Answer:
10
Step-by-step explanation:
Answer:
use the quadruple double schlop schlop theorum
Step-by-step explanation:
Factor
25
out of
50
.
3
√
25
(
2
)
Rewrite
25
as
5
2
.
3
√
5
2
⋅
2
Pull terms out from under the radical.
3
(
5
√
2
)
Multiply
5
by
3
.
15
√
2
The result can be shown in multiple forms.
Exact Form:
15
√
2
Decimal Form:
21.21320343
Answer:
Step-by-step explanation:
Look at the picture.
ΔADC and ΔACB are similar. Therefore the corresponding sides are in proportion:
We have
Substitute:
<em>cross multiply</em>
Let y= years ago when dad's age was 4 times son's age
60-y=4(30-y)
60-y=120-4y
-y+4y=120-60
3y=60
y=60/3
y= 20 years ago
Then 30-20= 10 yrs. old, the boys age when his dad was 40 years old.
