Please someone help me. Im giving brainliest !!!!
2 answers:
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Answer:
7.5 miles
Step-by-step explanation:
Since she runs 5 miles in 38 minutes, she runs miles in one minute.
Hence, in 57 minutes she runs:
$ \frac{5}{38}\times 57$ miles = 7.5 miles
Answer:
Firstly, we'll apply the below identity.
Applying the above identity.
⇒ (√5 + √2)²
⇒ (√5)² + (√2)² + 2×(√5)×(√2)
⇒ 5 + 2 + 2√10
⇒ 7 + 2√10
Comparing the LHS and RHS
⇒ 7 + 2√10 = a + b√10
∴ a = 7 and b = 2.