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2 years ago

Given vectors u = (-2, 3) and v = (-6, 9), what is the measure of the angle between u and v?

Mathematics

2 answers:

EleoNora [17]2 years ago

5 0

Answer:

I really don't know sorry but if didn't know then we what I even bother texting but whatever just wanted to let you know

elixir [45]2 years ago

5 0

I believe the Correct andwer is A

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the volume of metal in a scale model of a metal high tension tower is 54 cm cubed. The scale used was 1:50. it required 50 mm of

daser333 [38]

Answer:

6,750,000 cm³ = 6.75 m³

Step-by-step explanation:

a scale version means that the ratio of every dimension of scale vs. real object is 1/50.

volume is created by multiplying 3 dimensions.

so, going from scaling to real the volume has to be multiplied by 50×50×50 = 50³ = 125000

so, as for the scale model we needed 54 cm³, for the full size object we need 54×125000 = 6,750,000 cm³ of metal.

or to bring it to m³ (1m³ = 100×100×100 cm = 1000000 cm³)

that would be 6.75 m³ of metal.

3 0

2 years ago

Find the area. 5cm 3cm 4 cm

Ostrovityanka [42]

Answer:

6 cm²

Step-by-step explanation:

Since 3 side lengths are given, I assume that this figure is a triangle. The area of a triangle can be determined by using hero's formula.

$\text{Area of triangle} = \sqrt{\text{s(s - a)(s - b)(s - c)}$

⇒ s = Perimeter/2

⇒ a, b, and c = side lenths of triangle

Replacing a, b, and c as the given side lengths:

$\implies \text{Area of triangle} = \sqrt{\text{s(s - 5)(s - 3)(s - 4)}$

Determining the perimeter of the triangle:

$\text{Perimeter of triangle = Sum of it's side lengths}$

$\implies \text{Perimeter of triangle =}\ 5 + 4 + 3$

$\implies \text{Perimeter of triangle =}\ 12 \ \text{cm}$

Determining the half of perimeter:

$\text{Half of perimeter} = s = \dfrac{\text{Perimeter}}{2}$

$\implies s = \dfrac{12}{2}$

$\implies s = 6$

Replacing the value of "s" in the formula:

$\implies \text{Area of triangle} = \sqrt{\text{6(6 - 5)(6 - 3)(6 - 4)}$

Evaluating the area:

$\implies \text{Area of triangle} = \sqrt{\text{6(6 - 5)(6 - 3)(6 - 4)}$

$\implies \text{Area of triangle} = \sqrt{\text{6(1)(3)(2)}$

$\implies \text{Area of triangle} = \sqrt{\text{6(6)}$

$\implies \text{Area of triangle} = 6 \ \text{cm}^{2}$

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1 year ago

HELP DUE NOW! BRANLIEST AND LOTS OF PONTS

Lisa [10]

Answer:

I think it’s a

Step-by-step explanation:

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2 years ago

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On Tuesday, a local hamburger shop sold a combined total of 576 hamburgers and cheeseburgers. The number of cheeseburgers sold w

cestrela7 [59]

Answer:

check the picture

Step-by-step explanation:

I hope this helps

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2 years ago

Ryan has 8 kittens. Two are white. what fraction of the kittens are not white? Write in simplest form. I will brainliest

RideAnS [48]

Answer:

3/4

Because 6 are not white so 6/8 and divide each by 2

6 divided by 2 = 3

8 divided by 2 = 4

= 3/4

Step-by-step explanation:

Hope this helps her!!!

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2 years ago

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