Answer:
- 920
Step-by-step explanation:
There is a common difference d between consecutive terms in the sequence, that is
d = 22- 30 = 14 - 22 = 6 - 14 = - 8
This indicates the sequence is arithmetic with sum to n terms given by
= [ 2a₁ + (n - 1)d ]
where a₁ is the first term and d the common difference
Here a₁ = 30 and d = - 8 , thus
= [ (2 × 30) + (19 × - 8) ]
= 10(60 - 152)
= 10 × - 92
= - 920
Answer:
the answer is B because 3(x-2) is the same as 3x -2
Call the age a.
4a-3=3a+7
Add 3 to both sides and subtract 3a from both sides to get:
a=10
Therefore, 10 is the age.
Answer:
After solving we get
Step-by-step explanation:
We need to solve the equation:
Solving:
Multiply 4x with terms inside the bracket
We need to solve above equation to find value of x
Using quadratic formula for finding value of x:
We have a=180, b=-28 and c=-57
Values of x are
So, After solving we get
3t -15 = 2t + 10
t = 25
then, angle w = 3(25) - 15
angle w = 60
X is cointerior to angle w and given wz, then angle x = 120
the answer is: c. 120
hope this help