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matrenka [14]
2 years ago
10

GIVING BRAINLIEST

Mathematics
1 answer:
nalin [4]2 years ago
5 0

Answer:

26 degrees

Step-by-step explanation:

The attached image shows how I interpret this question, and I assume you're meant to use trigonometry to solve.

From the perspective of the angle, we have a relationship between the opposite side, the hypotenuse, and the angle. Because the 2 sides are the opposite and the hypotenuse, we need the sine function, and because the angle is the unknown, we need the inverse sine function.

(soh cah toa)

sin(x)=\frac{opposite}{hypotenuse}\\\\sin^{-1}(\frac{opposite}{hypotenuse})=x

Now, just plug in the 2 known values and solve for the unknown:

sin^{-1}(\frac{1.1}{2.5})=x\\\\sin^{-1}(0.44)=x\\\\x=26.1039

The angle is 26 degrees, and you can check that by doing it in reverse:

sin(26.1039)=\frac{1.1}{2.5}\\\\sin(26.1039)=0.44\\\\0.44=0.44

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Given two dependent random samples with the following results:
Naddik [55]

Answer:

The null hypothesis will not be rejected.

Step-by-step explanation:

The hypothesis for the test is:

<em>H</em>₀: There is no difference between the two population means, i.e. <em>d</em> = 0.

<em>Hₐ</em>: There is a significant difference between the two population means, i.e. <em>d</em> ≠ 0.

Consider the Excel output attached.

The mean of the differences is, \bar d=-2.75.

The standard deviation of the differences is, S_{d}=4.268.

Compute the test statistic as follows:

t=\frac{\bar d}{S_{d}/\sqrt{n}}=\frac{-2.75}{4.268/\sqrt{8}}=-1.82

The degrees of freedom is, n - 1 = 7.

Compute the <em>p</em>-value as follows:

p-value=2\cdot P(t_{7}

The decision rule is:

The null hypothesis will be rejected if the p-value of the test is less than the significance level.

<em>p</em>-value = 0.112 > α = 0.02.

The null hypothesis will not be rejected.

4 0
3 years ago
What is the equation of the line that is parallel to the line x = -2 and passes through the point (-5, 4)?
wariber [46]

Answer:

x= -5

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
214 out of 450 students went to a concert, what percent did not go?
Vera_Pavlovna [14]

Answer:

.75% .0075 of the people that went to the concert said they would go if they could not see the band again. To find this you simply divide 9 by 1200, which equals .0075

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
borrow $5 from her father to buy items at a gas station Rose also borrowed $11 more from her brother Rose pays back $3.50 to her
Maru [420]
You would use the # line to add and subtract from Rose's total. The remaining amount that Rose still owes is $3. 

4 0
2 years ago
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Find the quotient of 48a^4-16a^2-32/8a^2-8
Novay_Z [31]
We know that if we had
8/6=2/2 times 4/3=1 times 4/3=4/3
find common factors in top and obttom
factor
48a^4-16a^2-32=(16)(a-1)(a+1)(3a^2+2)
8a^2-8=8(a-1)(a+1)
so we have
\frac{48a^4-16a^2-32}{8a^2-8} = \frac{(2)(8)(a-1)(a+1)(3a^2+2)}{(8)(a-1)(a+1)}= (\frac{8}{8}) (\frac{a-1}{a-1})( \frac{a+1}{a+1}) ( \frac{(2)(3a^{2}+2)}{1})=(2)(3a^2+2)=6a^2+4


answer is 6a^2+4
5 0
2 years ago
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