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
Vikentia [17]
1 year ago
7

What is the e intermediate step in the form (x+a)^2=b as a result of completing the square for the following equation? x^2+6x+19

=4x
Mathematics
1 answer:
igomit [66]1 year ago
8 0
Answers of "a" is -66, 18 pls show how to get to the answer of "a"
You might be interested in
A construction zone on Interstate 15 has a speed limit of 40 mph. The speeds of vehicles passing through this construction zone
monitta

Answer:

a. The percentage of vehicles who pass through this construction zone who are exceeding the posted speed limit =90.82%

b. Percentage of vehicles travel through this construction zone with speeds between 50 mph and 55 mph= 2.28%

Step-by-step explanation:

We have to find

a) P(X>40)= 1- P(x=40)

Using the z statistic

Here

x= 40 mph

u= 44mph

σ= 3 mph

z=(40-44)/3=-1.33

From the  z-table   -1.67 = 0.9082

a) P(X>40)=

Probability exceeding the speed limit = 0.9082 = 90.82%

b) P(50<X<55)

Now

z1 = (50-44)/3 = 2

z2 = (55-44)/3= 3.67

Area for z>3.59 is almost equal to 1

From the z- table we get

P(55 < X < 60) = P((50-44)/3 < z < (55-44)/3)

     = P(2 < z < 3.67)

     = P(z<3.67) - P(z<2)

     = 1 - 0.9772

     = 0.0228

or 2.28%

3 0
3 years ago
A train is traveling at 60 mph. If the rate of speed increases 4 mph each hour,
Alenkasestr [34]

Answer:

B) 5 hours

Step-by-step explanation:

First, find the amount of mph between 60 and 80:

80 - 60

= 20 mph

Since the speed increases 4 mph per hour, we can find how long it will take to get to 80 mph by dividing 20 by 4:

20/4

= 5

So, the correct answer is B, 5 hours

6 0
3 years ago
A radio station sells buttons and bumper stickers at a local fair. The buttons cost $2.95 each, and the bumper stickers cost $3.
MA_775_DIABLO [31]

you question isn't quite clear.....

3 0
3 years ago
Questions:<br>1) 2x2 + 5x + 2 = 0​
xz_007 [3.2K]

Answer:

x = -1/2 and -2

Step-by-step explanation:

Solve for <em>x</em>: Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

Using the quadratic formula: Solve the equation for x by finding a, b, and c of the quadratic then applying the quadratic formula.

7 0
3 years ago
Read 2 more answers
Convert the polar equation to rectangular form r=2/1+sin( theta)
Nataly_w [17]
r=\dfrac2{1+\sin\theta}
r+r\sin\theta=2
\implies \sqrt{x^2+y^2}+y=2
8 0
3 years ago
Other questions:
  • Which ordered pair makes both inequalities true? y &gt; –2x + 3 y &lt; x – 2 A.(0,0) B.(0,–1) C.(1,1) D.(3,0)
    9·1 answer
  • Marcus drew a line from point y to point w in the rectangle shown below. he created two identical triangles. classify the triang
    9·1 answer
  • What is perimeter of rectangle JKLM?
    13·2 answers
  • −4.75= z over 2. What is Z?<br> ​
    12·2 answers
  • What is the definition of rate?
    7·1 answer
  • D (t)=16t□2+96t+112 where t represents time in seconds
    10·1 answer
  • ? cm<br> 3 cm<br> 7 cm<br> 4 cm<br> 7 cm<br> Missing length
    11·1 answer
  • 6. A cylindrical oatmeal canister has a diameter of 4 inches and a hight of 10 inches. The manufac-
    7·1 answer
  • Help me please asap !! lol
    15·1 answer
  • Graph (1,-3) on a grid
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!