Answer:
240 minutes (4 hours)
Step-by-step explanation:
the descend 3000 ft every 20 minutes
36000 ÷ 3000 = 12
20*12 = 240 minutes
Answer:
31:1
Step-by-step explanation:
Answer: 705m
Explanation:
Using cosine rule:
c²= a²+b²-2abcosC
Substituting:
c²=750²+650²-2(750)(650)cos60
c=√Ans
c= 705.336799..
=705m (nearest metre)
Answer:
1) x≥6
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2) h > 20
Mark worked more than 20 hours.
Step-by-step explanation:
1) -20x+18≥-102
-20x≥-102-18
-20x≥-120
Dividing -20 both side
≥
x≥6
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2) 14h + 25 > 305
14h > 305-25
14h > 280
Dividing 14 both side
h > 20
Mark worked more than 20 hours.
Answer:
40t⁶
Step-by-step explanation:
Since -4t⁵ and -10t have the same variable (base), we can multiply their coefficients (numbers) and add their exponents
-4t⁵ * -10t = 40t⁶
Since both numbers are negative, when we multiply them, they cancel out.
SInce both variables are the same (both are t), we can just add their exponents together. Even though we don't see an exponent above -10t, we can assume that it is 1. Think of it as this, -10t = -10t¹ because it just represents -10t, -10t (specifically the t) isn't being multiplied by anything.
