\(\dfrac{36^6+6^4}{36^5+36}\)
\(=\dfrac{36^6+\left(6^2\right)^2}{36\cdot\left(36^4+1\right)}\)
\(=\dfrac{36^6+36^2}{36\cdot\left(36^4+1\right)}\)
\(=\dfrac{36^2\cdot\left(36^4+1\right)}{36\cdot\left(36^4+1\right)}\)
\(=36\)
\(\dfrac{1}{4}\)+\(\dfrac{8}{9}\)≤\(\dfrac{x}{36}\)<1-(\(\dfrac{3}{8}\)-\(\dfrac{5}{6}\))
Thực hiện phép tính hợp lý (nếu có thể) :
a) (\(31\dfrac{6}{13}\) + \(5\dfrac{9}{41}\) ) - \(36\dfrac{6}{13}\)
b) \(\dfrac{5}{3}\) +( \(\dfrac{-2}{7}\) ) - (-1,2)
c) 0,25 + \(\dfrac{3}{5}\) - (\(\dfrac{1}{8}\) - \(\dfrac{2}{5}\) + \(1\dfrac{1}{4}\) )
Tìm x biết:
a, \(\dfrac{x^2}{6}\)= \(\dfrac{36}{x}\)
b, \(\dfrac{x}{3}\)=\(\dfrac{y}{7}\)=\(\dfrac{z}{2}\)
Tính:
1) 3/4 - [(-3/5) - (1/12 +2/4)]
2) -6/7 . 21/12
3) (-5) . -6/20
4) -31/36 : 37/-72
5) (-5/17) : (-15)
\(\dfrac{x}{5}=\dfrac{y}{4}=\dfrac{z}{3}\) và x+y+z=36
In the figure below, x = Câu 2 Find the measure of angle J if \widehat{K}=29^o K =29 o and angle J and K are supplementary. Answer: \widehat{J}= J = ^o o . Câu 3 In the figure below, x = Câu 4 In the figure below, x = Câu 5 Solve: |2x-3|-4=3∣2x−3∣−4=3, where xx is a negative number. Answer: x=x= Câu 6 Calculate: 9+|-6|:1^2 =9+∣−6∣:1 2 = Câu 7 Compare: \dfrac{36}{27} 27 36 \dfrac{4}{3} 3 4 Câu 8 Find the negative number yy such that |y+\dfrac{7}{2}|-\dfrac{1}{2}=4∣y+ 2 7 ∣− 2 1 =4. Answer: y=y= Câu 9 Find xx such that \dfrac{32}{2^x}=2 2 x 32 =2. Answer: x=x= Câu 10 Find nn such that \dfrac{(-4)^n}{64}=-16 64 (−4) n =−16. Answer: n=n= Cần gấp nhé
tính
A) \(\sqrt{121}-\sqrt{\dfrac{1}{4}}+\sqrt{\dfrac{25}{36}}\)
b) \(\dfrac{3}{4}.\dfrac{-5}{7}-\dfrac{3}{4}.\dfrac{2}{7}\)
Thực hiện phép tính
a) 5/6 + |-2/3
b) 3-6.|3/4-1/4|
c) √25.√36-4.√49
d) 16và 5/8 .1/7 -2 và 5/8.1/7
