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Anika [276]
3 years ago
11

#1 please! will give great rating! please explain to!

Mathematics
2 answers:
ddd [48]3 years ago
7 0
Find the perimiter now

that is right triangle so
when hpotonouse is c and hthe lgs are a and b
a²+b²=c²

given
leg is 8
hypotonuse is 13

8²+b²=13²
64+b²=169
minus 64 from both sides
b²=105
sqrt both sides
b=√105

find total perimiter
8+13+√105=21+√105

times 1/32 for scale
0.65625+0.32021721143623744947565745876628=
0.97646721143623744947565745876628 m=
97.646721143623744947565745876628 cm

A is the answer
Kitty [74]3 years ago
7 0
Here, third side of actual sail, 
p² = h² - b²
p² = 13²- 8²
p = √169-64
p = √105

Perimeter = 8 + 13 + √105 = 21 + √105
p = 21 + 10.2469
p = 31.24

Now, model = 31.24/32 = 97.65 cm

In short, Your Answer would be Option A

Hope this helps!
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snow_lady [41]

Step-by-step explanation:

500:1000

500/500:1000/500(both divided by 500-

1:2

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3 years ago
This Christmas, your brother Jack will be 2 years from being twice as old as your sister Jen. The sum of Jacks age and three tim
zhannawk [14.2K]

Age of Jen is 13.6 years old

<em><u>Solution:</u></em>

Let "x" be the age of Jack and "y" be the age of Jen

Given that This Christmas, your brother Jack will be 2 years from being twice as old as your sister Jen

The above sentence can be written mathematically as:

Jack age + 2 = twice of age of Jen

x + 2 = 2y\\\\x = 2y - 2---- eqn 1

The sum of Jacks age and three times Jen's age is 66

Jack age + three times Jen age = 66

x + 3y = 66 ---- eqn 2

Substitute eqn 1 in eqn 2

2y - 2 + 3y = 66

5y - 2 = 66

5y = 68

<h3>y = 13.6</h3>

Thus age of Jen is 13.6 years old

5 0
3 years ago
2x + y - z = 3<br> -x + 2y + 4z = -3<br> x – 2y - 3z = 4
mario62 [17]

Answer:

x=3, y=-2, z=1

Step-by-step explanation:

I solved by substitution

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Answer:

Step-by-step explanation:

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Some please help put thanks
Nookie1986 [14]
The interior angles of a 9-agon add up to (9 -2)*180° = 1260°. The sum of the given angles is
.. 1139° +x° = 1260°
.. x = 1260 -1139 = 121

The missing angle measure is 121°.

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The supplement of each interior angle is its corresponding exterior angle. The sum of exterior angles of any convex polygon is always 360°. Another way to approach this problem is to add the exterior angles.
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