MATHEMATICS MIDDLE SCHOOL

a spinner marked with four sections blue, green, yellow, and red was spun 100 times. find the experimental probability of landing on green

Answers

Answer 1
Answer: 1/4 because it a possibilty of how many times you'll get it on green
Answer 2
Answer:

Answer:

1/4

Step-by-step explanation:

Okay so there are 4 different colors and you are spinning it 100 times.

Green is one of the for colors so the probability is 1/4

but the denominator for now must be 100

What is 1/4 of 100 ?

25.

So the probabiltiy is 25/100 but you need to reduce so it would be 1/4

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If P(A) = 0.996, what is the value of P(A)?

Answers

Answer:

p(a) = 0

Step-by-step explanation:

p(a) = 0.966

Find the derivative of the fraction

p(a) = (d)/(da) ( 0.966)

Convert the decimal number to a fraction

p(a) = (d)/(da) ( (249)/(250) )

The derivative of a constant is always 0

p(a) = 0

18 is 20℅ of what of number?

Answers

18 is 20% of 90 

Change the percentage into a decimal by dividing it over 100:
(20)/(100) = 0.2

Divide 18 by 0.2:
(18)/(0.2) = 90
18 is 20% of 90.
18/90= 0.2 OR 20%

Subtract 8a - 4 from 3a

Answers

Answer:

Dear jaaayq

Answer to your query is provided below:

Subtracting 8a - 4 from 3a is - 5a + 4

Step-by-step explanation:

To subtract 8a - 4 from 3a

You need to write it as 3a - (8a-4)

Solve equation ,

3a - 8a + 4

= - 5a + 4

Answer:

-5a+4

Step-by-step explanation:

3a - (8a -4)

Kong took 15% fewer seconds than Nolan took to complete his multiplication timed test. Kong took 85 seconds.

Answers

Answer:Nolan took 100 seconds to complete his multiplication test.
Solution:85% of time Nolan took to complete multiplication test=85 seconds
100%=85/85 × 100
=100 seconds.
you can do it in proportions do 15%/100% = 85/?
then do 15 times 85 t
hen divide the answer by 100
which will get you 12.75
then do 85 plus 12.75
then that’s the answer that nolan took for his test.

What angle has no supplement

Answers

supplement is te angle that ads to 180
maybe the angle that is more than 180 (you can't have negative angles)
or maybe it is 180, since it is alreay equal to 180
Supplementary add up to 180 degrees (140° and 40°)
Complementary add up to 90 degrees

Solve the equation below

Answers

1/3(12+x) = -8 (6-x)

Distribute the 1/3 and the -8 through their parentheses

4 + 1/3x = -48 + 8x

subtract 4 from each side

1/3x = -52 + 8x

subtract 8x from each side

1/3x - 8x = -52

combine like terms

1/3x - 24/3x = -52
-23/3x = -52

divide each side by -23/3 (multiply the reciprocal of the divisor)

x = -52 × -3/23
x = 156/23

x = 6 18/23 or 6.78
(1/3)(12+x)=(-8)(6-x)
(1/3)*12 + (1/3)*x = -8*6 - (-8)*x
4 + 1/3x = -48 + 8x
1/3x - 8x = -48 - 4
-23/3x = -52
x = 156/23
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