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
Rina8888 [55]
3 years ago
12

Find the surface area of the pyramid.

Mathematics
1 answer:
Monica [59]3 years ago
8 0

Answer:

306 mi^2

Step-by-step explanation:

surface area = area of base + lateral area

surface area = s^2 + 4bh/2

surface area = (10 mi)^2 + 4(10 mi)(10.3 mi)/2

surface area = 306 mi^2

You might be interested in
A manager records the repair cost for 4 randomly selected stereos. A sample mean of $82.64 and standard deviation of $14.32 are
zysi [14]

Answer:

CI = (70.861 , 94.418)

Step-by-step explanation:

In order to determine the 90% confidence interval you use the following formula (for a population approximately normal):

CI=(\overline{x}-Z_{\alpha/2}\frac{\sigma}{\sqrt{n}},\overline{x}+Z_{\alpha/2}\frac{\sigma}{\sqrt{n}})    (1)

\overline{x}: mean = 82.64

σ: standard deviation = 14.32

n: sample = 4

α: tail area = 1 - 0.9 = 0.1

Z_α/2 = Z_0.05: Z factor =  1.645

You replace these values and you obtain:

Z_{0.05}(\frac{14.32}{\sqrt{4}})=(1.645)(\frac{14.32}{\sqrt{4}})=11.778

The confidence interval will be:

CI=(82.64-11.778,82.64+11.778)=(70.861,94.418)

The 90% confidence interval is (70.861 , 94.418)

6 0
3 years ago
The value of x must be greater than<br> O0<br> 1<br> O3<br> 7<br> 12<br> 15
gogolik [260]

Answer:

3

Step-by-step explanation:

8 0
3 years ago
Find the GCF
Kaylis [27]
Greatest Common Factor. let's go over that. GCF of 6 and 12 would be 6 because 6 goes into 6, 1 times and 6 goes into 12, 2 times. . and it is the largest. so first you see if the lower number can go directly into the higher number. So 28a^2 b^2 c^2, is made of 14abc× 2abc. so you can say 14abc goes into 28a2b2c2, 2abc times. therefore 14abc is the largest factor.
7 0
3 years ago
The vertices of the triangle is A(-2,4), B(1,2), C(-2,-2)
spin [16.1K]
See description in the pic.

5 0
3 years ago
Samuel bought a jacket for $15 in January. The cost of the jacket increased to $27 in September. What percent of the original pr
Mumz [18]
27/15 = 1.8

1.8 * 100% = 180% (D)
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which expression is equivalent to 7 3/4 - 1/2
    10·1 answer
  • Which polygons can be mapped onto each other similarity transmations
    15·1 answer
  • Corresponding sides of similar triangles are proportional. True False
    15·2 answers
  • Doug drives without backtracking from his apartment to a campsite in another state. After two hours, he is halfway to his destin
    9·1 answer
  • Need help will mark brainliest...
    7·1 answer
  • 8. Which of the following cannot be written as an expression? *
    8·1 answer
  • Complete the following equivalent fraction:<br> =<br> 9<br> 15<br> 36<br> 18<br> 0 000<br> 20<br> 12
    10·1 answer
  • )) Fill in the missing number.<br> ()) 70% of<br> =<br> 56
    11·1 answer
  • Halp pls, check the points it should be worth it :'))
    8·2 answers
  • Find the Value of k that will make the function f(x) continuous everywhere.​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!