1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kobusy [5.1K]
3 years ago
11

The recommended angle for a wheel chair ramp is 5 degrees. If the rise of the ramp to go up the steps is 2 feet, find the horiza

ntal run length that the ramp must start. (Round to one decimal place)
wheel chair ramp
Mathematics
1 answer:
-Dominant- [34]3 years ago
5 0

Answer:

22.9 feet

Step-by-step explanation:

You are using Tangent because you have the opposite and adjacent sides

Tan 5 = 2/x

x Tan 5= 2

x= 2/Tan5

= 22.860

You might be interested in
Two angle measures in a scalene triangle are 38° and 25°. What is the measure of the third angle?
NISA [10]
117, just add the two and subtract from 180
5 0
3 years ago
Read 2 more answers
A random sample of 10 parking meters in a resort community showed the following incomes for a day. Assume the incomes are normal
GenaCL600 [577]

Answer:

A 95% confidence interval for the true mean is [$3.39, $6.01].

Step-by-step explanation:

We are given that a random sample of 10 parking meters in a resort community showed the following incomes for a day;

Incomes (X): $3.60, $4.50, $2.80, $6.30, $2.60, $5.20, $6.75, $4.25, $8.00, $3.00.

Firstly, the pivotal quantity for finding the confidence interval for the population mean is given by;

                         P.Q.  =  \frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }  ~ t_n_-_1

where, \bar X = sample mean income = \frac{\sum X}{n} = $4.70

            s = sample standard deviation = \sqrt{\frac{\sum (X-\bar X)^{2} }{n-1} }  = $1.83

            n = sample of parking meters = 10

            \mu = population mean

<em>Here for constructing a 95% confidence interval we have used a One-sample t-test statistics because we don't know about population standard deviation.</em>

<u>So, 95% confidence interval for the population mean, </u>\mu<u> is ;</u>

P(-2.262 < t_9 < 2.262) = 0.95  {As the critical value of t at 9 degrees of

                                            freedom are -2.262 & 2.262 with P = 2.5%}  

P(-2.262 < \frac{\bar X-\mu}{\frac{s}{\sqrt{n} } } < 2.262) = 0.95

P( -2.262 \times {\frac{s}{\sqrt{n} } } < {\bar X-\mu < 2.262 \times {\frac{s}{\sqrt{n} } } ) = 0.95

P( \bar X-2.262 \times {\frac{s}{\sqrt{n} } } < \mu < \bar X+2.262 \times {\frac{s}{\sqrt{n} } } ) = 0.95

<u>95% confidence interval for</u> \mu = [ \bar X-2.262 \times {\frac{s}{\sqrt{n} } } , \bar X+2.262 \times {\frac{s}{\sqrt{n} } } ]

                                         = [ 4.70-2.262 \times {\frac{1.83}{\sqrt{10} } } , 4.70+ 2.262 \times {\frac{1.83}{\sqrt{10} } } ]

                                         = [$3.39, $6.01]

Therefore, a 95% confidence interval for the true mean is [$3.39, $6.01].

The interpretation of the above result is that we are 95% confident that the true mean will lie between incomes of $3.39 and $6.01.

Also, the margin of error  =  2.262 \times {\frac{s}{\sqrt{n} } }

                                          =  2.262 \times {\frac{1.83}{\sqrt{10} } }  = <u>1.31</u>

4 0
3 years ago
A rectangular plot of land is represented on a coordinate plane where each unit is one foot. The vertices are at (50,20), (50,90
Zina [86]
The answer is b I believe
4 0
3 years ago
Read 2 more answers
A concert hall has seven sections. Each section has twenty-three rows. Each row has fourteen seats. If the theater sells out for
gayaneshka [121]
If the theater sells out, 2254 people would have attended. With each ticket being 20 dollars, $45,080 would have been collected at the box office
7 0
3 years ago
Please help with this math problem ASAP! I will give brainliest!
borishaifa [10]
  • x = 112°
  • y = 68°
  • z = 68°

Step-by-step explanation:

x = 112°

y = z = 180° - 112° = 68°

7 0
2 years ago
Other questions:
  • 3 medium apples have about 285 calories <br> (Unit rate)
    13·1 answer
  • Compute the amount of interest earned in the following simple interest problem. A deposit of $800 at 3.5% for 7 years = _____.
    13·2 answers
  • The difference of a number and sixteen​
    13·1 answer
  • Rachel hikes at a steady rate from a ranger station to a campground that is 20 mi away. After 2 h, she is 13 mi from the campgro
    11·1 answer
  • Write each fraction in the simplest form 6/9?​
    5·1 answer
  • Can 14, 18, and 31 form a triangle ?
    11·1 answer
  • Given: m∠AEB = 45°
    9·2 answers
  • Someoneee helppp meee plzzzz
    15·1 answer
  • Javier reads 40 pages every hour, how many pages does Javier reads in 2.25 hours?
    15·1 answer
  • Please answer fast! 15 points for the answer
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!