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dem82 [27]
3 years ago
15

What is the domain of the function represented by this graph? the graph of a quadratic function y = x^2 – 4 with a minimum value

at the point (0,-4) A. all real numbers B. -2 ≤ x ≤ 2 C. x ≥ 4 D. x ≤ 0
Mathematics
2 answers:
snow_tiger [21]3 years ago
6 0

Answer: all real numbers

Step-by-step explanation:

Kobotan [32]3 years ago
4 0

Answer:

A

Step-by-step explanation:

In this function, the domain, or the x value, has no limits. You can substitue any value of x into (x^2-4) and any result is valid.

I hope this helped!

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Suppose the apartment building has 100 apartments on each floor write the number of apartments in the building for each number o
yan [13]
It would be 100 apartments on each floor level.
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3 years ago
Work out the value of (1.7 × 10⁴) × (8.5 × 10^-2) give your answer in standard form
kogti [31]

Answer:

Step-by-step explanation:

10^4 = 10000

1.7 × 10^4 = 1.7 × 10000

= 17000

10^-2 = 1/10^2= 1/100

8.5 × 10^-2 = 8.5 × 1/100

= 17/200

Final answer = 17000 × 17 / 200

= 1445

Plz mark it as brainliest

7 0
3 years ago
Pls help quick i beg please,Complete the explanation blank and blank 1 whole stirp could represent 1 blank and the 1/3 strip cou
yKpoI14uk [10]

Answer:

Feet and yards; the 1 whole strip could represent 1 yd. and the \frac{1}{3} strip could represent feet.

4 0
3 years ago
Intellectual development (Perry) scores were determined for 21 students in a first-year, project-based design course. (Recall th
Anit [1.1K]

Answer:

The 99% confidence interval is (3.0493, 3.4907).

We are 99% sure that the true mean of the students Perry score is in the above interval.

Step-by-step explanation:

Our sample size is 21.

The first step to solve this problem is finding our degrees of freedom, that is, the sample size subtracted by 1. So

df = 21-1 = 20.

Then, we need to subtract one by the confidence level \alpha and divide by 2. So:

\frac{1-0.99}{2} = \frac{0.01}{2} = 0.005

Now, we need our answers from both steps above to find a value T in the t-distribution table. So, with 20 and 0.005 in the two-sided t-distribution table, we have T = 2.528

Now, we find the standard deviation of the sample. This is the division of the standard deviation by the square root of the sample size. So

s = \frac{0.40}{\sqrt{21}} = 0.0873

Now, we multiply T and s

M = 2.528*0.0873 = 0.2207

Then

The lower end of the interval is the mean subtracted by M. So:

L = 3.27 - 0.2207 = 3.0493

The upper end of the interval is the mean added to M. So:

LCL = 3.27 + 0.2207 = 3.4907

The 99% confidence interval is (3.0493, 3.4907).

Interpretation:

We are 99% sure that the true mean of the students Perry score is in the above interval.

7 0
3 years ago
There are 3.9 milligrams of calcium in a ½ ounce of cooked chicken. How many milligrams are in 6 ounces?
snow_tiger [21]

Answer:

there are 46.80 milligrams in 6 ounces.

Step-by-step explanation:

3 0
3 years ago
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