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BartSMP [9]
3 years ago
7

Sameen bought 2 1/5 pounds of carrots for $6.60. At that rate how much would 1 pound of carrots cost.

Mathematics
2 answers:
katrin2010 [14]3 years ago
7 0
I believe it should be $3

You would need to divide 6.60 and 2⅕

You could use a calculator and divide 6.60 and 2.2 (2⅕) to get 3 or divide by using fractions.

Make both 6.60 (6 6/10) and 2⅕ into improper fractions

66/10 ÷ 11/5

Turn it into a multiplication problem and flip 11/5

66/10 × 5/11

Multiply across then divide or simplify

330/110 = 3

So $3 would be your answer

Hope this helps!




d1i1m1o1n [39]3 years ago
4 0
1 pound of carrots would cost $3.30

You divide $6.60 by 2 to get the price per pound
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Babies born after 40 weeks gestation have a mean length of 52.2 centimeters (about 20.6 inches). Babies born one month early hav
Sveta_85 [38]

Answer:

a) Z = -2.88

b) Z = -0.96

c) 40 weeks gestation babies

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

a. Find the standardized score (z-score), relative to all U.S. births, for a baby with a birth length of 45 cm.

Here, we use \mu = 52.2, \sigma = 2.5. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{45 - 52.2}{2.5}

Z = -2.88

b. Find the standardized score of a birth length of 45 cm. for babies born one month early, using 47.4 as the mean.

Here, we use \mu = 47.4, \sigma = 2.5. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{45 - 47.4}{2.5}

Z = -0.96

c. For which group is a birth length of 45 cm more common?

For each group, the probability is 1 subtracted by the pvalue of Z.

Z = -2.88 has a lower pvalue than Z = -0.96, so for Z = -2.88 the probability 1 - pvalue of Z will be greater. This means that for 40 weeks gestation babies a birth length of 45 cm is more common.

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