A pattern calls for 2 1 over 4 yards of material and 1 1 over 4 yards of lining. How much total fabric is needed

Find the square. (3m + 3)2

olya-2409 [2.1K]

Answer:

9m^2 + 18m + 9

Step-by-step explanation:

(3m + 3)2

Square ;

(a + b)^2 = a2 + b2 + 2ab

(3m + 3)2

= (3m)^2 + (3)^2 + 2 (3m)(3)

= 9m^2 + 9 + 18m

= 9m^2 + 18m + 9

5 0

3 years ago

An animal shelter spends $4.50 per day to care for each bird and $8.50 per day to care for each cat. Wyatt noticed that the shel

rodikova [14]

Answer:

16cats and 19 birds

Step-by-step explanation:

if we say that x is birds and y is cats we can say that:

4.5x+8.5y=221.5 ( the amount birds and cat both need)

y+x =35 (number of cats and cats)

x=35-y

4.5(35-y) +8.5y= 221.5

157.5-4.5y +8.5y =221.5

4y=64

y= 16

16+x=35

x=19

7 0

3 years ago

What is the midpoint of the line segment with endpoints (–1, 7) and (3, –3)?

Kipish [7]

The coordinates consist of x coordinate and y coordinate
(x₁,y₁) = (-1,7)
(x₂,y₂) = (3,-3)

To find the midpoint of x coordinate, use this following formula
x midpoint = (x₁ + x₂)/2
x midpoint = (-1 + 3) / 2
x midpoint = 2/2
x midpoint = 1

To find the midpoint of y coordinate, use this following formula
y midpoint = (y₁ + y₂)/2
y midpoint = (7 + (-3))/2
y midpoint = (7 - 3)/2
y midpoint = 4/2
y midpoint = 2

ANSWER
The midpoint is (1,2)

6 0

3 years ago

A political scientist wants to know how college students feel about the Social Security system. She obtains a list of the 3456 u

Marina CMI [18]

Answer:

For this case the population is described as:

All the college students

And the political have a list of 3456 undergraduates at her college for the sampling frame.

The sample would be the 104 students who return the survey.

Is important to notice that since he know the information about her college she can apply inference about the parameter of interest just at her college and not about all the possible students of college.

Step-by-step explanation:

For this case the population is described as:

All the college students

And the political have a list of 3456 undergraduates at her college for the sampling frame.

The sample would be the 104 students who return the survey.

Is important to notice that since he know the information about her college she can apply inference about the parameter of interest just at her college and not about all the possible students of college.

For this case we can also find the non reponse rate since we know that the total of questionnaires are 250 and she got back just 104 answered

$Non-resp. = \frac{250-104}{250} = \frac{146}{250}= 0.584$

So we have a non response rate of 58.4 %

4 0

3 years ago

Please helppp! I don’t know the answer

disa [49]

Answer:

250x+140=y

Step-by-step explanation:

so amount earned for 10 hours of work is 250

8 0

3 years ago