to their meaning. One is done for you.
come across
bring it on find one's voice lend an ear
on the ball get along hang on over the moon work out sharp as a tack
IDIOMS
PHRASES
1. To meet or find by chance
1. Competent on the ball
Become more confident in expressing
oneself
2. To exercise -
Extremely happy
3. To accept a challenge with confidence
Mentally agile
4. To have a friendly relationship
5. To keep something -
Read the given sentences carefully and fill in with appropriate phrasal verbs. Choose
them from the help box.
get along with take off shut down look after warm up
Instructed the pa
the pages to wear the seat belts during the labe
Answers
Answer:
It's vitally important to take safety precautions when working with electricity. ... Avoid water at all times when working with electricity. Never touch or try repairing any electrical equipment or circuits with wet hands. It increases the conductivity of the electric current
Explanation:
Question : Prove that√5 is irrational.
Answer :
Let us assume that √5 is a rational number.
Sp it t can be expressed in the form p/q where p,q are co-prime integers and q≠0
⇒√5=p/q
On squaring both the sides we get,
⇒5=p²/q²
⇒5q²=p² —————–(i)
p²/5= q²
So 5 divides p
p is a multiple of 5
⇒p=5m
⇒p²=25m² ————-(ii)
From equations (i) and (ii), we get,
5q²=25m²
⇒q²=5m²
⇒q² is a multiple of 5
⇒q is a multiple of 5
Hence, p,q have a common factor 5. This contradicts our assumption that they are co-primes. Therefore, p/q is not a rational number
√5 is an irrational number
Hence proved