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irinina [24]
3 years ago
13

4. Simplify this expression.*

Mathematics
1 answer:
polet [3.4K]3 years ago
8 0
I’m pretty sure that it’s C, because you distribute the 2 that makes it 2(10)+2x-8, then you multiply 2 by 10 and get 20+2x-8, combine like terms so 20-8=12 that leaves you with 2x+12.
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24?

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melamori03 [73]

Answer:

Answer:

safe speed for the larger radius track u= √2 v

Explanation:

The sum of the forces on either side is the same, the only difference is the radius of curvature and speed.

Also given that r_1= smaller radius

r_2= larger radius curve

r_2= 2r_1..............i

let u be the speed of larger radius curve

now, \sum F = \frac{mv^2}{r_1} =\frac{mu^2}{r_2}∑F=

r

1

mv

2

=

r

2

mu

2

................ii

form i and ii we can write

v^2= \frac{1}{2} u^2v

2

=

2

1

u

2

⇒u= √2 v

therefore, safe speed for the larger radius track u= √2 v

8 0
2 years ago
Solve for x.
Juli2301 [7.4K]

Answer:

x = 9

Step-by-step explanation:

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45 = 5 x 9

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Read 2 more answers
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