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
VashaNatasha [74]
3 years ago
15

Find the discriminant. 7z2–7z+1=0

Mathematics
1 answer:
Yuki888 [10]3 years ago
7 0

Answer:

21

Step-by-step explanation:

You might be interested in
2. H = 5 cm<br> W= 4 cm<br> L= 8 cm<br> V= L×W×H<br> =___×___×___<br> =______cm3​
hram777 [196]

Answer:

160cm^3

Step-by-step explanation:

5 x 4 x 8 = 160cm^3

6 0
3 years ago
Read 2 more answers
(1 point) solve the separable differential equation y′(x)=2y(x)+18−−−−−−−−−√, y′(x)=2y(x)+18, and find the particular solution s
luda_lava [24]
We write the equation in terms of dy/dx,
<span>y'(x)=sqrt (2y(x)+18)</span>
dy/dx = sqrt(2y + 18)
dy/dx = sqrt(2) ( sqrt(y + 9)) 

Separating the variables in the equation, we will have:
<span>1/sqrt(y + 9) dy= sqrt(2) dx </span>

Integrating both sides, we will obtain
<span>2sqrt(y+9) = x(sqrt(2)) + c </span>
<span>where c is a constant and can be determined by using the boundary condition given </span>
<span>y(5)=9 : x = 5, y = 9
</span><span>sqrt(9+9) = 5/sqrt(2) + C </span>

<span>C = sqrt(18) - 5/sqrt(2) = sqrt(2) / 2</span>

Substituting to the original equation,
sqrt(y+9) = x/sqrt(2) + sqrt(2) / 2

<span>sqrt(y+9) = (2x + 2) / 2sqrt(2) 
</span>
Squaring both sides, we will obtain,
<span>y + 9 = ((2x+2)^2) / 8</span>

y = ((2x+2)^2) / 8 - 9
7 0
3 years ago
Round seven point seven six to one decimal place
Rzqust [24]
7.76 to one decimal place

= 7.8

We are looking at one decimal place, in this case the number 7 after the decimal place next to 6. Any number above 5 rounds up the number in front of it. 6 is above 5 so it changes the 7 to an 8.
6 0
3 years ago
Read 2 more answers
Please help 100 points ​
muminat

Answer:

Type that out please I can't read it sideways

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Find the value of x.<br> A. 22.5<br> B.40<br> C.45<br> D.95
Troyanec [42]

Answer:

x = 22.5

Step-by-step explanation:

The tangent- secant angle x is half the difference of the measures of the intercepted arcs, that is

\frac{1}{2} (4x + 5 - 50 ) = x ( multiply both sides by 2 )

4x - 45 = 2x ( subtract 2x from both sides )

2x - 45 = 0 ( add 45 to both sides )

2x = 45 ( divide both sides by 2 )

x = 22.5

4 0
3 years ago
Other questions:
  • The diameter of a circular swimming pool is 8.5 m. What is the approximate circumference of the pool? Round to the nearest tenth
    9·2 answers
  • Write equivalent expressions for x^7 • x^-2
    13·1 answer
  • -20 divided 2+ (-15)=
    5·1 answer
  • Which is precisely defined using the undefined terms point and plane?
    11·1 answer
  • WHEN CALCULATING THE AREA OF A TRAPEZOID, HOW DO YOU DETERMINE WHICH SIDES ARE THE BASES
    13·1 answer
  • Very Easy Question) Round 571,984 To The Nearest 100 ! )
    15·2 answers
  • (3+ 1/2) x 14 pls help me
    8·2 answers
  • People still doin homework or work?
    12·2 answers
  • What are the values of x and y in the figure
    9·1 answer
  • Please help me help please help
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!