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rusak2 [61]
3 years ago
15

Find the difference. (4y+3)-(2y-9)

Mathematics
2 answers:
Dovator [93]3 years ago
3 0

Answer:

2y +12

Step-by-step explanation:

(4y + 3) - (2y - 9)

Expand

- (2y - 9) =  - 2y + 9

4y + 3 - 2y + 9

Group like terms and simplify

4y - 2y + 3 + 9 \\ 2y + 12

Yuki888 [10]3 years ago
3 0

Hey there! I'm happy to help!

First, we subtract the variables.

4y-2y=2y

And we subtract the constants.

3--9

3+9=12

So, the difference is 2y+12.

Have a wonderful day! :D

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A manufacturer is concerned over the diameter of rubber balls being produced. Too large and they don’t work for certain applicat
UkoKoshka [18]

Answer:

c = 0.1864

Step-by-step explanation:

To find c, we need to find the z-score where:

P(-z<Z<z) = 98%

Based on the properties of the normal distribution we can said that

P(-z<Z<z) = 98% is equal to:

2*P(Z>z) = 2%    or  P(Z>z)= 1%

So, using the standard normal table, the z score is 2.33

Then, we can calculated the value of c as:

c=z*s

Where s is the standard deviation and z is the z-score. Replacing the values, we get:

c = 2.33*0.08

c = 0.1864

3 0
3 years ago
This isnt about math but. Why do some people keep talking about fairys and using this emoji ‍♀️
arsen [322]

Answer:

Because emojis can better express what you are feeling, and it's fun to use. As for fairys... I don't really know either.

Step-by-step explanation

4 0
3 years ago
Read 2 more answers
Work out the volume of this sphere.<br> Give your answer to 1 decimal place.<br> 4.7 cm
Dmitry [639]

Answer:

434.9 cm³

Step-by-step explanation:

Volume of a sphere: 4/3πr³

Substitute the information to find the volume.

4/3π(4.7)³ = 434.9

7 0
2 years ago
A coin collection is made up of 34 coins, all nickels and dimes. The total value of the collection is $1.90. How many nickels ar
wel

Answer:

Hey There the Answer to this is x = nickels

y= dimes

x + y = 34

.05x + .10y= $1.90

-.10x - .10y = -3.40

-.05x + .10y = 1.90

-.05x = -1.50

x = 30 nickels

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(3,4) And that you get the answer.

Hope it helps!

6 0
3 years ago
Which<br> graph shows a dilation?
lukranit [14]
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6 0
2 years ago
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