Answer:
13
Step-by-step explanation:
You just count by adding 3 every time
Well depending on the equation you look at both sides and eliminate everything from both using addition, subtraction, multiplication, and division.
Ex:
3c-4=7 first add the 4 because you use the opposite type of operation so you add it to 7 which gives you:
3c=11 next you have to divide to get it alone
3c/3=11/3
which gives you
c= 3.66666666667
Answer:
Step-by-step explanation:
<u>Ratio of corresponding sides of similar triangles are:</u>
<u>Substitute values</u>
- (9+3)/3 = 12/x
- 4 = 12/x
- x = 12/4
- x = 3
It might be √53 because they are 7 squares away from each other ( I have the same question ) but Im not 100% sure..
First brand = A, second brand = B.
A + B = 249ml
9% A + 14% B = 13% 249ml
B = 249ml - A
9% A + 14% (249ml - A) = 13% 249ml
9A + 14 (249ml - A) = 13 * 249ml
9A + 3486ml - 14A = 3237ml
5A = 249ml
A = 49,8ml
<span>B = 249ml - A = 199,2ml
</span>
Answer: He should use 49,8ml of first brand and 199,2ml of second brand.
Also note: <span>That's an </span>approximation,<span> because </span>the volumes are not strictly additive<span>. For example: mixing 50ml pure ethanol with 50ml water will give you about 95ml of mixture. To get an accurate answer, you'd have to </span>measure<span> the volume of the final mixture and then divide your total alcohol content by </span>that<span>.</span>
