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3 years ago

In the triangle below, angle B measures 60° and BC is 18. What is the length of AC?

Mathematics

2 answers:

mestny [16]3 years ago

7 0

Answer:

The Answer is D StartFraction StartRoot 3 EndRoot Over 9 EndFraction

Step-by-step explanation:

Gre4nikov [31]3 years ago

6 0

Answer:

The Answer is D StartFraction StartRoot 3 EndRoot Over 9 EndFraction

Step-by-step explanation:

Just took the test one Edge, sorry its late.

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The slope of the line below is 2. Use the coordinates of the labeled point to find a point-slope equation of the line.

Vanyuwa [196]

Y - 9 = 2(x - 1)

This is because the base equation is below:

y - y1 = m(x - x1)

3 0

3 years ago

Find all the zeroes of the equation. x4 – 6x2 – 7x – 6 = 0

NeX [460]

Answer:

-2, 3, -0.5 + 0.866i, -0.5 - 0.866i.

Step-by-step explanation:

As the last term is -6 , +/- 2 , +/- 3 are possible zeroes.

Try 2:-

(2)^4 - 6(2)^2 - 7(2) - 6 = -28 so 2 is not a zero.

3:-

(3)^4 - 6(3)^2 - 7(3) - 6 = 0 so 3 is a zero.

(-2)^4 - 6(-2)^2 - 7(-2) - 6 = 0 so -2 is also a zero.

Divide the function by (x +2)(x - 3), that is x^2 - x - 6

gives x^2 + x + 1

x^2 + x + 1

So we have x^2 + x + 1 = 0

x = [-1 +/- √(1^1 - 4*1*1)] / 2

= -1 + √(-3) / 2 , - 1 - √(-3) / 2.

= -0.5 + 0.866i, -0.5 - 0.866i

7 0

3 years ago

Old McDonald has a farm with 36 cows and goats the number of cars he has 10 more than the number of coats how many of each anima

Vanyuwa [196]

Answer:

13 goats and 23 cows

Step-by-step explanation:

Use x to solve :) it's a hint

3 0

3 years ago

Read 2 more answers

Simplify please sorry last one(2y+1)^2-4y^2+2

Sergeu [11.5K]

4y^2+4x+1-4y^2+2
4y+1+2
4y+3

3 0

3 years ago

Two different airlines have a flight from Los Angeles to New York that departs each weekday morning at a certain time. Suppose t

marusya05 [52]

Answer: 0.8167

Step-by-step explanation:

Let E denotes the event that the first airline's flight is fully booked on a particular day, and F denotes the event that the second airline's flight is fully booked on that same day.

Given : P(E) = 0.7, P(F) = 0.6, and P(E ∩ F) = 0.49.

Then, by conditional probability formula , we have

$P(E|F)=\dfrac{P(\cap F)}{P(F)}\\\\=\dfrac{0.49}{0.6}=0.816666666667\approx0.8167$

Hence, the probability that the first airline's flight is fully booked given that the second airline's flight is fully booked.= 0.8167

5 0

3 years ago