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creativ13 [48]
3 years ago
8

a car takes 8 hours to reach to its destination with a speed of 75km/hr. how much time will it take if the speed is 60km/hr?​

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
6 0

Answer:

10 hours

Step-by-step explanation:

speed = distance/time

s = d/t

d = st

d = 75 km/h * 8 h = 600 km

t = d/s

t = 600 km/(60 km/h) = 10 h

Answer: 10 hours

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the length of diagonal of a rectangular field is 23.7 m and one of its sides is 18.8 m. find the perimeter of the field.​
katen-ka-za [31]

Answer:

Approximately 66.4 Meters

Step-by-step explanation:

So we have a rectangle with a width of 18.8 meters and a diagonal with 23.7 meters. To find the perimeter, we need to find the length first. Since a rectangle has four right angles, we can use the Pythagorean Theorem, where the diagonal is the hypotenuse.

a^2+b^2=c^2

Plug in 18.8 for either <em>a </em>or <em>b. </em>Plug in the diagonal 23.7 for <em>c. </em>

<em />(18.8)^2+b^2=23.7^2\\b^2=23.7^2-18.8^2\\b=\sqrt{23.7^2-18.8^2} \\b\approx14.4 \text{ meters}

Therefore, the length is 14.4 meters. Now, find the perimeter:

P=2l+2w\\P=2(14.4)+2(18.8)\\P=66.4\text{ meters}

7 0
3 years ago
What is the value of 3ypower zero​
postnew [5]

Answer:

3

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4 0
2 years ago
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Answer:

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Answer: First solve the parentheses using order of operations. Then add and subtract from left to right.

Demo:

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Equation now looks like:

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Equation now looks like:

42 + 33

42 + 33 = 75

The value of this expression is 75.

5 0
3 years ago
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