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3 years ago

True or false: sinxcosy=1/2(sin(x+y)-cos(x+y))

Mathematics

1 answer:

Nataly [62]3 years ago

3 0

I may be wrong but I think it is "True"

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Help please?!?!?!?!?!?!

svp [43]

slope is change in y over change in x

use 2 points from the table so -3,-21 and -6,-39

change in Y: -39 - -21 = -18

change in x = -6 - -3 = -3

slope = -18/-3 = 6

slope = 6

8 0

3 years ago

Solve. 90<img src="https://tex.z-dn.net/?f=x" id="TexFormula1" title="x" alt="x" align="absmiddle" class="latex-formula"> = 27.

Irina-Kira [14]

Answer: $x$ ≈ $0.732$

Step-by-step explanation:

You need to find the value of the variable "x".

To solve for "x" you need to apply the following property of logarithms:

$log(m)^n=nlog(m)$

Apply logarithm on both sides of the equation:

$90^x=27\\\\log(90)^x=log(27)$

Now, applying the property mentioned before, you can rewrite the equation in this form:

$xlog(90)=log(27)$

Finally, you can apply the Division property of equality, which states that:

$If\ a=b,\ then\ \frac{a}{c}=\frac{b}{c}$

Therefore, you need to divide both sides of the equation by $log(90)$ . Finally, you get:

$\frac{xlog(90)}{log(90)}=\frac{log(27)}{log(90)}\\\\x=\frac{log(27)}{log(90)}$

$x$ ≈ $0.732$

7 0

3 years ago

How do I ace a test that I am not prepared for?

Morgarella [4.7K]

You either start studying now or you fake it and guess and get lucky or you cheat

4 0

3 years ago

What does w=11 plus negative 7

kow [346]

Answer:

w=4

Step-by-step explanation:

adding a negative is like subtracting so w=11-7

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3 years ago

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The graphs below have the same shape. Complete the equation of the blue

jok3333 [9.3K]

Answer:

the answer is G(x)=x^2 + 1

if you add +1, the y value will increase 1 point upward making the other function equal to g(x)=x^2 + 1. the difference between the two functions is the + 1.

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3 years ago

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