5x-2y=42
3x+4y=20
2x+4y=48
4x+2y=66-5x-2y=42
3x+4y=20
multiply 2 to the first one
10x - 4y = 84
3x + 4y = 20
---------------------Add
13x = 104
x = 104/13 = 8
Substitute into either equations to fi
Homework help.
please help
Domain of sqrt( 19+ x/(9-x))-We need to find the domain of
....__________
.../19 + x/(9-x)
\/
first we know 9-x is not equal to zero
because of the denominator so x is no
Kris works at a doll factory. She earns $75/day, and if she makes more than 15 dolls in one day, she receives a bonus. For each doll made after the 15th doll, she will receive an extra 12% of her dail
Whats the rule for it again?
a^-1/n = __________
a^-m/n= __________-a^-1/n = 1/(nth root of a)
a^-m/n= 1/(nth root of a^m)
i.e. 3^-2/3=1/(cube root of 9, as 3^2=9)-To make negative indices positive,
Please solve this problem and please explain to me clearly how did you do it so I can learn how to solve this things..
PROBLEM
The sum of the reciprocals of 2 numbers is 9. Twice the reciprocal of th
The question is: For any integer, if n > m > 0
Evaluate 1/(m(m+1)) + 1/((m+1)(m+2)) + ... + 1/((n-1)n) + 1/(n(n+1))
Ive gotten as far as rewriting it as (m-1)!/(m+1)! from m to n, but besides that Im
That would be great if you could show all the steps. Thanks! :D-10^(2x) = (10^x)²
Let t = 10^x so t > 0 because 10^x is always greater than 0
t² + 3t - 10 = 0
(t + 5)(t - 2) = 0
t = -5 is not the an
Im stuck on this problem. I dont want it solved for me, but, I dont know where to go further with this.GIVENdu/dt=e^(2u+7t)u(0)=5
REQUIREDu=?
SOLUTIONto start, I integrated both sidesu=(1/2)e^(7t+2u)+
81x^2-90x+25-A² + 2AB + B² = (A + B)²
so
81x² - 90x + 25 =
(9x)² + 2*9x*(-5) + (-5)² =
(9x + (-5))² =
(9x -5)²-completing the square or use [-b (+-)underroot(b^2 - 4ac)]/2a
in this case determin
The multiple integral is a type of definite integral extended to functions of more than one real variable, for example, ƒ(x, y) or ƒ(x, y, z). Integrals of a function of two variables over a region in
How many committees consisting of 3 female and 5 male students can be selected from a group of 5 female and 8 male students?-This uses combinations.
Out of 5 females you will choose 3. Out of 8 males
an arithmetic progression (AP) or arithmetic sequence is a sequence of numbers such that the difference of any two successive members of the sequence is a constant. For instance, the sequence 3, 5, 7,
It isnt f(x) = -25x(cos^4 (sin(5x))(sin(sin(5x)))(cos(5x))-I almost get the same answer except i do not get -25x. I get -25cos^4 (sin(5x)sin(sin(5x))cos(5x)
Please explain how to get the answer. Thanks! :)-1024= 4*256=
4=2*2
256= 4*64
4=2*2
64=8*8
8=2*2*2
8=2*2*2
1024= 2*2*2*2*2*2*2*2*2*2= 2^10
√1024=2^5=2*2*2*2*2 or 32
