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3 years ago

Help me on #13 and please explain

Mathematics

1 answer:

hichkok12 [17]3 years ago

4 0

Answer:

56.4°

Step-by-step explanation:

Let θ = the angle of elevation. Then

tanθ = 199/132 = 1.508

θ = arctan1.508

θ = 56.4°

The angle of elevation is 56.4°.

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Which transformation represents the dilation? How can you tell?

spin [16.1K]

Answer:

A dilation is a type of transformation that enlarges or reduces a figure to create a new figure, If the scale factor is between 0 and 1 the image is a reduction. If the scale factor is greater than 1, the image is an enlargement

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2 years ago

Find the 20th term of the arithmetic sequence 15, 9, 3, -3, ...

RUDIKE [14]

The 20th term is -106

15,9,3,-3,-9,-15,-21,-28,-35,-41,-46 (10) -6 x 10 = -60

-60 + -46

-106

You're just subtracting by 6.

4 0

3 years ago

2x^3y^-3*2x^-1y^3<br> Someone help me with my math.

Virty [35]

The answer is 4x^2

all you gotta do is multiply them like usually but -

(2X^3.)(2X^-1)
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8 0

3 years ago

If events X and Y are independent, what must be true? Check all that apply. P(Y | X) = 0 P(X | Y) = 0 P(Y | X) = P(Y) P(Y | X) =

lana [24]

if events X and Y are independent, then for intersection we multiply the probability

P(Y∩X) = P(Y) * P(X)

We know that

$P(Y|X) =\frac{P(YintersectionX)}{P(X)}$

Now we replace P(Y) * P(X) for P(Y∩X)

$P(Y|X) =\frac{P(Y)*P(X)}{P(X)}$

Cancel out P(X)

So $P(Y|X) = P(Y)$

Like that

$P(X|Y) =\frac{P(XintersectionY)}{P(Y)}$

Now we replace P(X) * P(Y) for P(X∩Y)

$P(X|Y) =\frac{P(X)*P(Y)}{P(Y)}$

Cancel out P(Y)

So $P(X|Y) = P(X)$

P(Y | X) = P(Y) and P(X | Y) = P(X) are true

3 0

3 years ago

Read 2 more answers

Given

Paladinen [302]

Step-by-step explanation:

$log(x) = 2 \\ {10}^{2} = x \\ x = 100$

then for y:

$log( y) = - 1 \\ {10}^{ - 1} = y \\ y = 0.1$

so:

$xy - 100 {y}^{2} \\ = 100 \times 0.1 - 100 \times {(0.1)}^{2} \\ = 10 - 100 \times 0.01 \\ = 10 - 1 \\ = 9$

8 0

3 years ago