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3 years ago

NEED HELP ASAP!!!!!!!

Mathematics

1 answer:

Elan Coil [88]3 years ago

3 0

I think the answer is C

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What is the sign of -x^3 • (0/y) when x and y are negative numbers?

german

$\bf -x^3\cdot \left( \cfrac{0}{y} \right)\implies -x^3\cdot (0)\implies 0$

regardless of the sign of either "x" and "y".

8 0

4 years ago

Read 2 more answers

Log3(X-5)+log3(x+3)=2

liubo4ka [24]

LnA +LnB= LnA.B
so we get <span>Log3(X-5)+log3(x+3)=Ln3(x-5)(x+3)=2 implies
</span>(x-5)(x+3)=2^3=8, so we can solve easily the quadratic equation
x^2-2x-23=0, there are two solution x=1 -sqrt(24), and x=1+sqrt(24)

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3 years ago

Look at the triangle show on the right. The Pythagorean Theorem states that the sum of the squares of the legs of a right triang

Vladimir [108]

Answer:

$cos^2\theta + sin^2\theta = 1$

Step-by-step explanation:

Given

$(\frac{b}{r})^2 + (\frac{a}{r})^2$

Required

Use the expression to prove a trigonometry identity

The given expression is not complete until it is written as:

$(\frac{b}{r})^2 + (\frac{a}{r})^2 = (\frac{r}{r})^2$

Going by the Pythagoras theorem, we can assume the following.

a = Opposite
b = Adjacent
r = Hypothenuse

So, we have:

$Sin\theta = \frac{a}{r}$

$Cos\theta = \frac{b}{r}$

Having said that:

The expression can be further simplified as:

$(\frac{b}{r})^2 + (\frac{a}{r})^2 = 1$

Substitute values for sin and cos

$(\frac{b}{r})^2 + (\frac{a}{r})^2 = 1$ becomes

$cos^2\theta + sin^2\theta = 1$

3 0

4 years ago

I need help with this <br>

-BARSIC- [3]

Answer:

Step-by-step explanation:

3 + 6 * 4 - 80 / 10 + 4 - 18 = 3 + 24 - 8 + 4 - 18 = 27 - 8 + 4 - 18 = 19 + 4 -18 = 23 - 18 = 5

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3 years ago

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If the slope of a line is 1/2 and the y-intercept is 6, what is the x-intercept of the same line?

ASHA 777 [7]

The slope of a line is the ratio of the change in y to the change in x. The slope of the given line is 1/2 = -6/-12. That is, when y changes by -6 to go from 6 to zero, x will change by -12 to go from 0 to -12.

The x-intercept is (-12, 0).

6 0

4 years ago