The answer will be B. X= 2.57m. Hope it help!
Answer:
Max exercises 13 hours a week, and Sasha 7.
Step-by-step explanation:
To find the number of hours each of them exercises during the week, we solve the system of equations.
In the second equation:
Replacing in the first equation:
So Sasha exercises 7 hours per week.
Max:
Max exercises 13 hours a week.
156 minutes.
To find this, remember that an hour has sixty minutes. With this information, it is also given that there are two hours, thus meaning that we have to multiply sixty by two. This will give you 120. Next, you need to figure out the 3/5's portion of an hour. To find 1/5 of an hour, simply divide sixty by five. With that, you get the answer of 12. But because it says 3/5, you need to multiply 12 by 3, giving you 36. Finally, you add 36 to 120 to get the final answer of 156.
Hope this helps!
Answer:
374.392
Step-by-step explanation:
3*100=300
4*10=40
7*1=7
3*(1/10)=0.3
9*(1/100)=0.09
2*(1/1000)=0.002
Put them together and you get 347.392
Especially if we're to present the answers to 2 decimal places, we'd gues that the roots of this polynomial are not "nice."
My suggestion is that we use the quadratic formula to find the roots, and then write the associated factors.
In 3x^2 +x-5=0, a=3, b=1 and c= -5. Thus, the roots are
-1 plus or minus √(1^2 - 4(3)(-5) )
x = --------------------------------------------------
2(3)
or:
-1 plus or minus √61 -1 plus or minus 7.81
x = ----------------------------------- = ---------------------------------
6 6
Then one root is 6.81/6, or approx. 1.14, and the other is
-8.81/6, or approx. -1.47.
The solution set is then {-1.47, 1.14}.
