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allochka39001 [22]
3 years ago
12

Algebra 2 Help!

Mathematics
2 answers:
m_a_m_a [10]3 years ago
6 0
Base on the question that ask to calculate the sine, cosine, and tangent of 5pi/3 radians and base on my further calculation, I would say that the answer would be <span>sin Θ = -sqrt 3/2; cos Θ = -1/2; tan Θ = -sqrt 3. I hope you are satisfied with my answer and feel free to ask for more if you have question and further clarification </span>
Oksana_A [137]3 years ago
3 0

Answer:

sin(\frac{5\pi }{3})=-\frac{\sqrt{3}}{2} ; cos(\frac{5\pi }{3})=\frac{1}{2} ; tan(\frac{5\pi }{3})=-\sqrt{3}

Step-by-step explanation:

we know that

\pi \ radians=180\ degrees

so

\frac{5\pi }{3}\ radians=300\ degrees

The angle belong to the IV quadrant

therefore

The sine is negative

The cosine is positive

The tangent is negative

360\°-300\°=60\°

so

sin(\frac{5\pi }{3})=-sin(60\°)=-\frac{\sqrt{3}}{2}

cos(\frac{5\pi }{3})=cos(60\°)=\frac{1}{2}

tan(\frac{5\pi }{3})=-tan(60\°)=-\sqrt{3}

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a school sells boxes of cookies each year for a charity fund .the data set shows the number of boxes the 10 families living on w
Thepotemich [5.8K]
0, 1, 1, 2, 2, 2, 2, 3, 3, 5

minimum: 0
maximum: 5
mean: 2.1
median: 2
mode: 2

I think the data have zero skew. Its mean, median, and mode are based on 2. It shows symmetry.
8 0
3 years ago
A soundproofing tile is made of 8 identical solid right pyramids with square bases. The length of the whole tile shown is x inch
mylen [45]

Answer:

Option B ⇒ Area of base of each pyramid :

(\frac{x}{4})^2 in^2

Option A ⇒ Volume of pyramid :

\frac{1}{3} x^{2} \cdot y   cm3

Step-by-step explanation:

One side of tile consists of 4 pyramids and since length of whole tile is x,

So, the base length of each pyramid = \frac{x}{4}

⇒ Area of base of each pyramid = side²

⇒ Area =

(\frac{x}{4})^2 in^2

Volume of square based pyramid :

=(Area of base )\cdot \frac{h}{3}\\=\frac{x^2}{3} cm^3

For 1. The correct Option is B

For 2. The correct option is A

7 0
3 years ago
Read 2 more answers
An independent-measures research study was used to compare two treatment conditions with n= 12 participants in each treatment. T
Maurinko [17]

Answer:

(a) The data indicate a significant difference between the two treatments.

(b) The data do not indicate a significant difference between the two treatments.

(c) The data indicate a significant difference between the two treatments.

Step-by-step explanation:

Null hypothesis: There is no difference between the two treatments.

Alternate hypothesis: There is a significant difference between the two treatments.

Data given:

M1 = 55

M2 = 52

s1^2 = 8

s2^2 = 4

n1 = 12

n2 = 12

Pooled variance = [(n1-1)s1^2 + (n2-1)s2^2] ÷ (n1+n2-2) = [(12-1)8 + (12-1)4] ÷ (12+12-2) = 132 ÷ 22 = 6

Test statistic (t) = (M1 - M2) ÷ sqrt [pooled variance (1/n1 + 1/n2)] = (55 - 52) ÷ sqrt[6(1/6 + 1/6)] = 3 ÷ 1.414 = 2.122

Degree of freedom = n1+n2-2 = 12+12-2 = 22

(a) For a two-tailed test with a 0.05 (5%) significance level and 23 degrees of freedom, the critical values are -2.069 and 2.069.

Conclusion:

Reject the null hypothesis because the test statistic 2.122 falls outside the region bounded by the critical values.

(b) For a two-tailed test with a 0.01 (1%) significance level and 23 degrees of freedom, the critical values are -2.807 and 2.807.

Conclusion:

Fail to reject the null hypothesis because the test statistic 2.122 falls within the region bounded by the critical values.

(c) For a one-tailed test with 0.05 (5%) significance level and 23 degrees of freedom, the critical value is 1.714.

Conclusion:

Reject the null hypothesis because the test statistic 2.122 is greater than the critical value 1.714.

6 0
3 years ago
Point P'P
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Answer:

the answer is 500. hope this helps give me brainlest please.

7 0
3 years ago
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Today, both the soccer team and the basketball team had games . The soccer team plays every 3 days and the basketball team plays
abruzzese [7]

Some time of the month

8 0
3 years ago
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