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
astraxan [27]
3 years ago
6

Find the value of this expression if x = 4 x^2 -8

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
3 0

Let's solve your equation step-by-step.

x=4x2−8

Step 1: Subtract 4x^2-8 from both sides.

x−(4x2−8)=4x2−8−(4x2−8)

−4x2+x+8=0

For this equation: a=-4, b=1, c=8

−4x2+1x+8=0

Step 2: Use quadratic formula with a=-4, b=1, c=8.

x=−b±√b2−4ac2a

x=−(1)±√(1)2−4(−4)(8)2(−4)

x=−1±√129−8

x=18+−18√129 or x=18+18√129

Answer:

x=18+−18√129 or x=18+18√129

You might be interested in
What is the image on segment Oj rotated 270 counterclockwise around point 0?
inysia [295]

Answer:

OL and M

Step-by-step explanation:

(1)

270° ÷ 30° = 9

Count 9 dashed lines from OJ counterclockwise, then

OJ → OL

(2)

120° ÷ 30° = 4

Count 4 dashed lines from R counterclockwise, then

R → M

6 0
3 years ago
67.935 in expanded form in fraction form after the decimal
Colt1911 [192]
Hello,

67.935=67+935/1000=67+187/200 = 67|187/200
======================================
5 0
2 years ago
Matt is mailing a rectangular package at the post office the box's volume is 24 in.³ what are all of the possible dimensions len
Greeley [361]

Answer:

The answer to your question is below

Step-by-step explanation:

Data

Volume = 24 in³

Process

1.- Find the prime factors of 24

                        24  2

                         12  2

                          6  2

                          3  3

                           1

2.- Volume of a rectangular package

             Volume = length x height x width

3.- Possible values are, combine the prime factors to find the volume

             Volume = 4 x 2 x 3   or

             Volume = 2 x 4 x 3

             Volume = 3 x 2 x 4

             Volume = 2 x 2 x 6

             Volume = 6 x 2 x 2

             Volume = 2 x 6 x 2

             Volume = 12 x 2 x 1

             Volume = 1 x 12 x 2

             Volume = 2 x 1 x 12

8 0
3 years ago
In rectangle ABCD, AB=8 units and BC=15 units. Find BD
BabaBlast [244]

Answer:


Step-by-step explanation:


5 0
3 years ago
Read 2 more answers
25 feet in 4 seconds; 80 feet in x seconds write a proportion for each phrase and solve it​
ozzi

Answer:

12.8 seconds

Step-by-step explanation:

Create a proportion where x is the number of seconds for 80 feet

\frac{25}{4} = \frac{80}{x}

Cross multiply and solve for x

25x = 320

x = 12.8

So, the answer is 12.8 seconds

3 0
3 years ago
Other questions:
  • In the circle , mBC =38 and mAD =146 <br> What is m
    10·1 answer
  • A sphere and a cylinder have the same radius and height. The volume of the cylinder is 21m3
    13·2 answers
  • What is the y-intercept in the equation y=4x-3?
    8·2 answers
  • Is 11/12 a rational or irrational number
    13·1 answer
  • Least common multiple for 40 and 25
    6·1 answer
  • Create an equation with at least two grouping symbols for which there is no solution
    5·1 answer
  • Bill is 6 inches taller than Nancy. Use n for Nancy's height. Write an expression for Bill's height: I​
    5·1 answer
  • Please help! and explain the answer please
    11·1 answer
  • A caterer is preparing meals for a party of 78 guests. If about 1/4 of the guests want steaks, about how many steaks should the
    11·1 answer
  • PLS HELP ASAP ILL GIVE BRAINLKEST THANKS
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!