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Dmitry [639]
3 years ago
15

Use the power-reducing formulas to rewrite each of the expressions in terms of the first power of the cosine. Sin^4cos^4

Mathematics
1 answer:
Katen [24]3 years ago
6 0

Answer:

1/128 * (3 - 4cos2x + cos4x)

Step-by-step explanation:

See attachment for steps

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At Scobee Middle School, 35% of the seventh graders ride the bus to school. If there are 320 seventh graders, how many 7th grade
anzhelika [568]

Answer: 112 7th graders ride the bus .

Step-by-step explanation:

Given: The proportion of 7th graders ride the bus to school= 35% = 0.35  [to remove % we divide number by 100]

If there are 320 seventh graders, then the number of 7th graders ride the bus = 320 x (proportion of 7th graders ride the bus to school)

0.35 \times 320

= 112

Hence, 112 7th graders ride the bus .

6 0
3 years ago
Julio and Rosa are as old as the values ​​of x obtained by solving the equation (x + 8) (x-3) +4 (x + 2) = 2 (x-4) * 2-11x. If j
finlep [7]

Answer:

10 and 13

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
University dean is interested in determining the proportion of students who receive some sort offinancial aid. rather than exami
vladimir2022 [97]
The confidence interval is
0.59\pm0.081

We first find p, our sample proportion.  118/200 = 0.59.

Next we find the z-score associated with this level of confidence:
Convert 98% to a decimal: 98% = 98/100 = 0.98
Subtract from 1:  1-0.98 = 0.02
Divide by 2:  0.02/2 = 0.01
Subtract from 1:  1-0.01 = 0.99

Using a z-table (http://www.z-table.com) we see that this value is associated with a z-score of 2.33.

The margin of error (ME) is given by
ME=z\sqrt{\frac{p(1-p)}{n}}
\\
\\=2.33\sqrt{\frac{0.59(1-0.59)}{200}}=2.33\sqrt{\frac{0.2419}{200}}\approx0.081

This gives us the confidence interval 
0.59\pm0.081
8 0
3 years ago
Find the​ x- and​ y-intercepts of the graph of the given equation.<br> -4x + 3y = -3.6
tino4ka555 [31]

Answer:

x intercept is (0.9,0)

y intercept is (0,-1.2)

Step-by-step explanation:

3 0
3 years ago
What is the answer 2c+(3c-4)=a-4
gavmur [86]

Answer:idk

Step-by-step explanation:

5 0
3 years ago
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