A dentist conducts a survey to determine whether a certain brand of mouthwash improves gum health more than others. When his patients come in for their regular cleanings, the dentist surveys them about their mouthwash use and makes a conclusion based on the survey results. The conclusion drawn from the study is because the sample is . In this instance, an study was conducted.

Answer: P = 2716.3448786 or about 2700

Step-by-step explanation:

The amount that need to invest, to the nearest hundred dollar is to be considered as the 2,700.

Since

The interest rate be like = 1.5% = 1.5% / 4 = 0.38%

The time period = 13 * 4 = 52

The future value = $3,300

The PMT is = $0

Now the following formula is used;

So,

= -PV(RATE,NPER,PMT,FV,TYPE)

After applying it, the present value should be $2,700

Learn more about rate here: https://brainly.com/question/24546293

Answer: A: 18 + 45m

Step-by-step explanation:

9(2+5m) = (9 x 2) + (9 x 5m) which gives you: 18 + 45m

Answer:

I think it's 18+45m

Step-by-step explanation:

I just multiplied 9x2 and 9x5.

Answer:

Hope this helped

Answer:

a = 48

b = 132

Step-by-step explanation:

please let me know if you want me to explain this problem

Answer:

a = 48

b = 132

Step-by-step explanation:

42 + 90 = 132

180 - 132 = 48

Answer:

$0.98

Step-by-step explanation:

Given data

Cost of sinuses apples = $9.8 for 10 pound

We want to find the cost per pound

Hence

if 10 pounds cost $9.8

  1 pound will cost x

cross multiply

x= 9.8/10

x= $0.98

Hence a pound will cost $0.98

Answer: 13

Step-by-step explanation:

-4 - 9 = -13

Answer:

circumference = 12.56 cm

Step-by-step explanation:

circumference=2 x radius x Pi

circumference = 2 x 2 x 3.14

circumference = 12.56

Answer:

were is a circle

Step-by-step explanation:

I dont see it

Step-by-step explanation:

3n -2 =37

3n = 39

n = 13

hope this helps

Answer:

B

Step-by-step explanation:

change of a = 65

b = 85

c = 50

==> (B) is correct one.

I take it as you want to learn about the formula.

The quadratic formula is a formula where you can solve x for any quadratic equation in form  ax^2+bx+c=0.

The formula is x= [tex]\frac{-b+-\sqrt{b^2-4ac}}{2a}[/tex].

The +- means + or - for the 2 solution in each equation.

*All above information is what you need to know about the quadratic formula and solve for answer, but I will go a step further in my answer to prove the quadratic formula always work.

[tex]0=ax^2+bx+c[/tex]

[tex]0=(ax+\frac{b}{2})^2-\frac{b^2}{4}+c[/tex] (This step is completing the square)

[tex](ax+\frac{b}{2})^2=\frac{b^2}{4}-c[/tex]

[tex](2ax+b)^2=b^2-4ac[/tex]

[tex]2ax+b=+or-\sqrt{b^2-4ac}[/tex]

[tex]2ax=-b+ or -\sqrt{b^2-4ac}[/tex]

[tex]x=\frac{-b+-\sqrt{b^2-4ac}}{2a}[/tex]

This is my way of proving this formula although there are many other ways to do it too, if there is any questions, feel free to ask me in the comment :-).

Answer:

7

Step-by-step explanation:

41+8=49 49/7=7

Answer:

Step-by-step explanation:

7x-8=41, add 8 to both sides

7x=49, divide both sides by 7

x=7

Answer:

Option 2: y = 6x + -4

Step-by-step explanation:

y = mx + b

y = 6x + -4

Answer:

#2

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

Answer:

4g-5p i think

Step-by-step explanation:

7g-3g=4g

4p-9p=-5p

Answer:

-7 > -10

Step-by-step explanation:

We just have to compare these two numbers. When you're comparing two negative numbers, the smaller number is the bigger one. Ex. -3 is bigger than -6, so we can say that -3 > -6 (-3 is greater than -6). This means that -7 is larger than -10, which allows you to say that -7 > -10.

Answer:

B

Step-by-step explanation:

Answer:

48to41, 48:41, 48/41

Step-by-step explanation:

if this is incorrect try

48to41, 48:41, 41/48

Answer:

x=9

Step-by-step explanation:

Answer:

His commission was $247.50

Step-by-step explanation:

Percentage

Joquan's brother earns a  2.5% commission on the amount he sells.

Last week, he sold $9,900 worth of shoes, thus his commission will be calculated as follows:

2.5% of $9,900 = 2.5 *$9,900 / 100 = $247.50

His commission was $247.50

Answer:

(B) false, because triangle have three altitude.

Answer:

what does ^3 mean i fg *i am going to edit my answer

Step-by-step explanation:

Answer:

p(w) - - - - - - p = 0.5w ; for 0 < w ≤ 8

p(w) - - - - - - p = 4 ; for w < 8 and w ≤ 12

Step-by-step explanation:

Price, p of weight of a toughurt serving :

p(w) - - - - - - p = 0.5w ; for 0 < w ≤ 8

p(w) - - - - - - p = 4 ; for w < 8 and w ≤ 12

The function that models the relationship is:

p(w) = 0.50w  for 0  <  w  ≤ 8

p(w) = 4w   for  8 < w ≤ 12

The self-serve frozen yoghurt store charges:

$0.50 per serving for a serving between 0 and 8 ounces

$4 per serving for any serving greater than 8 ounces and up to 12 ounces.

Let the weight of servings be represented by w

Let the price as a function of the weight be p(w)

For a charge of $0.50 per serving:

p(w)  =  0.50w,  where   0  <  w  ≤ 8

For a charge of $4 per serving:

p(w) = 4w, where 8 < w ≤ 12

Therefore, the function that models the relationship is:

p(w) = 0.50w  for 0  <  w  ≤ 8

p(w) = 4w   for  8 < w ≤ 12

Learn more on functions here: https://brainly.com/question/10439235

Answer:

1) 50/100

2)greater

3)10

Answer:

Step-by-step explanation:

1) 0.50=50/100=5/10=1/2

2) 7.199>7.104 (greater than)

3) 3x(4+1)-5=3(5)-5=15-5=10

Ce clasă ești sa văd daca te pot ajuta

Answer:

over 9000

^^^

Liar.

Step-by-step explanation:

over 9000

^^^

Liar.

Answer: y = 11.25

Step-by-step explanation:

Mi espanol es terrible :l

Todos los angulos terminaran acompletando 90° grados

Entonces hagamos una ecuacion

3y + 4y + y = 90

8y = 90

Divide por 8

y = 11.25

Esta parte no es necesaria

Para ver si es verdad hagamos el math

3(11.25) = 33.75

4(11.25) = 45

y = 11.25

33.75 + 45 + 11.25 = 90

Answer:

it is 0.63

Step-by-step explanation:

plz give me a brainliest plz