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
dalvyx [7]
3 years ago
12

A survey was taken of twenty dentists about Sparkly toothpaste. Sixteen of the dentists recommended Sparkly toothpaste to their

patients. The same survey was given to dentists in a different state. This time they asked thirty dentists. Twenty–four of those dentists recommended Sparkly toothpaste to their patients. If this pattern continues, how many dentists out of fifty would recommend Sparkly toothpaste?
Mathematics
1 answer:
Bas_tet [7]3 years ago
5 0

Answer: There are 40 dentists who would recommended Sparkly toothpaste to their patients .

Step-by-step explanation:

Since we have given that

Out of 20 dentists, a survey was taken of about Sparkly toothpaste,

Number of dentists recommended Sparkly toothpaste to their patients = 16

Percentage of dentists who recommended Sparkly toothpaste to their patients be

\frac{16}{20}\times 100=80\%

Out of 30 dentists, a survey was taken of about Sparkly toothpaste,

Number of dentists recommended Sparkly toothpaste to their patients = 24

Similarly,

Percentage of dentists who recommended Sparkly toothpaste to their patients be

\frac{24}{30}\times 100=80\%

Now, we have asked to find the number of dentists recommended Sparkly toothpaste to their patients if survey was taken of 50 dentists.

As we have seen that there is always 80% of total number of dentists surveyed have recommended Sparkly toothpaste to their patients ,

so, According to this pattern , we get that

\frac{80}{100}\times 50=40

Hence, there are 40 dentists who would recommended Sparkly toothpaste to their patients .


You might be interested in
Harry has 20 sweets. He gives 7 of the sweets to Nadia. What fraction of the 20 sweets does Harry have now?
olganol [36]

Answer: 13

Step-by-step explanation:

1. Harry has 20/20 sweets

2. Nadia takes 7/20 sweets

3. Your left with 13/20

3 0
3 years ago
Read 2 more answers
Apple weights in an orchard are normally distributed. from a sample farmer fred determines the mean weight of a box of apples to
Serjik [45]
<span>Mean = 270 Standard deviation = 10 x = 255 Formula for z-score, z = (x - mean)/SD z = (255 - 270) / 10 => z = -15 / 10 => z = -1.5 So by referring to z-table, -1.5 correlates to 0.0668 that implies to 0.07 So 7% of the boxes of Apples weight less than 255oz. The percentage of boxes is in the range of 255 oz and 270 oz, Now calculating the requiring percentage 50% - 7% = 43%</span>
7 0
3 years ago
Read 2 more answers
For what values of $x$ is it true that $x^2 - 5x - 4 \le 10$? Express your answer in interval notation.
dybincka [34]

Answer:

  x ∈ [-2, 7]

Step-by-step explanation:

The given equation ...

  x^2 -5x -4 ≤ 10

can be rewritten as ...

  x^2 -5x -14 ≤ 0

and factored as ...

  (x +2)(x -7) ≤ 0

Clearly, the "or equal to" condition will be met when x=-2 and x=7. For values of x between these numbers, one factor is negative and the other is positive. Hence the product will be negative. So, numbers in that interval are the solution set.

  x ∈ [-2, 7]

5 0
3 years ago
Hi there! i going to fail if you don´t answer :D :D
NARA [144]

Answer:

it will be 1/2

Step-by-step explanation:

because x×y={(6,2), (6, 8),(9,2), (9, 8)}

5 0
3 years ago
Which figure has an orthocenter outside the triangle? A triangle has angle measures of 30, 75, and 75 degrees. A triangle has an
zlopas [31]

Answer:

A triangle has angle measures of 45, 110, and 25 degrees would has an orthocenter outside the triangle.

Hope this helps!

:)

8 0
3 years ago
Read 2 more answers
Other questions:
  • Please help me fast thx:)
    12·1 answer
  • Which choice could repersent the surface area of a pyramid
    12·1 answer
  • Evaluate the expression when p = 9.3 and q = –2.1.
    11·1 answer
  • Which aproximation is better for π 22/7 or 3.141592..... Explain.
    14·1 answer
  • I NEED THIS ASAP about the Pythagorean
    10·1 answer
  • Please help if you can.​
    7·1 answer
  • The second part is thiss
    11·1 answer
  • 3. What is the range of the quadratic function shown on the graph below?<br> ده ستA:
    13·1 answer
  • What is the differences between normal and perpendicular?
    10·1 answer
  • Cellular phone service that charges per-minute will charge $15 for 70 minutes. How much would 1077 minutes cost?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!