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Nat2105 [25]
2 years ago
10

ddle" class="latex-formula">

​
Mathematics
2 answers:
ch4aika [34]2 years ago
4 0
The answer is = x^2-6x-9
a_sh-v [17]2 years ago
3 0

Answer:

Step-by-step explanation:

( x - 3)²

= x² - 2 * x * 3 + 3²

= x² - 6x + 9

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A toy store’s percent of markup is 30%. A model train costs the store $50. Find the markup.
Over [174]

Answer:  $15

Step-by-step explanation:

To find the markup price just multiply 30% by the amount.

30% * 50  

0.3 * 50 = 15

4 0
2 years ago
Read 2 more answers
-3 1/2=1/2 x+1/2 x+x simplified?
Elina [12.6K]
-3 1/2 = 1/2x + 1/2x + x
- 7/2 = 2x
(-7/2) / 2 = x
-7/2 * 1/2 = x
- 7/4 (or - 1 3/4) = x
4 0
3 years ago
You leave a pile of sand in your backyard on a windy day. Every minute the wind blows away 10 percent of the remaining sand. You
Grace [21]

Answer:

  1. 10% of the remaining sand
  2. You had 5 ft of sand
  3. So y=5(.10(x))
8 0
2 years ago
Can anyone solve this, my teacher is still teaching through online learning and geometry is too confusing
malfutka [58]

Answer:

its too small to see

Step-by-step explanation:

7 0
3 years ago
Many people think that a national lobby's successful fight against gun control legislation is reflecting the will of a minority
Andre45 [30]

Answer:

The 95% confidence interval of  the true proportion of all Americans who are in favor of gun control legislation is (0.5471, 0.5779).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence interval 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

A random sample of 4000 citizens yielded 2250 who are in favor of gun control legislation. This means that n = 4000 and \pi = \frac{2250}{4000} = 0.5625

Estimate the true proportion of all Americans who are in favor of gun control legislation using a 95% confidence interval

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5625 - 1.96\sqrt{\frac{0.5625*0.4375}{4000}} = 0.5471

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5625 + 1.96\sqrt{\frac{0.5625*0.4375}{4000}} = 0.5779

The 95% confidence interval of  the true proportion of all Americans who are in favor of gun control legislation is (0.5471, 0.5779).

8 0
3 years ago
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