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3 years ago

Simplify the expression using the appropriate identities. (Do not use calculator)

Mathematics

1 answer:

bezimeni [28]3 years ago

6 0

Answer:

sin -1 degrees.

Step-by-step explanation:

sin (A - B) = sin A cos B - cos A sin B

Therefore sin 9° cos 10°- cos 9º sin 10° = sin (9 - 10)

= sin -1 degrees.

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Solve the following quadratic equation 3x²-8x+5=0

nekit [7.7K]

To solve this equation, let's factor the left side.

Although you can factor it in different ways, I will show you a trick.

First, forget about the 3 and we have x² - 8x + 5.

Now, multiply the 3 by the constant to get 15.

So we have x² - 8x + 15.

Now factor to get (x - 5)(x - 3).

Now divide each of the constants in the

binomials by the leading coefficient, 3.

So we have (x - 5/3)(x - 3/3).

Simplify to get (x - 5/3)(x - 1).

Now move any denominators in front of the x in the binomial.

Moving the 3 in front of the x, we have 3x.

So our answer is (3x - 5)(x - 1) = 0.

So either 3x - 5 = 0 or x - 1 = 0.

Solving from here, we get x = 5/3 or x = 1.

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3 years ago

Which graph shows the solution to the equation below? log Subscript 3 Baseline (x + 3) = log Subscript 0.3 (x minus 1)

weqwewe [10]

Answer:

The answer is 20

Step-by-step explanation:

(Edge2020)

8 0

3 years ago

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Determine whether the function below is an even function, an odd function, both, or neither.

kari74 [83]

All of the powers of x here are even, so the function f(x) is even. Note that 19 = 19x^0 = 19(1) = 19

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3 years ago

Graph the line with slope 7 and y-intercept -7

poizon [28]

Given :-

To graph the line with slope 7 and y intercept -7.

To Find :-

The graph of the line .

Solution :-

Here since the slope of the line is 7 and y intercept is -7 , we can use the slope intercept form of the line to find the equation of the line . The slope intercept form of the line is ,

$\longrightarrow$ y = mx + c

On putting the respective values ,

$\longrightarrow$ y = 7(x) + (-7)

$\longrightarrow$ y = 7x - 7

For the graph see attachment .

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2 years ago

What is 1/4 to the power of 3

Alex Ar [27]

Answer:0.015625

Step-by-step explanation:

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2 years ago

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