Answer:
35 + 37
Step-by-step explanation:
if you try any other number like: 37 + 39 = 76 that doesn't work well because its higher that 75.
Answer:
80 hours
Step-by-step explanation:
let d represent doug, let l represent laura
first, set up a system of equations representing the problem:
since doug spent 10 less than twice the hours laura did, and we know that the total amount of hours they spent together is 230:
l=2d+10
d+l=230
then solve:
*first i rearranged the equations so i can solve this system of equations using elimination method*
l-2d=10
l+d=230
*subtract*
3d=240
d=80
so, doug spent 80 hours in the lab
Answer:
Both are rational.
Step-by-step explanation:
As a rational number can be written in the form p/q where p,q are co-prime integers, let a=p1/q1 b=p2/q2.
And we know the product of two integers is an integer
p1q2, p2q1 are integers. And the sum or difference of two integers is rational, rather being specific, it is an integer.
Thus a+b and a-b is rational.
Answer:
<em>D</em><em>)</em><em> </em><em>hand</em><em> </em><em>and</em><em> </em><em>arm</em><em> </em><em>extended </em><em>upward</em><em> </em><em>.</em><em>.</em><em>.</em>
<em>is</em><em> </em><em>your</em><em> </em><em>answer</em><em> </em>
<em>d</em><em>)</em><em> </em><em>hand</em><em> </em><em>and</em><em> </em><em>arm</em><em> </em><em>extended</em><em> </em><em>upward</em><em>.</em><em>.</em><em>.</em>
