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AURORKA [14]
3 years ago
6

Which is the equation of a line that is perpendicular to 6x – 4y = 9?

Mathematics
1 answer:
natulia [17]3 years ago
8 0

6x – 4y = 9

4y = 6x - 9

y = 6/4 x - 9/4

y = 3/2 x - 9/4 this line has slope = 3/2


perpendicular line, slope is opposite and reciprocal so slope of this line = -2/3


answer:

A. y= - 2/3 x - 4 (only this line has slope = -2/3)

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A boat sails on a bearing of 038°anf then 5km on a bearing of 067°.
I am Lyosha [343]

This question is not complete

Complete Question

A boat sails 4km on a bearing of 038 degree and then 5km on a bearing of 067 degree.(a)how far is the boat from its starting point.(b) calculate the bearing of the boat from its starting point

Answer:

a)8.717km

b) 54.146°

Step-by-step explanation:

(a)how far is the boat from its starting point.

We solve this question using resultant vectors

= (Rcos θ, Rsinθ + Rcos θ, Rsinθ)

Where

Rcos θ = x

Rsinθ = y

= (4cos38,4sin38) + (5cos67,5sin67)

= (3.152, 2.4626) + (1.9536, 4.6025)

= (5.1056, 7.065)

x = 5.1056

y = 7.065

Distance = √x² + y²

= √(5.1056²+ 7.065²)

= √75.98137636

= √8.7167296826

Approximately = 8.717 km

Therefore, the boat is 8.717km its starting point.

(b)calculate the bearing of the boat from its starting point.

The bearing of the boat is calculated using

tan θ = y/x

tan θ = 7.065/5.1056

θ = arc tan (7.065/5.1056)

= 54.145828196°

θ ≈ 54.146°

7 0
2 years ago
10 × 100+ 2749 × 1828827
Annette [7]

1000 + 5027445423 = 5027446423

6 0
3 years ago
Read 2 more answers
At a car dealership yesterday, the ratio of trucks sold to cars sold was 5.6. If the dealership sold 30 cars, how many trucks we
aleksley [76]

Answer:

25

Step-by-step explanation:

ratio 5:6

\frac{5}{6} = \frac{x}{30}

6x = 5(30)

6x = 150

x = 25

3 0
2 years ago
An aquarium has a base area of 6 square feet and a height of 2 feet. Will the aquarium fit in 15 cubic feet of space? Explain wh
Brums [2.3K]

Answer:

Yes, the aquarium <u>will</u> fit in 15 cubic feet of space.

Step-by-step explanation:

Given:

An aquarium has a base area of 6 square feet and a height of 2 feet.

Now, to find will the aquarium fit in 15 cubic feet of space or not.

<em>So, as given the dimensions:</em>

Base area = 6 square feet.

Height = 2 feet.

Now, to get the volume of aquarium by using formula:

Volume=base\ area\times height\\\\Volume=6\times 2\\\\Volume=12\ cubic\ feet.

<u><em>As, the volume of aquarium is 12 cubic feet.</em></u>

<u><em>And, the aquarium to be fit in 15 cubic feet space. So, 15 is more than 12.</em></u>

<u><em>Thus, the aquarium will be fit in 15 cubic feet space.</em></u>

Therefore, the aquarium will fit in 15 cubic feet of space.

7 0
2 years ago
Use lagrange multiplier techniques to find the local extreme values of f(x, y) = x2 − y2 − 2 subject to the constraint x2 + y2 =
dexar [7]
Given f(x,\ y)=x^2-y^2-2 subject to the constraint x^2+y^2=16

Let g(x,\ y)=x^2+y^2.

The gradient vectors of f and g are:

\nabla f(x,\ y)=\langle2x,-2y\rangle and \nabla g(x,\ y)=\langle2x,2y\rangle

By Lagrange's theorem, there is a number \lambda, such that

\langle2x,-2y\rangle=\lambda\langle2x,2y\rangle=\langle2\lambda x,2\lambda y\rangle

\lambda=\pm1

It can be seen that f(x,\ y)=x^2-y^2-2 has local extreme values at the given region.
6 0
3 years ago
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