Answer:
Step-by-step explanation:
The formula of a circumference of a circle:
<em>r</em> - radius
The formula of an area of a circle:
<em>r</em> - radius
We have C = 176cm. Substitute to the formula and calculate the radius <em>r</em>:
Calculate the area:
According to the moderator, I should take 
. You can do it like that. In my opinion, my solution is correct.
Answer:
700 divided by 17 14 divided by 17
not sure about the middle one
answer: 102
Step-by-step explanation:
I think answer should be 8 please give me brainlest let me know if it’s correct or not okay thanks bye
Answer:
a) 6°C
b) upward
Step-by-step explanation:
a) The range of temperatures is the difference between the maximum and the minimum temperatures. From the graph we can see that:
maximum temperature: 18 °C
minimum temperature: 12 °C
Then:
range of temperatures: 18-12 = 6°C
b) The trend is upward because, given any temperature, the next one is higher.
Suppose x grams of 8% solution should be mixed to make 100 g of 3% solution.
here we shall have:
the amount of 3% solution in the 100 g will be:
3/100*100=3 grams
the the equation will be, 8% of what quantity becomes 3g?
(8/100)*x=3
hence solving for x we shall have:
0.08x=3
x=3/0.08
x= 37.8 grams
The implication of this is that, when you have 37.5 grams of 8% solution, that will contain 3 of pure chemical and hence when you add more solvent on top of 37.5 g until you reach 100g, that will be 3% solution.
