help me so i don’t have to do summer school

Answer:

i. This is controlled experiment

ii. C. Whether the course was online or traditional and the statistical software used.

iii. B. The difference between students mean pre-test and post-test scores.

iv. D. 6

Step-by-step explanation:

This is controlled experiment because the university is observing students who take either online course or a standard course. The students have 3 different software available which they can learn. The students are observed based o pre test and post test results.

Answer:

ok so you say I don't know for 10000000000 year's the end. :)

Answer:

(x+5) metres

Step-by-step explanation:

correct question

The rectangle below has an area of x^2+8x+15 square meters and a width of x+3 meters. What expression represents the length of the rectangle?

Area of the rectangle = Length * width

Factorize the area

A(x) =  x^2+8x+15

A(x) = x^2+3x+5x+15

A(x) = x(x+3) + 5(x+3)

A(x) = (x+3)(x+5)

Since the width is x+3, the length of the rectangle will be (x+5) metres

Answer:

the pic is block

Step-by-step explanation:

Answer:

Jack's age =a

Matt's age= 2a+6

a+2a+6 =90

3a +6. =90

3a= 90-6

3a=84

a=28

Answer:

that angle is 45°

so y = 5√3

and × = √2×y

x= √2 × 5√3

x=5√6

Answer:

12 inches

Step-by-step explanation:

3 feet = 1 yard

1/3 yard = 1 foot

1 foot = 12 inches

Answer:

29

Step-by-step explanation:

f(3)=3f(2)-f(1)=3x4-1=11

f(4)=3f(3)-f(2)=3x11-4=29

Answer:

To find the volume of a rectangular prism, multiply its 3 dimensions: length x width x height. The volume is expressed in cubic units.

Answer:

B. ACB AND ACD

Step-by-step explanation:

since you need to prove, you need to show that the figure can work on any 2 triangles… hope it helps.

Let A be the first sequence, and denote by [tex]a_n[/tex] the n-th term in A.

Consider the forward differences of A :

16 - 7 = 9

30 - 16 = 14

49 - 30 = 19

73 - 49 = 24

Call this sequence of first differences B, so that for n ≥ 1,

[tex]b_n=a_{n+1}-a_n[/tex]

where [tex]b_n[/tex] is the n-th term of B.

Now consider the forward differences of B, which is another sequence we'll call C :

14 - 9 = 5

19 - 14 = 5

24 - 19 = 5

Then if [tex]c_n[/tex] is the n-th term of C, we have for all n ≥ 1,

[tex]c_n=b_{n+1}-b_n=5[/tex]

which gives

[tex]b_{n+1} = b_n+5[/tex]

This tells us B is an arithmetic sequence - the first term is 9 and the difference between consecutive terms is 5, so we have for n ≥ 1,

[tex]b_n = 9 + 5(n-1) = 5n + 4[/tex]

Plug this into the recurrence for A :

[tex]a_{n+1} = a_n + b_n = a_n + 5n + 4[/tex]

We don't need to solve for [tex]a_n[/tex], fortunately; we just want the next term, which would be

[tex]a_6 = a_5 + 5^2 + 4 = 73 + 25 + 4 = \boxed{102}[/tex]

Answer:

area = 186.984

Step-by-step explanation:

The 3 rectangular surfaces are simply L * W of each so

left surface = 5.5 * 6.2 = 34.1

right surface = 5.5 * 8.5 = 46.75

bottom surface = 5.5 * 9.8 = 53.9

The front and back are the same so

front = 1/2 base * heigth = 1/2 * 9.8 * 5.33 = 26.117

front + back = 2 * 26.117 = 52.234

total = sum them all up = 34.1 + 46.75 + 53.9 + 52.234 = 186.984

Answer:

Step-by-step explanation:

[tex]\left(6-5x^2\right)\left(x^4-x^3\right)\\\\\mathrm{Apply\:FOIL\:method}:\\\quad \left(a+b\right)\left(c+d\right)=ac+ad+bc+bd\\\\a=6,\:b=-5x^2,\:c=x^4,\:d=-x^3\\\\=6x^4+6\left(-x^3\right)+\left(-5x^2\right)x^4+\left(-5x^2\right)\left(-x^3\right)\\\\\mathrm{Apply\:minus-plus\:rules}\\+\left(-a\right)=-a,\:\:\left(-a\right)\left(-b\right)=ab\\\\=6x^4-6x^3-5x^4x^2+5x^3x^2\\\\Simplify\\\\=-5x^6+5x^5+6x^4-6x^3[/tex]

Answer:

$2.50

Step-by-step explanation:

$10/4 = $2.50

If Brad cuts each log by 12 he will have 48 pieces of cut logs. I hope this helps you, have a great day!

Answer:

48

Step-by-step explanation:

4x12=48

Answer:

5n + 1

Step-by-step explanation:

f(n) + g(n) is just 2n + 1 + 3n , adding the two functions together!

Those expressions combine to 5n + 1 :)

Answer:

4

MARK ME BRAINLIEST CUZ IM DA SMARTEST :))

the answer to that is 4

Answer:

1.) Standard form -            

2.) Center (1,-3)

3.) Radius r=4

4.) Diameter d=8

5.) Circumference 25.12

6.) Area 50.24

7.) Graph              

Step-by-step explanation:

Answer:

Step-by-step explanation:

a systems of equations can be made from the information on the problem

x+y=48

x=2y+3

since x= 2y+3 substitute 2y+3 in the firat equation to get:

(2y+3)+y=48  -> 3y+3=48 -> 3y=45  -> y=15

plug in 15 for y in the second equation to solve for x

x+15 =48 --> x=33

Answer:

Median income has not changed

Mean income has increased

Step-by-step explanation:

Initial number of houses = 6

Earning per household = $40,000

The initial mean :

$(40,000 * 6) / 6 = $40000

Initial median :

40000, 40000, 40000, 40000, 40000, 40000

= 1/2(n+1)th term,

Median = 40000

A 7th household earns 4,000,000

Mean = ((40000*6) + 4,000,000) / 7 = $605,714

Median = 1/2(n+1)th term

40000, 40000, 40000, 40000, 40000, 40000, 4000000

Median = 4th term = 40000

Answer:

6000 milligrams

Step-by-step explanation:

trust

Answer:

1 and 2 is The first one and 3 and 5 is the second one

Answer:

5280

Step-by-step explanation:

Hope this helps!

Answer:

120

Step-by-step explanation:

Answer:

i think 5 + 0.15

Step-by-step explanation:

a^2 is correct

my past answer was incorrect but this 100 percent is correct

Answer:

u got the right answer in the picture

Answer:

zeros are ±2

Step-by-step explanation:

y = x² - 4

this can be factored into (x+2)(x-2)

if you then set each factor equal to zero you will get zeros of ±2

Answer:

domain means x- component I hope you you can identify the domain

Answer:

20

Step-by-step explanation:

x+10=30

x=30-10

x=20

Step-by-step explanation:

check

20+10=30