3 years ago

HELP I NEED HELP ASAP

Mathematics

1 answer:

Natalija [7]3 years ago

3 0

Answer:

Step-by-step explanation:

A is correct, if it's any help... now?

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In the calm waters of an inlet, Manon's boat moves with a velocity (speed and direction) vector \vec{b_1} = (3,4) b 1 =(3,4)

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Answer with Step-by-step explanation:

We are given that

$b_1=(3,4)$

$b_2=(1,1)$

We have to find the speed of river's current and the direction of current flowing.

$b=b_2-b_1=(1,1)-(3,4)=(-2,-3)$

Speed of river's current= $\mid b\mid$

Speed of river's current= $\sqrt{(-2)^2+(-3)^2}$

Speed of river's current= $\sqrt{13} m/s$

By using the formula

$\mid r\mid =\sqrt{x^2+y^2}$

Direction of current flowing, $\theta=tan^{-1}(\frac{y}{x})$

$\theta=tan^{-1}(\frac{-3}{-2})=56.3^{\circ}$

The angle lies in third quadrant therefore

$\theta=180+56.3=236.3^{\circ}$

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3 years ago

6 times a number is 27 less then the square of that number find the positive soloution

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Answer:

Step-by-step explanation:

n2-27=6n

Than n (exponet) 2 - 27 - 6n = 0

Now factor (n-9)(n+3)=0

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2 years ago

Paul is 1.72 m tall, Trisha is 1.58 m tall, Ash is 1.55 m

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Who is the tallest?

- Ben because he is 0.04 m taller than Paul

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- Sophie

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What is the volume of the rectangular prism?

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Answer: 360 cubic cm

Step-by-step explanation: you just multiply all the numbers.

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A botanist is using two types of plants for an experiment. She writes inequalities to model the constraints on the number of eac

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The vertex (5,39)

5 is the value of x. 39 is the value of y. y is the cost function of the minimum value in dollars.

(5,39) vertex means that <span>Buying five of each type of plant costs $39, which is the lowest possible cost.</span>

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3 years ago

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