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olga2289 [7]
2 years ago
14

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

Mathematics
1 answer:
Pavlova-9 [17]2 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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Please answer this question
Afina-wow [57]

Answer:

The answer is

Step-by-step explanation:

Given: f(x) = 3 + 2x - x²

To compute f(3 + h) substitute x = 3 + h.

Similarly, to compute f(h) simply substitute x = h.

We are asked to compute $ \frac{f(3 + h) - f(h)}{h} $

f(3 + h) = 3 + 2(3 + h) - {(3 + h)²}

           = 3 + 6 + 2h - {9 + 6h + h²}

           = 9 + 2h - 9 - 6h - h²

           = - 4h - h²

Now, f(h) = 3 + 2h - h²

f(3 + h) - f(h) = -4h - h² - 3 - 2h + h²

                    = -6h - 3

$ \therefore \frac{f(3 + h) - f(h)}{h} = \frac{-3(2h + 1)}{h} $ which is the required answer.

6 0
3 years ago
What is 6X squared +17 X +13+4 over X -1 multiplied by X minus one
Free_Kalibri [48]

Answer:

6x^{3} + 11^{2} - 4x -9

Step-by-step explanation:

i) (6x^{2} + 17x  + 13  + \frac{4}{x-1} ) \times (x - 1) = (6x^{2} + 17x  + 13)\times (x - 1) + 4 = 6x^{3} + 11^{2} - 4x -9

8 0
3 years ago
_Izzy wants to paint three walls in her family room. Two walls are 13
stiks02 [169]
The total area would be the combined area of all three

Let’s knock out the first 2

4.5 * 13 = 58.5 * 2 = 117

Now the last

4.5 * 9 = 40.5

117 + 40.5 = 157.5 ft^2
5 0
2 years ago
Read 2 more answers
4 loads of stone weigh23ton. Find the weight of 1 load of stone.
mrs_skeptik [129]

Answer: 1 load of stone weighs 5.75 tons.

Step-by-step explanation: You'll need to divide 23 by 4 leaving you with 5.75. This will help you get a number that is potentially the weight of 1 load. To check to see if this is right, multiply 5.75 by 4 to get 23.

6 0
2 years ago
Margaret goes to the county fair with $35. Rides cost $3 each. Write an equation that gives the amount of money m that Margaret
Oksi-84 [34.3K]

Answer:

11.

Step-by-step explanation:

I got the answer of 11, as I:

-First, I worked out how many rides Margaret would be able to go on, so I did $35 -/- $3, which was a decimal, but the most amount of times would be 11 rides that she could go on, therefore, that's the amount of rides she would take, and have $2 left over.

Hope this helps!

--Emilie Xx

3 0
2 years ago
Read 2 more answers
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