3 years ago

Which of the following statements is false?

Mathematics

1 answer:

Studentka2010 [4]3 years ago

3 0

A think it’s a

Because I’m right

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What is the measure of the sides of a square with an area of 49 inches

Lunna [17]

Answer:

7 inches

Step-by-step explanation:

area of square=l^2

49=l^2

$\sqrt{49$ =l

7=l

therefore the sides of a triangle is 7 inches.

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How do you convert repeating decimals to fractions

irga5000 [103]

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Step-by-step explanation:

Hope this helps. You always change the denomiter to 99 for repeating decimal. Good luck

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4 years ago

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A particle starts at the point P=(−1,1,3)P=(−1,1,3) and moves along a straight line toward Q=(−4,4,5)Q=(−4,4,5) at a speed of 7

zvonat [6]

Answer: (-1,1,-3) + 7 x t x (3,-2,-8)/ $\sqrt{77} \\$

Step-by-step explanation:

The parametric vector equation for the position of particle is given as:

We have P= (-1,1-3)

Q= (-4,4,5)

So PQ vector= (-1+4,1-3, -3-5)

PQ = (3,-2,-8)

Magnitude of this vector= $\sqrt{(3)^2+(-2)^2+(-8)^2}$

Magnitude= $\sqrt{77} \\$

So unit vector= (3, -2, -8)/ $\sqrt{77} \\$

Now the equation is as:

P + 7 x t x unit vector = (-1,1,-3) + 7 x t x (3,-2,-8)/ $\sqrt{77} \\$

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3 years ago

Sin =9/15 . Find tan 0

ELEN [110]

Answer:

c. 9/12

Step by step explanation.

Given: sin = 9/15

and,

$sin = \frac{opp.}{hyp.}$

$tan = \frac{opp.}{adj.}$

thus, find adj. side

by using Pythagoras theorem

${c }^{2} = {a}^{2} + {b}^{2}$

then,

let adj. side be a^

${a}^{2} = {c}^{2} - {b }^{2} \\ {a}^{2} = {15 }^{2} - {9}^{2} \\ {a}^{2} = 144 \\ a = 12$

thus,

adj. side is 12

then,

tan of the angle = 9/12

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3 years ago