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Karo-lina-s [1.5K]
3 years ago
10

PERIODIC FUNCTIONS AND TRIGONOMETRY FOR 25 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Airida [17]3 years ago
7 0
The sine increases from 0 to 90 degrees and from 270 to 360 degrees
The sine decreases from 90 to 270 degrees

The cosine increases from 180 to 360 degrees
The cosine decreases from 0 to 180 degrees

Sine = 0 at 0 and 180 degrees

Cosine = 0 at 90 and 270 degrees
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Write an equation of a line wit the given slope and y intercept
Orlov [11]

Answer:

Step-by-step explanation:

the standard equation of a line is in the form y=mx+b where m is the slope and b is the y intercept so if m = 1/4 and b = -3/4 you can just replace those spots giving you y=1/4x+-3/4

6 0
3 years ago
Can some explain steps​
Mashutka [201]

Answer:

r = 3.

Step-by-step explanation:

16 = 10 + √(3r + 27)

√(3r + 27) = 6

Square both sides:

3r + 27 = 36

3r = 36 - 27 = 9

r = 3.

Check the result:

Left side of the equation = 16

Right side = 10 + √(9 + 27)

                  = 10 + √36 = 16

5 0
2 years ago
Read 2 more answers
Write the expression (2−3i)+5i(1−3i)<br> as a complex number in standard form.
Katarina [22]

Answer:

17 + 2i

Step-by-step explanation:

Given

(2 - 3i) + 5i(1 - 3i) ← distribute both parenthesis

= 2 - 3i + 5i - 15i²  [ i² = - 1 ]

= 2 + 2i + 15

= 17 + 2i ← in standard form

5 0
2 years ago
Maria has 3 ceramic cats. She plans to buy some more. Write an equation in the form of y = x + b, b≠ 0 (b is not equal to 0) tha
Snezhnost [94]

Answer: y = 3+b

Step-by-step explanation:

Hi, to answer this question we have to write an equation:

y = x + b

Where:

y = total number of ceramic cats

x = actual number of ceramic cats

b=new ceramic cats bought

Replacing with the value given:

y = 3+b

Where y is the dependant variable and b the independent variable.

Feel free to ask for more if needed or if you did not understand something.

5 0
3 years ago
The cost of 2 plates of spaghetti &amp; 1 plate of salad is $27.50. The cost for 4 plates of spaghetti &amp; 3 salads is $59.50.
k0ka [10]

2a+1b=27.50

4a+2b=59.50

Multiply first equation by -4 and the second by 2 so you can drop off the a values then add the equations together.  Then solve for b.  You should get b=6.

Then plug b into one of the original equations and solve for a and you should get 10.75

So a plate of spaghetti is $10.75 and a salad is $6.

<em><u>Please mark brainliest!</u></em>

8 0
2 years ago
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