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
mote1985 [20]
3 years ago
11

What is the sum of the counting numbers 1 - 40

Mathematics
2 answers:
AVprozaik [17]3 years ago
5 0
Simply it as follows:

1 + 39 = 40
2 + 38 = 40 etc

18 + 22 = 40
19 + 21 = 40

There are 19 of these plus 40 itself . . .therefore 20 of them

20 x 40 = 800

And finally the last number not used, 20

Therefore 800 + 20 = 820
natita [175]3 years ago
5 0
820. there  is a shortcut which can be used when adding consecutive numbers regardless of how big it is. it can also be done manually though
You might be interested in
Jared places five cards that are labeled 1 to 5 face down on the table and mixes them up.
ankoles [38]

Answer: 2/5

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
C
yanalaym [24]

Answer:

2x² - 6x

Step-by-step explanation:

(3x² - 4x + 8) + (- x² - 2x - 8) ← remove both parenthesis

= 3x² - 4x + 8 - x² - 2x - 8 ← collect like terms

= 2x² - 6x

7 0
3 years ago
Tim bought 7 new baseball trading cards to add to his collection. The next day his dog ate half of his collection. There are now
suter [353]
81, (x+7)/2 = 44,88-7=x

3 0
3 years ago
Read 2 more answers
3. In the expression 362 + 6, what will be the place value of the first digit of the quotient?
Hunter-Best [27]

Answer:

B. It will be the tens place because 6 is greater than 3.

Step-by-step explanation:

Since the question said "quotient," then I believe we have 362 ÷ 6 and not "362 + 6."

If we work on the quotient we have

60\frac{1}{3}

Obviously, the first digit in the quotient is 6 and it takes the place of tens.

Looking at the options, option B fits the most because 6 is actually greater than 3.

Therefore, the answer is option B, It will be the tens place because 6 is greater than 3.

4 0
2 years ago
142 students are going on a field trip. There will be six drivers, and two different types of vehicles. A bus can hold 51 people
otez555 [7]

Answer: 2 buses and 4 vans would be needed

Step-by-step explanation:

Let x represent the number of buses that would be needed.

Let y represent the number of vans that would be needed.

There will be six drivers, and two different types of vehicles. This means that

x + y = 6

142 students are going on a field trip. A bus can hold 51 people while a van can hold 10. This means that

51x + 10y = 142 - - - - - - - - - - - 1

Substituting x = 6 - y into equation 1, it becomes

51(6 - y) + 10y = 142

306 - 51y + 10y = 142

- 51y + 10y = 142 - 306

- 41y = - 164

y = - 164/ - 41

y = 4

x = 6 - y = 6 - 4

x = 2

8 0
3 years ago
Other questions:
  • Write an equivalent expression for 13+9(x-3)
    15·1 answer
  • 83 POINTS !!! I NEED HELP WITH THIS PLZZ DONT SCAM ME I NEED HELP WITH THIS!!! PLZZ HELP ME OUT
    14·1 answer
  • A strawberry farmer needs to water a strawberry patch of 1500 square yards is in the shape of a sector of a circle with a radius
    8·1 answer
  • What is 23.45 less than 56.004?
    9·1 answer
  • Write the following expression as a function of a positive acute angle. Use "+" to indicate a positive value and "-" to indicate
    12·2 answers
  • -9=-3(x+2)+5x what does x equal
    13·2 answers
  • The number of people who voted for the Green Party in an election was 1500
    13·1 answer
  • 10 yd<br> 5 yd<br> What’s the surface area of the cylinder
    9·1 answer
  • Can someone help me please?
    5·1 answer
  • Find the indicated side of the
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!