2 years ago

Find the circumference of the circle below to the nearest tenth Use 3.14 for a

Mathematics

1 answer:

AnnyKZ [126]2 years ago

8 0

Answer:

125.6

Step-by-step explanation:

all you have to do is multiple the 3.14 with 40 cm to get 125.6 cm

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Find the volume of a trough 5 meters long whose ends are equilateral triangles, each of whose

yawa3891 [41]

Answer:

$V=5\sqrt{3}\ m^3$

Step-by-step explanation:

we know that

The volume of a trough is equal to

$V=BL$

where

B is the area of equilateral triangle

L is the length of a trough

step 1

Find the area of equilateral triangle B

The area of a equilateral triangle applying the law of sines is equal to

$B=\frac{1}{2} b^{2} sin(60\°)$

where

$b=2\ m$

$sin(60\°)=\frac{\sqrt{3}}{2}$

substitute

$B=\frac{1}{2}(2)^{2} (\frac{\sqrt{3}}{2})$

$B=\sqrt{3}\ m^{2}$

step 2

Find the volume of a trough

$V=BL$

we have

$B=\sqrt{3}\ m^{2}$

$L=5\ m$

substitute

$V=(\sqrt{3})(5)$

$V=5\sqrt{3}\ m^3$

3 0

3 years ago

5/6 - 7/12? what is it

IgorLugansk [536]

Answer:

3/10

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Select the correct answer. Wayne plays multiple instruments in a rock band. He also composes the songs. He takes 36 weeks to wri

Reil [10]

Answer:

3 weeks for one song

Step-by-step explanation:

The function would be y = 3x + b

7 0

3 years ago

Sixty times four with a whole number fraction

Zina [86]

60×4=240

so 240/1 and 60×4
-------
1
both are equal to 240

5 0

3 years ago

Given the definitions of f(x) and g(x) below, find the value of (fog)(-8).

Masja [62]

Answer:

$(f \circ g)(-8) = 16$

Step-by-step explanation:

The given function are;

f(x) = x² - 3·x - 12, and g(x) = -x - 12

$(f \circ g)(x) = f(g(x))$

Therefore;

$(f \circ g)(-8) = f(g(-8))$

g(-8) = -(-8) - 12 = 8 - 12 = -4

∴ f(g(-8)) = f(-4) = (-4)² - 3×(-4) - 12 = 16

Therefore;

$(f \circ g)(-8) = f(g(-8)) = 16$

3 0

3 years ago