Answer:
Top left corner: 17 tiles are shaded, which is 85% of 20
Step-by-step explanation:
x/20 = 85/100
100x = 1700
100x/100 = 1700/100
x = 17
Hi!! so here i’ll explain: for the first one, a times 3 is 3a. so you have 3a=-30. then you divide both sides by 3 and you have a=-10!! do the same for the rest, hope this helps
Answer:
A. x equals 5 plus or minus the square root of thirty-three all over 2
Step-by-step explanation:
Let's move all the terms to one side:
![x^2=5x+2](https://tex.z-dn.net/?f=x%5E2%3D5x%2B2)
![x^2-5x-2=0](https://tex.z-dn.net/?f=x%5E2-5x-2%3D0)
Now, we want to use the quadratic formula, which states that for a quadratic equation of the form
, the roots can be found with the equation:
or
.
Here, a = 1, b = -5, and c = -2, so plug these in:
OR
![x=\frac{-(-5)-\sqrt{(-5)^2-4(1)(-2)} }{2(1)}=x=\frac{5-\sqrt{25+8} }{2}=\frac{5-\sqrt{33} }{2}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-%28-5%29-%5Csqrt%7B%28-5%29%5E2-4%281%29%28-2%29%7D%20%7D%7B2%281%29%7D%3Dx%3D%5Cfrac%7B5-%5Csqrt%7B25%2B8%7D%20%7D%7B2%7D%3D%5Cfrac%7B5-%5Csqrt%7B33%7D%20%7D%7B2%7D)
Thus, the answer is A.
Hope this helps!
Answer:
1 7/8
Step-by-step explanation:
15/8= 15/1 * 1/8
15/8
Simplify that and you get 1 7/8.
Hope it helps!
Answer: times 2
Step-by-step explanation: u multiply