Jasmine's race time was 34.287 minutes.Round her race time to the nearest tenth of a minute

1 answer:

3 0

The answer is 34.3 minutes

EXPLANATION

To round off to the nearest tenths, you need to find first the tenths value. In this case, it's 2.

Next, look to the number on the right side or the hundredths value. Since 8 is greater than 5, you have to round the tenths value up.

From 2, you'll now have 3. Zero out the values on the right of the tenths value.

So basically, you'll have now 34.3 minutes

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mckenna and lara work for their uncle eddie, who repairs skateboards and bicycles. uncle eddie is leaving for a vacation to the

juin [17]

The <em><u>correct answer</u></em> is:

15 bicycles and 6 skateboards.

Explanation:

Let x represent the number of bicycles and y represent the number of skateboards. The first equation in our system is then

x+y = 21, since there are 21 total items in the shop.

Each bicycle has 2 tires and each skateboard has 4; this gives us the equation

2x+4y=54 (because they are ordering 54 tires).

This makes our system

$\left \{ {{x+y=21} \atop {2x+4y=54}} \right.$

We will use elimination to solve this; we first need one of the variables to have the same coefficient in both equations. We will make x the same, and we will do this by multiplying the first equation by 2:

$\left \{ {{2(x+y=21)} \atop {2x+4y=54}} \right. \\
\\\left \{ {{2x+2y=42} \atop {2x+4y=54}} \right.$