Answer:
Step-by-step explanation:
Complementary angles are angles that add up to 90°.
We have C and D as complementary.
Their sum is:
Substitute values and solve for x:
- 8x + 5x - 1 = 90
- 13x = 90 + 1
- 13x = 91
- x = 91/13
- x = 7
answer
c) 2520
Step-by-step explanation:
1st digit 1 of 7
2nd digit 1 of 6
3rd digit 1 of 5
4th digit 1 of 4
5th digit 1 of 3
7*6*5*4*3=2520 combination
Answer:
40 degrees
Step-by-step explanation:
so, a triangle is 180 degrees. you know that one angle is 60 degrees.
180= 60+ 2x + x
this is the equation of the triangle
120=3x
simplify
40=x
x= 40 degrees
hope this helps :)
Annexation of Texas or the Devate over slavery in the territories prolly the annexation of texas
We can distribute
2(5)+2(-x)=10-2x
we get
8+10-2x=?
18-2x=?
whatever that ? is, we don't know
multiply both sides by -1
2x-18=-?
add 18 to both sides
2x=18-?
divide bth sides by 2
x=9-(?/2)
whatever the left side it, just divide it by 2 and subtract it from 9
