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12345 [234]
3 years ago
7

Not sure how I can solve this problem or where to start. Please Help!

Mathematics
1 answer:
Artyom0805 [142]3 years ago
3 0

The triangle on the left side has two legs of length 4 m and 6 m. It's a right triangle, so the hypotenuse has length √((4 m)² + (6 m)²) = 2√13 m. Only the 4 m leg and the hypotenuse count towards the shape's overall perimeter.

The rectangular part contributes 9 m from the top side and 9 m from the bottom one, thus a total of 18 m.

The half-circle has diameter 6 m (indicated by the dashed line, same as the height of the triangle on the left). A full circle with diameter <em>d</em> has circumference <em>πd </em>; a half-circle with the same diameter would then contirubte <em>πd</em>/2, or in this case, 3<em>π</em> m.

So, the total perimeter of the shape is

(4 m + 2√13 m) + 18 m + 3<em>π</em> m ≈ 38.6 m

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A track team has 4 runners on a relay team. If by coincidence each runner takes an average of 45.48 seconds to complete her leg
musickatia [10]

Answer:

181.92 seconds

Step-by-step explanation:

We are given that,

Time taken by each person in the team = 45.48 seconds

Number of members in the team = 4

It is required to find the total time taken by the team to finish the race.

Thus, the time taken taken = 4 × 45.48 = 181.92 seconds

Hence. the team finished the race in 72.4 seconds.

6 0
3 years ago
Write the following as a mixed number.
Margaret [11]
1. Write the following as a mixed number. \frac{65}{18}
3\frac{11}{18}
<span>
2. </span>Write 2\frac{5}{7}<span> as an improper fraction
</span>\frac{18}{7}

3. <span>Perform the operation and write the answer in simplest form.
a)4/7*3/11= 12/77
b)6/10 / 12/7= 7/20
c)5 1/7*3 1/9= 16
d)6 3/7 / 1 13/14= 10/3

Hope this helps</span>
7 0
4 years ago
Read 2 more answers
El polinomio que se encuentra en orden descendiente es:
GalinKa [24]
D because I think it is Ddddd
6 0
3 years ago
Mrs. Owens was making Thanksgiving dinner for 10
saul85 [17]

Well if she is making dinner for 10 people and each person want 2 pieces then you need to multiple 10 x 2 = 20. So she is going to need to make 20 pieces.

If each of her pumpkin pies only has 8 pieces then she is going to have to make 3 pies.

3 pies x 8 pieces = 24 pieces of pumpkin pie. So she has to make 3 pies because she needs 20 pieces since everyone wants 2.

In conclusion Mrs. Owens has to make 3 pies and she is going to have 4 pieces left over.

7 0
4 years ago
the base length of a particular triangle is 4 inches mote than its height. it the area of the triangle is 10.5 square inches, fi
IRINA_888 [86]

Answer:

<u>Height = 3 inches and Base length = 7 inches</u>

Step-by-step explanation:

1. Information provided to answer the question correctly:

Base of the triangle = x+ 4

Height of the triangle = x

Area of the triangle = 10.5 inches²

2. Find the base length and height

Let's recall the formula of the area of a triangle:

Area = (Base * Height)/2

Replacing with the values we know:

10.5 = x (x + 4)/2

21 = x² + 4x

x² + 4x - 21 = 0

(x + 7) (x - 3) = 0

(x₁ + 7) = 0 ⇒ x₁ = -7

(x₂ - 3) = 0 ⇒ x₂ = 3

We take  x₂ as the answer because x₁ = -7 is not a valid height.

<u>Height = 3 inches and Base length = 7 inches</u>

3 0
4 years ago
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