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
attashe74 [19]
3 years ago
6

Factor 2x4 - 20x2 - 78.

Mathematics
2 answers:
Komok [63]3 years ago
8 0

Answer:

2(x² + 3)(x² - 13)

Step-by-step explanation:

2x⁴ - 20x² - 78

Factor out 2.

2(x⁴ - 10x² - 39)

Find 2 numbers that multiply to get -39 and add to get -10. Those numbers are -13 and 3.

2(x⁴ - 13x² + 3x² - 39)

2(x² + 3)(x² - 13)

Airida [17]3 years ago
7 0

Answer:

2x⁴ - 20x² - 78

To factor the expression look for the LCM of the numbers

LCM of the numbers is 2

Factorize that one out

That's

2( x⁴ - 10x² - 39)

Hope this helps

You might be interested in
Help me please :).........
VikaD [51]
C I believe it not so sure
5 0
4 years ago
5. A ball is thrown upward with an initial velocity of 50 feet per second. The
dangina [55]

Answer:

SEE BELOW IN BOLD.

Step-by-step explanation:

a.

h = -16t^2 + 50t

h = 20 t

When the height is the same:

-16t^2 + 50t = 20t

-16t^2  + 30t = 0

t(-16t + 30) = 0

t = 0 or  -16t + 30 = 0, so:

t = 0 or -30/-16 = 1.875

So the answer is 1.88 seconds to the nearest hundredth.

b.

For the ball

h = -16t^2 + 50t

Finding the derivative and equating to zero:

dh/dt = -32t + 50 = 0

t = -50/-32 = 1.563

Maximum height after 1.56 seconds to nearest hundredth

c.

When the ball hits the ground h = 0 so

-16t^2 + 50t = 0

-16t(t - 50/16)= 0

T = 3.13 SECONDS TO THE NEAREST HUNDERDTH

7 0
2 years ago
Ms. Gonzalez borrowed $4,500 from her bank to buy a jet ski. The loan has an 8.5% annual simple interest rate. If it takes Ms. G
Komok [63]

Answer:

765

Step-by-step explanation:

4500x8,5= 38250/100=382,5 x2= 765

4 0
3 years ago
Please help this is so confusing
AURORKA [14]

Answer:

Triangle #2

Step-by-step explanation:

Translation involves the movement of a triangle without changing its direction or shape. It basically involves the sliding of a triangle, so Triangle 2 satisfies the definition of translation.

6 0
3 years ago
Maxine has a poster of her favorite ascertaining in her bedroom. The poster is 2.5 feet tall and 1.3 feet wide.what is the area
Archy [21]

Answer:

3.25 ft

Step-by-step explanation:

A = bh

A = (2.5)(1.3)

A = 3.25

4 0
3 years ago
Read 2 more answers
Other questions:
  • When might you think you’re built upside down
    6·1 answer
  • amanda, lisa, and raquel together sold 54 tickets for the school play. amanda sold 22 tickets and lisa sold 14 tickets. how many
    15·2 answers
  • How far does the tip of the minute hand of a clock move in 1 hour and 27 minutes if the hand is 2 inches long?
    15·1 answer
  • Rename the number 4 thousand 7 hundreds
    15·2 answers
  • Would a patient be receiving more medication if his dosage is decreased by 50 milligrams or if it is decreased by 25 milligrams?
    11·1 answer
  • If sin (7y) = cos (5y + 14), find y.
    6·1 answer
  • 6.52<br>65.2<br>0.652<br>order it least to greatest which comes first?​
    15·2 answers
  • 140, 90, 85, 220, 99, 180, 205<br>Mean:<br>Median:<br>Mode:<br>Range:​
    14·1 answer
  • What is the value of x in the equation below?<br> (12x– 24) = 16<br> o<br> оооо<br> =
    11·2 answers
  • Favorite country singer also free.points​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!