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
Nataly [62]
3 years ago
15

A percent is the result of a number being expressed as a fraction

Mathematics
2 answers:
Ivan3 years ago
8 0
If it is a true or false question I believe its true.
bezimeni [28]3 years ago
7 0
Is this a true or false question?
You might be interested in
A parabola opening up or down has vertex (0,0) and passes through (12, -18). Write its
denis-greek [22]
The equation is y= -1/8x^2
4 0
3 years ago
Numbers that add to -0.5 and multiply to 1
Oliga [24]
Short Answer
There are two numbers
x1 = -0.25 + 0.9682i   <<<< answer 1
x2 = - 0.25 - 0.9582i   <<<< answer 2 
 
I take it there are two such numbers.
Let one number = x
Let one number = y

x + y = -0.5    
y = - 0.5 - x       (1)
xy = 1               (2)

Put equation 1 into equation 2
xy = 1
x(-0.5 - x) = 1
-0.5x - x^2 = 1               Subtract 1 from both sides.
-0.5x - x^2 - 1 = 0          Order these by powers
-x^2 - 0.5x -1 = 0           Multiply though by - 1
x^2 + 0.5x + 1 = 0         Use the quadratic formula to solve this.

\text{x = }\dfrac{ -b \pm \sqrt{b^{2} - 4ac } }{2a}

a = 1
b = 0.5
c = 1


\text{x = }\dfrac{ -0.5 \pm \sqrt{0.5^{2} - 4*1*1 } }{2*1}

x = [-0.5 +/- sqrt(0.25 - 4)] / 2
x = [-0.5 +/- sqrt(-3.75)] / 2
x = [-0.25 +/- 0.9682i

x1 = -0.25 + 0.9682 i
x2 = -0.25 - 0.9682 i

These two are conjugates. They will add  as x1 + x2 = -0.25 - 0.25 = - 0.50.

The complex parts cancel out.  Getting them to multiply to 1 will be a little more difficult. I'll do that under the check.

Check
(-0.25 - 0.9682i)(-0.25 + 0.9682i)
Use FOIL
F:-0.25 * -0.25 = 0.0625
O: -0.25*0.9682i
I: +0.25*0.9682i
L: -0.9682i*0.9682i = - 0.9375 i^2 = 0.9375

Notice
The two middle terms (labled "O" and "I" ) cancel out. They are of opposite signs.

The final result is 0.9375 and 0.0625 add up to 1
 
7 0
3 years ago
We’d help with this one all
Elanso [62]
The association is negative as the line goes down
5 0
3 years ago
Read 2 more answers
Please help me with this promblem!
Pepsi [2]

Answer:

The answer is D

8 0
3 years ago
A tree casts a shadow of 3 meters, while a meter stick casts a shadow of 0.75 meters. How tall is the tree?
Lunna [17]
3.75 meters I would presume.

Explanation: since a single meter casts a shadow of 0.75 meters that means for each meter, 0.25 meters are missing. So I added 0.75 to three, because there was 3 meters and 3 time 0.25 was 0.75 .
6 0
3 years ago
Other questions:
  • If a production line produces 50 mouse traps every 30 minutes over the course of a 10 hour work day with a half-hour break for l
    15·1 answer
  • Which rational exponent represents a cube root? A. 3/2 B. 1/2 C. 1/4 D. 1/3
    13·2 answers
  • The equation πr²Gives the area,A of a circle with a radius,r,. Solve the function for π
    6·1 answer
  • Witch equation can be used to find the dimensions
    8·2 answers
  • Find three consecutive odd positive integers such that 5 times the sum of all three is 72more than the product of the first and
    5·1 answer
  • QUESTION 4
    8·1 answer
  • A police officer is chasing a purse-snatcher down a street. The thief starts 9 meters ahead of the officer and can run 20 meters
    9·1 answer
  • Select the action you would use to solve x/4 = 16. Then select the propertys that justifies that action.
    14·1 answer
  • a carton of orange juice contains 540ml a special offer carton contains an extra 35% how many millilitres are in the special off
    7·1 answer
  • I need help pls help​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!