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
Helen [10]
3 years ago
7

2 + 2 =? i need help

Mathematics
2 answers:
Mama L [17]3 years ago
6 0

Answer:

4

Step-by-step explanation:

1+1=2 so then 2+2 is doubled 1+1 so the answer is 4

OLga [1]3 years ago
5 0

Answer:

4

Step-by-step explanation:

Think of it this way. You have 2 sets of 2.

I I (This represents two)

I I (This represents the other two)

When you combine these, you get:

I I I I

If you count the tally marks, your answer is 4.

You might be interested in
How many lengths of pipe 2 1/3 ft long can be cut from a pipe that is 63 ft long? Assume there is no kerf.
Zinaida [17]
The answer is 27ft long
7 0
2 years ago
Can someone please help me​
astra-53 [7]

Answer:

square 20 has 44 green squares

square 21 has 45 green squares

Step-by-step explanation:

To solve the problem, we need to observe the cases, and determine/define a rule for each case (odd number of sides, or even number of sides).

For square one, we note that the centre square is shared by two diagonals, so we saved one square from the two diagonals.

The side length is 3 for square 1, 4 for square 2, and so on.

Let

n= square number (1, 2,3...)

L = side length (3,4,5...)

G1(n) = function that gives the number of green squares for square n, n=odd

G2(n) = function that gives the number of green squares for square n, n=even

side length, L=n+2   ................(1)

G1(n) = twice the side length less one, as discussed above

G1(n) = 2L-1       now substitute L=n+2

G1(n) = 2(n+2) -1    simplify

G1(n) = 2n + 3

Check:

for n=1, square 1 has 2*1+3 = 5 green squares ... checks

for n=3, square 3 has 2*3+3 = 9... checks

for n=5, square 5 has 2*5+3 = 13 ....checks

For even squares, it is even easier, because

G2(n) = 2L = 2(n+2)

check:

for n=2, square 2 has 2(2+2) = 8 green squares........checks

for n=4, square 4 has 2(4+2) = 12 green squares........checks.

Fincally, we apply our formula to n=20 and n=21

square 20 : G2(20) = 2(n+2) = 2(20+2) = 44 green quars

square 21 : G1(21) = 2n+3 = 2(21)+3 = 45 green squares

5 0
2 years ago
pleas help I need help with these two! right answers only please asap! will give brainliest to person who explains !
ladessa [460]
For question 4: you have to do (y2 - y1) divided by (x2 - x1) to get the rise over run...

5-2
——. = 3/4
11 - 7


For question 5: input the values of x,y and the gradient into the equation of a line.....

y = mx+ c

-8 = 3(-2) + c

-8 = -6 + c

-2 = c

therefore:

y = 3x - 2

Hope this helps! Any questions let me know :)


7 0
2 years ago
Read 2 more answers
$12.50 for 5 ounces
iragen [17]

Answer:

45 copies per minute

Look at drawing for an explanation

6 0
3 years ago
Solve.<br> 3x + 12 = 48<br> 
Sergeu [11.5K]

Answer:

x=12

Step-by-step explanation:

3x+12=48

3x=48-12

3x=36

x=12

7 0
2 years ago
Other questions:
  • determine whether or not the two questions below have the same solution period and two or more complete sentences, explain your
    9·1 answer
  • Write two fractions that have the same value as 1/2.Explain how you know they have the same value
    6·1 answer
  • Can anyone help check if my calculation is correct or wrong?
    7·2 answers
  • Which is greater? 3/5, 33/50, 303/500, 3003/5000, 30003/50000
    7·1 answer
  • I need answer Immediately pls!!!!!!
    8·1 answer
  • Which phrase represents the meaning of the symbol Less-than?
    9·2 answers
  • CORRECT ANSWER GETS BRAINLYEST Drag each set of coordinates to the correct location on the table. Not all sets of coordinates wi
    9·2 answers
  • For spirit week, a high school club is making wristbands from paper. The wristbands are designed to have a height of 1.8 centime
    11·1 answer
  • The morning temperature is -15° by the afternoon the temperature rises by 20° right in addition expression for the afternoon tem
    14·1 answer
  • Find the equation of the linear function represented by the table y0 5 10 15 x 1 2 3 4​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!