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salantis [7]
3 years ago
7

In a toothpaste survey,5 of the first 15 people surveyed preferred the same toothpaste.If 30 people will be surveyed altogether,

predict the number of people who will prefer a different toothpaste.Give a reason to support your answer
Mathematics
1 answer:
Gre4nikov [31]3 years ago
8 0

20 people will preferf a different toothpase and 10 people will perfer same.

5 is same and 10 is different.

Total 15 People so that mean if we want to survey 30 people, we will want to 15 x 2. Then that mean result will be duoble.

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Pleaaseee help, i need the answer asap! (WILL GIVE BRAINLIEST!!)
Setler79 [48]

Answer:

A.

Step-by-step explanation:

Substituting the ordered pairs into the equation. 3x - y/4 = 11

For (3,-8)

3 * 3 - (-8)/4

9- (-2) = 11

For (4, 4)

3 * 4 - 4/4

12 - 1 = 11

Both ordered pairs equals to 11, therefore, they're both solutions to the equation.

8 0
3 years ago
The sides of a rectangle are in the ratio 5 : 4. If the perimeter of the rectangle is 360 cm , find its area
djverab [1.8K]

Answer:

Step-by-step explanation:

let, the length is z

thus the ratio will be 5z : 4z

perimeter = 2 (a + b)

360 = 2 ( 5z + 4z )

180 = 9z

z = 20 cm

length = 100 cm and width = 80cm

area = length * width

area = 100*80

area = 8000cm²

4 0
2 years ago
A rope 8 feet long is cut into two pieces. One piece is used to form a circle and the other used to form a square. Find a functi
shtirl [24]
<span>1st piece: x feet
2nd piece: 8-x feet
--------------------------
Use the "x" piece to form a circle:
Circumference = "x".
2(pi)*radius = x

radius = x/(2pi)
So, Area = pi[x/(2)]^2 = x^2/(4pi) = (1/4pi)x^2
=========================================================
Use the 10-x piece to form square:
side = (1/4pi)(10-x)
Area = side^2 = (1/16)(10-x)^2

Hope this helps! :)</span>
8 0
2 years ago
How do you solve You earn 15n 15n dollars for mowing n lawns. How much do you earn for mowing one lawn? Seven lawns?
Rudik [331]

Answer:

$15 for a lawn, $105 for seven lawns.

Step-by-step explanation:

The question is about the direct ratio problem. Logically, you will earn more if you mow more lawn.

The scheme for this ratio is given below:

15 n_________n lawns

   x_________ 1 lawn

x=\frac{15n*1}{n} = 15

You will earn 15 dollars for mowing a lawn


When you mow 7 lawns, the scheme will be in this manner:

15 n__________n lawns

    x__________7 lawns

x=\frac{15n*7}{n}=105

You will earn 105 dollars

8 0
3 years ago
What is meant by the term outlier? What should you do with an outlier?
saul85 [17]

Outliers are data that are in a very far distance from other values in a set of data

Once an outlier is detected in a set of data, we can do the following to them:

  • Discard the outlier
  • Change the value of the outlier with another value within close range
  • Consider the distribution given

We may have a set of data where some of the <em>values are far in distance from the majority of the data</em>. The set of such data are known as an outlier.

For example, give the set of data;

  • 2, 4, 7, 45, 8

45 can be considered as an outlier since the <em>distance of data</em><em> to all other data is</em><em> large</em><em>.</em>

Once an outlier is detected in a set of data, we can do the following to them:

  • Discard the outlier
  • Change the value of the outlier with another value within close range
  • Consider the distribution given

Learn more here: brainly.com/question/23258173

7 0
3 years ago
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