is the most likely reason that many anclent Egyptians lived in houses mud?

A number, \( w \), truncated to 2 d.p. is 6.83 rite an inequality to show the lower and upper bounds of \( w \).

a \( -7 x=14 \).

Solve \( u^{2}=81 \), where \( u \) is a real number. Simplify your answer as much as possible. If there is more than one solution, separate them with commas. If there is no solution, click on "No solution". \( u=\square \) \( u=\square \)

\( \int \frac { x ^ { 4 } + 7 x ^ { 3 } + 45 x ^ { 2 } + 51 x + 23 } { 4 x ^ { 3 } + 13 x ^ { 2 } + 68 x - 60 } \)

Exercice 09: Raisonnementres que, montrer 1. Soient \( x, y \) et \( z \) des nombres rés tel que que \( x+y+z>1 \Rightarrow x>\frac{1}{3} \) ou \( y>\frac{1}{3} \) ou \( z>\frac{1}{3} \) 2. Montrer que: \( (\forall n \in \mathbb{N}) ; \frac{6 n+1}{4 n+2} \notin \mathbb{N} \) 3. Soit \( x ; y \in \mathbb{Q}^{+} \)tel que \( x^{3} y+x y^{3}=8 \), montrer par l'absurde que \( x \neq y \) 4. Montrer que \( \sqrt{2} \notin \mathbb{Q} \). (indication \( \sqrt{2} \in \mathbb{Q} \Rightarrow \sqrt{2}= \) \( \frac{a}{b} ; a \in Z^{*}, b \in N \) et \( p g c d(a ; b)=1 \) )