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AlladinOne [14]
3 years ago
15

What is the area of the trapezoid?

Mathematics
1 answer:
Akimi4 [234]3 years ago
4 0

Answer:

264 cm^2.

Step-by-step explanation:

The area = 1/2 * height * sum of the parallel sides

= 1/2 * 12 * (28 + 16)

= 6 * 44

= 264 cm^2.

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The figure is made up of two shapes, a semicircle and a rectangle.
Kazeer [188]
Perimeter of quadrilateral +perimeter of curved shape=26+4pi

5 0
3 years ago
Read 2 more answers
Stanley practices his running, swimming and biking every day. During these practices he runs at 9 mph, bikes at 16 mph and swims
Ilya [14]

Answer:

(a) Stanley's running time was 0.5 + t

(b) Stanley biked for = 1 + 2·t hours

(c) The distance Stanley covered while swimming = 2.5 miles

(d) The distance Stanley covered while running = 13.5 miles

(e) The distance Stanley covered while biking = 48 miles

(f) Total distance Stanley covered during practice in terms of t = 43.5·t + 20.5

(g) The equation for finding the practice time is 64 = 43.5·t + 20.5

(h) Stanley swam, ran and biked for a total time of 5.5 hours

Step-by-step explanation:

The speed with which Stanley runs = 9 mph

The speed with which Stanley bikes = 16 mph

The speed with which Stanley swims = 2.5 mph

The time Stanley (he) spent running = 30 minutes + The time he spent swimming

The time Stanley (he) spent biking  = 2 × The time The time (he) spent running

Let the time Stanley spent swimming = t in hours

(a) The time he spent running = 30 minutes + t = 0.5 + t

The time he spent running = 0.5 + t

Stanley's running time was 0.5 + t

(b) The time Stanley spent biking  = 2 × (30 minutes + t) = 2 × (0.5 + t)

The time Stanley spent biking  = 2 × (0.5 + t) = 1 + 2·t

The time Stanley spent biking  = 1 + 2·t

Stanley biked for = 1 + 2·t hours

Therefore, given that distance = Speed × Time, we have

t × 2.5 + 9×(0.5 + t) + 16 × (2 × (0.5 + t)) = 64

2.5·t + 4.5 + 9·S + 32·t + 16 = 64

43.5·t + 20.5 = 64

43.5·t = 64 - 20.5 = 43.5

43.5·t = 43.5

t = 43.5/43.5 = 1

t = 1 hour

The time Stanley spent swimming = t = 1 hour

The time he spent running = 0.5 + t = 0.5 + 1.5 = 1.5

The time Stanley spent running = 1.5 hours

The time Stanley spent biking  = 2 × (0.5 + t) = 2 × (0.5 + 1) = 2 × 1.5 = 3

The time Stanley spent biking  = 3 hours

(c) The distance Stanley covered while swimming = Stanley's swimming speed × The time Stanley spent swimming

∴ The distance Stanley covered while swimming = 2.5 mph × 1 hour = 2.5 miles

The distance Stanley covered while swimming = 2.5 miles

(d) The distance Stanley covered while running = Stanley's running speed × The time Stanley spent running

The distance Stanley covered while running = 9 mph × 1.5 hours = 13.5 miles

The distance Stanley covered while running = 13.5 miles

(e) The distance Stanley covered while biking = Stanley's biking speed × The time Stanley spent biking

The distance Stanley covered while biking = 16 mph × 3 hours =  48 miles

The distance Stanley covered while biking = 48 miles

(f) The total distance Stanley covered during practice in terms of t is given as follows;

Given that distance = Speed × Time, we have

Total distance = t × 2.5 + 9×(0.5 + t) + 16 × (2 × (0.5 + t))

Total distance =2.5·t + 4.5 + 9·S + 32·t + 16

Total distance Stanley covered during practice in terms of t = 43.5·t + 20.5

(g) The equation for finding the practice time is given as follows;

Total distance Stanley covered during practice = 64 = 43.5·t + 20.5

∴ The equation for finding the practice time is 64 = 43.5·t + 20.5

(h) Stanley swam, ran and biked for a total time, t_{(tot)}, given as follows;

t_{(tot)} = The time Stanley spent swimming + The time Stanley spent running + The time Stanley spent biking

∴ t_{(tot)} = 1 + 1.5 + 3 = 5.5 hours.

7 0
3 years ago
What is the product? (4y - 3) (2y^2 +3y - 5)
igomit [66]

(4y-3)(2y²+3y-5)

First , let's start with "4y"

4y*2y² = 8y³

4y*3y =  12y²

4y*-5 = -20y

Next, let's multiply by "-3"

-3*2y² = -6y²

-3*3y = -9y

-3*-5 = 15

Now, let's combine all of our values.

8y³+12y²-6y²-20y-9y+15 = 8y³+6y²-29y+15

8 0
3 years ago
If a triangle is an equilateral triangle, then the triangle has exactly three 60°
ahrayia [7]

Step-by-step explanation:

In an equilateral triangle, all the three sides are equal as well as all the angles are equal. Let the angles be x.

We know that the sum of angles of a triangle is equal to 180 degrees. It means that,

x+x+x=180

3x=180

x=60°

Hence, if a triangle is an equilateral triangle, then the triangle has exactly three 60°  angles. Hence, △ABC is an equilateral triangle

3 0
3 years ago
Ms. Ramo's thumb measures 4 cm. Express this length in meters
Natalija [7]

Answer: 0.04 meters

Step-by-step explanation:

Convert cm to meters by dividing the length by 100.

4/100= = 0.04

6 0
3 years ago
Read 2 more answers
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