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tekilochka [14]
3 years ago
11

Brian is making 5 triangular flags, each with the dimensions shown below.

Mathematics
2 answers:
boyakko [2]3 years ago
7 0
Fabric needed: 1620 inches^2    or    135 feet^2

^2 means squared in case you didn't know.
Harrizon [31]3 years ago
3 0

Answer:

it is C

Step-by-step explanation:

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What is the approximate circumference of a circle with a radius of 8.5 meters? Use π ≈ 3.14.
vovangra [49]
Circumference = 2 pi r
Circumference = 2 x 3.15 x 8.5 m
Circumference = 53.4 metres
4 0
3 years ago
IT IS FOR 100 POINTS
strojnjashka [21]

Answer:

See below

Step-by-step explanation:

I think it’s four less than the quotient of a number cubed and seven, increased by three

I hope you get this right!

6 0
3 years ago
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Find the area and the perimeter of the shaded regions below. Give your answer as a completely simplified exact value in terms of
____ [38]

Answer:

So we have a triangle and a semicircle.

If the triangle is equilateral, this is:

AB = BC = 6cm

Then the area of the triangle is equal to (base*height)/2

in this case:

A = (6*6)/2 = 36/2 = 18cm^2.

And the diameter of the semicircle is equal to 6cm, then the diameter is 3cm

And if the area of a circle is A = pi*r^2

then the area of half a circle is:

A = (pi/2*)3^2 = pi*4.5cm^2

Then, the area of the triangle plus the area of the semicircle is:

Total area = 18cm^2 +  pi*4.5^2

3 0
3 years ago
In the last​ year, a total of 2727 earthquakes occurred in the country. Of​ these, 85.3 % were minor tremors with magnitudes of
Komok [63]

Answer:

Minor earthquakes occurred in the country in the last​ year were<u> 2326</u>.

Step-by-step explanation:

Given:

In the last​ year, a total of 2727 earthquakes occurred in the country.

Of​ these, 85.3 % were minor tremors with magnitudes of 3.9 or less on the Richter scale.

Now, to find the minor earthquakes occured in the country last year.

<em>Total earthquakes occurred in the country = 2727.</em>

<em>The percent of minor earthquakes = 85.3%</em>.

Now, to get the number of minor earthquakes:

85.3% of 2727.

=\frac{85.3}{100} \times 2727.

=\frac{232613.1}{100}

=2326.131

<em>The number of minor earthquakes nearest whole number = 2326.</em>

Therefore, minor earthquakes occurred in the country in the last​ year were 2326.

3 0
3 years ago
A projectile with an initial velocity of 48 feet per second is launched from a building 190 feet tall. The path of the projectil
Furkat [3]

Answer:

t = 5.25 seconds

Step-by-step explanation:

Given that,

A projectile with an initial velocity of 48 feet per second is launched from a building 190 feet tall. The path of the projectile is modeled using the equation:

h(t)=-16t^2+48t+190

It is assumed to find the time when the projectile will hit the ground. When the projectile hit the ground, its height is equal to 0 such that,

-16t^2+48t+190=0

It forms a quadratic equation such that,

t=\dfrac{-b+\sqrt{b^{2}-4ac } }{2a},\dfrac{-b-\sqrt{b^{2}-4ac } }{2a}\\\\t=\dfrac{-48+\sqrt{(48)^{2}-4\times (-16)(190) } }{2\times (-16)},\dfrac{-48-\sqrt{(48)^{2}-4\times (-16)(190) } }{2\times (-16)}\\\\t=-2.25, 5.25

So, the projectile will hit the ground at t = 5.25 seconds.

3 0
3 years ago
Read 2 more answers
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