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olga2289 [7]
3 years ago
14

Verify that each equation is an identity. Show Work plzz!!

Mathematics
1 answer:
Pavlova-9 [17]3 years ago
3 0

Answer:

Step-by-step explanation:

sin²x + cos²x = 1 ⇒ cos²x = 1 - sin²x

\frac{cos^2x}{cos^2x} = 1

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4 math problem
Aneli [31]

Answer:

Step-by-step explanation:

1)y=-6x-14   ---------(i)

-x-3y=-9  ---------- (ii)

Substitution method:

Substitute y  value in equ (i)

-x -3*(-6x-14) = -9

-x - 3*-6x -3*(-14)= -9

-x + 18x + 42 = -9

17x = -9 -42

17x = -51

x = -51/17

x = -3

Substitute x value in equation (i)

y = -6*-3 -14

y =18-14

y = 4

6 0
3 years ago
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Answer and please show the work !
Thepotemich [5.8K]

Answer:

Option A for part A and $79 for part B

Step-by-step explanation:

8 0
3 years ago
What is the measurement of 113
kirill115 [55]

Answer:

9.41666667 feet

Step-by-step explanation:

7 0
3 years ago
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Find the area of a triangle measuring 25 feet long by 8 feet wide
nata0808 [166]
Triangle area= b*h/2

Plug in the values:
25*8/2
200/2
100

Final answer: 100 ft^2
5 0
3 years ago
Find an exponential model : Q is the population of bacteria in a Petri dish whose population was originally 150,000 but is tripl
Nadya [2.5K]

Answer:

150,000*3^t for 6 hour increments (t=1 is 6 hours t=2 is 12)

150,000*3^(t/6) for hourly increments, each t is 1 hour.  

Step-by-step explanation:

Well super simply you could do 150,000*3^t where t is measured in 6 hour intervals.  so t=1 is 6 hours, and to get 1 hour you would need to do t=1/6

If you want t to be an increase of every hour you would just need to adjust, like I showed before 1/6 gets one hour so 150,000*3^(t/6) would be the model where every t increases by 1 hour.

4 0
3 years ago
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