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DIA [1.3K]
3 years ago
5

Mhanifa can you please help? This is due asap!

Mathematics
1 answer:
sammy [17]3 years ago
7 0

Answer:

(2)

RSTV is a quadrilateral

Interior angles of a quadrilateral sum to 180

<u>Sum of given angles:</u>

  • 2n + 6n + 2n + 5n = 180°
  • 15n = 180°
  • n = 12°

<u>The angles are:</u>

  • 2*12°= 24°, 6*12° = 72°, 2*12° = 24°, 5*12° = 60°

(3)

<u>Sum of angles of a regular 18-gon:</u>

  • S = 180°(18 - 2) = 2880°

<u>Each interior angle is:</u>

  • 2880°/18 = 160°

(4)

<u>Sum of interior angles of a convex heptagon (7-sided polygon):</u>

  • S = 180°(7 - 2) = 900°

(5)

Sum of exterior angles of any polygon is 360°

<u>Each exterior angle of a regular nonagon (9-sided polygon) is:</u>

  • 360°/9 = 40°

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Work out the value of: 5x - 2y when x = 3 and y = 4
KATRIN_1 [288]
The expression is 5x - 2y
Use PEMDAS and work out the rest
x = 3 and y = 4
5 x = 5 x 3 = 15
2 y = 2 x 4 = 8
15( x ) - 8 (y) = 7
The answer is 7

Hope This Helps You!
Good Luck Studying :)
4 0
3 years ago
Read 2 more answers
Find the equation of the linear function represented by the table below in the slope-intercept form.
MAXImum [283]

Answer:

y=x-32

Step-by-step explanation:

y=mx+b where m is the slope and b is the y-intercept.

slope=change in y/change in x

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2 years ago
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8 0
2 years ago
I need to know the perimeter because i can't figure out some of the side lengths.
blsea [12.9K]
The primeter is the outside p=2+2 +3+1+1 so the primiter is 9
3 0
3 years ago
Question Help
lorasvet [3.4K]

Answer:

The speed of the boat is 20 km/hr

Step-by-step explanation:

Let s be the speed of boat in still water

Let d be the distance

Upstream speed = s-4

Jane took 30 min to drive her boat upstream to water-ski at her favorite spot.

So, Distance traveled in upstream =Speed \times time =(s-4) \times \frac{30}{60}

Downstream speed = s+4

So, Distance traveled in downstream = Speed \times time =(s+4) \times \frac{20}{60}

So, (s-4) \times \frac{30}{60}=(s+4) \times \frac{20}{60}

30s-120=20s+80

10s=200

s=20

Hence The speed of the boat is 20 km/hr

6 0
3 years ago
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