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
drek231 [11]
3 years ago
9

Find the perimeter and area of a rectangle with a width of 2 feet and a length 3 times as long.

Mathematics
2 answers:
rusak2 [61]3 years ago
5 0

Answer:

Length = Width * 3

Width = 2 ft

Length = 2 ft * 3 = 6 ft

Perimeter = (L * 2) + (W * 2)

P = 16 ft

Area = L * W = 12 square feet

prisoha [69]3 years ago
3 0

Answer:

perimeter = 16 ft

area: 12 ft^2

Step-by-step explanation:

length = 3 * width = 3 * 2 = 6 ft

perimeter =  (L + W) *2 = 16 ft

area: 12 ft^2

You might be interested in
Suppose twenty-two communities have an average of = 123.6 reported cases of larceny per year. assume that σ is known to be 36.8
Delvig [45]
We are given the following data:

Average = m = 123.6
Population standard deviation = σ= psd = 36.8
Sample Size = n = 22

We are to find the confidence intervals for 90%, 95% and 98% confidence level.

Since the population standard deviation is known, and sample size is not too small, we can use standard normal distribution to find the confidence intervals.

Part 1) 90% Confidence Interval
z value for 90% confidence interval = 1.645

Lower end of confidence interval = m-z *\frac{psd}{ \sqrt{n} }
Using the values, we get:
Lower end of confidence interval=123.6-1.645* \frac{36.8}{ \sqrt{22}}=110.69

Upper end of confidence interval = m+z *\frac{psd}{ \sqrt{n} }
Using the values, we get:
Upper end of confidence interval=123.6+1.645* \frac{36.8}{ \sqrt{22}}=136.51

Thus the 90% confidence interval will be (110.69, 136.51)

Part 2) 95% Confidence Interval
z value for 95% confidence interval = 1.96

Lower end of confidence interval = m-z *\frac{psd}{ \sqrt{n} }
Using the values, we get:
Lower end of confidence interval=123.6-1.96* \frac{36.8}{ \sqrt{22}}=108.22

Upper end of confidence interval = m+z *\frac{psd}{ \sqrt{n} }
Using the values, we get:
Upper end of confidence interval=123.6+1.96* \frac{36.8}{ \sqrt{22}}=138.98

Thus the 95% confidence interval will be (108.22, 138.98)

Part 3) 98% Confidence Interval
z value for 98% confidence interval = 2.327

Lower end of confidence interval = m-z *\frac{psd}{ \sqrt{n} }
Using the values, we get:
Lower end of confidence interval=123.6-2.327* \frac{36.8}{ \sqrt{22}}=105.34
Upper end of confidence interval = m+z *\frac{psd}{ \sqrt{n} }
Using the values, we get:
Upper end of confidence interval=123.6+2.327* \frac{36.8}{ \sqrt{22}}=141.86

Thus the 98% confidence interval will be (105.34, 141.86)


Part 4) Comparison of Confidence Intervals
The 90% confidence interval is: (110.69, 136.51)
The 95% confidence interval is: (108.22, 138.98)
The 98% confidence interval is: (105.34, 141.86)

As the level of confidence is increasing, the width of confidence interval is also increasing. So we can conclude that increasing the confidence level increases the width of confidence intervals.
3 0
3 years ago
Please help thanks in advance also best answer get's brainlest
Neko [114]

Answer:

angle t is 55 degrees

Step-by-step explanation:

Here's my work:

Isoscelese means two of the same length sides. A triangle is 180 degrees. 180-70=110

110/2=55 (two because those are the two angles associated with the equal sides)

5 0
2 years ago
Add.<br> -3 + (-4) <br><br> And <br><br> 4 pluse (-3)
Softa [21]

Answer:

-6

Step-by-step explanation:

-3 + (-4) 4 + (-3) is -6 I hope that helps because that what I got

8 0
3 years ago
Julia has 4 gallons 2 quarts of water.Ally needs the same amount of water but only has 12 quarts.How much more water does Ally n
ozzi
Ok so what do we know :
 
4 quarts = 1 gal
Julia has 4gal and 2 quarts or 18 quarts
ally has 12 quarts

so if julia has 18 quarts and ally has 12 that means that ally needs 6 more quarts (or 1gal 2 quarts) so that she and julia can have the same amount
8 0
3 years ago
Read 2 more answers
1. Use the inequality 12≥6(12x+2).
svetoff [14.1K]
The answer would be 72x + 12 but I’m not sure but that’s what I got
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the total price of a $45.79 item when 7% sales tax is added?
    15·2 answers
  • Simplify 2.8d-6+3.8-3.1d
    5·1 answer
  • Arnold purchased 3 apples at the store for $3.90. This weekhe purchased 5 apples for $6.50. Help Arnold analyze the priceof appl
    7·1 answer
  • Find the volume of this cylinder. Use 3 for .
    6·1 answer
  • Please help<br> Me anybody plz
    7·1 answer
  • How would I do this? I did the math and the slope is 3/5 and the y intercept is 76.4 but thats not one of the answers you can ch
    10·1 answer
  • The radius of the dinner table is 12.5mm calculate the area of the dinner table by using 3.14 to two decimal places
    6·1 answer
  • It’s really helpful for me if you answer
    7·2 answers
  • Of the 32 teachers at Devon's high school, 22 are female. What is the ratio of the number of male teachers to the total number o
    15·1 answer
  • The perimeter of a rectangle is 78 cm. If the length is 24 cm, how wide is the rectangle?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!