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ANTONII [103]
3 years ago
13

What does x stand for in the equation 3x = 21 ?

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
5 0

Answer:

7

Step-by-step explanation:

What times 3 = 21 . 7 x 3 = 21 therefore 7 is the x

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Nope. 3/8 an inch is 0.9525 cm. 
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Un auto viaja con una velocidad promedio de 84 kilómetros por hora. ¿En cuánto tiempo viaja 462 kilómetros?
timama [110]

The car takes the time 5.5 hours i.e.5 hours and 30 minutes to travel 462 kilometres when the car travels at average speed of 84 kilometres per hour

Given the average speed of the car is 84 kilometres per hour and the distance to be travelled is 462 kilometres and asked to find the time taken for the journey of 462 kilometres

To calculate the time taken for the journey we use the below-mentioned formula

speed=\frac{distance}{Time taken}

(speed)×(Time taken)=distance

Time taken=\frac{distance}{speed}

Time taken=\frac{462 kilometres}{84KMPH}

Time taken=5.5 hours i.e.5 hours and 30 minutes

As a result, the time spent on the car journey is 5.5 hours

Hence, It takes the time 5hours and 5 minutes to travel 462 kilometres

Learn more about time here:

brainly.com/question/28050940

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5 0
2 years ago
Fred buys a video game disk for 4$. there was a discount of 20%. what is the sales price?
enyata [817]
The answer is this: $3.60

4 x 10 = 40 - 0.4 = 3.6 



4 0
4 years ago
Read 2 more answers
Use the rectangle below to answer both parts of the question.
trasher [3.6K]

Answer:

part 1= "72=(2w)+(w-15)"

part 2= "29"

I'm not sure if they want "w = abc"

I used that equation to solve part 2

Hope this helps you, I've been where you are

6 0
3 years ago
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