Consider the suggested option:
1) if in 20 gr. of 50% solution given, then pure salt in this mix is 0.5*20=10 gr., and pure water is 0.5*20=10 gr.
2) after Maya added 5 gr. pure salt is 10+5=15 gr. Total mass of mix is 15(pure salt)+10(pure water)=25 gr.
3) new solution is 15/25=0.6 or 60%.
Answer: 25 gr. of 60% salt solution.
The area of the parallelogram is 26 × 10 = 260 cm^2 ;
The area of equilateral triangle is 0.4 cm^2 ;
<span>The </span>number<span> of triangles can Devi fit on the gris is 260 ÷ 0.4 = 260 × ( 10 / 4 ) = 2600 / 4 = 650 ;</span>
Answer:
Step-by-step explanation:
Mn
Answer:
He has 7
Step-by-step explanation:
5 plus 2 equals 7
Answer:
x=-1
Step-by-step explanation:
I'm weird and love these types of problems.
Ok first off we need to get x alone. To do that we need to first get rid of the 7.
We can do that by adding it because you have to use the opposite operation to get rid of it.
5x - 7 (+7) = -12 (+7)
See if you add -7 + 7 you get 0 which is why you have to use the opposite.
5x = -5
To get x alone you have to divide 5 because 5 is being multiplied by x.
5x(/5) = -5(/5)
x= -1
So x= -1
If you ever need more help, don't be afraid to reach out. I hope that helps!
