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
dimulka [17.4K]
4 years ago
9

Solve 14n2+32n=−34 by using the quadratic formula. Simplify any fractions. If there are multiple answers, list them separated by

a comma, e.g. 1,2. If there is no solution, enter ∅.
Mathematics
1 answer:
bezimeni [28]4 years ago
7 0

Answer:

Step-by-step explanation:

Hello, first of all we can divide by 2.

7n^2+16n+17=0\\\\\Delta=b^2-4ac= 16^2-4*7*17=-220 < 0 \ \ !!

The discriminant is negative so there is no real solutions.

Thank you.

You might be interested in
Gloria earned $26 for babysitting for 4 hours. Write and Solve an equation to determine how much Gloria would earn after babysit
posledela

Answer:

Equation: ($26÷4 hours) × 25 hours

Answer: $156.25

Step-by-step explanation:

First, you would have to find out how much she earns per hour, so $26÷4. Then you multiply that by 25.

(26÷4) x 25=$156.25.

(hope this helps :P)

3 0
3 years ago
Suppose that 15% of the fields in a given agricultural area are infested with the sweet potato whitefly. One hundred fields in t
hram777 [196]

Answer:

a.\mu=15

b.\mu=7.8586 \ and  \ \mu=22.1414

c. Choice A- Based on limits above, it is unlikely that we would see x = 45, so it might be possible that the trials are not independent.

Step-by-step explanation:

a.Binomial distribution is defined by the expression

P(X=k)=C_k^n.p^k.(1-p)^{n-k}

Let n be the number of trials,n=100

and p be the probability of success,p=15\%

The mean of a binomial distribution is the probability x sample size.

\mu=np=100\times0.15=15

b.Limits within which p is approximately 95%

sd of a binomial distribution is given as:\sigma=\sqrt npq\\q=1-p

Therefore, \sigma=\sqrt(100\times0.015\times0.85)=3.5707

Use the empirical rule to find the limits. From the rule, approximately 95% of the observations are within to standard deviations from mean.

sd_1=>\mu-2\sigma=15-2\times3.3507=7.8586\\sd_2=>\mu-2\sigma=15+2\times3.3507=22.1414

Hence, approximately 95% of the observations are within 7.8586 and 22.1414 (areas of infestation).

c.  x=45 is not within the limits in b above (7.8586,22.1414). X=45 appears to be a large area of infestation. A.Based on limits above, it is unlikely that we would see x = 45, so it might be possible that the trials are not independent.

4 0
4 years ago
A cone has a height of 5 inches and a radius of 4 inches. What is its volume?
Yuki888 [10]

9514 1400 393

Answer:

  83.73 in³

Step-by-step explanation:

It is appropriate to use the formula for the volume of a cone:

  V = (1/3)πr²h

  V = (1/3)(3.14)(4 in)²(5 in) ≈ 83.73 in³

The volume of the cone is about 83.73 in³.

5 0
3 years ago
Need help with special right triangles
svetoff [14.1K]

Answer:

explain what you need help about then i will try to help you

Step-by-step explanation:

6 0
3 years ago
Find the slope of the line and sketch the graph.<br><br> 3x + 4y = 25<br> (dont worry abt sketching)
polet [3.4K]
The slope is -3/4 .
Here’s the graph

3 0
3 years ago
Other questions:
  • The total load on a certain service is 525 kva. one-third of this load is from motors; 3/5 is lighting; and 1/15 is from other l
    11·2 answers
  • Athena uses her credit card to buy some clothes for $738.14. She can pay off up to $265 per month. The card has an annual rate o
    14·1 answer
  • There are 8 students on a minibus. 5 students are boys. What is the fraction of students?
    15·2 answers
  • Francesca has 63 cm of ribbon. She will cut it into two pieces so that the longer piece is 15 cm longer than the shorter piece.
    8·2 answers
  • Translate this sentence into an equation.
    8·1 answer
  • £1 = 1.18 euros How many pounds will lisa have to exchange to get 300.90 euros. (please answer!)
    8·2 answers
  • If you place a 39-foot ladder against the top of a 23-foot building, how many feet will
    10·2 answers
  • What is (3 x 105) x (4 x 103) in SCIENTIFIC NOTATION?
    13·2 answers
  • A
    8·1 answer
  • This scale drawing shows an enlargement in a figure.What is the value of x? Enter your answer as a decimal in the box.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!