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Goshia [24]
3 years ago
10

A fair spinner has 9 equal sections: 2 red, 3 blue and 4 green.

Mathematics
1 answer:
elixir [45]3 years ago
4 0
Probability of 2 consecutive greens equals 4/9*3/8=1/6
Probability of not getting equals 1-1/6=5/6
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In triangle abc, if A=120 degrees, a=8 and b=3, then angle B=
CaHeK987 [17]

The angle of B is \angle B=19^{\circ}

Explanation:

It is given that \angle A=120^{\circ} and a=8, b=3

To determine the \angle B, let us use the law of sine formula.

Thus, we have,

\frac{Sin A}{a} =\frac{Sin B}{b}

Substituting the values in the formula, we have,

\frac{Sin 120}{8} =\frac{Sin B}{3}

Multiplying both sides by 3,we get,

\frac{3(0.866)}{8} ={Sin B}

Simplifying and dividing, we get,

0.32475=Sin B

Multiplying both sides by \sin ^{-1}, we get,

\sin ^{-1}(0.32475)=B

Thus, B=18.95^{\circ}=19^{\circ}

Hence, The angle of B is \angle B=19^{\circ}

6 0
2 years ago
This performance task is really important for my grade, if you could help, i would greatly appreciate it :)
Lady bird [3.3K]

Answer:

This quadrilateral is a SQUARE.

When we plot these points, we realize that they are equal distance apart.

So, when a quadrilateral has sides that are equal distance apart, that quadrilateral is a square.

Let me know if this helps!

3 0
3 years ago
From the graph below, what are the two intervals that the function is increasing on?
larisa86 [58]

Step-by-step explanation:

The graphed function has its local maximum at x = - 1 and local minimum at x = 2.

The function is decreasing between those points and increasing outside.

The increasing intervals are

  • x ∈ (- ∞, - 1) ∪ (2, + ∞)
4 0
2 years ago
4. Which function has two
lianna [129]

Answer: B) (x - 5)(x + 4)

Step-by-step explanation:

we’re looking for x intercepts at x = 5 and x = -4

x - 5 = 0; x = 5

x + 4 = 0; x = -4

(x - 5)(x + 4) is your answer

6 0
3 years ago
Janet can do a job in three hours while Gary can do the same job in two hours. If Janet works for an hour before Gary be in help
yKpoI14uk [10]

Janet = 1/3

Gary = 1/2

(1/3) + (1/2) = 5/6

Let x = time they both can do the job together

(1/2) + (5/6)x = 1

Solve for x to find your answer.

6 0
3 years ago
Read 2 more answers
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