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
aleksklad [387]
3 years ago
8

Simplify 6z^-7 (2) x² (4) ^4x^-4​

Mathematics
2 answers:
Pachacha [2.7K]3 years ago
8 0

Step-by-step explanation:

First, subtract  

7

from each side of the equation to put the equation in standard form:

x

2

+

4

x

+

4

−

7

=

7

−

7

x

2

+

4

x

−

3

=

0

We can now use the quadratic formula to find the solutions for  

x

. The quadratic formula states:

For  

a

x

2

+

b

x

+

c

=

0

, the values of  

x

which are the solutions to the equation are given by:

x

=

−

b

±

√

b

2

−

(

4

a

c

)

2

⋅

a

Substituting:

1

for  

a

4

for  

b

−

3

for  

c

gives:

x

=

−

4

±

√

4

2

−

(

4

⋅

1

⋅

−

3

)

2

⋅

1

x

=

−

4

±

√

16

−

(

−

12

)

2

x

=

−

4

±

√

16

+

12

2

x

=

−

4

±

√

28

2

x

=

−

4

±

√

4

⋅

7

2

x

=

−

4

±

√

4

√

7

2

x

=

−

4

±

2

√

7

2

x

=

−

4

2

±

2

√

7

2

x

=

−

2

±

√

7

Or

x

=

−

2

+

√

7

and  

x

=

−

2

−

√

7

Mademuasel [1]3 years ago
6 0

Answer:

3

Step-by-step explanation:

You might be interested in
:
Degger [83]

Let x = pounds of $12 per pound coffee

then

20-x = pounds of $9 per pound coffee

.

12x + 9(20-x) = 10(20)

12x + 180 - 9x = 200

3x + 180 = 200

3x = 20

x = 20/3

x = 6 and 2/3 pounds of $12 per pound coffee

.

Amount of $9 per pound coffee:

20-x = 20-20/3 = 60/3 - 20/3 = 40/3

or

13 and 1/3 pounds of $9 per pound coffee

3 0
3 years ago
Garth estimated the height of the door to his classroom in meters.what is a reasonable estimate?
insens350 [35]
A reasonable estimate is an educated guess made by an observer based on that person's current knowledge and following observations. For example, If Garth knew that he was 1.2 meters tall, and he observed that the door was approximately twice his own height, Garth could then make the reasonable estimate that the door is about 2.4 meters tall.
8 0
3 years ago
The population of bobcats in northern Arizona since 2008 can be modeled using the function b(t) = –0.32t2 + 2.7t + 253. What doe
Vesna [10]

Answer:

See below.

Step-by-step explanation:

t represents time (probably years).

The population of bobcats can't be negative, so negative values in the range do not make sense.

The function is continuous, but you're probably only looking at discrete values.

6 0
3 years ago
Find three consecutive numbers whose sum is 171.
-BARSIC- [3]
171/3 is 57. the three consecutive numbers are 56, 57 and 58.

244/4 is 61. the even integers are 58, 60, 62 and 64
5 0
3 years ago
Read 2 more answers
Nikki had a $50 gift card for her favorite store. She used the gift card to buy 4 DVDs and still had money available on the card
Y_Kistochka [10]
C?
 im kiiiinda guessing because i suck at math lol. 
3 0
3 years ago
Read 2 more answers
Other questions:
  • Daisy measured the heights of 20 plants.
    6·1 answer
  • If m XAB=32, what is m BAC?
    12·1 answer
  • A tree 63 ft high casts a 38 ft shadow. How tall is a tree that casts a 52 ft shadow at the same time of the day? (to the neares
    11·1 answer
  • Is 5/8 greater than 6/16
    7·1 answer
  • Solve this inequality 4.2x+5.6 < 7.2-8.3x
    14·2 answers
  • A bicycle has a listed price of 
    15·2 answers
  • 67 hundredths in numbers (decimals)
    9·1 answer
  • Solve for y a(n+y)=10y+32 what is the answer
    9·1 answer
  • Write 0.24 as a fraction in simplest form
    15·1 answer
  • Abby sold half of her comic books and then bought seventeen more. She now has 32. With how many did she begin?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!