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Vera_Pavlovna [14]
3 years ago
6

On a multiple choice test with 29 ​questions, each question has four possible​ answers, one of which is correct. for students wh

o guess at all​ answers, find the mean for the number of correct answers. round to the nearest tenth.
Mathematics
1 answer:
andrezito [222]3 years ago
3 0
29/4 = 7.25, so 12.3
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Please help!! I will mark the brainlest if it’s correct
strojnjashka [21]

Answer:

Therefore

m Angle 1 = m Angle 2  = 31° ...Justified

Step-by-step explanation:

Given:

m angle 1 = ( 3x + 10 )°

m angle 2 = ( 5x - 4 )°

To Find:

m∠1 = ?

m∠2 = ?

Solution:

Vertical Angles:  

The angles opposite each other when two lines cross. They are always equal.

∴ m Angle 1 = m Angle 2

Substituting the given values we get

3x+10=5x-4\\\\2x=14\\\\x=\dfrac{14}{2}=7\\\therefore x =7

Substituting ' x ' in Angle 1 and Angle 2 we get

m Angle 1 = 3 × 7 + 10 = 31°

m Angle 2 = 5 × 7 - 4  = 31°

Therefore

m Angle 1 = m Angle 2  = 31° ...Justified

5 0
3 years ago
Sean used candle molds, as shown, to make candles that were perfect cylinders and spheres:
BaLLatris [955]
We calculate for the volumes of each of the wax needed for the candles through the equations presented below.

For cylinder:
                             V = πr²h
where V is volume, r is radius and h is height.

Substituting the known values,
 
                           V = (3.14)(3 in)²(6 in)
                            V = 169.56 in³

For sphere:

                         V = 4πr³/3
Substituting the known values,
                        V = 4(3.14)(3 in)³ / 3 = 113.04 in³

The difference between the two volumes,

                         difference of volumes = 169.56 in³ - 113.04 in³
                         <em>difference of volumes = 56.52 in³</em>

Thus, the answer to this item is the last choice. 
4 0
3 years ago
Micah and his brother found some cash at a bus stop.They split the money evenly, each getting $ 16. How much money did they find
Lisa [10]

Answer: 32 dollars

Step-by-step explanation:

7 0
4 years ago
The "Let's Roll" game uses a number cube with the numbers 2,4,6,8,10, and 12. There are prizes for rolling any number less than
deff fn [24]
There is a 33.3% chance of rolling a number less than 6. It’s 2/6, which is reduced to 1/3. = that to x/100, multiply 1 x 100, and divide that by 3. So it’s 100 divided by 3, and that’s 33.3, which is the percentage.
8 0
3 years ago
Read 2 more answers
(x+ delta x)^4 please help me
alexandr402 [8]
The awnser would be , 4x+4adetx
8 0
3 years ago
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