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2 years ago

Consider the division of 15h2 + 10h + 25 by 5h.

Mathematics

2 answers:

Pachacha [2.7K]2 years ago

6 0

Answer:

X = 3h and Y = 2

Step-by-step explanation:

Andru [333]2 years ago

4 0

15h^2 +10h +25 /5h = x +y +

15h^2 +10h +25/5h = 3h +2
15h^2
---------
0 10h
10h
------
0 25

so x=3h and y =2 than the 3rd choice is correct ,right sure

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Tammy is at the dentist's office waiting on her appointment. She notices that the 6-inch-long minute hand is rotating around the

Elena L [17]

PART 1:55-21=35
35/60=.58333
360×.58333 =210 DEGREES
210*pi/180 = 3.665 RADIANS

PART 2: (pi) x 2r x .58333
3.14 x 12 x .58333 = 21.98 in

PART 3: 5π inches = 5 x 3.14 = 15.708 inches / 6 in radius = 2.618 radians

PART 4: 2.618 radians * 180/pi = 150° 
 x coordinate = 6(cos 150°) = -5.196 
 y coordinate = 6(sin 150°) = 3 
 the coordinates would be (-5.196, 2)

7 0

2 years ago

Read 2 more answers

George still has 40 percent of his book to read. If George has read 180 pages, how many pages does he still have to read? How do

beks73 [17]

Answer: 72

Step-by-step explanation: so you do a line = line method the lines should look like they are fractions.

you do it for the both numbers the percent is always out of 100.

it should look like this

40% ?

--------- = -----------

100% 180

then you cross multiply 40 and 180 and than divide it by 100. your answer should be 72. you later replace the ? with 72

you know this because It is smaller than 180 and its bigger than the number 40.

5 0

2 years ago

At 11:00 a.M., there are 400 members and 150 non-members visiting a museum. After 11:00 a.M., 10 members leave every five minute

alexdok [17]

Answer:

$16:27$

Step-by-step explanation:

GIVEN: At $11:00\text{ A.M.}$ , there are $400$ members and $150$ non-members visiting a museum. After $11:00\text{ A.M.}$ , $10$ members leave every five minutes and $5$ non-members arrive every five minutes.

TO FIND: ratio of members to non-members at $1:00\text{ P.M.}$

SOLUTION:

Total number of members in museum at $11:00\text{ A.M.}$ $=400$

as after every $5$ minutes $10$ members leave

total number of $5$ minutes interval in $2$ hour $=\frac{60}{5}=12$

total members at $1:00\text{ P.M.}$ $=400-10\times24$

$=160$

Total number of non-members in museum at $11:00\text{ A.M.}$ $=150$

as after every $5$ minutes $5$ non-members arrive

total number of $5$ minutes interval in $2$ hour $=\frac{60}{5}=12$

total non-members at $1:00\text{ P.M.}$ $=150+5\times24$

$=270$

ratio of members to non-members at $1:00\text{ P.M.}$ $=\frac{\text{number of members}}{\text{number of non-members}}$

$=\frac{160}{270}$

$=\frac{16}{27}$

Hence the ratio of members to non-members at $1:00\text{ P.M.}$ is $\frac{16}{27}$

5 0

2 years ago

What is the scientific notation of 0.0121

jek_recluse [69]

You move to the right, so the exponent is gonna be negative.
1.21 * 10-²

6 0

2 years ago

In a survey of men aged 20-29 in a certain country, the mean height is 73.4 inches with a standard deviation of 2.7 inches. Find

satela [25.4K]

Answer:

The minimum height in the top 15% of heights is 76.2 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:

$\mu = 73.4, \sigma = 2.7$