Answer:
5√7
Step-by-step explanation:
What we want to do is first just put the 175 in a sqrt like this:
√175
Next we do prime factorisation to try and simplify further.
175
/ \
25 7
/ \
5 5
We can figure out that this out √5^2 times 7
we can cancel the sqrt and the squared and simplify to 5√7
So there is your answer, 5√7.
If you have any questions feel free to ask. Also for the prime factorisation the formatting may be off, sorry for the inconvenience and have a good day!
Maria = x
Tom = y
Use substitution
x+y=30
2y=x
2y+y=30
3y=30
y=10
Tom is 10 years old.
x+y=30
x+10=30
x=20
Maria is 20 years old.
Answer:
the ratio is 3:1
Step-by-step explanation:
Hope the picture will help you...
