2 years ago

MATH

Mathematics

1 answer:

Ierofanga [76]2 years ago

3 0

Answer:p=7

Step-by-step explanation:4x7=28

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Solve and graph the inequality 6 + 3n ≤40

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3 years ago

On his outward journey, Ali travelled at a speed of s km/h for 2.5 hours. On his return journey, he increased his speed by 4 km/

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Answer:

3.08 km/h.

Step-by-step explanation:

We know that,

$Speed=\dfrac{Distance}{Time}$

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$2.5=\dfrac{d}{t}$

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On his return journey, he increased his speed by 4 km/h and saved 15 minutes. So, distance is d and times is t-15.

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Put t=40 in (1).

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So, the average speed is

$\text{Average speed}=\dfrac{\text{Total distance}}{\text{Total time}}$

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