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
stepan [7]
3 years ago
6

Help please! 6x^2+2x-9=0 A 6.4, -8.4 B 1.1, -1.4 C -2.2, 2.8 D -1.1, -1.4

Mathematics
1 answer:
Yakvenalex [24]3 years ago
6 0
6x^2+2x-9=0\\\\a=6;\ b=2;\ c=-9\\\\\Delta=b^2-4ac\to\Delta=2^2-4\cdot6\cdot(-9)=220\\\\x_1=\dfrac{-b-\sqrt\Delta}{2a};\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\x_1=\dfrac{-2-\sqrt{220}}{2\cdot6}=\dfrac{-2-\sqrt{220}}{12}\approx-1.4\\\\x_2=\dfrac{-2+\sqrt{220}}{2\cdot6}=\dfrac{-2+\sqrt{220}}{12}\approx1.1

Answer: B. 1.1; -1.4.
You might be interested in
What is the value of x?
tekilochka [14]

Answer:

Step-by-step explanation:

since we can see that the lines are parallel

and we can see that the both are interior angles and when we sum up both angles we get 180

2x - 5  + 45 = 180

2x  + 40 =180

2x = 180 - 40

2x =140

x = 140/2

x = 70

4 0
3 years ago
Please help !<br> I need the answers for #43 and #44
Vlad [161]

43. 9 + 10 + 13 + 13 = $45

45 - 1 = 44

44 x 4 = 176

176 + 8 = 184

184/4 = 46

46 tokens per person

44. a. 22 x 5 = 110

943/110 = 8.7

you will need 9 bookcases

b. 110 x 9 = 990

990 - 943 = 47

47 - 44 = 3

There will be 3 books on the third shelf.

4 0
3 years ago
3.74 - 1.53 =<br> I need help
galina1969 [7]

Answer:2.21

Step-by-step explanation:I used a calculator

7 0
3 years ago
Read 2 more answers
45+ 46+47+ 48+ ... 113 + 114Gauss approach
Doss [256]

Answer:

5565

Step-by-step explanation:

1+2+3+4...+113+114=\frac{114*115}{2} =6555

1+2+3+4 ... +43+44=\frac{44*45}{2} =990

Thus, 45+46+47+48...+113+114= 6555-990=5565

3 0
3 years ago
Harry Joodini has insured his home for 85% of its replacement value of $185,000. Use the chart to determine the amount of covera
Reika [66]
Total coverage = 0.85 x 185,000 = $157,250

Coverage for Loss of Use = 0.25 x 157250 = $39,312.50
7 0
3 years ago
Other questions:
  • What’s the answers ?
    13·1 answer
  • Person is randomly selected. what is the probability that the person is:
    11·1 answer
  • Logs are stacked in a pile with 74 logs on the bottom row and 6 on the top row. Each row has four more logs than the row above i
    11·1 answer
  • The cost to manufacture x pairs of sunglasses can be represented by a function, C(x). If it cost 398 to manufacture 4 pairs of s
    14·1 answer
  • Please help me struggling
    10·1 answer
  • What is the mean number of vehicles owned by the families in Class A? Explain or show how you arrived at your answer.
    13·1 answer
  • Darius buys a bottle of a chemical solution that contains 70% percent alcohol. The bottle contains 500 milliliters of solution.
    7·1 answer
  • Sal purchases a new gaming system and games for $530. The tax is 7%. How much would he spend in taxes only ?
    6·2 answers
  • The radius of a circle is 9in. Find it’s circumference in terms of
    11·1 answer
  • What is the product?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!