Answer:
You need to add 10 °C of heat.
Step-by-step explanation:
To find the quantity of heat in Celsius first we need to convert the units:
212 °F to °C (boiling point):
(1)
194 °F to °C:
(2)
Now we can find the quantity of heat that must be added by substrating equation (2) from (1):

Therefore, you need to add 10 °C of heat to boil water that is 90 °C.
I hope it helps you!
Answer: check explanation
Step-by-step explanation:
Multiply both sides of equation by x(x+a)
This will get rid of those nasty fractions...cuz who likes them?
Anyways,
Now you should I think get
x(x+a)+a(ax)=a
I am pretty positive that you just distribute and solve.
You may have to factor and have to put everything as an equation set to equal=0
you try it and experiment. Sometimes you just have to try to think algebraically and creatively. Don’t get frustrated just work with it. Good luck!
Answer:
900
Step-by-step explanation:
6+24=30
30^2=900
2x+3(2x-4y)+8y-2
2x+6x-12y+8y-2
8x-12y+8y-2
8x-4y-2
Answer:

Step-by-step explanation:
Given that 9213x5 is a multiple of 9 and we need to find out the value of x .So the rule for divisibility for 9 is :-
<u>Test </u><u>for </u><u>Divisibility</u><u> </u><u>by </u><u>9</u><u> </u><u>:</u><u>-</u>
A number is divisible by 9 if the sum of the digits is divisible by 9 .
Here the sum of the digits is :-
Now here to make 20 +x divisible by 9 is should be equal to 27 since 27 is the nearest smallest multiple of 9 .