A hiker walks at a speed of 3 2/5 km per hour. how many km will he walk in 3/4 of an hour

Mathematics

1 answer:

Art [367]3 years ago

6 0

Answer:

2.55

Step-by-step explanation:

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I need help on this!

olga2289 [7]

So what you need to do is subtract 54 and 63 and then whatever you get you add that to 72 and that’s your answer

5 0

3 years ago

The function g(x) = 10x2 – 100x + 213 written in vertex form is g(x) = 10(x – 5)2 – 37. Which statements are true about g(x)? Ch

aleksandrvk [35]

Given that g(x)=10x^2-100x+213 in vertex form is:
g(x)=10(x-5)2-37
The vertex form of an equation is given by the formula:
f(x)=a(x-h)^2+k
where the vertex is:
(h,k)
Therefore fro our expression the vertex of g(x) is (5,-37)

6 0

4 years ago

Read 2 more answers

Please help me with this :)

djyliett [7]

2.5 and 5 should be the answer

7 0

3 years ago

The heights of twelve month old boys are normally distributed with a mean of 29.8 inches and a standard deviation of 1.2 inches.

Triss [41]

Answer:

About twenty-one percent of twelve month old boys are shorter than 28.8 inches.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 29.8, \sigma = 1.2$