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2 years ago

Graph the solution to the inequality on the number line. p < 20.2

Mathematics

1 answer:

Anit [1.1K]2 years ago

5 0

Answer:

See above graph

Step-by-step explanation:

In between those whole numbers, each mark represents ⅕ [or 0,2], therefore you move one-fifth block to the right of 20 with an open circle, then shade everything to the left.

≥, ≤ → Solid Circle [●]

>, < → Blank Circle [○]

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In a group of hats consisting of only blue hats, green hats, and purple hats, the ratio of blue hats to green hats to purple hat

elena-s [515]

Answer:64 hats

Step-by-step explanation:

Ratio of Blue hats= 7

Ratio of Green hats= 4

Ratio of purple hats= 12

Total ratio = 7+4+12 = 23

Total hats= 92 hats

To get number of hats.that are not blue, we add the ratio of green and purple together= 4+12= 16

Number of hats that are not blue will be:

16/23 × 92

= 16 × 4

= 64

64 hats are not blue.

8 0

2 years ago

How is 2:7 and 10,000:35,000 equivalent

liraira [26]

Answer:

Because for ratios, you take the first number and divide it by the second number.

Step-by-step explanation:

$\frac{10000}{35000}=\frac{2}{7}$

9 0

2 years ago

In a study of exercise, a large group of male runners walk on a treadmill for six minutes. Their heart rates in beats per minute

Vera_Pavlovna [14]

Answer:

a) 1.88% percent of the runners have heart rates above 130.

b) 50% percent of the nomrunners have heart rates above 130.

Step-by-step explanation:

Problems of normally distributed samples can be 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.

(a) What percent of the runners have heart rates above 130?

In a study of exercise, a large group of male runners walk on a treadmill for six minutes. Their heart rates in beats per minute at the end vary from runner to runner according to the N(104,12.5) distribution. This means that $\mu = 104, \sigma = 12.5$ .