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
ehidna [41]
2 years ago
6

Find the surface area of the cone in terms of pi. 15cm 3cm

Mathematics
1 answer:
fgiga [73]2 years ago
3 0

Answer:

SA = 54π cm^2

A

Step-by-step explanation:

{\pi}rs + {\pi} {r}^{2}

radius = 3cm

slant height = 15 cm

follow the formula

You might be interested in
What number is equal to 2.8 - 4 ÷ 4? 02 03 O 14 O 15​
VARVARA [1.3K]

Answer:

1.8

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

2.8 - 4 ÷ 4

<u>Step 2: Evaluate</u>

  1. Division:                                                                                                             2.8 - 1
  2. Subtraction:                                                                                                      1.8
8 0
3 years ago
Which shape has four congruent sides and two sets of parallel sides?
Dovator [93]
It’s a Parallelogram
6 0
2 years ago
Find the value of x that makes A || B.
kumpel [21]

Answer:

the answer is 15 I just took the assessment

3 0
3 years ago
The Westbrook Pharmaceutical Company manufactures atorvastatin pills, designed to lower cholesterol levels. Listed below are the
Sloan [31]

Solution :

Given :

$\mu = 24$

n = 15

$\overline x = 24.89$

s = 0.5902

The hypothesis :

$H_0 : \mu = 25$

$H_a : \mu \neq 25$

This is a 2 tailed test.

The significance level is $95 \% \ ( \alpha =0.05)$

The test statistic :

$Z=\frac{\overline x - \mu}{\frac{\sigma}{\sqrt n}}$

$Z=\frac{24.89-25}{\frac{0.5902}{\sqrt 15}}$

   = -0.72

The p value : The p value for Z = -0.72 is 0.4716

The critical value : the critical value at α = 0.05 is +1.96 to -1.96

The decision rule :

If $Z_{observed} > Z_{critical}$ or if $Z_{observed} < -Z_{critical}$, then reject $H_0$.

Also if p value is less than α, then reject $H_0$.

The decision :

Since the Z falls in between +1.96 and -1.96, we fail to reject the $H_0$. Also since p value is greater than α, we fail to reject  $H_0$.

The conclusion :

There is not sufficient evidence at the 95% significance level to warrant rejection of the claim that the pills come from a population in which the amount of the atorvastatin is equal to 25 mg.

Now calculating the mean and the standard deviation :

$\text{Mean} = \frac{\text{sum of observation}}{\text{total observations}}$

Standard deviation = $\sqrt{\text{variance}}$

Variance = $\frac{\text{sum of squares(SS)}}{n-1}$

Where, SS = $\sum (X - \text{mean})^2$

X                   Mean                 $(X-\text{mean})^2$

24.1               24.89                    0.62

24.4              24.89                     0.24

24.3              24.89                    0.35

24.9             24.89                       0

24.1              24.89                    0.62

24.2             24.89                    1.72

24.1              24.89                    0.04

26.2             24.89                    0.04

25.1              24.89                   0.24

25                24.89                    0.01

24.7             24.89                    0.04

25.1             24.89                    0.04

25.3             24.89                   0.17

25.5             24.89                   0.37

25.5            24.89                   0.37

n                                                   15

Sum                                           373.3

Average                                    24.89

SS                                              4.8775

Variance = $\frac{SS}{n-1}$                       0.348392857

Standard deviation                    0.5902      

3 0
2 years ago
Using cross multiplication, which of the following is the solution to 7/3x = 2/(x+5)?
xenn [34]
-1/35 yeahhhhhhhhhhhhh
7 0
2 years ago
Other questions:
  • Simplify 6 to the negative 3rd power over 6 to the 5th.
    8·2 answers
  • Which rate is equivalent to the unit rate of 12 miles per gallon?
    13·2 answers
  • Help please and thank you!!!
    12·1 answer
  • $0.72 times what equals 7.5%
    9·1 answer
  • Something white that inside of it has flowers. Its a riddle
    15·2 answers
  • WILL MARK BRAINLIEST
    6·2 answers
  • Equation 1:
    5·1 answer
  • Albie wants to build a ramp from his porch to a point on the ground 4 feet away from the base of the porch. What is the length,
    6·2 answers
  • Penny reads 10 pages in 1/3 hour. What is the unit rate for pages per​ hour? For hours per​ page?
    14·1 answer
  • Caroline surveyed 380 of the students in her school about their favorite color. 209 students said their favorite color was blue.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!