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Lunna [17]
3 years ago
15

There are 3 red and 9 blue counters in a box. A counter is chosen and then replaced. If you did this 144 times, how many times w

ould you expect to get a blue?
Mathematics
1 answer:
anygoal [31]3 years ago
3 0
If you do it 144 times that is (3+9)*12
This means that 12 times 3 red and 9 blue counters will be chosen that means that 9 blue counters will be chosen 12 times. 9*12 is 108.
This means blue counters will be chosen 108 times.
This can be checked as 108/3 would give you the number of red counters which is 36 and 108+36 is 144 

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Read 2 more answers
-6d=-42 can you help me solve please
eduard

Given the equation :

-6d=-42

So, to find d , divide both sides by ( -6 )

So,

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Note: when we divide two negative numbers, the result will be a positive number

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1 year ago
A. Name the smallest angle and the largest angle of the following triangles: F 6 S 5 1. A J 5.03 7 5 G B H 5.1 2. D 4 3 E​
I am Lyosha [343]

Answer:

  (smallest, largest) = (B, C), (D, E), (G, J)

Step-by-step explanation:

Side lengths of a triangle are proportional to the sine of the opposite angle. In a triangle, a larger angle will always have a larger sine. That means the smallest angle is opposite the shortest side, and the largest angle is opposite the longest side.

__

<h3>ΔABC</h3>

The shortest side is 5 units, opposite angle B. The longest side is 7 units, opposite angle C.

  • smallest angle: B
  • largest angle: C
<h3>ΔDEF</h3>

The shortest side is 3 units, opposite angle D. The longest side is 5 units, opposite angle E.

  • smallest angle: D
  • largest angle: E
<h3>ΔGHJ</h3>

The shortest side is 5 units, opposite angle G. The longest side is 5.1 units, opposite angle J.

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<em>Additional comment</em>

Angles in a triangle may exceed 90°. The sine function actually is decreasing for angles above 90°. However, since the total of angles of a triangle must be exactly 180°, there <em>cannot be two angles in a triangle such that the smaller angle has the larger sine</em>.

6 0
2 years ago
m∠WYX=(2x−1)° and m∠WYZ=(4x+1)°. If ∠WYX and ∠WYZ are complementary, what is the measure of each angle?
Neko [114]

We are given : m∠WYX=(2x−1)° and m∠WYZ=(4x+1)°.

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So, we need to add ∠WYX and ∠WYZ and set it equal to 90°.

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Therefore, ∠WYX=29° and ∠WYZ=61°.



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