Question
7841X9
204
likes1018 views
Answer to a math question 7841X9
Velda
4.5110 Answers
Mutliply the bold numbers $1\times 9=9$
$\frac{\begin{matrix}\:\:&7&8&4&\bold{1}\\\times &\:\:&\:\:&\:\:&\bold{9}\end{matrix}}{\begin{matrix}\:\:&\:\:&\:\:&\:\:&9\end{matrix}}$
Mutliply the bold numbers $4\times 9=36$
$\frac{\begin{matrix}\:\:&\:\:&3&\:\:&\:\:\\\:\:&7&8&\bold{4}&1\\\times &\:\:&\:\:&\:\:&\bold{9}\end{matrix}}{\begin{matrix}\:\:&\:\:&\:\:&6&9\end{matrix}}$
Add the carried number to the multiplication $3+8\times 9=75$
$\frac{\begin{matrix}\:\:&7&\bold{3}&\:\:&\:\:\\\:\:&7&\bold{8}&4&1\\\times &\:\:&\:\:&\:\:&\bold{9}\end{matrix}}{\begin{matrix}\:\:&\:\:&5&6&9\end{matrix}}$
Add the carried number to the multiplication $7+7\times 9=70$
$\frac{\begin{matrix}\:\:&7&\bold{7}&3&\:\:&\:\:\\\:\:&\:\:&\bold{7}&8&4&1\\\times &\:\:&\:\:&\:\:&\:\:&\bold{9}\end{matrix}}{\begin{matrix}\:\:&\:\:&0&5&6&9\end{matrix}}$
Add the carried digit, $7$ , to the result
$\frac{\begin{matrix}\:\:&7&7&3&\:\:&\:\:\\\:\:&\:\:&7&8&4&1\\\times &\:\:&\:\:&\:\:&\:\:&9\end{matrix}}{\begin{matrix}\:\:&7&0&5&6&9\end{matrix}}$
Line up the numbers
$\begin{matrix}\:\:&7&8&4&1\\\times &\:\:&\:\:&\:\:&9\end{matrix}$
$=70569$
Frequently asked questions (FAQs)
Math question: Find the absolute extrema of the function f(x) = x^3 - 3x^2 - 9x + 1 on the interval [-2, 3].
+
What is the derivative of f(g(h(x))), where f(x), g(x), and h(x) are differentiable functions?
+
What is the period of the cosine function f(x) = cos(x)? Provide your answer in terms of π.
+
New questions in Mathematics