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Degger [83]
3 years ago
5

Can someone match them fast plz

Mathematics
1 answer:
Ghella [55]3 years ago
3 0

Answer:

the number of words made = w

the number of tiles not used = t

the points earned from words made = 10w

the points taken away from tiles not used = 3t

(srry if this is wrong but I believe it's correct)

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A fan has 2000 J of kinetic energy. If the angular velocity of the fan is doubled,
DanielleElmas [232]

The new Kinetic energy is 8000 J

Step-by-step explanation:

Step 1 :

Given,

The Kinetic energy of the fan = 2000J

We need to find  new kinetic energy when the angular velocity is doubled.

Step 2 :

We have

KE = \frac{1}{2 } × m × v² = 2000

where m represents the mass and  v represents the singular velocity

v = r ω where

r is radius of  fan and ω is the angular velocity.

Given that the angular velocity is doubled  singular velocity is also doubled. since the radius of the fan is the same in both cases we have

the new velocity = 2rω = 2v

So the KE = \frac{1}{2} m(new velocity)² = \frac{1}{2} m(2v)² = 4 (\frac{1}{2} mv²) = 4 (2000) = 8000 J

Step 3 :

Answer :

The new Kinetic energy is 8000 J

4 0
2 years ago
Solve -5t = 60 <br><br> 65<br> -6<br> 6<br> 55
defon
When you are asked to solve an equation, you need to isolate the variable which is t in this case. To isolate t, you would divide both sides by -5 and be left with t=-6 which is the final answer.

I hope this helps.
8 0
3 years ago
Round to the nearest​
dedylja [7]

Answer:

where is the question?

3 0
3 years ago
How do you solve this problem?
enot [183]
Easy, it says "for ANY positive integer" so just test any positive integer

remember that n! means times all integers from 1 to that number n

lets try 1

(1+1)!/(1!)-1=
(2!)/(1!)-1=
2/1-1=
2-1=
1

if you don't believe me, try 2
(2+1)!/(2!)-2=
(3!)/(2!)-2=
(6)/(2)-2=
3-2=
1

te answer is 1, B


and number 9
easy, remember the exponential law
(x^m)(x^n)=x^(m+n)
jsut add the exponents
first gropu like bases
(r^2r^2/3)(t^1/2t^-3/2)
add bases
(r^2 and 2/3)(t^-1)=
(r^2∛(r^2))(1/t)=
\frac{r^{2} \sqrt[3]{r^{2}} }{t}
5 0
3 years ago
Show 0.00015 in scientific notation
Misha Larkins [42]
I think that the answer is 15*10^5
3 0
3 years ago
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