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
nadya68 [22]
2 years ago
14

How do you solve...0=-5t^2+20t+1

Mathematics
1 answer:
-Dominant- [34]2 years ago
4 0
There were 2 solutions that i came up with. Here is the first one. I rearranged the  eqaution by subtracting what is to the right of thr equal sign. Multiply the coefficeint of the first term by the constant 5 x (-1)= -5. Then you would find 2 factors of -5 whose sum equals the coefficient of the middle term which is 20. -5+1= -4 and  -1+5=4.  the eqaution then comes to 5t^2-20t-1=0. you would solve  5t^2-20t-1=0. you would divide both sides of the equal sign by 5. t^-4t-1/5=0. then t^2-4t=1/5. add 4 to both sides of the equation.  so we get 21/5+ 4 + 4t -t^2=21/5. it then comes out to be t^2-4t+t=t-2^2. according to the law of transitivity it is t-2^2=21/5.

 t =(20+√420)/10=2+1/5√<span> 105 </span><span>= 4.049 </span>. 
You might be interested in
Solve the multi step literal equation: solve equation for A b^2A^2-3g=q
I am Lyosha [343]

Answer:

A = ± \sqrt{\frac{q+3g}{b^2} }

Step-by-step explanation:

Given

b²A² - 3g = q ( add 3g to both sides )

b²A² = q + 3g ( divide both sides by b² )

A² = \frac{q+3g}{b^2} ( take the square root of both sides )

A = ± \sqrt{\frac{q+3g}{b^2} }

5 0
3 years ago
Match the part of the circle with the term that best describes it.​
nordsb [41]
GH: chord
M: point of tangency
MJ: diameter
J: center
MH: radius
GH: secant
6 0
2 years ago
A pile of 15 boxes is 3 metres high. What is the depth of each box?
Vikentia [17]
200mm is the right answer
4 0
3 years ago
Jeannie discovered that the ratio of kilometers to miles is 1 to 0.6. When her family was driving in Canada, she saw a sign that
Assoli18 [71]
Simply multiply 80 by .6

80 x .6 = 48 miles
8 0
2 years ago
Read 2 more answers
You use 66 gallons of water on 20 plants in your garden. At that rate, how much water will it take to water 30 plants?
erma4kov [3.2K]
99 gallons it takes 3 1/3 gallons to water 1 plant then multiply 3 1/3*30
6 0
3 years ago
Read 2 more answers
Other questions:
  • HELP PLEASE!!! 50 PTS
    10·2 answers
  • Order the set of numbers from least to greatest:<br> -5, - 26,-31
    8·2 answers
  • Evaluate.<br><br><br><br> 2^−2⋅(12⋅3)−5^3<br><br><br><br> Enter your answer in the box.
    11·1 answer
  • Which of the following problems would NOT have a solution?
    15·2 answers
  • B) What did you assume about the measurements that were not given?
    11·1 answer
  • If 20% of a number is 386, what will be 30% of the same number
    13·2 answers
  • I’m confused, I don’t know how to get the value
    8·1 answer
  • A family visits a car show to research information on vehicles they might consider purchasing. Brochures for each vehicle provid
    7·1 answer
  • Write 0.5 repeating as a fraction
    9·2 answers
  • Do you guys know how to find a square root or cube root without a calculator? I need a explanation and a example.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!