Answer:
5
Step-by-step explanation:
let a be the other number
so one number is ![\frac{2}{3}a - 3](https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B3%7Da%20-%203)
a +
= 17
![\frac{5}{3}a - 3 = 17](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B3%7Da%20-%203%20%3D%2017)
= 17 + 3 = 20
a = 20 x
= 12
= 5
Answer:
66
Step-by-step explanation:
The sum of all of the angles in a triangle is 180. So all three angles would add up to 180:
(a + 21) + 57 + (a - 30) = 180
Combine like terms:
2a + 48 = 180
2a = 132
a = 66
Answer:
B. Between x 2 and x 3
Step-by-step explanation:
We write to expressions since there are two unknown here which is x and y. The first expression is the <span>sum of two numbers, x and y, is 12.
x + y = 12
The second expression is that the </span><span>difference of x and two times y is 6.
x -2y = 6
Therefore, the values of x and y are 10 and 2.</span>
Is there any extra information in the question?