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3 years ago

15

Hey bag contains blue marbles and red marbles 17 in tomorrow the number to blue marbles seven less than two times a number of re

d marbles how many blue marbles are there

1 answer:

nikitadnepr [17]3 years ago

5 0

There are 20 blue marbles in the bag.

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Answer:

-3

Step-by-step explanation:

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3 years ago

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Molly shot 20 baskets in 4 minutes. Nico shot 42 baskets in 6 minutes. How many more baskets did Nico shoot per day minute?

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Nico shot 2 baskets per mintue

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4 years ago

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Which two estimates is the quotient 345 dived 8 between

maks197457 [2]

Answer:

im pretty sure its 43.5

Step-by-step explanation:

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3 years ago

<img src="https://tex.z-dn.net/?f=%20%28%7B%207v%7D%5E%7B2%7D%20%29" id="TexFormula1" title=" ({ 7v}^{2} )" alt=" ({ 7v}^{2} )"

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4 years ago

What is the value of cosθ given that (−2, −3) is a point on the terminal side of θ ?

snow_tiger [21]

Answer:

-0.555

Step-by-step explanation:

The terminal point of the vector in this problem is

(-2,-3)

So, it is in the 3rd quadrant.

We want to find the angle $\theta$ that gives the direction of this vector.

We can write the components of the vector along the x- and y- direction as:

$v_x = -2\\v_y = -3$

The tangent of the angle will be equal to the ratio between the y-component and the x-component, so:

$tan \theta = \frac{v_y}{v_x}=\frac{-3}{-2}=1.5\\\theta=tan^{-1}(1.5)=56.3^{\circ}$

However, since we are in the 3rd quadrant, the actual angle is:

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

So now we can find the cosine of the angle, which will be negative:

$cos \theta = cos(236.3^{\circ})=-0.555$

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3 years ago