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sertanlavr [38]
3 years ago
7

This is on graphing cosine and sine functions!

Mathematics
1 answer:
yawa3891 [41]3 years ago
4 0
Check the picture below.

5 is 1*5, or 5 times greater than 1.

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Which statements are true? Select three options. The line x= 0 is perpendicular to the line y= 3.
torisob [31]

Answer:

True

Step-by-step explanation:

x = 0 is a vertical line. It's the y-axis.

y = 3 is a horizontal line.

x = 0 and y = 3 are perpendicular lines.

Answer: True

7 0
3 years ago
due in 5 minutes help! :( All CD’s are on sale for 20% this week. The CD is $9.99. What is the original price of the CD?
bekas [8.4K]

Answer:

$12.49

Step-by-step explanation:

The price right now = 0.8 * the original price

9.99 = 0.8*x

x=12.4875

x≈12.49

Sorry, I thought your problem meant that it was 20% the original price, not 20% off.

6 0
3 years ago
Martin finds a t-shirt on 24% sale. The original price was $45. Martin must pay 8.25% sales tax. How much does he need to pay in
bearhunter [10]

Answer:

11.691

Step-by-step explanation:

Too lazy to wright, sorry.

4 0
3 years ago
Read 2 more answers
When solving the equation, which is the best first step to begin to simplify the equation?
boyakko [2]

Answer:

<h3>Negative one-half (negative 2) (x + 3) = negative 10 (negative one-half)</h3>

Step-by-step explanation:

Given the expression

- 2 (x + 3) = - 10

The first step in solving the expression is to multiply both sides by -1/2 as shown;

-1/2(-2)(x+3) = -1/2(-10)

(x +3) = 1/2(10)

x + 3 = 5

x = 5-3

x = 2

Hence the correct option is Negative one-half (negative 2) (x + 3) = negative 10 (negative one-half)

6 0
3 years ago
Read 2 more answers
It takes 5 hours for a boat to travel 25 miles upstream. The same boat can travel 30 miles downstream in 2 hours. Find the speed
loris [4]

Answer:

so 5 miles upstream and 15 miles downstream

Step-by-step explanation:

25/5=5

30/2=15

3 0
2 years ago
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