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gayaneshka [121]
3 years ago
9

Need help with this question 15 (1 1/5)

Mathematics
1 answer:
lana [24]3 years ago
6 0
15\left(1\dfrac{1}{5}\right)=15\cdot\dfrac{1\cdot5+1}{5}=15\cdot\dfrac{6}{5}\\\\=3\cdot6=\boxed{18}
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Find the total number of diagonals in a regular nonagon.
anastassius [24]

Answer:

7

Step-by-step explanation:

number of diagonals in a regular polygon = number of sides - 2.

A nonagon is a polygon having 9 sides.

Total number of diagonals in a regular nonagon

= 9 - 2

= 7

3 0
2 years ago
What is the perimeter of triangle ABC ?
blagie [28]

Answer:

9+\sqrt{41}

Step-by-step explanation:

From C-A, it goes from y=1 to y=5, so that 4 units

From A-B, it goes from x = -1 to x = 4, that is 5 units

Now, to find distance from B to C, we need to use the distance formula:

D=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}

Where the variables are the respective points of B and C,

B (4,5) & C(-1,1)

So x_1 =4, y_1=5, x_2=-1, y_2=1

Plugging into the formula we get:

D=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}\\D=\sqrt{(1-5)^2+(-1-4)^2}\\D=\sqrt{16+25}\\ D=\sqrt{41}

Summing it all (perimeter is sum of 3 sides):

Distance = 4+5+\sqrt{41}\\ =9+\sqrt{41}

3rd answer choice is right.

3 0
3 years ago
Find the percent decrease. Round to the nearest hundredth.: From 248 workers to 200 workers
Mrac [35]
The percentile decrease is 81%. 200 is 81% of 248 :3
3 0
3 years ago
Read 2 more answers
CLICK HERE
Sladkaya [172]

Answer:

Triangle

Solve for area

A=<u>hb</u><u>b </u>

     2

Step-by-step explanation:

Hope this helps^v^

5 0
3 years ago
Read 2 more answers
What is the perimeter of the equilateral triangle if one side is 15 ft?
vladimir2022 [97]
The equilateral triangle is 45 feet.
3 0
2 years ago
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