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
Elena-2011 [213]
3 years ago
9

Write and simplify an expression for the perimeter of the triangle shown below. 4x+8, 3x+12, 6x

Mathematics
1 answer:
Aliun [14]3 years ago
8 0
4x + 8 +3x +12 +6x = perimeter
13x + 20 = perimeter
You might be interested in
Solve the system by the elimination method.<br> 16x-3y=-1<br> -8x+y=3
mojhsa [17]
Send me your email I will send the working.

The answers:
x = 1
y = -5

7 0
3 years ago
Find the product.<br><br> (n + 4)2
Schach [20]

Answer:

n^2+8n+16

Step-by-step explanation:

(n+4)^2

=(n+4) (n+4)

= n^2+4n+4n+16

=n^2+8n+16

5 0
3 years ago
Read 2 more answers
Clarinex is a drug used to treat asthma. In clinical tests of this drug, 1655 patients were treated with 5- mg doses of Clarinex
bagirrra123 [75]

Answer:

z=\frac{0.021 -0.012}{\sqrt{\frac{0.012(1-0.012)}{1655}}}=3.363  

p_v =P(z>3.363)=0.00039  

So the p value obtained was a very low value and using the significance level given \alpha=0.01 we have p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 1% of significance the proportion of interest is significantly higher than 0.012 (1.2%)

Step-by-step explanation:

Data given and notation

n=1655 represent the random sample taken

\hat p=0.021 estimated proportion of interest

p_o=0.012 is the value that we want to test

\alpha=0.01 represent the significance level

Confidence=99% or 0.99

z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that true proportions is higher than 0.012.:  

Null hypothesis:p \leq 0.012  

Alternative hypothesis:p > 0.012  

When we conduct a proportion test we need to use the z statisitic, and the is given by:  

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

The One-Sample Proportion Test is used to assess whether a population proportion \hat p is significantly different from a hypothesized value p_o.

Calculate the statistic  

Since we have all the info requires we can replace in formula (1) like this:  

z=\frac{0.021 -0.012}{\sqrt{\frac{0.012(1-0.012)}{1655}}}=3.363  

Statistical decision  

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.  

The significance level provided \alpha=0.01. The next step would be calculate the p value for this test.  

Since is a right tailed test the p value would be:  

p_v =P(z>3.363)=0.00039  

So the p value obtained was a very low value and using the significance level given \alpha=0.01 we have p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 1% of significance the proportion of interest is significantly higher than 0.012 (1.2%)

3 0
3 years ago
Evaluate -x^2-2x+5 when x=-10
kvv77 [185]
If I'm correct and the ^ stands for multiplication then the answer should be 5.

The picture is my work just ignore the fraction.

6 0
3 years ago
I have to redo this test and I'm stuck on this question. Please help and please show work.
nexus9112 [7]
This is the answer hope this helped u

5 0
2 years ago
Other questions:
  • What helps in determining the reliability of a person wit reguard?
    5·1 answer
  • The sum of two numbers is 57 and the difference is 13 what are the numbers
    12·2 answers
  • A rectangular pyramid measures three feet by four feet at the base, and has a height of seven feet. Find its volume. A. 21 ft3 B
    5·1 answer
  • A chef prepared 7/8 lb of pizza. How many 1/4 pound servings are in 7/8 pounds of pizza?
    12·1 answer
  • Find the distance between the points given.<br><br> (3, 4) and (4, 7)
    15·1 answer
  • -12,60,-300,1500 what are the next two numbers on the pattern
    14·1 answer
  • What is the equation of the line in the gaph?
    8·1 answer
  • 2 of 6
    8·1 answer
  • There are 347 students going on a field trip. Each bus holds 44 students. If each bus costs $95, is the total cost of the buses
    14·1 answer
  • A high school soccer team is going to Columbus to see a professional soccer game. A coordinate grid is superimposed on a highway
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!