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3 years ago

Someone plz help me, thx:)

Mathematics

1 answer:

bija089 [108]3 years ago

4 0

$\pi=\dfrac{\text{circumference of a circle}}{\text{diameter of a circle}}\\\\\pi=3.14159265359...\\\\\pi\ it's\ irrational\ number\\\\the\ irrational\ number\ is\ real\ number\\\\Therefore\ your\ answer:\\\\\boxed{\text{irrational numbers}}\\\boxed{\text{real numbers}}$

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Find the value of x help 10 points

MrRissso [65]

Answer:

x = 5.67

Step-by-step explanation:

We are given a right angled triangle with a length of the hypotenuse 8 with the remaining two sides (base and perpendicular) that are equal to each other.

Assuming the two equal legs of this right angled triangle to be x, we can use the Pythagoras Theorem to find the value of x.

$(x)^2+(x)^2=(8)^2$

$2x^2=64$

Taking square root at both the sides to get:

$\sqrt{2x^2} =\sqrt{64}$

$1.41x=8\\\\x=5.67$

Therefore, x = 5.67.

7 0

3 years ago

this year, a small business had a total revenue of $54,400. if this is 28% more than their total revenue the previous year, what

xxTIMURxx [149]

Answer:

42,5000

Step-by-step explanation:

8 0

2 years ago

70/800 as a terminating decimal

erastovalidia [21]

The answer would be 0.0875.

5 0

3 years ago

Root 3 cosec140° - sec140°=4 prove that

Lorico [155]

Answer:

Step-by-step explanation:

We are to show that $\sqrt{3} cosec140^{0} - sec140^{0} = 4\\$

Proof:

From trigonometry identity;

$cosec \theta = \frac{1}{sin\theta} \\sec\theta = \frac{1}{cos\theta}$

$\sqrt{3} cosec140^{0} - sec140^{0} \\= \frac{\sqrt{3} }{sin140} - \frac{1}{cos140} \\= \frac{\sqrt{3}cos140-sin140 }{sin140cos140} \\$

From trigonometry, 2sinAcosA = Sin2A

$= \frac{\sqrt{3}cos140-sin140 }{sin140cos140} \\\\= \frac{\sqrt{3}cos140-sin140 }{sin280/2}\\= \frac{4(\sqrt{3}/2cos140-1/2sin140) }{2sin280}\\\\= \frac{4(\sqrt{3}/2cos140-1/2sin140) }{sin280}\\since sin420 = \sqrt{3}/2 \ and \ cos420 = 1/2 \\ then\\\frac{4(sin420cos140-cos420sin140) }{sin280}$

Also note that sin(B-C) = sinBcosC - cosBsinC

sin420cos140 - cos420sin140 = sin(420-140)

The resulting equation becomes;

$\frac{4(sin(420-140)) }{sin280}$

= $\frac{4sin280}{sin280}\\ = 4 \ Proved!$

3 0

3 years ago

In Stephen King’s short story collection “Skeleton Crew” there is a story called “The Raft”. In this story, four college friends

USPshnik [31]

Answer:

A) r=2t

B) 4 $\pi$ t²

C) 4 $\pi$ (30)² which will end up being 11310 in²

Step-by-step explanation:

A) If it increases 2 inches every minute, you would take that and put it with the t, aka time.

B) A= $\pi$ r² which will translate into A= $\pi$ (2)²

C) You take the half-hour, which is 30 minutes, and translate that into t then place that into your calculator and get an answer of 11,309.73 and then round up to the whole number

7 0

3 years ago