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RoseWind [281]
4 years ago
7

PLEASE HELP ASAP!!!!!

Mathematics
1 answer:
Wittaler [7]4 years ago
5 0

Answer:

sec(x)

Step-by-step explanation:

cos(x)+cos(x)tan^2(x)

Multiply cos(x) by 1:

cos(x)*1+cos(x)tan^2(x)

Factor out cos(x):

cos(x)(tan^2(x)+1)

Apply the pythagorean identity (tan^2(x)+1=sec^2(x)):

cos(x)sec^2(x)

Rewrite sec^2(x):

cos(x)(\frac{1}{cos(x)})^2 \\cos(x)\frac{1}{cos^2(x)}

Cancel cos(x):

\frac{1}{cos(x)}

Rewrite:

sec(x)

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B. 12 would be your answer
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Ariel's guitar teacher charged $35 each month for lessons. Her new rate is $40 a month.
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If y=8 when x =3, find y when x=45
Art [367]
Let's make things easier by simplifying things.

y = 8 and x = 3 is more likely to be understood as a ratio. So for the rest of the answer, their relationship would be represented as y:x

Thus: y:x = 8:3

The problem would be finding y when x = 45

Let us proceed on using the previous equation and substitute x with 45 which would look like this:

y:45 = 8:3

Ratios can also be expressed as fractions which would make things more understandable and easy to solve. So the new form of our equation would be like this:

y/45 = 8/3

Then we proceed with a cross multiplication where the equation becomes like as what is shown below:

3y = 45 * 8

From there, you can solve it by multiplying 45 and 8 then dividing the product with 3 to get y

3y = 360

y = 120

Another way of looking at the problem, especially problems like these, is to take the whole question or statement as an equation. it would probably look like this:

y = 8 when x = 3 : y = ? when x = 45

This would make you understand what approach you can use to solve the given problem.
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3 years ago
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A survey asked 40 students If they play an instrument and if they are in band.
wel

Answer:

352x^2

Step-by-step explanation:

40\times 1.25x\times 2.20x\times 3.2040×1.25x×2.20x×3.20

(40)1.25x2.20x3.20

+ − .   ln > <

× ÷ /   log ≥ ≤

( )    logx = %

1 Take out the constants.

(40\times 1.25\times 2.20\times 3.20)xx(40×1.25×2.20×3.20)xx

2 Simplify  40\times 1.2540×1.25  to  5050.

(50\times 2.20\times 3.20)xx(50×2.20×3.20)xx

3 Simplify  50\times 2.2050×2.20  to  110110.

(110\times 3.20)xx(110×3.20)xx

4 Simplify  110\times 3.20110×3.20  to  352352.

352xx352xx

5 Use Product Rule: {x}^{a}{x}^{b}={x}^{a+b}x

​a

​​ x

​b

​​ =x

​a+b

​​ .

352{x}^{2}352x

​2

​​  

Done

3 0
3 years ago
Interest rate on a credit card is 1/2%. is 1/2% less then,equal to,or greater then 0.005? explain
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It’s is greater it would only be equal if you multiplied it by 100
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