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Sedbober [7]
3 years ago
15

How much time woiuld a old car take to cover a distance of 39 miles at a speed of 13 miles/i hour ?

Mathematics
1 answer:
yulyashka [42]3 years ago
4 0

Answer:

3 hours

Step-by-step explanation:

39 miles/ 13 miles per hour means 3 hours. SIMPLE!

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II establishes the lines are parallel, then III renames the parallel lines to refer to specific segments. The order of these statements should be II, III.

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The appropriate choice is ...

... II, III, IV, I . . . . . . . the 3rd selection

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Solve 4x + 11 = k for x.
ehidna [41]

4x + 11 = k
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x =  \frac{k - 11}{4}
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How mamy ways can you add three differemt numbers to get a sum of 20
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What is the length of the shortest altitude in a triangle, if the lengths of the sides are 24 cm, 25 cm, 7 cm?
AfilCa [17]

Answer:

The shortest altitude is 6.72 cm

Step-by-step explanation:

Given that the side lengths are

24 cm, 25 cm, 7 cm

The area of a triangle =

A = \sqrt{s \cdot (s-a)\cdot (s-b)\cdot (s-c)}

Where;

s = Half the perimeter = (24 + 25 +  7)/2 = 28

A = √((28×(28 - 24)×(28 - 25)×(28 - 7)) = 84 cm²

We note that 84/7 = 12

Therefore, the triangle is a right triangle with hypotenuse = 25, and legs, 24 and 7, the height of the triangle = 7

To find the shortest altitude, we utilize the formula for the area of the triangle A = 1/2 base × Altitude

Altitude  = A/(1/2 ×base)

Therefore, the altitude is inversely proportional to the base, and to reduce the altitude, we increase the base as follows;

We set the base to 25 cm to get;

Area of the triangle A =  1/2 × base × Altitude

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4 0
3 years ago
HELLO GUYS!!
Kipish [7]
The Area of the lawn is:

20m x 14m = 280m^2

The Area of the Circle is:

pi x 5^2 = 78.54

280 - 78.54 = 201.46m^2
8 0
3 years ago
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