Select the correct expressions. Identify the equivalent expressions of 4(2x + x – 3) – 3x + 3 by substituting x = 2 and x = 3.

Answer: B

Step-by-step explanation:

from edge

Answer:

B

Step-by-step explanation:

Edge 2022

Answer:

A 24..............................

Answer:

A, B, and C show linear relationships.

Step-by-step explanation:

For something to have a linear relationship, it CANNOT have an x-value with two different y-values.  

To determine if something has two y-values for one x-value, pass a line (like a pencil) over the graph.  If there are any places where the line crosses the graph twice, the graph you have is not linear.

Answer:

H0: Ud >= 0

H1: UD < 0

Step-by-step explanation:

We have the sample size = 81

Mean of x = 107

The alpha level was not given for me to help you calculate further.

This researcher wants to know if increasing reading speed brings about a decrease in the comprehension of the reader.

The hypothesis are

Null hypothesis

H0: U >= 0

Alternative hypothesis

H1: U < 0

Thank you

Answer: I’m pretty sure the common factor is 15x3y

Answer:

Answer: I’m pretty sure the common factor is 15x3yStep-by-step explanation:

9514 1404 393

Answer:

  £592 for 16 boxes

Step-by-step explanation:

The classroom floor area is ...

  A = LW = (8.8 m)(2.2 m) = 19.36 m²

The cupboard floor area is ...

  A = (2.3 m)(2.1 m) = 4.83 m²

Then the total area to be covered is ...

  19.36 m² +4.83 m² = 24.19 m²

At 1.6 m² per box, the number of boxes required is ...

  (24.19 m²)/(1.6 m²/box) = 15.12 boxes

If we assume we can only purchase whole boxes, we need to purchase 16 boxes to cover the floor. The cost will be ...

  (16 boxes)(£37/box) = £592 . . . . cost of laminate to replace the floor

Answer:

the answer is 11.25

Step-by-step explanation:

Convert the proper fraction to decimal: Divide the numerator by the denominator

7 ÷ 20 = 0.35

Add this decimal number to the whole number of the mixed fraction

11 + 0.35 = 11.35

[tex]\huge\text{Hey there!}[/tex]

[tex]\mathsf{z^3 - 8 = 0}\\\text{ADD 8 to BOTH SIDES}\\\mathsf{z^3 - 8 + 8 = 0 + 8}\\\text{Cancel\ out: -8 + 8 because that gives you 0}\\\text{Keep: 0 + 8 because it gives 8 and we need that to solve for your z value}\\\mathsf{z^3=8}\\\text{TAKE the CUBE ROOT}\\\mathsf{z = 8{^(\dfrac{1}{3})}}\\\\\text{SIMPLIFY the EQUATION above and you have your z value}\uparrow\\\\\boxed{\boxed{\large\text{Answer: \bf z = 2}}}\huge\checkmark[/tex]

[tex]\textsf{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Answer:

852 students walking to school

Step-by-step explanation:

Lets start with a simple example so you can get it

if 60% of 100 students walk to school that means

60 students walk to school... right??

so lets simplify it more that means you have multiplied 100 (students) by 60%

or [tex]\frac{60}{100}[/tex]  (note: you can say that 60% is equal to [tex]\frac{60}{100}[/tex] )

so the problem told 60% of 1420 students walk to school that means we should

do this:     [tex]1420*\frac{60}{100} = 852[/tex]

Answer:

852 walk to school

Step-by-step explanation:

i got this because i divided the 1420 into 10 which became a 142, multiply by 6 and you get 852

also you could

it is really simple also, all you have to do is multiply the number of student, S times the precent of students who walk, so s times w, which is 60 precent turend into .6 precent so 1420 x .6

Answer:

=2x2+7x+5

Step-by-step explanation:

Answer:

2x^2 + 7 x + 5

Step-by-step explanation:

I can't waste time giving an explanation if you're timed ;) if this helped you, leave a brainliest! :)

Answer:

y = -x +2

Step-by-step explanation:

First let's find the slope.

(-1,3) and (4,-2)

3 - -2/ -1 - 4 = 5/-5 = -1

Slope = -1

Now let's use slope intercept form:

y1-y2=m(x1-x2)

Let's plug in our slope for m.

y1-y2= -1 (x1-x2)

And now let's substitute y2 and x2 for one of our points, I'll use (4,-2)

y1+2 = -1(x1- 4)

y= -x + 4 -2

y = -x +2

3 + 2 + 5/6

= 5 + 5/6

= 5 + 0.83 (convert 5/6 to decimal form)

= 5.83

Answer:

D) x = 8

Step-by-step explanation:

The information given states that ABCD is similar to RSTU.

Line BC is similar to Line ST. ST is 2 times larger that BC.

Line AB is similar to Line RS. RS must be 2 times larger than AB as well, so multiply 4 x 2 to get x = 8.

Hope it helps!!!

Answer:

9n?

Step-by-step explanation:

i think its 9n its been a while ok

Answer:

9 x n

Step-by-step explanation:

The ¨product¨ is the answer to a multiplication problem, so that requires you to multiply 9 and n.

Answer:

x=8

Step-by-step explanation:

Answer:

~77°

Step-by-step explanation:

cosQ = 9/40

inverse cosine(9/40) ≈ 77° = Q

Answer:

width = 4

Step-by-step explanation:

864 = 27 x 8 x w

w = 4

Answer:

8 ft

Step-by-step explanation:

i forgot what law it was called srry

Answer:

go everything youve learnt from grade 3 come right up

Step-by-step explanation:

sometimes its knowing the simply formulas thatll get you through

Answer:

Each of her friends ate 7/32 of the cake.

Step-by-step explanation:

Given that Fon baked a cake and ate 1/8 of it, and then she shared the remaining cake equally to her 4 friends, to determine what fraction of the whole cake did each of her friends received, the following calculation must be performed:

(8 - 1/8) / 4 = X

(7/8) / 4 = X

(28/32) / 4 = X

7/32 = X

Thus, each of her friends ate 7/32 of the cake.

Answer:

a)

The point estimate is 0.368.

The 95 percent confidence interval for the proportion of all U.K. television ads that use humor is (0.321, 0.415).

b)

The point estimate is 0.262.

The 95 percent confidence interval for the proportion of all U.S. television ads that use humor is (0.222, 0.302).

c)

Yes, because the lower bound of the confidence interval for UK proportions is higher than the upper bound of the confidence interval for US proportions.

Step-by-step explanation:

(a) Suppose that a random sample of 400 television ads in the United Kingdom reveals that 147 of these ads use humor.

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which

z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].

Sample of 400:

This means that [tex]n = 400[/tex]

Point estimate:

[tex]\pi = \frac{147}{400} = 0.368[/tex]

The point estimate is 0.368.

95% confidence level

So [tex]\alpha = 0.05[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].

The lower limit of this interval is:

[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.368 - 1.96\sqrt{\frac{0.368*0.632}{400}} = 0.321[/tex]

The upper limit of this interval is:

[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.368 + 1.96\sqrt{\frac{0.368*0.632}{400}} = 0.415[/tex]

The 95 percent confidence interval for the proportion of all U.K. television ads that use humor is (0.321, 0.415).

(b) Suppose a random sample of 455 television ads in the United States reveals that 119 of these ads use humor.

Sample of 455:

This means that [tex]n = 455[/tex]

Point estimate:

[tex]\pi = \frac{119}{455} = 0.262[/tex]

The point estimate is 0.262.

95% confidence level

So [tex]\alpha = 0.05[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].

The lower limit of this interval is:

[tex]\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.262 + 1.96\sqrt{\frac{0.262*0.738}{455}} = 0.222[/tex]

The upper limit of this interval is:

[tex]\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.262 + 1.96\sqrt{\frac{0.262*0.738}{455}} = 0.302[/tex]

The 95 percent confidence interval for the proportion of all U.S. television ads that use humor is (0.222, 0.302).

(c) Do the confidence intervals you computed in parts a and b suggest that a greater percentage of U.K. ads use humor?

Yes, because the lower bound of the confidence interval for UK proportions is higher than the upper bound of the confidence interval for US proportions.

Answer:

orbit

Step-by-step explanation:

Answer: the answer is

C.) -2

Step-by-step explanation:

I got this answer by simply looking at the pattern. It goes -2,-3,2,3, and then starts over, So the answer would have to be -2. I hope this helped and good luck:))

The value of x that would make the relation a function is x = 3.

Option D is the correct answer.

A function is a relationship between inputs where each input is related to exactly one output.

Example:

f(x) = 2x + 1

f(1) = 2 + 1 = 3

f(2) = 2 x 2 + 1 = 4 + 1 = 5

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have,

{ (-2, -3), (-3, -2), (2, 3), (3, 2), (x, 2) }

A function can not be one-to-many.

A function can be many-to-one and one-to-one

Now,

If x = 2, -3, -2 we get one-to-many.

But if x = 3 we get one-to-one.

Thus,

x = 3.

Learn more about functions here:

https://brainly.com/question/28533782

#SPJ2

Answer:

48

Step-by-step explanation: surface area = 2 (lw + hl + hw)

2 ( 2 x2 + 5x2 + 5x2)

2 (4+10+10)

2(24)

48 cm

Step-by-step explanation:

Answer:

          WHAT THE OTHER PERSON SAID

Step-by-step explanation: