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
gayaneshka [121]
3 years ago
13

How much : 100-99+98-97+....+4-3+2-1 = ?

Mathematics
2 answers:
Alexandra [31]3 years ago
8 0
Without accurate calculations i would say 50
RSB [31]3 years ago
3 0
100-99=1
1+98= 99
99-97= 2
2+4=6
6-3= 3
3+2=5
5-1=4
You might be interested in
What is the length of segment DC?
andrew11 [14]

Answer:33 units

Step-by-step explanation:

4 0
4 years ago
How can you write a pair of fractions as fractions with a common denominator
sineoko [7]
U find multiples of both denominators and then us the least number that matches both as the new denominator then multiply your other two fractions to get the same denominator that u got in your multiples and then multiply whatever number you have with your number you multiply by to get the denominator on both fractions

not very good at explaining things but I really hope this helps
7 0
3 years ago
Derive the equation of the parabola with a focus at (−5, 5) and a directrix of y = −1. (2 points)
umka2103 [35]

Focus of the parabola is (-5,5) and directrix is y = -1.

Let's assume a point (x,y) on parabola.

According to definition of parabola, the distance between point (x,y) and focus (-5,5) would be same as the distance between the point (x,y) and directrix y = -1.

\sqrt{(x+5)^2+(y-5)^2} = \sqrt{(y+1)^2} \\\\(x+5)^2+(y-5)^2=(y+1)^2 \\\\(x+5)^2 + y^2 - 10y +25 = y^2 +2y +1 \\\\(x+5)^2 =  -y^2 +10y -25 + y^2 +2y +1 \\\\(x+5)^2 = 12y -24 \\\\12y =  (x+5)^2  +24 \\\\ y = \frac{1}{12} (x+5)^2  +2

Hence, option D is correct, i.e. f(x) = one twelfth (x + 5)2 + 2.

7 0
3 years ago
Read 2 more answers
Identify the constant of proportionality in the folliwing equation y= 7.25x
Vikki [24]
The constant of proportionality is 7.25
3 0
3 years ago
Reduce 36/60 to simplest terms
Alborosie

Answer:3/6

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • 18 animals in a pet store. some are birds and some are dogs. there are 50 legs in all. how many birds and how many dogs are ther
    5·2 answers
  • The sum of two times a number and 5 is 11
    5·1 answer
  • Which of the following represents "next integer after the integer n"?<br> n<br> n +1<br> 2n
    14·1 answer
  • How are discontinuities and zeros created in rational expressions
    13·1 answer
  • X + 91 = 100<br><br> what does "x" equal?<br><br> ***Explain the answer please!** :D
    13·2 answers
  • Simplify a^15/ a^5<br> Pleaaaaseeeeee
    14·2 answers
  • Alvin is 5 years older than elga. the sum of their age is 85. what is elga age
    13·2 answers
  • Write an algebraic expression to represent the verbal statement: The product of the difference of m and 7 and 6.
    9·1 answer
  • Pankaj borrows rupees 57,000 to buy a used car and is charged the rate of interest 6% per annum. if the term of his borrowing is
    8·1 answer
  • Is y=6x-3 a function
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!