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
andre [41]
3 years ago
15

Solve for x: 20x2 - 7x = 6

Mathematics
1 answer:
azamat3 years ago
4 0

Answer:

if the x after the 20 means multiply then the answer is -34/7 or -4 6/7 if the x is a letter then it's 2/11

Step-by-step explanation:

20x2-7x=6

20x2=40

40-7x=6

subtract 40 from 6= 34

-7x=34

34÷-7= -34/7 if needed in a mixed fraction -4 6/7

You might be interested in
Fluency Practice 8x6= (8x5) + (8x__)=
Valentin [98]
The answer is 1.

8x6=48

8x5 + 8x1 = 48
4 0
3 years ago
What is the 5th term of the expansion of (3x+y^4)^7
chubhunter [2.5K]

9514 1404 393

Answer:

  945x^3·y^16

Step-by-step explanation:

The 5th term will be ...

  C(7,4)(3x)^3(y^4)^4 = 35·27·x^3·y^(4·4)

  = 945x^3·y^16

_____

The coefficients of the expansion are C(n, k) where n is the exponent of the binomial, and k+1 is the term number. This is n!/(k!(n-k)!). The general (k-th) term of the expansion (a+b)^n is C(n, k)a^(n-k)b^(k) where k ranges from 0 to n.

8 0
3 years ago
-10 &lt; 3x + 2 &lt; 8<br><br>Please answer for 29 points
cupoosta [38]

Answer:

x=1 or 0

Step-by-step explanation:

because if X is 1 then 3*1 is 3 and 3+2 is five then it's bigger than -10 and smaller than 8

0*3 is 0 then 0 plus 2 is 2 which also works

6 0
3 years ago
The snow is now 52 inches deep. If this was a 77% decrease, what was the initial depth? What equation can help you find this?
IrinaVladis [17]

Answer:

The required equation is:

0.23x = 52

Hence, option A is true.

Step-by-step explanation:

Given

Let 'x' be the initial depth

The snow is now 52 inches deep and it is a 77% decrease.

Let the initial 'x' depth be represented as 100%.

x → 100%

Given the current 52 inches is a 77% decrease. So, we need to decrease the 77/100 or 0.77 from the initial depth, so

[100% - 77%] of x = 52

[100/100 - 77/100] × x = 52

[1 - 0.77] × x = 52

0.23x = 52

Therefore, the required equation is:

0.23x = 52

Hence, option A is true.

7 0
3 years ago
How do you work out 3^2+2^3 indices
Bingel [31]

3^2 +2^3

9+2^3

9+8

Answer : 17

4 0
3 years ago
Other questions:
  • Simplify the following as much as possible.<br> (t^4)/(t^7) Give your answer using the form Atb
    8·1 answer
  • HELP ASSAP WITH THIS QUESTION
    6·1 answer
  • Answer question 4 and 5
    10·1 answer
  • What is the vertex and equation for axis of symmetry of f(x)= x^2 +4x+3
    15·2 answers
  • Jing Ya does not want to be late. If he needs to get to school by 8:00 am. each day,what is the latest time.he should get on the
    9·1 answer
  • a box of marbles can be shared equally among 6,7,or 8 students with 4 marbles left over each time.what is the least possible num
    6·1 answer
  • B
    8·2 answers
  • The sum of measures of two supplementary angles is 90°
    12·2 answers
  • What is the greatest common factor of 28 and 49
    8·1 answer
  • Simplify the expression.<br> 2(5+9)-6
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!