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
Triss [41]
2 years ago
14

Use the quadratic formula to solve for x 3x^2+14x=-11

Mathematics
1 answer:
Lady bird [3.3K]2 years ago
8 0
Answer is C. X=-11/3 x=-1. Hope this helps!
You might be interested in
PLEASE ANSWER. I WILL GIVE BRAINLIEST FAST
mr_godi [17]

Answer:

It is a right triangle

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Solve for q. Write your answer as “q=___”
wolverine [178]

Answer:

7q-46= 3q +6

7q-3q = 6+ 46

4q= 52

4q/4= 52/4

q= 13

3 0
3 years ago
Read 2 more answers
For the following arguments, determine which form the argument has and whether it is valid or invalid. Remember, determining if
Ira Lisetskai [31]

Answer:

A = valid

B = valid

C = Invalid

7 0
3 years ago
I need help on B and C. Not sure how I can solve those. Can someone please help me out here? Thank you for your help!
Valentin [98]

Nice job with part A on getting those correct answers.

====================================================

Part B

  • mu = mean = 43
  • sigma = standard deviation = 3

Let's calculate the z score for the raw score x = 37

z = (x - mu)/sigma

z = (37 - 43)/3

z = -6/3

z = -2

A negative z score tells us we're below the mean. Specifically, we are exactly 2 standard deviations under the mean.

If you repeat those steps for x = 46 (not changing mu or sigma), then you should get z = 1. So we're now 1 standard deviation above the mean.

Ultimately, we want to know the area under the standard normal curve (aka z curve) from z = -2 to z = 1.

Refer to the chart below which is a breakdown of the Empirical Rule. The pink areas are within 1 standard deviation of the mean. We have two regions taking up roughly 34% of the full area under the curve, so they combine to 34+34 = 68%

Then we add on another 13.5% which is the blue area on the left (between z = -2 and z = -1)

So 13.5+68 = 81.5% of the area under the curve is between z = -2 and z = 1.

<h3>Answer: 81.5</h3>

Note: the percent sign is already taken care of for us, so there's no need to type it in. But the answer above of course means 81.5% and that answer is approximate.

====================================================

Part C

Let's find the z score for x = 34. The values of mu and sigma are the same as before.

z = (x - mu)/sigma

z = (34-43)/3

z = -9/3

z = -3

So computing P(X > 34) is the same as P(Z > -3)

Notice how adding up all of the values in the chart mentioned gets us:

2.35+13.5+34+34+13.5+2.35 = 99.7

which means 99.7% of the distribution is within 3 standard deviations of the mean. The remaining 100% - 99.7% = 0.3% is the combined area of both tails. So each tail is (0.3%)/2 = 0.15%

In short, 0.15% of the area under the curve is to the left of z = -3

Therefore, 100% - 0.15% = 99.85% of the widgets are going to have z values larger than -3, which in turn means they have values larger than 34.

<h3>Answer: 99.85</h3>

Again you don't have to worry about the percent sign. Like before, the answer is approximate.

5 0
3 years ago
Wich is greater 500 seconds or 8 minutes
ohaa [14]
500 seconds is greater. Since there are 60 seconds in one minute you would multiply 60 and 8. 
60x8= 480
6 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following points lies in Quadrant II?
    8·2 answers
  • The total area under the probability density curve of any continuous distribution is 1.0.
    11·2 answers
  • If you triple 4 and subtract 2 each day, how many day until you have zero?
    8·1 answer
  • 3 1/2 pounds of honey ham for $10.25
    7·1 answer
  • 3=(1/4)f(-2)<br> How do u solve this
    12·1 answer
  • 7. Find the amount of money accumulated if you invest $10,000 at 3% interest compounded continuously for 2 years. Round your
    13·1 answer
  • I would appreciate the help!
    9·2 answers
  • Find the surface area of the prism or pyramid. Round to the nearest whole number if necessary.
    15·2 answers
  • If Sam &amp; Jack have 3 apples and Sam gives two away BUT Jack buys two more apples, how many apples does Sam &amp; Jack have n
    9·1 answer
  • Please help I’ll mark you as brainliest if correct
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!