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
Karolina [17]
3 years ago
8

3t + 5sqrt(t) - 2 = 0 solve by using substitution

Mathematics
2 answers:
notsponge [240]3 years ago
3 0

Answer:

The answer is t=1/9

Step-by-step explanation:

If we substitute sqrt(t) = u, then we can write the equation as 3u^2+5u-2=0.

Using the <em>quadratic formula</em>, we can solve that <u>u = 1/3 and u = -2.</u>

We can go back to our original substitution and say that <em>sqrt(t) = 1/3</em>. The sqrt(t) can not be -2 because a <u>square root can not be negative.</u>

If we solve the equation sqrt(t) = 1/3, we get that t=1/9.

dlinn [17]3 years ago
3 0
This is something that I haven’t learned yet but I think the answer is 25
You might be interested in
What is the greatest common factor of 56, 80 and 56?
Irina-Kira [14]
The greatest common factor would be 8
3 0
3 years ago
Read 2 more answers
A fence is 695
Rasek [7]
Let the two parts with equal length have length x.
The longer part has length x + 20.

The sum of the three lengths is 695 m.

x + x + x + 20 = 695

3x + 20 = 695

3x = 675

x = 225

x + 20 = 245

The two short parts measure 225 m, and the long part measures 245 m.
5 0
3 years ago
The price of a shoes as reduced from 60 to 45. by what percentage was the price of the shoes reduced?
sweet-ann [11.9K]
45 is 75% of 60 but if you’re looking for the difference subtract 75 from 100, so 25%
8 0
3 years ago
What’s the cube root of -9
Aneli [31]
It might be -3 because 3•-3 is -9?
7 0
3 years ago
A recipe calls for 4 2/3 cups of stock. If 4 1/2 times the recipe needs to be made, how much stock will be needed?
Sunny_sXe [5.5K]
4 2/3 cups of stock multiplied by 4 1/2 = 21 cups of stock
3 0
3 years ago
Other questions:
  • What are the zeros of 3x^2+17x-6
    7·1 answer
  • A golfer hit a ball from a tee that is 6 yards above the ground. The graph shows the height in yards of the golf ball above the
    15·1 answer
  • A rectangular rug has
    11·1 answer
  • Expand the brackets
    14·1 answer
  • Will give brainly if ur right and maybe a kiss
    12·1 answer
  • Find the sum and product of the roots of each equation of <img src="https://tex.z-dn.net/?f=2x%5E%7B2%7D" id="TexFormula1" title
    7·1 answer
  • Can somebody please help me
    6·1 answer
  • The figure shows the dimensions of a birdhouse Sharri built. How much birdseed will it take to fill Sharri’s birdhouse completel
    11·2 answers
  • Please help me best answer gets an brainlist !!!
    5·1 answer
  • Write an equation of the line passing through the point (7,3) that is parallel to the line y=2x-4. ​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!