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
miskamm [114]
2 years ago
11

What is the area of a trapezoid that has bases of 1 1/4 feet and 14 inches and a height of 3 inches? 43.5 in. 2 87 in. 2 22.9 in

. 2 3.6 in. 2
Mathematics
1 answer:
PolarNik [594]2 years ago
4 0
The area of a trapezoid is the average of the bases times the height, mathematically:

A=h(b1+b2)/2, in this case:

A=3(1.25ft(12in/ft)+14)/2

A=3(29)/2

A=43.5 in^2


You might be interested in
Persons having Raynaud's syndrome are apt to suffer a sudden impairment of blood circulation in fingers and toes. In an experime
Citrus2011 [14]

Answer:

There is enough evidence to say that the true average heat output of persons with the syndrmoe differs from the true average heat output of non-sufferers.

Step-by-step explanation:

We have to perform a hypothesis test on the difference between means.

The null and alternative hypothesis are:

H_0: \mu_1-\mu_2=0\\\\H_a: \mu_1-\mu_2

μ1: mean heat output for subjects with the syndrome.

μ2: mean heat output for non-sufferers.

We will use a significance level of 0.05.

The difference between sample means is:

M_d=\bar x_1-\bar x_2=0.63-2.09=-1.46

The standard error is

s_{M_d}=\sqrt{\sigma_1^2/n_1+\sigma_2^2/n_2}=\sqrt{0.3^2/9+0.5^2/9}=\sqrt{ 0.038 } \\\\ s_{M_d}=0.194

The t-statistic is

t=\dfrac{M_d}{s_{M_d}}=\dfrac{-1.46}{0.194}=-7.52

The degrees of freedom are

df=n_1+n_2-2=9+9-2=16

The critical value for a left tailed test at a significance level of 0.05 and 16 degrees of freedom is t=-1.746.

The t-statistic is below the critical value, so it lies in the rejection region.

The null hypothesis is rejected.

There is enough evidence to say that the true average heat output of persons with the syndrmoe differs from the true average heat output of non-sufferers.

5 0
2 years ago
A student organization wondered how many hours per week college students study during a term. Each of the 10 students in the org
Inga [223]

Answer:

No, a convenience sample was taken.Therefore, the sample may not be representative of all college students in terms of number of hours studied per week.

Step-by-step explanation:

One of the important conditions required in other to estimate the mean of the population from the confidence interval. Requires that the data must be a random Sample. This is to ensure that sample values are not biased and as such are representative of the larger group of data.

However, in the scenario described above, the sample chose. Are friend's of the student, this makes the data lack randomness as those who aren't friends to the student do not stand a chance of being selected. The sampling procedure employed is called convenience sampling.

4 0
3 years ago
Problem solving: Jade ran 6 times around her neighborhood to complete a total of 1 mile. How many times will she need to run to
IRISSAK [1]
5 times, your welcome my friend
3 0
3 years ago
Read 2 more answers
The sum of three consecutive positive numbers is 147. Find the product of the greatest and the
Dima020 [189]

Answer:

2400

Step-by-step explanation:

x+y+z=147

x+(x+1)+(x+2)=147

3x+3=147

3x=144

x=48

The three consecutive positive numbers are 48, 49, and 50.

48 • 50 = 2400

5 0
2 years ago
What values complete each statement? Enter your answers in the blanks. (Enter your answer) (√5) 2 = _________ in simplest form.
saul85 [17]
Ftyuuiiuhhhhhhhhcccddwwqduuu
6 0
3 years ago
Other questions:
  • $75 dinner; 18% tip <br> please help me!
    10·2 answers
  • What is a variable that cannot be controlled?
    9·1 answer
  • Describe how you would use a yardstick to measure a length of a rug
    10·1 answer
  • Evaluate the expression 4 (9-16)
    14·1 answer
  • PLS HELP ASAP. IM TIMED
    11·1 answer
  • Anyone down to play nitro type with me?
    8·2 answers
  • If the sphere shown above has a radius of 19 units, then what is the approximate volume of the sphere?
    6·1 answer
  • Code<br><br> fg2p3e2<br><br> Only from ages to 12 up to 16
    7·2 answers
  • Help please someone I’m very confused
    14·1 answer
  • Another submarines dissent can be modeled as Y= -250 X, where why is the vertical position and access time in hours. How long wi
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!