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Temka [501]
3 years ago
11

Find f(-2) for the function f (x) = 3x^2-2x+7

Mathematics
1 answer:
barxatty [35]3 years ago
4 0

Answer:

23

Step-by-step explanation:

plug -2 in for x then solve

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Please help me .. thank you ​
KiRa [710]

Step-by-step explanation:

Break down every term into prime factors. ...

Look for factors that appear in every single term to determine the GCF. ...

Factor the GCF out from every term in front of parentheses, and leave the remnants inside the parentheses. ...

Multiply out to simplify each term.

5 0
3 years ago
Read 2 more answers
A national survey of 2000 adult citizens of a nation found that 24​% dreaded​ Valentine's Day. The margin of error for the surve
Goryan [66]

Answer:

The correct option is (A).

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for the population proportion is:

CI=\hat p \pm MOE

The information provided is:

\hat p = 0.24

MOE = 0.089

The 85% confidence interval for the population proportion of adults who dreaded​ Valentine's Day is:

CI=\hat p \pm MOE

     =0.24\pm 0.089\\=(0.151, 0.329)

So, the 85% confidence interval for the population proportion of adults who dreaded​ Valentine's Day is (0.151, 0.329).

The (1 - <em>α</em>)% confidence interval for population parameter implies that there is a (1 - <em>α</em>) probability that the true value of the parameter is included in the interval.

Or, the (1 - <em>α</em>)% confidence interval for the parameter implies that there is (1 - <em>α</em>)% confidence or certainty that the true parameter value is contained in the interval.

So, the 85%  confidence interval for the population proportion, (0.151, 0.329), implies that there is 85% confidence that the proportion of the adult citizens of the nation that dreaded​ Valentine's Day is between 0.151 and 0.329.

Or there is 0.85 probability that the true proportion of the adult citizens of the nation that dreaded​ Valentine's Day is between 0.151 and 0.329.

Thus, the correct option is (A).

7 0
3 years ago
Evaluate A2-B 2 for A = 3 and B = -4.
Wewaii [24]

Answer:

2

Step-by-step explanation:

3(2)-4(2)

7 0
4 years ago
For what value of h makes this equation true? (Just checking my work)
Naddik [55]
I'm assuming that you meant h = 6 for choice B, in which case that would be correct.
7 0
4 years ago
Lillian had 2 two-liter bottles of soda, which she distributed equally between 10 glasses. How much soda was in each glass? Expr
laiz [17]

Step-by-step explanation:

2x2 Liters is being split into 10 glasses.

Therefore, soda per glass =

4 Liters ÷ 10 Glasses

=

\frac{4}{10}liters  \\  =  \frac{2}{5} liters

6 0
3 years ago
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