Answer:
Exact Form:
6/133
Decimal Form:
0.04511278
Step-by-step explanation:
Angles in a triangle always add up to 180 degrees
Here, we add up all the angles given to equal it to 180 degrees:
X + X + 10 + X + 5 = 180
Collect like terms -> 3X + 10 + 5 = 180
Add the whole numbers -> 3X + 15 = 180
Take 15 from to the other side (then make it negative) to isolate the X:
3X = 180 - 15
The subtract -> 3X = 165
Take 3 over to the other side (and it it should divide 165) and isolate the X -> X = 165/3
Finally, X = 55
Now wherever you see X in the triangle, replace it with 55.
With that, the top angle = 55 + 10 = 65 degrees
The bottom left angle = 55 + 5 = 60 degrees
The bottom right angle = 55 degrees
Answer:
6.5
Step-by-step explanation:
We need to solve out for x , the given Equation is ,
x - 3x + 2 = -11
-2x = -11 -2
-2x = -13
x = -13/-2
x = 6.5
Answer: C.186
Step-by-step explanation:
1. You know that he read 6 books when he was 6 years old and every year he doubled the number of books he read the previous year.
2. Let's call
the number of book he read each year and
the number of books he read between the ages of 6 and 10, then:
- At 6 years old:

- At 7 years old:

- At 8 years old:

- At 9 years old:
- At 10 years old:
The total books he read between the ages of 6 and 10 is:

<span>£1.95 multiplied by 6 is </span>£11.7