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olya-2409 [2.1K]
3 years ago
11

Which quadrents do the six inverse trig functions?

Mathematics
1 answer:
Virty [35]3 years ago
5 0
In quadrant 1 (0-90°) all six are positive.
In Q2 (90-180°) only sine and cosecant are positive.
In Q3 (180-270°) only tangent and cotangent are positive.
In Q4 (270-360°) only cosine and secant are positive.
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Kate decides to replace all the lights in her college apartment with energy saving light bulbs beginning this month. The packagi
tatyana61 [14]

Answer:

Kate's electric bill will be $9 for this month for bulb use only.

Step-by-step explanation:

Given:

Electricity bill lass month from bulb use = $12

Using new bulbs percent decrease in electricity = 25%

We need to find this month electric bill for bulb use.

Solution:

First we will find the reduction in bill after using new bulbs.

reduction in bill after using new bulbs can be calculated by percent decrease in electricity using new bulb multiplied by last month Electricity bill from bulb use only.

framing in equation form we get;

reduction in bill after using new bulbs = \frac{25}{100}\times 12 =\$3

Now we will find this month electric bill for bulb use only.

this month electric bill for bulb use only can be calculated by subtracting reduction in bill after using new bulbs from last month electric bill for bulb use only.

framing in equation form we get;

this month electric bill for bulb use only = \$12-\$3=\$9

Hence Kate's electric bill will be $9 for this month for bulb use only.

3 0
3 years ago
Congratulations! You just won the lottery and plan to buy a bunch of cars and motorcycles for all your friends. You purchase 50
Sedaia [141]

Step 1

Let n represent car and m represent motorcycles.

n + m = 50 ...................1

car has four wheels and motorcycle has two wheels

4n + 2m = 164 .............................. 2

Step 2

Solve equation 1 and 2 simultaneously.

from (1), make n subject of relation and substitute in equation 2.

n = 50 - m

Step 3

Substitute n in equation 2

4(50 - m) + 2m = 164

200 - 4m + 2m = 164

collect like terms

200 - 164 = 4m - 2m

36 = 2m

m = 36/2

m = 18

next find n

n = 50 - m

n = 50 - 18

n = 32

There are 32 cars and 18 motorcycles.

8 0
10 months ago
carbon-14 has a half-life of 5730 years. The formula f(t)=(1/2)^t/5730 give the percentage of carbon-14 left in the item after t
andreyandreev [35.5K]
Heyy sorry I need the points
5 0
2 years ago
Solve the equation.<br> -1/6x - 5 = 2/3x<br> Please type step-by-step explanation.
Debora [2.8K]

Answer: Solution

=

−

6

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
20=x/3-8 what is x please help
malfutka [58]
20=x/3-8


28=3x


3x/3 = 28/3


X= 28/3
6 0
2 years ago
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