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
mamaluj [8]
2 years ago
10

Find 1*2+2*3+3*4+...100*101

Mathematics
1 answer:
Rzqust [24]2 years ago
5 0

Answer:

What kind of mathematics is this?

You might be interested in
Manuel has $600 in a savings account at the beginning of the summer. He wants to have at least $300 in the account at the end of
stiks02 [169]
The answer to this question is 600-28w > 300. This inequality can be described as $600 (money in the savings account) subtracted by $28w (withdrawal of $28 a week for food) should be greater than $300. It proves that the money will not drop below $300.
6 0
3 years ago
Read 2 more answers
A parabola can be drawn given a focus of (5, -3) and a directrix of y=1. Write the equation of the parabola in any form.
Anna71 [15]

Answer:

(x²-10x+33)/(-8) = y

Step-by-step explanation:

The distance between any point on a parabola from both its focus and directrix are the same.

Let's say we have a point (x,y) on the parabola. We can then say that using the distance formula,

\sqrt{(x-5)^2+(y-(-3))^2}is the distance between (x,y) and the focus. Similarly, the distance between (x,y) and the directrix is |y-1| (I use absolute value here because distance is always positive). We can find this equation by taking the shortest distance from the point to the line. Because the closest point to the line will be the same x value as the point itself, the distance is simply the distance between the y value of the point and the y value of the directrix.

Equating the two equations given, we have

\sqrt{(x-5)^2+(y-(-3))^2} = |y-1|

square both sides to get

(x-5)²+(y+3)²=(y-1)²

expand the y components

(x-5)² + y²+6y+9 = y²-2y+1

subtract y²+6y+9 from both sides

(x-5)² = -8y - 8

expand the x components

x²-10x+25 = -8y - 8

add 8 to both sides to isolate the -8y

x²-10x+33 = -8y

divide both sides by -8 to isolate y

(x²-10x+33)/(-8) = y

6 0
2 years ago
Which equation gives the number of 1/4 centimeter that are in 7/8 centimeter?
lesya692 [45]
The answer is B.

remember to use the reciprocal when dividing with fractions
5 0
3 years ago
Read 2 more answers
PLEASE ANSWER
gladu [14]

Answer:

420 + 15 = 435

360 + 45 = 405

435 - 405 = 30.

30 minutes less sunlight

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
1) Find 0.2+(-0.6).<br> » Model the expression on the number line
Temka [501]

Answer:

-0.4

Step-by-step explanation:

If using a number line, start at 0.2 and go backwards 0.6 to get to -0.4

5 0
3 years ago
Other questions:
  • Can someone help me for this question?
    14·1 answer
  • The volume of the sphere is 500/3 pie cubic units . what is the value of X?
    6·1 answer
  • Can someone help with this?
    7·1 answer
  • The original price of a mountain bike was reduced by $125.
    7·2 answers
  • Please hurry i need this fast
    15·1 answer
  • Help me out please!!!!
    6·1 answer
  • Tawana has $325.54 in her checking account. She must keep a balance of at least $300 to avoid a fee. She plans to write a check
    9·2 answers
  • Don’t need to explain, but if you want to then go ahead!
    11·2 answers
  • Suppose the length of the pool in Example 1 is
    8·1 answer
  • Which graph below shows the solution set for the inequality b ≥ 5?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!