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Ierofanga [76]
3 years ago
11

I NEED HELPIM NO GOOD AT RATESI CANT GO ONE TILL THIS IS ANSWER

Mathematics
2 answers:
Murrr4er [49]3 years ago
8 0

Answer : The correct option is, (A) 7 hours 42 minutes

Explanation :

Average speed : It is defined as the ratio total distance to total time.

Formula used :

\text{Average speed}=\frac{\text{Total distance}}{\text{Total time}}

As per question,

Total distance traveled = 492.8 mile

Average speed = 64 mile/hour

Now put all the given values in the above formula, we get:

\text{Average speed}=\frac{\text{Total distance}}{\text{Total time}}

64mile/hour=\frac{492.8mile}{\text{Total time}}

\text{Total time}=\frac{492.8mile}{64mile/hour}

\text{Total time}=7.7hour

As we know that, 1 hour has 60 minutes.

7.7 hours

= 7 hr + 0.7 hr

= 7 hr + 0.7 × 60 min

= 7 hr + 42 min

\text{Total time}=7\text{ hour }42\text{ minute}

Therefore, the the take them to reach their destination will be, 7 hours 42 minutes.

goblinko [34]3 years ago
6 0

Answer:

I believe its d bc if you divide the distance by speed you get that

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Answer:

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Step-by-step explanation:

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3 years ago
What is a real world situation that can be modeled by the equation 1.25x = 0.75 + 50?
erma4kov [3.2K]
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3 0
3 years ago
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an open rectangular cardboard box with a square base is to have a volume of 256cm^3. Find the dimensions of the box if the area
Anit [1.1K]
Let
x------> the length side of the square base of the box
y-------> the height of the box

we know that
volume of the box=b²*h
b=x
h=y
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so
256=x²*y------>y=256/x²-------->  equation 1

<span>The amount of material used is directly proportional to the surface area, so we will minimize the amount of material by minimizing the surface area.</span>

surface area of the cardboard=area of the base+perimeter of base*height
area of the base=x²
perimeter of the base=4*x
height=y
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substitute equation 1 in equation 2
SA=x²+4x*[256/x²]-----> SA=x²+1024/x

step 1 
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y=256/x²------> y=256/8²-----> y=4 cm

the answer is
the length side of the square base of the box is 8 cm
the height of the box is 4 cm

5 0
3 years ago
How do I solve this math question ?
svlad2 [7]
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and then with that number you divide it by 5
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Roman55 [17]

Answer:

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Step-by-step explanation:

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