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Archy [21]
3 years ago
11

Why is cos(150⁰) not the same as cos(30⁰)?

Mathematics
1 answer:
frosja888 [35]3 years ago
3 0
Yeah, cos 150° is negative because it's in the 2nd quadrant, which has all negative x-values. (The third quadrant has all negative x-values as well)
Cos 30° is positive because the first quadrant(and 4th) have all positive x-values.
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2) Joanie got paid $111 to babysit three kids for 6 hours. How much was she paid per hour?
Hatshy [7]

Answer:

18.5

Step-by-step explanation:

Since she was paid $111 for 6 hours, you divide 111/6 to get 18.5

6 0
3 years ago
What is slope-intercept form? <br> Why do we write equations using this form?
Brums [2.3K]
Slope intercept form is y=mx+b
m=slope
b=y-intercept

the slope is the rate of change of the graph, basically rise/run (change in y divided by change in x)

the y intercept is where the graph intercepts the y axis





we usually use this form because we can find the slope and find where it hits the y axis.
there are other forms that may be helpful later on, but this one is usually the easiest form to find from a graph
7 0
3 years ago
An ant crept to a hole, which was 300 cm away.
ohaa [14]

Answer:

Answer 10 min

Step-by-step explanation:

Because if it crawls 40 cm per minute but it goes back 10 cm because of wind then you have to do 40-10 = 30 then you do 300 divided by 30 to get the time.

Hope this helped!!!

8 0
4 years ago
In a plastic bag, 12 of the 25 marbles are yellow. In a cloth bag, 7 of the 25 marbles are yellow. If John randomly draws one ma
ziro4ka [17]

Answer:kjbhbyuyuguyv

Step-by-step explanation:

7 0
3 years ago
The area of a rectangular dining room is 16 square meters. The perimeter is 16 meters. What are the dimensions of the dining roo
neonofarm [45]

Answer:

4

Step-by-step explanation:

The area is 16, and you know that it's 2 sides u need to multiply

The perimeter is 16, and you know that you need to add up all the sides

So....

A = b * h

A = 4 * 4

A = 16    CORRECT

And....

P = S + S + S + S                                                         ( s = sides)

P = 4 + 4 + 4 + 4

P = 16 CORRECT

Hope this helped!

Have a supercalifragilisticexpialidocious day!

6 0
3 years ago
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