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Oksanka [162]
4 years ago
12

4.2 decreased by the quantity 12 plus a number

Mathematics
1 answer:
Illusion [34]4 years ago
5 0

Answer and Step-by-step explanation:

This is the same thing as:

<u>4.2 - (12 + x)</u>

The 4.2 is being subtracted by the value of 12 and a number, denoted as x.

<u><em>#teamtrees #PAW (Plant And Water)</em></u>

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What is the momentum of each hockey player? Hockey player 1 has a mass of 65 kg and a velocity of 3.8 m/s
DaniilM [7]

Answer:

Momentum of  hocking player 1: 247\ kg\ m/s

Hockey player 2: =249.4\ kg\ m/s

Step-by-step explanation:

For first hockey player :

Given that

mass (m) =65\ kg

Velocity (v) =3.8\ m/s

p=mv\................(1)

where p is momentum

put the value in equation (1)

p=65\times3.8\\\\p=247kg\times m/s

For second hockey player :

Given that

mass (m) =58\ kg

velocity (v) =4.3\ m/s

p=mv\ ...............(2)

Where p is momentum

put the value in equation (2)

p=58\times4.3\\p=249.4\ kg\times m/s

6 0
3 years ago
The length of a rectangle is 4ft less than its width. The area of the rectangle is 60ft^2. Find the length and the width of the
irinina [24]

Answer: The length is 6 feet and the width is 10 feet.

Step-by-step explanation: The question has specified the area as 60 (square feet) and the length and width are yet unknown. However we know that the length is 4 feet less than the width. What this means is that, if the width is W, then the length is W - 4.

We can now write an equation for the area of the rectangle as follows;

Area = L x W

60 = (W - 4) x W

60 = W^2 - 4W

If we rearrange all terms on one side of the equation, we now have

W^2 - 4W - 60 = 0

This is a quadratic equation and by factorizing, we now have

(W + 6) (W - 10) = 0

Hence,

Either W + 6 = 0 and then W = -6

Or W - 10 = 0 and then W = 10

We know that the side of the rectangle cannot be a negative value, so we go with W = 10.

Having calculated W as 10, the length now becomes

L = W - 4

L = 10 - 4

L = 6

Therefore, length = 6 feet and width = 10 feet

3 0
3 years ago
PLEASE HELP FAST! <br> What is the value of x? <br> 6<br> 8<br> 10<br> 12
Novosadov [1.4K]

Answer:

x = 8

Step-by-step explanation:

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12x+62+ 66+ 77+59 = 360

Combine like terms

12x+264 = 360

Subtract 264 from each side

12x+264-264 = 360-264

12x =96

Divide by 12

12x/12 = 96/12

x=8

5 0
3 years ago
6(3u+4) please help I am in a classwork
frozen [14]

Answer:

18u+24

Step-by-step explanation:hope this helps xxx

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