How many meters is 100 square meters

How many meters is 100 square meters

Meter length unit square meter area unit 100 square meter = 10 meters * 10 meters

201 power of (- 2) + 200 power of (- 2) is equal to?

(-2)^201+(-2)^200=
(-2)*2^200+2^200=
(-2+1)*2^200=
-2^200

How to find the derivative of a function, we need to see what the derivative of a function is. Don't say f (x + Δ x) - f (x) / Δ X

It's not that simple. You can see that you are more powerful than Newton and Leibniz. They can't know what they see at a glance. They all need to calculate before they can know. Besides, some functions are not differentiable!
The faster way is to remember the derivative formula of elementary function. It's better to remember even the derivative of common function. In this way, it's faster to get the derivative relative to the difference quotient limit!

A simple method to calculate 145 times 102

145x102
=145x（100+2）
=145x100+145x2
=14500+290
=14790

A number is 0.6 less than 75% of 12.6. What is the solution of the equation

Let this number be X
x+0.6=12.6*75%
x+0.6=9.45
x=9.45-0.6
x=8.85
A: that's 8.85

Without changing the value of the fraction, the coefficients of the numerator and denominator of the fraction a + 1 / 4B divided by 4 / 3a-1 / 2B are changed into integers, and the result is

The denominator is 2,3,4 and the least common multiple is 12
So multiply by 12
=(12a+3b)/(16a-6b)

Calculate the following questions, can be simple to calculate
7 / 8 △ 7 + 3 / 8 △ 3.7 × 99 + 3.7 1.05 × (3-00 △ 6.3)
9 / 20 △ [1 / 2 × (2 / 5 + 4 / 5)]

1、0.2+1/5×3/7+4/7×20%
=0.2×(1+3/7+4/7)
=0.2×2
=0.4
2、[1-(1/4+3/8)]÷1/3
=[1-5/8]÷1/3
=3/8÷1/3
=9/8
3、5/9×3/8+4/9×0.375
=5/9×3/8+4/9×3/8
=3/8×(5/9+4/9)
=3/8
4、1/50+(1-2/5)÷3/20
=1/50+3/5÷3/20
=1/50+4
=4 and 1 / 50

If A-B > A, then B is () A. positive number B. negative number C. integer D. any rational number

B. A number minus a negative number is equal to the opposite of the negative number plus it

When k is a value, the solution of the equation 3x-2k / 5-2x + 5K / 6 = x-5k-9 / 12 is non positive

(3x-2k)/5-(2x+5k)/6=(x-5k-9)/12
51x=-51k-45
x=-k-45/51
∵ the solution is non positive, X ≤ 0
∴-k-45/51≤0
k≥-45/51

Mother bought 9.5kg apple, gave it to the salesman for 30 yuan, and recovered 7.20 yuan. How much did it cost to buy the apple? How much is the apple per kilogram?

30-7.20 = 22.8 (yuan) a: it costs 22.8 yuan to buy apples. 22.8 △ 9.5 = 2.4 (yuan) a: it costs 2.4 yuan per kilogram of apples