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
A business’s assets are valued at $600,000, and the value depreciates 20% per year. Using the formula V(t) = V0(b)t, what is V0,
Nana76 [90]
The formula is
V (t)=V0(b)^t
V (t) the value of the assets after 5 (t) years ?
V0 current value of assets 600000
B=1-0.20=0.8
T 5 years

So the value of assets after 5 years is
V (5)=600,000×0.8^(5)=196,608
7 0
3 years ago
What is 8 thousands 15 hundreds 15 Tens 18 ones written in standard form ?
ryzh [129]
I'm not sure what you are trying to convey, but you cannot have more than one digit, so this is imposible
8 0
3 years ago
Read 2 more answers
Simplify expression (-9)
Anarel [89]

Answer:

-9

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Find the value of x that will make AB<br> А<br> 9x - 40<br> В.<br> 3x + 20<br> x = [?]
Charra [1.4K]

Answer:

x = 10

Step-by-step explanation:

∵ Both angle ∠A and are corresponding angles.

∠A = ∠B

9x - 40 = 3x + 20

9x = 3x + 20 + 40

9x - 3x = 20 + 40

6x = 60

x = 60/6

x = 10

∴ x = [10]

7 0
2 years ago
Help please !! Anything would be greatly appreciated thank you
kirill115 [55]

Boleh translate in Malay?

6 0
3 years ago
Other questions:
  • Find the slope of (4,7), (-6,4)​
    15·2 answers
  • Harry bought a sweater that only cost $5 when it normally costs $35. What percent was the discount? Provide an explanation. A. 1
    7·2 answers
  • A figure is reflected over the y-axis. Which of the following are true? The pre-image and image are congruent. The y-coordinates
    6·1 answer
  • Which number is a factor of 20, but not a multiple of 2? 12, 5, 10 or 4?
    6·2 answers
  • -4 = 8m please show step by step
    9·2 answers
  • A2 + b2 = c2<br> 12 ft<br> 16 ft<br> O 28 feet<br> O 24 feet<br> O 20 feet<br> O 14 feet
    11·1 answer
  • Which of the following could be the side measures of a right triangle?
    7·2 answers
  • I need help due in a Hour
    5·1 answer
  • What's -8 = x+11/-2 with steps
    14·1 answer
  • I know its easy but i forgot how to do this pls heeeelp me
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!