2 years ago

Er cuts a board 3 feet long off the end of a board that is 6 feet long. How long is the remaining plece ol

Mathematics

1 answer:

Anna11 [10]2 years ago

7 0

Answer:

Step-by-step explanation:

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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

2 years ago

The triangle shown below has an area of 4 units^2 squared. Find the missing side.

KiRa [710]

Answer:

x = 4

Step-by-step explanation:

A = hb/2

4 = 2(x)/2

4 = x

6 0

2 years ago

Read 2 more answers

the sum of the first four terms of an A.p is 62.if the difference between 4 terms and 2nd terms is 14. find the first term and c

Oksana_A [137]

Answer:

-2 -4 -6 -8

Step-by-step explanation:

I got the answer off of khan academy

3 0

2 years ago

Help please Please I need help

Ipatiy [6.2K]

Answer:

D. -2 and 6

Step-by-step explanation:

Use the quadratic formula to put either -2 or 6 in and get it to equal 0.

6 0

3 years ago

I bought car of 650,000 and sold it for 520,000. Find the lost Percent ?

harkovskaia [24]

Answer:

20%

Step-by-step explanation:

520,000/650,000 = 0.8

Sold for 80% of original price

Lost percent = 100% - 80%

20%

4 0

2 years ago