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Rama09 [41]
2 years ago
6

27.9km to the nearest km

Mathematics
1 answer:
yuradex [85]2 years ago
8 0

Answer: It rounds to <u>28 km</u>

Explanation:

The units or ones digit is "7". The next digit over (9) is five or larger. This means we bump the 27 up to 28. Everything after the 7 is ignored.

So we could have something like 27.999871212512 and we still follow the same idea of focusing on the 27, bumping it up to 28, and everything else gets ignored.

The reason for this is because 27.9 is much closer to 28 than it is to 27. Draw out a number line to help see this. Split the region from 27 to 28 into 10 equal pieces. The 9th little piece represents 27 & 9/10 aka 27.9

Refer to the number line diagram below.

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svetlana [45]
<span>Given: family travelled 25 miles in 30 minutes or 50 miles /hr current time 3.00 pm. total distance=225 miles. solution: speed = distance * time time = distance/spedd = 225/50 time = 4.5 hours. reaching time= 3 hours +4 hour 30 minutes= 7.30 pm</span>
5 0
3 years ago
1.2.71
egoroff_w [7]

Answer:

Step-by-step explanation:

Set up an equation, where x is the number of gallons of 60% antifreeze solution.

Represent the percentages of antifreeze with decimal values.

0.6x + 0.3(80) = 0.5(x + 80)

Simplify and solve for x:

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6 0
3 years ago
SAM ≅ ΔZYX , <br> Options:<br> M = 36<br><br> M = 60<br><br> M = 84<br><br> M = 102
Reil [10]

Answer:

<u>M = 36</u>

Step-by-step explanation:

Since SAM = ZYX

We can assume that all angles on SAM will equal the same as ZYX.

There are 180° total in a triangle, so you add 60 + 84, which equals 144, then you subtract 144 from 180 to find the remaining angle.

Therefore M = 36°

3 0
3 years ago
Add: (-5u5 + 5) + 7u5
balu736 [363]

Answer:

2u^5+5

Step-by-step explanation:

Drop parenthesis and add like terms.

7u^{5}-5u^{5}+5=2u^{5}+5

Hope this helps!

If not, I am sorry.

7 0
2 years ago
What does it mean if the rate of an airplane is modeled by the function f(x) = 1x + 500?
Julli [10]

The questions seems to be lacking some information. By rate I'm going to assume position and in that scenario the answer would be B because the position function is modeled by a linear function.

7 0
3 years ago
Read 2 more answers
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