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
FrozenT [24]
3 years ago
13

The first square number is 1, and the sum of the first 20 square numbers is 2870.

Mathematics
1 answer:
musickatia [10]3 years ago
7 0
21²=21×21
21×21=441

2,870+441=3,221
You might be interested in
This if for my study guide and I'm so confused, can someone help me with this one?
user100 [1]

Answer:

The form y=mx+b means slope m and y-intercept b; similarly, the form y=mx+a means slope m and y-intercept a.

The slope-intercept form of the equation of a line is a useful form for graphing as well as for understanding the relationship between x and y. In this lesson, learn how the slope-intercept form helps you understand the equation of a line.

The equation of a line can be written many different ways, and each of these ways is valid. The slope-intercept form of a line is a way of writing the equation of a line so that the slope of the line and the y-intercept are easily identifiable. The slope is the steepness of the line, and the y-intercept is the place the line crosses the y-axis.

A line is a relationship between two things - but not just any relationship. When you have a linear relationship, one that can be graphed as a line, there is one big condition:

No matter how much you have of a thing (often called x), if you add one more you always get a consistent amount more of the other thing (often called y).

6 0
3 years ago
Identify terms, coefficients, factors, and the constant: 5(2x + 4) + 3x
KATRIN_1 [288]

Answer:

Terms:

<em>5, 2x, 4, 3x</em>

Coefficients:

<em>2 in 2x, and 3 in 3x</em>

Constants:

<em>5 and 4</em>

Factors:

<em>5, 2x, and 4</em>

Step-by-step explanation:

For terms, all of them are terms because they are all in the expression.

For coefficients, coefficients are ones that have a variable (think of it as a <em>copilot</em> kind of thing).

For factors, factors are terms that are multiplied together together to get a <em>product</em> (the answer).

For constants, these are terms that stand alone, by themselves. They are not attached to variables.

The answer is <em>13x + 20, </em>too, just in case you needed that.

Have a great day and hope this helps!

5 0
3 years ago
Read 2 more answers
A conjecture is an educated guess
Kitty [74]

Answer:

the angle abc is 180 degrees

5 0
3 years ago
Read 2 more answers
How do I convert Miles to feet and feet to mile i was sick for the lesson so i dont know how to do it
Juliette [100K]
There are 5280 feet in a mile, if thats what youre asking..?
idk if this was helpful or not, sorry :/
4 0
3 years ago
Read 2 more answers
Please answer quickly I only have 5 mins lol. The ratio of students polled in 6th grade who prefer lemonade to Iced tea is 8:4,
zhannawk [14.2K]

Answer:

Let total students who prefer lemonade is 2a and who prefer ice tea is a.

Students in 6th grade=39

2a+a=39

3a=39

a=39/3

a=13

students who prefer lemonate is 13

and those who prefer ice tea is 2a=26

4 0
3 years ago
Other questions:
  • a sum of money is shared among three brothers. the eldest receives 7/13 of it and the next receives 2/3 of the remainder. if the
    12·2 answers
  • 4.2a - 3.5b - (1.8a + 2.7b - 1.9)
    10·1 answer
  • There are 9 different colors of paint to choose from. Out of the 9 colors, how many ways can 4 different colors be chosen?
    15·2 answers
  • What’s the answer to this questions ?
    15·1 answer
  • Write the equation of a line that passes through the points (6,2) and (-4,-3)
    14·1 answer
  • 80 is 10 times as much as 1/10 of what
    5·1 answer
  • Please explain this problem :
    10·1 answer
  • Is the graph increasing, decreasing, or constant?
    13·1 answer
  • Give an example of a negative integer then give its opposite
    10·1 answer
  • Selena has been working at her first post-college job for almost a year when her company gives her a raise, resulting in a paych
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!