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2 years ago

A tractor-trailer travels 205.296 miles in 3.12 hours . What is the speed at which the tractor-trailer in traveling?

Mathematics

1 answer:

jolli1 [7]2 years ago

4 0

Answer:

i think 66.5 miles per hour

Step-by-step explanation:

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Solve for x Pls help me again. :(

Alexus [3.1K]

Step-by-step explanation:

80+60+x+51= 180

191+x= 180

x= -11

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2 years ago

Find the work done by force dield f(x,y)=x^2i+ye^xj on a particle that moves along parabola x=y^2+1 from(1,0) to (2,1)

NemiM [27]

Call the parabola $P$ , parameterized by $\mathbf r(y)=\langle y^2+1,y\rangle$ with $0\le y\le 1\rangle$ . Then the work done by $\mathbf f(x,y)$ along $P$ is

$\displaystyle\int_P\mathbf f(x,y)\cdot\mathrm d\mathbf r=\int_{y=0}^{y=1}\mathbf f(x(y),y)\cdot\dfrac{\mathrm d\mathbf r(y)}{\mathrm dy}\,\mathrm dy$
$=\displaystyle\int_0^1\langle(y^2+1)^2,ye^{y^2+1}\rangle\cdot\langle2y,1\rangle\,\mathrm dy$
$=\displaystyle\int_0^1(2y^5+4y^3+2y+ye^{y^2+1})\,\mathrm dy=\frac73-\frac e2+\frac{e^2}2$

8 0

3 years ago

A frog has fallen into a pit that is 30m deep. Each day the frog climbs 3m but falls 2m at night. How many days those it takes t

lions [1.4K]

Answer:

28 days

Step-by-step explanation:

because the frog climbs 3m in the day, but falls 2m at night, it technically climbs 1m every 24 hours. this means after the 1st day, it will have climbed a total of 1m, on the second, it will have climbed a total of 2m, and so on. however, when it gets nearer to the top, that's when things start to change. after the 26th day, it will have climbed 26m. on the 27th day, it will be 27m, but then when it jumps 3m the next day, it will reach 30m total before it falls during the night and it will be able to get out of the hole.

i hope this helps! :)

8 0

3 years ago

Plz help timed test I’ll give extra points

balu736 [363]

Answer:

am not really sure but ig the answer is B 

Step-by-step explanation:

Plz help timed test I’ll give extra points

3 0

2 years ago

At the start of the week, Ladasha’s checking account had a balance of $34. She deposited $50 each day for three days. She made a

Rama09 [41]

34 + 50 *3 - 60+22 hope this helps out

5 0

3 years ago

Read 2 more answers