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Daniel [21]
2 years ago
6

as people leave the restaurant one evening, 20 people are surveyed at random. Eight people say they usually order dessert when t

hey eat out. Was the sample obtained using a valid sampling method? if so, what percent of those surveyed say they usually do not order dessert when they eat put? explain why.
Mathematics
1 answer:
TEA [102]2 years ago
3 0

Answer:

yes, 60%

Step-by-step explanation:

Step-bu-step explanation.....

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4x/3 + 2(3- x) = 5 Solve for x as an FRACTION
forsale [732]

Answer:

<h2>The answer is .... <u><em> x = 3/2</em></u><em> </em>and if you want to write it as a mixed fraction i will be x= <u><em>1 and 1/2</em></u></h2>

Step-by-step explanation:

Hope this Helped :)

6 0
3 years ago
How would you simplify <br>(3+i)(4+2i)?​
const2013 [10]

Answer:

<h2>(3 + i)(4 + 2i) = 10 + 10i</h2>

Step-by-step explanation:

Use FOIL: (a + b)(c + d) = ac + ad + bc + bd

and i² = -1

(3+i)(4+2i)\\\\=(3)(4)+(3)(2i)+(i)(4)+(i)(2i)\\\\=12+6i+4i+2i^2\qquad\text{combine like terms}\\\\=(12-2)+(6i+4i)\\\\=10+10i

7 0
3 years ago
Read 2 more answers
What does it mean for the ratio of surface area to volume to be small or large? Which ratios are better economically?
ValentinkaMS [17]
The goal is to get the volume as large as possible while the surface area is made as small as possible. Why? Because the volume is the amount of stuff you can hold and the surface area is the amount of material to make the container.

Consider an example of making a cup. The inside portion is the amount the cup can hold. The more liquid, the better. The cup makers want to use as little material as possible so that they reduce costs. If the cup makers produce a cup that has volume of 10 cubic inches and uses 10 square inches of material, then the surface area to volume ratio is 10:10 which reduces to 1:1. A more efficient cup is made if that same volume (10 cubic inches) can be made for less material say 5 square inches to make the ratio now 5:10 which reduces to 1:2. 

So in summary, reducing the surface area to volume ratio will make more sense economically as the company makes more money while reducing costs (therefore increasing overall profit)
3 0
3 years ago
Read 2 more answers
F(x)=4x^2+3x+13<br><br> Find f(1)
Pani-rosa [81]

Answer:

f(1) = 42

Step-by-step explanation:

Step 1: Switch all x out to 1 for f(1) which would look like this: f(1)=4(1)^2+3(1)+13

Step 2: You would then simplify it starting with 4(1)^2 which would equal 4 squared which equals 16.

Step 3: After simplifying you would have f(1)=16+3+13

Step 4: You then just add and get 42

Hope this helped :D

7 0
3 years ago
What number should be added to both sides of the equation to complete the square?<br> x^2+ 8x = 4
Sonbull [250]

Answer:

16

Step-by-step explanation:

use the formula (b/2)^2 to find what number to add to each side of the equation

3 0
3 years ago
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