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astraxan [27]
2 years ago
9

Explain how 2 plus 2 Equals 4

Mathematics
2 answers:
adelina 88 [10]2 years ago
5 0
The definition of 2 is 1+1 and the definition of 4 is 1+1+1+1.
Now "+" is transitive such that the addition 1+1+1+1 can be broken down as 1+(1+1+1) or as (1+1)+(1+1) indifferently, which is 2+2 =4<span>
</span>
aivan3 [116]2 years ago
3 0
You have 2+2 in each 2 there are 1's so

2=(1+1) 2=(1+1) =4
4=1+1+1+1
2+2=4
think of 2's as 1's when adding did you know 2x2= 4 as well.
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A customer orders a round of coffee for her friends. If she orders two 12-ounce cups and one 16-ounce cup, she will owe the coff
astra-53 [7]

Answer:

D.$3.95

Step-by-step explanation:

Let us represent

12-ounce cup = x

16-ounce cup = y

A customer orders a round of coffee for her friends.

If she orders two 12-ounce cups and one 16-ounce cup, she will owe the coffee shop $10.75.

Hence:

2x + y = 10.75.....Equation 1

y = 10.75 - 2x

If she orders one 12-ounce cup and two 16-ounce cups, she will owe the coffee shop $11.30.

Hence:

x + 2y = 11.30.....Equation 2

We substitute 10.75 -2x for y in Equation 2

x + 2(10.75 - 2x) = 11.30

x + 21.50 - 4x = 11.30

Collect like terms

x - 4x = 11.30 - 21.50

-3x = -10.20

x = -10.20/-3

x = $3.40

Solving for y

y = 10.75 - 2x

y = 10.75 - 2($3.40)

y = 10.75 - 6.8

y = $3.95

Therefore , 16-ounce cup is represented by y, the cost for a 16-ounce cup of coffee is $3.95

Option D is correct

3 0
2 years ago
Which term does not belong with the other three? AB plane CDE FG HI ​
tatuchka [14]

Answer: your answer should be HI i hope it helps

5 0
3 years ago
Why can’t one of the names be PNM, or MPN for the plane? But MNP can? What’s the difference, and why?
Savatey [412]

The names PNM and MPN are perfectly valid. The order of the letters doesn't matter. In fact, there are 6 ways to name this plane if we just use the 3 letters. If we include "plane Z", then there are 7 total ways to name the plane.

For some reason, your teacher wants P to be the third letter as s/he mentioned MNP and NMP. But again, the order doesn't matter.

3 0
2 years ago
Avery works on commission as a car saleswomen.she sold a car today that cost 8,000$ and received a 400$ commission.What percent
Phantasy [73]
800 is 10% of 8,000. So half of 800 is 400. That makes the percent of her sale that is Avery's commision is 5%. 
4 0
3 years ago
There were 32 skaters at the rink on Friday. On Saturday, there were 27 skaters at the
shtirl [24]

Answer: 32 + 27 = 59

Step-by-step explanation:

5 0
3 years ago
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