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Drupady [299]
3 years ago
14

A rectangular fish tank has a base that is 9 inches

Mathematics
1 answer:
vivado [14]3 years ago
4 0

Answer:

I will answer when i get back

Step-by-step explanation:

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3. The figure below is a composite shape that consists of a semicircle and an equilateral triangle (triangle
Ivenika [448]

Answer:

See explanation below

Step-by-step explanation:

Area = Area of triangle + Area of the semi circle

Area of triangle = 1/2bh

Area of triangle = 1/2 *(5/2)(4)

Area of triangle = 1/2(2.5)*4

Area of triangle = 2 * 2.5

Area of triangle = 5cm^2

Area of semicircle = πr²/2

r = 2.5cm

Area of semicircle =(3.14)(2.5)²/2

Area of semicircle = = 3.14 * 4.5

Area of semicircle = 9.8125cm^2

Area pf the figure = 5+9.8125

Area pf the figure = 14.8125cm^2

For the perimeter

Perimeter of the semicircle = 2πr

Perimeter of the semicircle = 2(3.14)(2.5)

Perimeter of the semicircle = 15.7cm

Perimeter of the semicircle = = 15.7 + 5 + 5

Perimeter of the semicircle = 25.7cm

8 0
3 years ago
The equation sin(40o) = can be used to determine the length of line segment AC. What is the length of ? Round to the nearest ten
I am Lyosha [343]
The answer:
For more explanation please look at the image.
according to the image, the length of line segment AC can be found as
the following method shows:

<span>sin(40°)= opposite side  / hypotenuse,  opposite side = b, hypotenuse = AB= 20cm
</span>sin(40°)= b / 20 and this applies, b = 20 x sin(40°) = 0.64*20 = 12.85 cm
AC= 12.85 cm

 

8 0
3 years ago
Read 2 more answers
Select the correct answer. The Red Sea is widening at a rate of 1.25 centimeters per year. How many years will it take to widen
tangare [24]

Answer:

650

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Margie is practicing for an upcoming tennis tournament. Her first serve is good 20 out of 30 times on average. Margie wants to k
mojhsa [17]

Answer:

0.6804

Step-by-step explanation:

Given that Margie is practicing for an upcoming tennis tournament. Her first serve is good 20 out of 30 times on average.

Since each trial is independent and there are two outcomes, X no of good serves is binomial with n=6 and p =2/3

Required probability

= Prob that atleast four of 6 times good serve

=P(X\geq 4)

=P(x=4,5 or 6)\\=1-F(3)\\=0.6804

Formula used:

P(X=r) =6Cr (\frac{2}{3}^r )(\frac{1}{3}^{6-r}  )

7 0
3 years ago
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5. A bag contains 5 blue marbles, 4 yellow marbles and 1 red marble. What 1 point
Reptile [31]

Answer:

()

Step-by-step explanation:

Use nCr to figure this out, plug in the numbers and probabilities and solve

5 0
2 years ago
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