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Sergio039 [100]
3 years ago
11

Doug entered a conoe race he rowed 3.5 miles in .5 hrs what is his average speed

Mathematics
1 answer:
vichka [17]3 years ago
4 0
7 miles per hour.

if you multiply the distance and time by 2 you get 7 miles in 1 hour, or 7 mph
You might be interested in
30 POINTS PLS HELP ASAP!!!!!!! WILL GIVE EVERY ANSWER 5 STARS AND WILL HEART EVERY COMMENT 2 THKS
Allushta [10]

Answer:

The x would be the month

The y would be the money 


Step-by-step explanation:

You would plot them by each month, 170-110= 60 dollar increase. 60 divided by 12, that leaves a 5 dollar increase each month. Your coordinates would be (0,110) (1,115) (2,120) (3,125)

The x would be the month

The y would be the money 



5 0
3 years ago
A, B & C form a triangle where BAC = 90° . AB = 7.3 mm and CA = 7.4 mm. Find the length of BC giving your answer rounded to
worty [1.4K]

Answer:

BC ≈ 10.4 mm(1 decimal)

Step-by-step explanation:

The question forms a right angle triangle. The angle BAC = 90°. The side AB = 7.3 mm and the side CA = 7.4 mm. The length of BC can be solved below.

AC = opposite side = 7.4 mm

AB = adjacent side = 7.3 mm

BC = hypotenuse = ?

Using pythagoras theorem we can find the longest side which is the hypotenuse

c² = a² + b²(pythagoras formular)

where

c = hypotenuse side

BC² = 7.4² + 7.3²

BC² = 54.76 + 53.29

BC² = 108.05

square root both sides

BC = √108.05

BC = 10.3947101931

BC ≈ 10.4 mm(1 decimal place)

5 0
3 years ago
The heights of the men age 18 and over in HANES5 averaged 69 inches; the SD was 3 inches. Suppose the histogram of their heights
emmasim [6.3K]

Answer:

a) 84th percentile.

b) The 25th percentile is of 67 inches.

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.

The heights of the men age 18 and over in HANES5 averaged 69 inches; the SD was 3 inches.

This means that \mu = 69, \sigma = 3

Such a man that is 6 feet tall is at the percentile of this height distribution.

6 feet = 6*12 inches = 72 inches. So this percentile is the p-value of Z when X = 72. So

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

Z = \frac{72 - 69}{3}

Z = 1

Z = 1 has a p-value of 0.84, so 84th percentile.

What is the 25th percentile, to the nearest inch

X when Z has a p-value of 0.25, so X when Z = -0.675.

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

-0.675 = \frac{X - 69}{3}

X - 69 = -0.675*3

X = 67

The 25th percentile is of 67 inches.

7 0
2 years ago
PLEASE ANSWER LIKE ROGHT NOW
Setler79 [48]

Answer:

25

Step-by-step explanation:

5 (8 + 1) - 20

5 (9) - 20

45 - 20

= 25

HOPE THIS HELPS

PLZ MARK BRAINLIEST

4 0
2 years ago
What is 4.3 convert into a fraction
marysya [2.9K]
A mixed fraction 4 3/10 ,or 43/10. your teacher probably wants the first answer though
3 0
3 years ago
Read 2 more answers
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