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
dangina [55]
2 years ago
15

Im so confused- please help

Mathematics
2 answers:
algol132 years ago
8 0
The perimeter is 36 so, (x+3)+(2x-9)+x = 36 solve and you will get x=12, then substitute x into the triangle you will have 9,12 and 15. Find the area by using 1/2 x base x height and the area is 54 inches^2 . The answer is (b)
Orlov [11]2 years ago
4 0

Step-by-step explanation:

a/q

x + x - 3 + 2x - 9 = 36

4x - 12 = 36

4x = 36 + 12 = 48

x = 48/4 = 12

x = 12

so,

x = 12

x - 3 = 12 - 3 = 9

2x - 9 = 2(12) - 9 = 15

we know,

area = 1/2 × base × height

so,

→ 1/2 × 12 × 9

→ 1 × 6 × 9

→ 54 inches.

HOPE THIS ANSWER HELPS YOU DEAR! TAKE CARE

You might be interested in
Is 16 deductive or inductive reasoning (geometry)
steposvetlana [31]

Answer:

Hi! Number 16 is inductive

The definition of "inductive" is the process of arriving at a conclusion based on a set of observations

Marvin arrived to his conclusion by observing the other dates.

Hope this helped!

5 0
2 years ago
Bob paid $54 for shoes if they were on sale for 10% off what was the original price
PIT_PIT [208]
Bob paid $48.6 that’s the total
8 0
2 years ago
The population standard deviation for the temperature of beers found in Scooter's Tavern is 0.26 degrees. If we want to be 90% c
siniylev [52]

Answer:

19 beers must be sampled.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.9}{2} = 0.05

Now, we have to find z in the Z-table as such z has a p-value of 1 - \alpha.

That is z with a pvalue of 1 - 0.05 = 0.95, so Z = 1.645.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

The population standard deviation for the temperature of beers found in Scooter's Tavern is 0.26 degrees.

This means that \sigma = 0.26

If we want to be 90% confident that the sample mean beer temperature is within 0.1 degrees of the true mean temperature, how many beers must we sample?

This is n for which M = 0.1. So

M = z\frac{\sigma}{\sqrt{n}}

0.1 = 1.645\frac{0.26}{\sqrt{n}}

0.1\sqrt{n} = 1.645*0.26

\sqrt{n} = \frac{1.645*0.26}{0.1}

(\sqrt{n})^2 = (\frac{1.645*0.26}{0.1})^2

n = 18.3

Rounding up:

19 beers must be sampled.

7 0
3 years ago
ITS FOR A TEST PLS HELP
Artemon [7]
I think it’s 4 pairs cause 4 pants is less than 5 shoes and 8 is bigger than 4
8 0
3 years ago
Read 2 more answers
Help please!!!!ASAP! Ill give brainliest! And 50pts!<br><br> What is the value of q?
fomenos
It is c hope this helps :)
4 0
3 years ago
Read 2 more answers
Other questions:
  • We are drawing two cards without replacement from a standard​ 52-card deck. find the probability that we draw at least one red c
    5·1 answer
  • What is the answer to the problem i am very confused...
    14·1 answer
  • 78 students are separated into groups of eight for a field trip how many groups are there the remaining students form a smaller
    5·1 answer
  • How do you model whole number divided by mixed number?
    8·2 answers
  • Greatest common factor 84 and 100
    13·2 answers
  • How do you convert 9 percent to a fraction and a decimal
    12·2 answers
  • Which of the following statements are true regarding functions?
    14·1 answer
  • Help !!! multiply !!
    12·1 answer
  • What is the measure of angle R ?<br> hey guys 50 points! plz help in middle of my final
    7·1 answer
  • Cole and rose are compairing their heights. cole is 7.1 meters tall. Rose is 20 centimeters shorter than cole
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!