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3 years ago

7

a child has a collection of football cards. they are to be kept in a folder with 9 cards on each page.the child has 28 complete

sets of 12 cards. how manypages will be needed to store the cardss?

2 answers:

timofeeve [1]3 years ago

7 0

The answer is 37.7 :)

maria [59]3 years ago

5 0

Answer:

37.7

Step-by-step explanation:

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A 6 cm long spring extends to 9 cm when a 1 kg load is suspended from it. What would be its length if a 2 kg load were suspended

vampirchik [111]

Answer:

12 cm

Step-by-step explanation:

To calculate the length of a spring with a 2 kg load, compare the displacement of a 1 kg load and adjust accordingly.

When a 1 kg load is suspended from the spring, the spring which is 6 cm stretches to 9 cm. This is 3 cm longer due to the weight. If you attach a weight which is twice as much then the displacement will be twice as much. Instead of stretching an additional 3 cm, it will stretch 2*3 = 6 cm. Add this to the length of the spring and it stretches in total 6 + 6 = 12 cm.

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3 years ago

Solve 2(x + 1) = 2x + 5.

BlackZzzverrR [31]

Answer:

No solutions

Step-by-step explanation:

2(x+1)=2x+5

Expand the parentheses:

2x+2=2x+5

Subtract 2x from both sides:

2=5

Since this is not true, this equation has no solutions. Hope this helps!

4 0

3 years ago

Read 2 more answers

Convert 0.19¯ to a fraction.

padilas [110]

The fraction would be $\frac{19}{100}$
I hope that helps!
19/100

7 0

3 years ago

Read 2 more answers

Please Help me!!!

drek231 [11]

Step-by-step explanation:

The displacement of a particle d (in km) as a function of time t (in hours) is given by :

$d=2t^3+5t^2-3$

Displacement at t = 4 hours,

$d(4)=2(4)^3+5(4)^2-3=205\ km$

Velocity of particle is given by :

$v=\dfrac{dd}{dt}\\\\v=\dfrac{d(2t^3+5t^2-3)}{dt}\\\\v=6t^2+10t$

Velocity at t = 4 hours,

$v=6(4)^2+10(4)=136\ km/h$

Acceleration of the particle is given by :

$a=\dfrac{dv}{dt}\\\\a=\dfrac{d(6t^2+10t)}{dt}\\\\a=12t+10$

At t = 4 hours,

$a=12(4)+10=58\ km/h^2$

Therefore, the displacement, velocity and acceleration at t = 4 hours is 205 km, 136 km/h and 58 km/h² respectively.

7 0

3 years ago

What is the probability of spinning a 2 and flipping tails

Dimas [21]

If you mean getting a 2 on a dice then the answer would be
4/6 or 2/3

3 0

4 years ago