1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nekit [7.7K]
3 years ago
9

Factor this polynomial 6x^2 + 19x – 7.

Mathematics
1 answer:
kondaur [170]3 years ago
8 0

Answer:

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

You might be interested in
What’s the surface area
Elodia [21]
The answer would be 202 inches
7 0
3 years ago
How much pure acid should be mixed with 6 gallons of a 20% acid solution in order to get a 90% acid solution?
beks73 [17]
So, how much acid is there in 6 gallons?  well is 20% acid or (20/100), so the amount of acid in it just (20/100) * 6 or 1.2, the rest is say water.

now, if we want a 90% solution, and say we add "y" gallons, how much acid is in it?  well (90/100) * y, or 0.9y.

now let's add "x" gallons of pure acid, now, pure acid is just pure acid, so is 100% acid, how much acid is there in it?  (100/100) * x, or 1x or just x.

we know whatever "x" and "y" amounts are, they -> x + 6 = y

and we also know that x + 1.2 = 0.9y

\bf \begin{array}{lccclll}
&\stackrel{gallons}{acid}&\stackrel{acid~\%}{quantity}&\stackrel{acid~gallons}{quantity}\\
&------&------&------\\
\textit{pure acid}&x&1.00&x\\
\textit{20\% sol'n}&6&0.20&1.2\\
------&------&------&------\\\
mixture&y&0.90&0.9y
\end{array}
\\\\\\
\begin{cases}
x+6=\boxed{y}\\
x+1.2=0.9y\\
----------\\
x+1.2=0.9\left( \boxed{x+6} \right)
\end{cases}
\\\\\\
x+1.2=0.9x+5.4\implies x-0.9x=5.4-1.2\implies 0.1x=4.2
\\\\\\
x=\cfrac{4.2}{0.1}\implies x=\stackrel{gallons}{42}
3 0
3 years ago
The diagonals of square ABCD intersect at point E. If BE = 2x + 1, and AC = 3(6x - 4), find BD.
Butoxors [25]

Answer:

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Do tessellations have to be polygons?
den301095 [7]
Its the last one, the shapes but be polygons.
8 0
3 years ago
PLEASE HELP SOLVE I WILL MARK AS BRAINLESS!<br>​
AlexFokin [52]

Answer:

See below

Step-by-step explanation:

13) \: no \: of \: people = 2 \div  \frac{1}{8}  \\  = 2 \times  \frac{8}{1}   \\  = 16 \\  \\ 14) \: no \: of \: prizes \: won \: by\:Mallory \\  =  \frac{2}{ \cancel3}  \times  \cancel6 \\   = 2 \times 2 \\  = 4 \\  \\ 15) \: no \: of \: quart \: diced \: tomatoes \\  = 5 \frac{1}{4}  \times 1 \frac{2}{3}  \\  \\  =  \frac{ \cancel{21}}{4}  \times  \frac{5}{ \cancel3}  \\  \\  =  \frac{7}{4}  \times 5 \\  \\  =  \frac{35}{4}  \\  \\  = 8 \frac{3}{4}  \\  \\ 16) \: no \: of \: blocks = 123 \frac{1}{2}  \div 6 \frac{1}{2}  \\  \\  =  \frac{247}{2}   \div  \frac{13}{2}  \\  \\  =  \frac{247}{2}  \times  \frac{2}{13}  \\  \\  \frac{247}{13}  \\  \\  = 19

3 0
3 years ago
Other questions:
  • Multiply: (-22)(38)
    13·2 answers
  • What is 6,174,798,604 in scientific notation.
    8·1 answer
  • 6.013 divided by 3.008
    7·1 answer
  • a wild tiger can eat up to 55 pounds of meat in a day about how many days would it take for a tiger to eat the following prey an
    11·1 answer
  • A local grocery store is advertising a discount of 20% off a large bag of peaches, which normally costs $5.
    9·2 answers
  • HELP ASAP Solve for x. Show or explain your work.
    7·1 answer
  • 2x+4=12 helppppppppppppppp​
    7·2 answers
  • Need this very badly ​
    14·1 answer
  • I want someone please who are really good in algebra so he/she can stays with me while my quiz just 5 min please help meee!!!!!!
    11·1 answer
  • Hmmmmmmmmmmmmmmmmmmmmmmmmmmm
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!