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Natasha2012 [34]
3 years ago
11

A polling organization contacts 1657 undergraduates who attend a university and live in the United States and asks whether or no

t they had spent more than $200 on food in the last month.
Mathematics
1 answer:
Dimas [21]3 years ago
7 0

Step-by-step explanation:

gyJfdgruhj jdjgldnldnpf m xlhsubdkvakvisbd bsojdk slvdm fmbisgdo jSvks

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if alpha and beta are the roots of the equation 2 x square - 7 x - 3 is equal to 0 find alpha + beta​
Lorico [155]

Answer:

Values for alpha and beta are 0.5 and 3.

Step-by-step explanation:

2x² - 7x - 3 = 0

2x² - 7x - 3 = (2x - 1 )(x - 3)

∴ (2x - 1 )(x - 3) = 0

The only way to get zero by multiplying two values together, is if one of those values is qual to zero. Therefore, either (2x - 1 )=0, or (x - 3)=0.

If (2x - 1 )=0

∴2x=1

∴x=0.5

If (x - 3)=0

∴x=3

We have two values for x. These values represent alpha and beta.

<em>(BTW - I'm not sure from the phrasing of your question whether or not you just want to find the values or whether you want to find the sum of the values (I don't know if you used '+' to mean 'and' or 'plus'), but if you do want to find the sum, it's of course just 0.5+3= 3.5.)</em>

8 0
3 years ago
What is the square root of 1,459,585 and show work
pav-90 [236]
Have fun with that. my brain hurts looking at that question

4 0
3 years ago
What is &lt;2 if &lt;4 is 35
Rudiy27

Answer:

2 is 17.5

Step-by-step explanation:

bc the half of 4 is 2 since 4 is 35 we have to find the half of 35 and how we do that is by dividing it by 2.

35%2=17.5 so 2 is equal 17.5 so <2 is 17.5

4 0
3 years ago
Write 3^-4 as a fraction
Ad libitum [116K]

Answer: 1/3^4 or 1 over 3 fourths beacuse you need to just flip it to get the exponent to be positive. 3^-4 is basically 3^-4 over 1.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
All isotopes of technetium are radioactive, but they have widely varying half-lives. If an 800.0 g sample of technetium-99 decay
erica [24]
The formula for A = Ao (1/2) ^ t/h
So sub in.
100 = 800 (1/2) ^ 639,000/?
That's all i can do lol

3 0
4 years ago
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