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4 years ago

Keisha walked 12 miles in 3 hours. Which rate represents this situation?

Mathematics

2 answers:

pickupchik [31]4 years ago

4 0

The answer is C) because it says 12 miles and 3 hours nothing else

katen-ka-za [31]4 years ago

3 0

The answer is (C) 12m/3hr. To get a better answer, we divide 12 miles by 3 hours. When simplified, this is 4 miles an hour.

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HEEEEEEEELLLLLLLPPPPPPPPPPPPPPPPPPPPPPPPPPPPPp

Debora [2.8K]

Answer:

Step-by-step explanation:

This problem centers on recognizing the relationship between fractions and repeating decimals.

Note the following:

$\frac{1}{3}=0.33333333333333333333333333333333333333333333333...$

or more simply $\frac{1}{3}=0.\bar{3}$

This means that $2\frac{1}{3}=2.\bar{3}$

Going back to the original expression, $3\frac{2}{3}+2.\bar{3}$ simplifies to $3\frac{2}{3}+2\frac{1}{3}$

Next, adding mixed numbers. For adding mixed numbers, whole number parts and fractional parts can be added separately (this is because of the associative and commutative properties of addition)... because

$3\frac{2}{3}+2\frac{1}{3}$ means the same thing as

$(3+\frac{2}{3})+(2+\frac{1}{3})$

Changing the order, we can write it as

$3+2+\frac{2}{3}+\frac{1}{3}$

Adding the whole number parts, 3+2 is 5.

Next, adding the fraction parts:

For adding fractions, one must have a common denominator (the bottom part of the fraction must be the same). Once they are the same, the denominator just sort of "hangs out" until the end without changing, and the numerators (the tops) are added together.

Fortunately, the denominators are already the same. So, add the numerators, and the denominator will stay as a 3.

$\frac{2}{3}+\frac{1}{3}$

$\frac{1+2}{3}$

$\frac{3}{3}$

It is important to recognize that any fraction* where the number on the top matches the number on the bottom, the fraction is equivalent to 1.

*(except if the number we're talking about is zero)

So, the fraction parts added together, are equivalent to 1, and the whole number parts added were equal to 5. Returning to our expression...

$3+2+\frac{2}{3}+\frac{1}{3}$

$5+\frac{3}{3}$

$5+1$

$6$

7 0

2 years ago

Glacier State Bank pays 6% interest, compounded daily. After finding the daily interest rate (to the nearest millionths place) f

sveta [45]

6 per cent compounded daily yields
(1 + .(06/365) )^365
= 1.0618313107 -1=
 6.18313107 % annually

Total = 4,000 * (1.0618313107)^(92/365) =
$ 4,060.95

Here's a compound interest calculator:
http://www.1728.org/compint.htm

4 0

3 years ago

A hippopotamus weights 4 tons.feeding instructions are given in for weights in pounds.how many pounds does the hippopotamus weig

lys-0071 [83]

It's ....c 8000 lbs because there is 2000 lbs in a ton so you do 4x2 which equals 8 then you add your 3 zeros. Hope I was able to help.

6 0

4 years ago

PLS HELP AND IF U DONT KNOW THEN DONT ANSWER.IF H ANSWWR RIGHT ILL GIVE BRAINLIEST

neonofarm [45]

Answer:

Additive inverse: a+(-a)=0

Additive identity: a+0=a

Multiplicative inverse: a•1/a=1

Multiplicative identity: a•1=a

Step-by-step explanation:

8 0

3 years ago

What is a correct congruence statement for the triangles shown?

melamori03 [73]

For this one, look at the symbols inside each angle. In math, the rounded edges inside of angles mean they are congruent. So find which ones have the same amount of rounded edges and that would be your answer.

NKW ≅ UZE

put the corresponding angles in the middle. Since the object you were comparing to had the one line as the middle point, then that is your middle as well.

Hope this helps! Comment with any questions you may have.

6 0

3 years ago

Read 2 more answers