Is anyone good with this? I need help finding the answer.

Mathematics

1 answer:

dybincka [34]3 years ago

3 0

To solve this problem, we have to find the perimeter of the shape.
we already know that two of the sides are 82m, all we need to do is find the circumference of the semicircles.
to find circumference, you multiply the diameter of a circle by pi. since we have two identical semicircles, we have one full circle. 66•3.14=207.24
207.24+82+82=371.24
the answer is 371.24m

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The perimeters if a triangle is 747 metres. The first side is 45 meters shorter than the second side and the third side is twice

tigry1 [53]

Let
x-----------> the first side
y-----------> the second side
z----------> the third side

we know that
x+y+z=747------> equation 1
x=y-45------> equation 2
z=2x-----> equation 3
substitute 3 in 1
x+y+[2x]=747-------> 3x+y=747--------> equation 4

resolve the system of equation 2 and equation 4
x=y-45
3x+y=747

using a graph tool
see the attached figure

the solution is
x=175.5 m
y=220.5 m
z=2x-----> z=2*175.5------> z=351 m

the answer is
x=175.5 m
y=220.5 m
z=351 m

4 0

3 years ago

A trader buys pens at $44 a dozen and sells them at $20 each. Find his profit if he sells 60 pens.

Stels [109]

60 pens/ A dozen pens= 5 packs of a dozen pens
$44*5= $220 total spent
$20*60=$1200 total money a trader gets
$1200-$220=$980 in profits.

Hope I didn't mess up for your sake.

4 0

3 years ago

HELP I NEED HELP ASAP

tino4ka555 [31]

I don’t know how to help you but there is an app called Math-way and if you take a picture of the problem it can tell you the x-intercept, y-intercept and everything else

8 0

3 years ago

AC and DB are chords that intersect at point H.

valentinak56 [21]

Answer:

16 units

Step-by-step explanation:

see the attached figure to better understand the problem

Applying the Intersecting Chords Theorem

we have that

$AH*HC=DH*HB$