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
blagie [28]
3 years ago
9

Solve for x. 0.71= 1/2(9.8) x^2. ​

Mathematics
1 answer:
Fudgin [204]3 years ago
5 0

Answer: 0.38065

in simpler terms x=±  0.145  =±0.38065

Step-by-step explanation: -490x2+71 = 0  

Subtract  71  from both sides of the equation :  

                     -490x2 = -71

Multiply both sides of the equation by (-1) :  490x2 = 71

Divide both sides of the equation by 490:

                    x2 = 71/490 = 0.145

 

When two things are equal, their square roots are equal. Taking the square root of the two sides of the equation we get:  

                     x  =  ± √ 71/490  

The equation has two real solutions  

These solutions are  x = ±√ 0.145 = ± 0.38065  

You might be interested in
Grogg typed the following $1000$ expressions into his calculator, one by one: \[\sqrt{1}, \sqrt{2}, \sqrt{3}, \sqrt{4}, \dots, \
Vanyuwa [196]

Since 30² = 900 and 40² = 1600, between 30 and 40 of the numbers Grogg enters will reduce to integers. Now just find which count is correct. We don't have to look far:

31² = 961

32² = 1024

so there 31 of the outputs of √1, √2, √3, ..., √1000 are integers.

8 0
2 years ago
What is 248% as a mixed number?
vovikov84 [41]
248% is the same amount as 2.48 or 2 and 12/25.
6 0
3 years ago
Maggie has a ribbon 27 feet long. what is the length of the ribbon in yards? equation : answer :
nadezda [96]
3 feet in a yard so you would divide 27 by 3 that gives an answer of 9
3 0
3 years ago
What would happen if the air outside the hot air balloon were as hot as the air inside?¯\_(ツ)_/¯
baherus [9]

Answer:

no change

Step-by-step explanation:

The system would be at equilibrium meaning there would be no change

6 0
2 years ago
What is 100/7 divided by 4 1/3 simplified if you answer thank you and happy holidays
SVETLANKA909090 [29]

Answer: 300/91

Step-by-step explanation:

1. Convert 4 1/3 to an improper fraction

13/3

2. Divide, using the keep, change, flip method to divide fractions

- Keep the first fraction the same (100/7)

- Change the division sign to a multiplication sign

- Flip the second fraction (13/3 -> 3/13)

3. Plug-in and evaluate

100/7 * 3/13

300/91

If you are looking for the solution as a mixed number, it is 3 27/91

4. Simplify, if applicable. This fraction cannot be simplified any further.

7 0
3 years ago
Other questions:
  • the sum of the interior angles of the polygon is 20 right angles. how many sides does the polygon have?
    5·1 answer
  • What is - 32= - 4x because I am having so much trouble
    15·2 answers
  • Use Green's Theorem to evaluate the following line integral. Assume the curve is oriented counterclockwise.The circulation line
    13·1 answer
  • The lifespans of meerkats in a particular zoo are normally distributed. The average meerkat lives 13.1 years; the
    7·2 answers
  • Evaluate |x-13| when x=5. <br> A.8<br> B.-8<br> C.21<br> D.-21
    6·1 answer
  • D) $1.35 Which expression is equivalent to 2x - 17?<br>​
    14·1 answer
  • You buy tomato sauce for $0.37 per ounce. One portion of potato gnocchi requires 3.5 ounces of tomato sauce. How much does the s
    5·2 answers
  • What are the solutions to the system of equations?
    9·1 answer
  • Pls whoever knows how to do this best answer smart people 100% this geometry work give Brainly pls help
    13·1 answer
  • Write an equation for the line that passes through (−8.5,11) and (5,−2.5)
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!