Answer:
Sydney's age is 28
Step-by-step explanation:
Let Devaughn be D
And Sydney be S
D=S+8..... equation 1
D+S=64...... equation 2
Substitute equation 1 to equation 2
S+8+S=64
2S+8=64
2S=64-8
2S=56
S=56/2
S=28
Hope it helps
Good luck
Answer:
9
Step-by-step explanation:
13-9= 4
Answer:
(4,0) and (2,0)
Step-by-step explanation:
For an x-intercept, y=0, so now we have:
(x-4)(x-2)=0
Anything multiplied by 0 is 0, so (x-4)=0 and/or (x-2)=0
(x-4)=0
x=4
(x-2)=0
x=2
The x-intercept co-ordinates are: (4,0), (2,0)
circumference =2πr=2× 7 22 ×28=22×8 =176 cm
Area =πr 2 = 7 22 ×28×28=88×28 =2464 cm 2
<u><em>circumference=176 cm </em></u>
<u><em>Area= 2464 cm 2</em></u>
