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Sav [38]
3 years ago
12

Can someone help please ?!?

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
8 0
Negative...
-10/7
positive
10/7
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Two boats leave the same place at the same time. The first boat heads due north at 10 kilometers per hour. The second boat heads
Maksim231197 [3]

Answer:

18.87 km/hr

Step-by-step explanation:

First boat is heading North with a speed of 10 km/hr.

Second boat is heading West with a speed of 16 km/hr.

Time for which they move = 2.5 hours

To find:

The speed at which the distance is increasing between the two boats.

Solution:

Let the situation be represented by the attached diagram.

Their initial position is represented by point O from where they move towards point A and point B respectively.

Distance = Speed \times Time

Distance\ OA = 10 \times 2.5 = 25\ km

Distance\ OB = 16 \times 2.5 = 40\ km

We can use Pythagorean Theorem to find the distance AB.

AB is the hypotenuse of the right angled \triangle AOB.

According to Pythagorean theorem:

\text{Hypotenuse}^{2} = \text{Base}^{2} + \text{Perpendicular}^{2}\\\Rightarrow AB^{2} = OA^{2} + OB^{2}\\\Rightarrow AB^2 = 25^2 + 40^2\\\Rightarrow AB^2 = 2225^2\\\Rightarrow AB^2 \approx 47.17\ km

The speed at which distance is increasing between the two boats is given as:

\dfrac{47.17}{2.5} \approx 18.87\ km/hr

4 0
2 years ago
I don’t know how to do this
mixas84 [53]

Answer:

Step-by-step explanation:

The first box should be 20.

The second box should be 40

The third box should be .2

The fourth box should be .6

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3 years ago
Simplify: StartRoot 324 EndRoot 1. Write the prime factorization of the radicand. StartRoot 324 EndRoot = StartRoot 2 times 2 ti
Savatey [412]

Answer:

  18

Step-by-step explanation:

To continue where you left off, ...

  \sqrt{2^2}\times\sqrt{3^2}\times\sqrt{3^2}=2\times 3\times 3=18

The square root of 324 is 18.

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Can you help me with this question I need the answers,please.
ivolga24 [154]

Answer:

a: 4

b: package and shopping costs

c: 1/2 (   (6-3)/(16-10) )

d: cost of shipping per pound

e: y= 1/2x + 4

f: 92

Step-by-step explanation:

Okay bunch of answers

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Is the sample mean difference within the confidence interval you computed in part A of this task?
Alenkasestr [34]

Answer:

xit the problem

Step-by-step explanation:

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