Use a inequality symbol to compare -3x+7 -10-2

2 answers:

8 0

Hey there,

Let's remember that a (inequality symbol) is things like (<), (>), (≤),(≥), (≠).

So, I believe that (-3x+7) and (-10-2) are separate. So we will find that out :)

Let's first do (-3x+7). As simplifying this expression here, we take that "x" of for a while and just stick to (-3+7).

-3
+ 7
______
4

Let's bring that "x" back, and the answer would be 4x for a while.

So far, 4x is the answer.
_____________________________________________________________

Now, Let's work on the other side.

We are talking about (-10-2)

-10
- 2
_______
 -12

So, by solving the answer to (-10-2), we got -12.

So, let's determine what is greater . . . . .

$What \ is \ greater?$

-12 or 4.

-12 is on the negative side, and the number 4 is positive. This would conclude that 4 is great than -12.

Your correct answer would look like . . .

(-3x+7) > (-10-2)

I really hope this helps you alot.

~Jurgen

ss7ja [257]3 years ago

4 0

-3x+7 > -10-2
The correct answer is

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According to a 2009 Reader's Digest article, people throw away approximately 13% of what they buy at the grocery store. Assume t

OverLord2011 [107]

Answer:

The probability that the sample proportion exceeds 0.16 is 0.2061.

Step-by-step explanation:

We are given that according to a 2009 Reader's Digest article, people throw away approximately 13% of what they buy at the grocery store.

You plan to randomly survey 101 grocery shoppers to investigate their behavior.

Let $\hat p$ = sample proportion

The z-score probability distribution for the sample proportion is given by;

Z = $\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ ~ N(0,1)

where, $\hat p$ = sample population = 0.16

n = sample of grocery shoppers = 101

Now, the probability that the sample proportion exceeds 0.16 is given by = P( $\hat p$ > 0.16)

P( $\hat p$ > 0.16) = P( $\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ > $\frac{0.16-0.13}{\sqrt{\frac{0.16(1-0.16)}{101} } }$ ) = P(Z > 0.82) = 1 - P(Z $\leq$ 0.82)