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3 years ago

How do you solve, j+2j+3j=-20+-16

Mathematics

1 answer:

Natalija [7]3 years ago

5 0

Answer:

j = -6

Step-by-step explanation:

j + 2j + 3j = -20 + (-16)

6j = -36

j = -6

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A boat is pulled toward a dock by means of a rope wound on a drum that is located 6 ft above the bow of the boat. If the rope is

Monica [59]

Answer:

Step-by-step explanation:

Given that:

The height of the dock (h) = 6

Let represent d to be the distance between the boat and the dock

Let the length of the rope between the boat and the drum be denoted by (l)

Then, the rate of change for the length of the rope be:

dl/dt = -5 ft/s

Using Pythagoras rule to determine the relationship between these values, we have:

$l^2 = h^2 +d^2$

$l^2 = 6^2 + d^2$

$l^2 = 36 + d^2$

We relate to: $2l * \dfrac{dl}{dt} = 2d* \dfrac{dd}{dt}$

From the question;

l = 34,

So to find $\dfrac{dd}{dt}$ , we get;

$d = \sqrt{l^2 - 36}$

$d = \sqrt{34^2 - 36}$

$d = \sqrt{1156- 36}$

$d = \sqrt{1120}$

d = 33.46

So, we have:

$\dfrac{dd}{dt}= \dfrac{l}{d} \times \dfrac{dl}{dt}$

$\dfrac{dd}{dt}= \dfrac{34}{33.46} \times - 5$

$\dfrac{dd}{dt}= 1.016 \times - 5$

$\dfrac{dd}{dt}=-5.08 \ ft/sec$

4 0

3 years ago

- 6.5 ( n - 5 )= 18.2

d1i1m1o1n [39]

Answer:

N=11/5

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What is the nearest ten and hundred of 829 when it is round

stiks02 [169]

$829 \to 830\ (ten)\\\\829 \to 800 \ (hundred)$

6 0

3 years ago

Read 2 more answers

Houa's family took a road trip to the Grand Canyon. Houa fell asleep 29% of the way

gtnhenbr [62]

Answer:

232 miles had travelled when Houa fell asleep.

Step-by-step explanation:

1. .29 x 800 = 232

7 0

3 years ago

Help please!!!! Weekly time card $14.50 hr

olganol [36]

Answer:

123.25

Step-by-step explanation:

Am = 4 hours

4x14.5= 58

Pm = 4 hrs 30 mins

4x14.5=58

Then multiply 30(14.5) which gives you 435. Then divide by 60. That gives you 7.25

You could also divide 14.5 by 2 since 30 minutes is half of an hour.

Then add

58+58+7.25

123.25

5 0

4 years ago