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2 years ago

12

Two balls are pulled one after another, without replacement, from the box containing three black, five yellow, and seven red bal

ls. What is the probability that the 1st ball is yellow, if the 2nd ball is black

1 answer:

kolezko [41]2 years ago

6 0

Answer:

1/14

Step-by-step explanation:

5/15 × 3/14 = 1/14

Or 0.0714 (3sf)

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What is the result when 4x3 – 722 - 11x + 17 is divided by 2 - 2? If there is a

Greeley [361]

Answer: -11x-1407/2

Step-by-step explanation: You have to simplify the expression.

Hope this helps you out and is what you were looking for! ☺

4 0

3 years ago

What is the the minimal education or degree i need to be a computer engineer?

andre [41]

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5 0

3 years ago

You are building a ramp that must cover a horizontal distance of exactly 17 feet. The angle of the ramp from the ground is 24°.

tiny-mole [99]

Answer:

Length of the ramp = 18.6 feet (Approx.)

Step-by-step explanation:

Given:

Horizontal distance (base distance) = 17 feet

Angle of elevation = 24°

Find:

Length of the ramp

Computation:

Cosθ = Length of base / Length of hypotenuse

Cos 24 = Horizontal distance (base distance) / Length of the ramp

Cos 24 = 17 / Length of the ramp

0.9135 = 17 / Length of the ramp

Length of the ramp = 17 / 0.9135

Length of the ramp = 18.6 feet (Approx.)

6 0

3 years ago

Find x on the triangle

iragen [17]

Answer:

(c)

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos42° = $\frac{adjacent}{hypotenuse}$ = $\frac{x}{12}$

Multiply both sides by 12

12 × cos42° = x, hence

x ≈ 8.9 → (c)

3 0

3 years ago

Read 2 more answers

sketch the curve represented by the parametric equations (indicate the orientation of the curve), write the corresponding rectan

pychu [463]

Answer:

Reduced equaton is $5x-3y+\frac{28}{3}=0$ .

Step-by-step explanation:

Given parametric equation is,

$x=3t-5$ and $y=5t+1$

Now, $x=3t-5\implies t=\frac{x+5}{3}$ substitute in second equation we get,

$y=\frac{5}{3}(x+5)+1$

$y=\frac{5}{3}x+\frac{28}{9}$

$\implies 5x-3y+\frac{28}{3}=0$

which is the corresponding rectangular equation after eliinating the parameter.

Now consider,

$y=\frac{5}{3}x+\frac{28}{9}$

Of which,

Slope : $\frac{5}{3}$

when,

$x=0, y=\frac{28}{9}=3.1$

$x=1, y=\frac{43}{9}=4.8; x=-1, y=\frac{13}{9}=1.4$

$x=2, y=\frac{58}{9}=6.4; x=-2, y=\frac{-2}{9}=-0.2$

$x=3, y=\frac{73}{9}=8.1; x=-3, y=\frac{-17}{9}=-1.8$

$x=4, y=\frac{88}{9}=9.8; x=-4, y=\frac{-32}{9}=-3.6$

$x=5, y=\frac{103}{9}=11.4; x=-5, y=\frac{-47}{9}=-5.2$

ans so on. Thus sketching th curve will look like given,

5 0

3 years ago