Carla named a fraction that was not a multiple of 3/8. Which fraction could she have named?

Mathematics

1 answer:

jeka943 years ago

8 0

Answer:

ofcurse Three on eight 3/8

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MariettaO [177]

Answer:

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Step-by-step explanation:

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Please help me, What is the 6th term of the geometric sequence 1024, 528, 256...?

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3 years ago

Let u = (1, 2 -2), v= (2, 1, 3) and w = j + 4k. a) Find cos theta, where theta is the angle in degrees between u and w.

vodka [1.7K]

Answer: The value of cos theta is -0.352.

Step-by-step explanation:

Since we have given that

$\vec{u}=1\hat{i}+2\hat{j}-2\hat{k}\and\\\\\vec{w}=\hat{j}+4\hat{k}$

We need to find the cos theta between u and w.

As we know the formula for angle between two vectors.

$\cos\ \theta=\dfrac{\vec{u}.\vec{w}}{\mid u\mid \mid w\mid}$

So, it becomes,

$\cos \theta=\dfrac{2-8}{\sqrt{1^2+2^2+(-2)^2}\sqrt{1^2+4^2}}\\\\\cos \theta=\dfrac{-6}{\sqrt{17}\sqrt{17}}=\dfrac{-6}{17}=-0.352\\\\\theta=\cos^{-1}(\dfrac{-6}{17})=110.66^\circ$

Hence, the value of cos theta is -0.352.

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3 years ago

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lorasvet [3.4K]

0.25q + 0.1d = 4.95
d = 3q

0.25q + 0.1(3q) = 4.95
 0.25q + 0.3q = 4.95
 0.55q = 4.95
 0.55 0.55
 q = 9
0.25(9) + 0.1d = 4.95
 2.25 + 0.1d = 4.95
- 2.25 - 2.25
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2 x - 3 y = 9. Is What I Got :)

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2 years ago

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