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
Verdich [7]
3 years ago
8

Plsssssss belpppppppppp

Mathematics
1 answer:
irinina [24]3 years ago
8 0
Since that is a triangle the expression would be b x h  / 2. So 12*12 = 144 / 2 = 72. The answer is 72. 
You might be interested in
The mean SAT score in mathematics, M, is 600. The standard deviation of these scores is 48. A special preparation course claims
kupik [55]

Answer:

Step-by-step explanation:

The mean SAT score is \mu=600, we are going to call it \mu since it's the "true" mean

The standard deviation (we are going to call it \sigma) is

\sigma=48

Next they draw a random sample of n=70 students, and they got a mean score (denoted by \bar x) of \bar x=613

The test then boils down to the question if the score of 613 obtained by the students in the sample is statistically bigger that the "true" mean of 600.

- So the Null Hypothesis H_0:\bar x \geq \mu

- The alternative would be then the opposite H_0:\bar x < \mu

The test statistic for this type of test takes the form

t=\frac{| \mu -\bar x |} {\sigma/\sqrt{n}}

and this test statistic follows a normal distribution. This last part is quite important because it will tell us where to look for the critical value. The problem ask for a 0.05 significance level. Looking at the normal distribution table, the critical value that leaves .05% in the upper tail is 1.645.

With this we can then replace the values in the test statistic and compare it to the critical value of 1.645.

t=\frac{| \mu -\bar x |} {\sigma/\sqrt{n}}\\\\= \frac{| 600-613 |}{48/\sqrt(70}}\\\\= \frac{| 13 |}{48/8.367}\\\\= \frac{| 13 |}{5.737}\\\\=2.266\\

<h3>since 2.266>1.645 we  can reject the null hypothesis.</h3>
6 0
3 years ago
Read 2 more answers
The graph shows how the number of keychains in your collection increased since you began collecting five months ago. How many ke
lina2011 [118]
Ten keychains in 3 months
7 0
3 years ago
Read 2 more answers
the library plans to add 1,000 books to its collection if the library can fit 15 books on each foot o shelving will the library
goblinko [34]

Answer: The anwser is 300

Step-by-step explanation:

3 0
2 years ago
Imagina que además de su trabajo en la bi biblioteca ,lizzie planea trabajar como voluntaria 3 horas por semana en un refugio de
Tamiku [17]

Answer:

(20 + 5w) + (10 + 3( w - 1 )) = 27 +8w

Step-by-step explanation:

¡espero que esto ayude!

3 0
3 years ago
Jill uses summer for honey to make lotion if each bottle of lotion requires 1/4 gallon and she uses a total of 3 gallons how man
Paul [167]

Answer:

12 Bottles of Lotion

Step-by-step explanation:

If Each bottle uses 1/4 Gallon (0.25 Gallon) then in order to find how many bottles of lotion Jill will be able to make with 3 Gallons, you would need to divide the 3 Gallons by the amount each bottle needs, like so...

3 gallons / 0.25 = # of Bottles

3 gallons / 0.25 = 12 Bottles

After doing this small calculation we can see that from the 3 Gallons Jill will be able to make a total of 12 Bottles of Lotion

4 0
3 years ago
Other questions:
  • How do you integrate arctan(x dx? i think that if you simplify the integral you get:?
    15·1 answer
  • Rob has 7 ones, nick has 5 ones.they put all their ones together.what number did they make?
    5·2 answers
  • What is 0.277 rounded to the nearest hundredth?
    6·2 answers
  • Which statement about the grapgh of line y=x+1/2 will be true if the 1/2 is replaced by -2
    12·1 answer
  • Noah has 5 meters of rope. How many pieces of rope of length 1/2 meter can he cut from it? Draw a diagram to illustrate your sol
    15·1 answer
  • Can anyone help with this? 20 points
    12·1 answer
  • If y varies directly with x and y = 5 when x = 4, find the value of y when x = -8.
    11·1 answer
  • F(x)=x^2. what is g(x)<br><br>a. g(x)=4x^2<br>b. g(x)=1/4x^2<br>c. g(x)=(4x)^2<br>d. g(x)=16x^2​
    5·1 answer
  • Help with these questions immediately
    5·1 answer
  • Select the expression NOT equivalent to 32 + 40x.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!