8x^2-18x-5 Help please

Mathematics

2 answers:

uysha [10]3 years ago

8 0

Answer:

9.2

Step-by-step explanation:

8x^2-18x-5

64x-18x-5

46x=5

9.2

mark brainliest please

MakcuM [25]3 years ago

4 0

Answer:

(4x + 1)(2x - 5)

Step-by-step explanation:

To factor 8x² - 18x - 5

Consider the factors of the product of the x² term and the constant term which sum to give the coefficient of the x- term.

product = 8 × - 5 = - 40, sum = - 18

The factors are + 2 and - 20

Use these factors to split the x- term, that is

8x² + 2x - 20x - 5 ( factor the first/second and third/fourth terms )

= 2x(4x + 1) - 5(4x + 1) ← factor out (4x + 1)

= (4x + 1)(2x - 5) ← in factored form

You might be interested in

I have 60 coins, 30% are pennies, how many coins is not pennies

Digiron [165]

60 coins
30%=pennies
100-30=70% =not pennies
percent menas parts out of 100 so
70%=70/100=7/20=0.7
so we want to find 70% of 60
'of' can be translated to as multiply
0.7 times 60=42
42 coins=not pennies

8 0

3 years ago

Read 2 more answers

Why does the equation 35-5x+6x-36=-24-17x+17x+24 have one solution

seropon [69]

If it has only one solution that means that there is only one value of x that will fulfill this equation
35 - 5x + 6x - 36 = -24 - 17x + 17x + 24
-5x + 6x - 36 = -24 -17x + 17x + 24 - 35
x - 36 = -24 + 24 - 35 (I just canceled out the 17x because it would have justy made the process longer if I moved them over)
x = -24 + 24 - 35 + 36
x = -35 + 36
x = 1

3 0

3 years ago

Read 2 more answers

For each state in the table,find the number of square miles that are covered by forest.

Oksanka [162]

lemme do only California, so you see how's done.

$\bf \begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\stackrel{California}{\textit{14\% of 158609}}}{\left( \cfrac{14}{100} \right)158609}\implies 22205.26$