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2 years ago

1+1=?

Mathematics

2 answers:

poizon [28]2 years ago

8 0

Hmm after great consideration

$\sqrt ln(e^{16} ) \div 2$

miv72 [106K]2 years ago

4 0

Answer:

Step-by-step explanation:

one plus another one is 11

0+1+0+1 = 11

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Which type of triangle has 2 angles that measures 45?

dlinn [17]

Answer: it's obtuse. Yep

Step-by-step explanation:

6 0

3 years ago

Hi watts upp its me the CRACKHEAD who has a sister and doesnt wanna help her so she asks brainly to help her sister instead! Any

Ahat [919]

Answer:

Refexive I think

Step-by-step explanation:

5(3) = 3(5)

x(y) = y(x)

I found this

"Anything equals itself: this is the "reflexive" (reflecting onto itself) property. Also, it doesn't matter which order the equality is in; if x = y, then y = x: this is the "symmetric" (they match) property."

8 0

3 years ago

An article regarding interracial dating and marriage recently appeared in the Washington Post. Of the 1,709 randomly selected ad

VMariaS [17]

Answer:

The 95% confidence interval for the percent of all black adults who would welcome a white person into their families is (0.8222, 0.8978).

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 level of $1-\alpha$ , 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:

323 blacks, 86% of blacks said that they would welcome a white person into their families. This means that $n = 323, p = 0.86$

95% confidence level

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:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.86 - 1.96\sqrt{\frac{0.86*0.14}{323}} = 0.8222$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.86 + 1.96\sqrt{\frac{0.86*0.14}{323}} = 0.8978$

The 95% confidence interval for the percent of all black adults who would welcome a white person into their families is (0.8222, 0.8978).

5 0

3 years ago

Find the product of the monomial and the polynomial. 4a^2b^3*(9a^4b^2-4a^2+3)

Artemon [7]

Answer:

Step-by-step explanation:

4a² b³ * (9a⁴b² - 4a² + 3) = 4a²b³ * 9a⁴b² - 4a²b³*4a² + 4a²b³*3

= 36a²⁺⁴ b³⁺² -16a²⁺²b³ + 12a²b³

= 36a⁶b⁵ - 16a⁴b³ + 12a²b³

6 0

2 years ago

Find the domain of the function.

timurjin [86]

When taking square roots, you can't take square roots of negative roots of negative numbers. So, what will work for the domain of u(x) is what makes u(x) zero or more. We can make an inequality for that.

u(x) ≥ 0.

$\sqrt{9x+27} \geq 0$

9x + 27 ≥ 0 by squaring both sides

9x ≥ -27

x ≥ -3

So the domain of the function is when x ≥ -3 is true.

5 0

3 years ago