It takes a cook 3 minutes 45 se to make 3 sandwiches x and 3 salads y. it takes him 8 min 30 sec to make 6 sandwiches x and 8 salads y. How long does it take to make each sandwich x ?
A 30 sec
B 35 sec
C 45 sec
D 60 sec
\(3x+3y=225sec\) [ * 8
\(6x+8y=510sec\) [ * 3
\(24x+24y=1800sec\)
\(18x+24y=1530sec\)
\(1800sec-24x=1530sec-18x\)
\(-6x=-270sec\)
\(x=45sec\)
The cook needs to make a sandwich 45 sec.
!
what is 4/3x?
\( 4/3x =\frac{4}{3x}\)
or
\(4/3x=\frac{4}{3}x\)
This is not clearly fomulated. Place staples. Then there is what you mean.
\(4/(3x)=\frac{4}{3x} \)
\((4/3)x =\frac{4}{3}x \)
What is linear equation?
In a linear equation the variable x occurs exclusively in the first power.
what is 24 times 37 and 1/4 ?
\(24\times 37+\frac{1}{4}=\frac{24\times 37\times 4+1}{4}=\frac {3553}{4}\)
\(=888\frac{1}{4}\)
A student simplified the expression 9^2 over 81^2 as 1 over 8. Do you agree with this student? Explain.
\(\frac{9^2}{81^2}=(\frac{9}{81})^2=(\frac{1}{9})^2=\frac{1}{81}\)
I do not agree with this student.
What is the equation of the line with an x-intercept of -1 and a y-intercept of 2?
y = 2x - 2
y = - 2x + 2
y = 2x + 2
Simply imagine the graphic.
3XExponent3*X*(-5)XExponent6
\(3x^3\times x\times (-5)\times x^6\)
\(=-15x^{10}\)
Man multipliziert Potenzen mit gleicher Basis (hier x Exponent n), indem man ihre Exponenten (3+1+6) addiert.
f(x)=5^2+7, f(x) =8-3x
\(f(x)=5^2+7=32\)
[ Equilibrium
\(f(x)=8-3x\)
\(32=8- {\color{red}3} x\) [+3x; -32 on both sides
\({\color{red}3}x=8-32=-24\) [ / 3 on both sides
\(x=-8\)
Greeting Omi67 !
x = −7 ± 49 − 32 4
\(x=-7-324 \pm49\)
\(x_1=-282\)
\(x_2=380\)
what is 1000 49095
\(100 \ 049 \ 095=\)\(5\times 2.000 981 9 \times 10^7\) !
!
Greeting Omi67 !