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
alexira [117]
3 years ago
11

2(1^2-1)+3 what is the simplified form

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
5 0

Answer:

2^2+1

Step-by-step explanation:

2(1^2 - 1) +3

2^2 -2 +3

2^2 + 1

You might be interested in
A spinner is divided into five colored sections that are not of equal size: red, blue, green, yellow, and purple. The spinner is
kakasveta [241]

Answer:

10/54 = 0.185

8 0
3 years ago
A rectangle has a width of 10 centimeters. The rectangles length is 4 times it’s width what is the perimeter of the rectangle
DiKsa [7]

Answer:

40

Step-by-step explanation:

the length would be 40 because four tens equals 40.

4 0
3 years ago
8. The speed of the current in a river is 6 mph. A ferry operator who works that part of the river is looking to buy a new boat
Natali [406]
Answer: the speed of the boat on the lake is 9 mph
Step-by-step explanation:
Let x represent the speed of the boat on the lake or in still water.
The speed of the current in a river is 6 mph. This means that if the boat goes upstream against the speed of the current, its total speed would be (x - 6)mph. If the boat goes downstream against the speed of the current, its total speed would be (x + 6)mph.
Time = distance/ speed
Every day, his route takes him 22.5 miles each way against the current and back to his dock, and he needs to make this trip in a total of 9 hours. This means that the time taken to travel upstream is
22.5/(x - 6). The time taken to travel downstream is
22.5/(x + 6)
Since the total time is 9 hours, it means that
22.5/(x - 6) = 22.5/(x + 6)
Cross multiplying, it becomes
22.5(x + 6) + 22.5(x - 6) = 9
Multiplying through by (x + 6)(x - 6), it becomes
22.5(x - 6) + 22.5(x + 6) = 9[(x + 6)(x - 6)]
22.5x - 135 + 22.5x + 135 = 9(x² - 6x + 6x - 36)
22.5x + 22.5x = 9x² - 324
9x² - 45x - 324 = 0
Dividing through by 9, it becomes
x² - 5x - 36 = 0
x² + 4x - 9x - 36 = 0
x(x + 4) - 9(x + 4) = 0
x - 9 = 0 or x + 4 = 0
x = 9 or x = - 4
Since the speed cannot be negative, then x = 9
3 0
2 years ago
Read 2 more answers
PLEASE BRAINLY AND 25 PIONTS!!!!!!! PLEASE ONLY CORRECT!<br><br> Evaluate the radical.<br><br> 8√3
Anni [7]
So first calculate root of 3 which is 1.732
Next multiply by 8 to get 13.856
Hope this helps:)
7 0
3 years ago
Read 2 more answers
Part A: Rhett made $250 washing cars with his mobile car wash company. He charges $70 per car and earned $50 in tips. Write an e
neonofarm [45]

Answer:

250=70x+50

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • –243 = -9(10 + w)<br><br> please help me
    5·2 answers
  • Joseph has started completing the square on the equation 3x^2 - 7x + 12 = 0. He has worked to the point where he has the express
    12·1 answer
  • Given the information below, is QRS similar to UVT ? If so, give the scale factor.
    14·1 answer
  • Write the value of 8 in 281,480,100
    10·1 answer
  • V
    7·2 answers
  • 1. the figure below is a parallelogram which statement must be true
    7·1 answer
  • Urgent! Thankyou!! Extra points! <br> 1. Create a rational expression that will be undefined at x=1
    8·1 answer
  • In a seminar of 1200 people, 65 percent were women, How many men were in the seminar?
    8·2 answers
  • Solve the equation using the method of completing the square.
    11·2 answers
  • Guys right now help me please
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!