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Grace [21]
3 years ago
5

Find a report in a newspaper magazine or on the Internet that uses results from a servery. Evaluate how the survey uses ratios t

o reach
conclusion
Mathematics
1 answer:
Alex17521 [72]3 years ago
5 0
To do this,find anything like you mentioned that has a survey. Now a survey must use ratios to get conclusion because you must first figure out how many people out of the entire group are divided to get an answer. Lets say you take a survey over ice cream. You survevy 40 people. 25 people vote vanilla,10 vote chocolate,and 5 vote strawberry. You would use these ideas to conclude that most people like vanilla and not very many people like strawberry. Hope this makes sense :)


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LOGARITHMS, CONIC SECTIONS, SEQUENCES
pochemuha

Answer:

<em>(a) 40 milligrams</em>

<em>(b)  1.21 milligrams</em>

Step-by-step explanation:

<u>Exponential Function</u>

It's commonly used to model real situations in life, like this one proposed in the question where the number of milligrams of a drug D(h) in a patient's bloodstream h hours after the drug is injected is modeled by the following function.

D(h) =40e^{-0.5h}

(a) The initial amount injected to the patient can be found when h=0

D(0) =40e^{-0.5(0)}=40e^{0}=40

Initial amount: 40 milligrams

(b) Let's plug h=7

D(7) =40e^{-0.5(7)}=40e^{-3.5}=1.21

The amount in the bloodstream after 7 hours is 1.21 milligrams

4 0
4 years ago
Solve the pic one and this one as well: <br><br> Solve 2/3(x+6)=7 for x <br><br> Plz and thank you
lidiya [134]
2/3x +12/3 =7
2/3x + 4 =7
2/3x=7-4
2/3x=3
x=3*3/2
x=3

10y + 70= 12y
12y-10y=70
2y=70
y=70/2=35
5 0
3 years ago
___________thousands= 90 hundreds
Darina [25.2K]
0 hundreds<span> is equal to 9000. To find the number of 10's in 9000, simply divide them 9000/10 = 900. Comments; Report</span>
3 0
3 years ago
At a school number of boys: number of girls= 11:9
vredina [299]

составим уравнение
11х=9х+124
2х=124
х=62

проверим ответ
682=558+124

тогда, общее количество детей

682+558=1240

4 0
2 years ago
450 is shared between two workers John and Andrew if John gets 50 more than Andrew how much does John get​
NemiM [27]

450 divided by 2 is 225. 225-50=175. 225+50=275

John has 275 and Andrew has 175.

In order to get this answer, first you divide the whole number by 2. Then you get the number 225. You then have to subtract 50 from 225 because John gets 50 more than Andrew. Then for John, you have to add 50 to 225. To self-check the answer, here is the formula: 175+275=450. Remember that on these kind of word problems, you first divide the whole. Then subtract and add the number that one person gets more than the other person.

3 0
3 years ago
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