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RUDIKE [14]
2 years ago
15

a car reduced its speed in a ratio of 2 to 3 if the final speed was 90 km per hour then what was the original speed.​

Mathematics
1 answer:
Licemer1 [7]2 years ago
8 0

Answer:

Orginal Speed is 135

Step-by-step explanation:

The ratio of final speed: original speed is

\frac{2}{3\\}

We know that 90 km is it final speed so, we set up a proportion

\frac{2}{3} =90/x

2x=270\\x=135

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Answer:

98.99%

Step-by-step explanation:

The combined reliability of both components must be 98%. Given that both components must be functional and have the same reliability 'r', the minimum value of 'r' that meets the system requirements is given by:

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The level of reliability required for each component is 98.99%.

6 0
3 years ago
The Rockford's have a square play area that is built around a center sandbox that is in the shape of a circle. The sides of the
stealth61 [152]
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5 0
3 years ago
Hats Off
Zinaida [17]

Answer:

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Step-by-step explanation:

8 0
3 years ago
Find the circumference of the pizza to the nearest tenth. Pizza : 10 inches
Eddi Din [679]

Answer:

31.4 in

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5 0
3 years ago
#20 four times the sum of number. and 15 is a least20. Let X represent the number. :find ball possible values for X
gayaneshka [121]
For this case what we have to take into account is the following variable:
 x = represent the unknown number
 We now write the following inequality:
 "four times the sum of number and 15 is at least 20"
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 We clear the value of x:
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 The solution set is:
 [-10, inf)
 Answer:
 
all possible values for X are:
 
[-10, inf)
6 0
3 years ago
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