Answer:
Step-by-step explanation:
ABC is the sum of the angles CBD and ABD. So:
Substitute them for their equations:
Solve for x. Combine like terms on the right:
Add 11x to both sides:
Subtract 241 from both sides:
Divide both sides by 4:
The value of x is 9.
And we're done!
Answer:
Stella saved $187.5
Step-by-step explanation:
She needs $750.00 to buy the schoolbag.
She has saved 25% of the money she needs. So
0.25*750 = $187.5
Stella saved $187.5
Answer:
(20,-7)
Step-by-step explanation:
x+2y=6
x = 6-2y
3x+8y=4
3(6-2y)+8y=4
18-6y+8y=4
2y=-14
y = -7
x=6-2(-7)
x = 20
Answer:
w=22
Step-by-step explanation:
5(w-2)+10=3(2w-9)+5
1) Use the Distributive Property for 5(w-2) and 3(2w-9):
5w-10+10=6w-27+5
2) Combine alike terms:
5w=6w-22
3) Add a 22 to both sides:
22+5w=6w
4)Subtract 5w from both sides:
w=22