Step-by-step explanation:
the 1st one is 2/11
the 2nd one is 6/20
Answer:
2.50 cuz write ten and a half tally marks ten take 8.50 away
Answer:
√33
x = -5/2 ± ---------
2
Step-by-step explanation:
Through completing the square, we get:
x^2 + 5x + (5/2)^2 - (5/2)^2 - 2 = 0, or
(x + 5/2)^2 - 25/4 - 2 = 0.
This simplifies to
(x + 5/2)^2 = 33/4
Taking the square root of both sides yields:
x + 5/2 = ±√(33/4), which can be solved explicityl for x:
√33
x = -5/2 ± ---------
2
Answer:
![y = 0.35x + 35](https://tex.z-dn.net/?f=y%20%3D%200.35x%20%2B%2035)
Step-by-step explanation:
Linear equation:
A linear equation has the following format:
![y = mx + b](https://tex.z-dn.net/?f=y%20%3D%20mx%20%2B%20b)
In which m is the slope and b is the y-intercept.
Finding the slope:
We have two points: (110, 73.5) and (760, 301).
The slope is given by the change in y divided by the change in x. So
Change in y: 301 - 73.5 = 227.5
Change in x: 760 - 110 = 650
Slope: ![m = \frac{227.5}{650} = 0.35](https://tex.z-dn.net/?f=m%20%3D%20%5Cfrac%7B227.5%7D%7B650%7D%20%3D%200.35)
So
![y = 0.35x + b](https://tex.z-dn.net/?f=y%20%3D%200.35x%20%2B%20b)
Finding the y-intercept:
(760, 301) means that when
. So
![301 = 0.35(760) + b](https://tex.z-dn.net/?f=301%20%3D%200.35%28760%29%20%2B%20b)
![b = 301 - 0.35(760)](https://tex.z-dn.net/?f=b%20%3D%20301%20-%200.35%28760%29)
![b = 35](https://tex.z-dn.net/?f=b%20%3D%2035)
So
![y = 0.35x + 35](https://tex.z-dn.net/?f=y%20%3D%200.35x%20%2B%2035)
Answer:
28
Step-by-step explanation:
For Luis to get a mean of 20 he would need:
14 + 18 + 15 + 25 + x (unknown number of goal he needs) / 5 = 20
Therefore 14 + 18 + 15 + 25 + x = 100
Solve for x to get 28