Answer:
9/10
Step-by-step explanation:
first you find the lowest common denominator. 1/2 becomes 5/10, 2/5 becomes 4/10. 5/10+4/10=9/10
<em>Hey mate!!!!! yes we can see the picture but what do you want us to do for you??</em>
Answer:
<em>C</em><em>.</em><em>8</em><em>√</em><em>3</em><em>m</em><em> </em><em>o</em><em>r</em><em> </em><em>C</em><em>.</em><em>8</em><em>(</em><em>√</em><em>3</em><em>+</em><em>1</em><em>)</em><em>m</em>
Answer:
![30-3d\leq 20](https://tex.z-dn.net/?f=30-3d%5Cleq%2020)
Step by step explanation:
Let d represent the rate of temperature decrease in degrees Celsius per day from Monday to Thursday.
As temperature decreased at a constant rate in the next 3 days, so the rate of temperature will decrease 3d degree Celsius in 3 days.
We are told that the pool was open on Monday. The high temperature was
on Monday. So the decrease in temperature from Monday to Thursday will be
.
We have been given that the swimming pool is open when the high temperature is higher than
.
As the pool was closed on Thursday. This means that temperature on Thursday was less than or equal to 20 degree Celsius. We can represent this information in an inequality as:
![30-3d\leq 20](https://tex.z-dn.net/?f=30-3d%5Cleq%2020)
Therefore, the inequality
can be used to determine the rate of temperature decrease in degrees Celsius per day, d, from Monday to Thursday.
Answer:
units.
Step-by-step explanation:
The distance between points (a, b) and (c, d) is given by :_
![D=\sqrt{(d-b)^2+(c-a)^2}](https://tex.z-dn.net/?f=D%3D%5Csqrt%7B%28d-b%29%5E2%2B%28c-a%29%5E2%7D)
Given points : (-10,-7) (-8,1)
Distance between points (-10,-7) and (-8,1) = ![\sqrt{(1-(-7))^2+(-8-(-10))^2}](https://tex.z-dn.net/?f=%5Csqrt%7B%281-%28-7%29%29%5E2%2B%28-8-%28-10%29%29%5E2%7D)
![=\sqrt{(1+7)^2+(-8+10)^2}\\\\=\sqrt{8^2+2^2}\\\\=\sqrt{64+4}\\\\=\sqrt{68}](https://tex.z-dn.net/?f=%3D%5Csqrt%7B%281%2B7%29%5E2%2B%28-8%2B10%29%5E2%7D%5C%5C%5C%5C%3D%5Csqrt%7B8%5E2%2B2%5E2%7D%5C%5C%5C%5C%3D%5Csqrt%7B64%2B4%7D%5C%5C%5C%5C%3D%5Csqrt%7B68%7D)
Hence, distance between given points =
units.