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3 years ago

Why 2+2=4 and not 2+2=22 ?

Mathematics

1 answer:

Lunna [17]3 years ago

8 0

2 + 2 = 4 because 4 is a sum of 1-digit numbers

2 + 2 ≠ 22 because 22 is the sum of 1-digit and 2-digit numbers

Step-by-step explanation:

Lets explain some important notes:

The 1-digit number consists of one digit, 4 is a one-digit number
The 2-digit number consists of two digits, ones digit and tens digit, 23 is a 2-digit number, the ones digit is 3 and the tens digit is 2, so its value is 20 + 3
The 3-digit number consists of ones digit, tens digit and the hundreds digit, 123 is a 3-digit number, the ones digit is 3, the tens digit is 2 and the hundreds digit is 1, so its value is 100 + 20 + 3

∵ 2 + 2 is the addition problem of two 1-digit numbers

∴ There sum will be 4 which is also 1-digit number

∴ 2 + 2 must be 4

∵ 22 is a two digit number

∴ Its value is 20 + 2 ⇒ not 2 + 2

∴ 2 + 2 can not be 22

2 + 2 = 4 because 4 is a sum of 1-digit numbers

2 + 2 ≠ 22 because 22 is the sum of 1-digit and 2-digit numbers

Learn more:

You can learn more about the place value of numbers in brainly.com/question/13174282

#LearnwithBrainly

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I don’t understand please help!

JulijaS [17]

-5/3 can be turned to a mixed number =-1 2/3
So can 18/11 = 1 7/11
10/4 = 2 2/4 or 2 1/2 simplified
And -3/3 as 1
This may make it easier to graph own the number line

5 0

2 years ago

What is the degree of differential equation? ?

Delicious77 [7]

Answer:

Degree = 1

Step-by-step explanation:

Given:

The differential equation is given as:

$\frac{d^2y}{dx^2}+(\frac{dy}{dx})^2+6y=0$

The given differential equation is of the order 2 as the derivative is done 2 times as evident from the first term of the differential equation.

The degree of a differential equation is the exponent of the term which is the order of the differential equation. The terms which represents the differential equation must satisfy the following points:

They must be free from fractional terms.

Shouldn't have derivatives in any fraction.

The highest order term shouldn't be exponential, logarithmic or trigonometric function.

The above differential equation doesn't involve any of the above conditions. The exponent to which the first term is raised is 1.

Therefore, the degree of the given differential equation is 1.

6 0

3 years ago

Suppose you need some fast cash until payday which is two weeks away. You decide to take out a payday loan for $400 with a fee o

MA_775_DIABLO [31]

The APR on the loan will be $13. The APR is found by the standard formula. It is calculated annually.

APR is an annualized cost indication for a loan that includes all costs.

Suppose there is an initial amount as P. The interest, or say charge on it, is applied annually as 'C' amount.

The given data in the problem is;

Loan payment = $400

Fees = $52

APR=?

The value of the APR is found as;

$APR = \dfrac{C}{P} \times 100 \\\\\ APR = \dfrac{52}{400} \times 100 \\\\\ APR = \$ \ 13$

Hence, the APR on the loan will be $13.

To learn more about the APR, refer to the link;

brainly.com/question/1361627

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8 0

2 years ago

Which of the following is an equations of the line passing through the points (-1,4) and (1,2)

maxonik [38]

Answer:

y = -1x + 3 or y = -x + 3 (**That is the last option which is D**)

Step-by-step explanation:

You need to do slope-intercept formula and the slope formula.

The Slope-Intercept Formula: y=mx+b

The Slope Formula: y2 - y1 / x2-x1

Your coordinates:

(-1,4) and (1,2)

2 - 4/1- (-1)

-2/2

Simplified is -1

Your "m" in the slope-intercept formula is -1

Formula: y=-1x + b

Now, you need to find the Y-Intercept which is the "b"

Using our slope-intercept formula, you need to plug in "x1" and "y1"

4 = -1(-1) + b

4 = 1 +b

4-1 = b

3 = b

So your equation is:

y = -1x + 3 or y = -x + 3

6 0

2 years ago

Solve this recurrence relation<br><br>an= -an-2<br>a1=1<br>a2=2

Lesechka [4]

Answer:

Give Full Question ...I think this question is incomplete

3 0

2 years ago