4 years ago

I need help on this question

Mathematics

1 answer:

rosijanka [135]4 years ago

3 0

I believe it is D. im not sure

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How many flowers, spaced every 3 in., are needed to surround a circular garden with a 150-ft radius? Use 3.14 for pi.

BARSIC [14]

Answer:

$3,768\ flowers$

Step-by-step explanation:

step 1

Find the circumference of the circular garden

The circumference of the circle is equal to

$C=2\pi r$

we have

$r=150\ ft$

$\pi=3.14$

substitute the values

$C=2(3.14)(150)=942\ ft$

step 2

<em>Convert feet to inches</em>

Remember that

$1\ ft=12\ in$

$942\ ft=942*12=11,304\ in$

step 3

Divide the circumference by 3 in to calculate the number of flowers

$11,304/3=3,768\ flowers$

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3 years ago

Given that A = (9,9,2), B = (1,3,5) and C = (5,6,4), find the vector equation of the line through A and B.

weqwewe [10]

Answer:

It's not C

Step-by-step explanation:

Sorry bud I tried to help you out but i guessed wrong on my test, atleast its not C though:)

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3 years ago

Please help me answer ASAP!

Schach [20]

Step-by-step explanation:

$x = 10 \\ \\ y = 10 \sqrt{2} \\ \\ \cos(45) = \frac{ \sqrt{2} }{2}$

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3 years ago

Rationalise the following: <br> (Root3-1) / (root3+1)

Thepotemich [5.8K]

Answer:

$2-\sqrt{3}$

Step-by-step explanation:

$\begin{aligned}\dfrac{\sqrt{3}-1}{\sqrt{3}+1}\times \dfrac{\sqrt{3}-1}{\sqrt{3}-1} &=\dfrac{(\sqrt{3}-1)(\sqrt{3}-1)}{(\sqrt{3}+1)(\sqrt{3}-1)}\\\\ & =\dfrac{\sqrt{3}\sqrt{3}-\sqrt{3}-\sqrt{3}+1}{\sqrt{3}\sqrt{3}-\sqrt{3}+\sqrt{3}-1}\\\\ & =\dfrac{4-2\sqrt{3}}{2}\\\\ & = 2-\sqrt{3}\end{aligned}$

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3 years ago

Consider f(x)=x+7 and g(x)=x^2-1 find (f(g(x))

Nonamiya [84]

F[g(x)]=x^2-1 +7
=x^2+6

Hope this can help.

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3 years ago