Multiply 1250 by 0.28 to get the amount of ninth grade students:350

3. Half the amount of ninth grade students:175

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atroni [7]

his income must be "x" which is the 100%, and we would know that 0.2% of that is 12.37.

$\begin{array}{ccll} amount&\%\\ \cline{1-2} x&100\\ 12.37&0.2 \end{array}\implies \cfrac{x}{12.37}=\cfrac{100}{0.2}\implies 0.2x=1237 \\\\\\ x=\cfrac{1237}{0.2}\implies x=61.85$

his income must be "x" which is the 100%, and we would know that 2% of that is 12.37.

$\begin{array}{ccll} amount&\%\\ \cline{1-2} x&100\\ 12.37&2 \end{array}\implies \cfrac{x}{12.37}=\cfrac{100}{2}\implies 2x=1237 \\\\\\ x=\cfrac{1237}{2}\implies x=618.5$