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3 years ago

A line graph would be useful for:

Mathematics

2 answers:

svetlana [45]3 years ago

8 0

Tracking a change over time.

fenix001 [56]3 years ago

5 0

- - A line graph is used to keep ahold of something, and watch it change over time.

For example: Kelly ran 10 miles in 25 minutes

You can keep track of times and changes.

☆ Korey

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A rectangle is placed around a semicircle as shown below. The length of the rectangle is 14mm. Find the area of the shaded regio

Damm [24]

Image is missing, so i have attached it

Answer:

21.07 mm²

Step-by-step explanation:

We will use the Formulas:

Area of semicircle = πr²/2

Area_rectangle = Length x width = Lw

We are given:

Length of rectangle = 14 mm

From the attached image, the diameter of the semicircle is equal to the length of the rectangle.

Thus;

diameter of semicircle = length of rectangle

Therefore,

diameter of semicircle = 14 mm

Also, from the attached image, the radius of the semicircle is equal to the width of the rectangle.

Thus;

diameter of semicircle/2 = radius of semicircle

Hence;

radius of semicircle = 14/2 = 7mm = width of rectangle

Thus;

Area of rectangle = L*w = 14 × 7 = 98 mm²

Area of semicircle = πr²/2 = π×7²/2 = 76.93 mm²

To get the area of the shaded region, we will subtract area of the semi-circle from the area of the rectangle.

Area of shaded region = Area_rectangle - Area_semicircle = 98 - 76.93 = 21.07 mm²

7 0

2 years ago

A 1 =7 and a_n=a_{n-1}+4a n =a n−1 +4

user100 [1]

Answer:

dhhshdhhdjejxj

Step-by-step explanation:

potanginaaaa

3 0

2 years ago

In the past month, Eric rented 1 video game and 6 DVDs. The rental price for the video game was $2.20. The rental price for each

snow_lady [41]

The total amount of money Eric spent is $24.4 dollars! Hope this helps!

3 0

3 years ago

Read 2 more answers

What is the answer?

Rus_ich [418]

Part A

The 4 angles of a quadrilateral add to 360. To see why, draw a line from A to C. The quadrilateral is divided into 2 triangles. All triangles have interior angles that add to 180. Since there are 2 such triangles, the total is 2*180 = 360. Write a summation for the 4 angles.

2x + 3x + x + 90 = 360 Combine like terms on the left

6x + 90 = 360 Subtract 90 from both sides.

6x + 90 - 90 = 360 - 90 Collect like terms

6x = 270 Divide both sides by 6

6x/6 = 270/6 Do the division

x = 45

Part B

Since x = 45 then2x = 90

Since <A and <B = 90 And since they are equal interior angles and

both are 90 degrees,the lines are parallel.

7 0

3 years ago

: Find the area of the shaded region for these two questions. Remember this

xxMikexx [17]

Answer:

c) 18 cm²

d) 30 cm²

Step-by-step explanation:

You can do this 2 different ways. Either way, you need to use the bottom side of 8 cm and the two congruent segments. Each of the two congruent segments of the bottom side measures 4 cm.

Method 1) Find the area of the large triangle and subtract from it the area of the small triangle.

area of triangle = bh/2

shaded area = 8 cm × 6 cm / 2 - 4 cm × 3 cm / 2

shaded area = 24 cm² - 6 cm²

shaded area = 18 cm²

Method 2) The shaded region is a trapezoid with parallel bases of lengths 3 cm and 6 cm and height 4 cm. Find the area of the trapezoid.

area of trapezoid = (B + b)h/2

shaded area = (6 cm + 3 cm)(4 cm)/2

shaded area = (9 cm)(4 cm)/2

shaded area = 18 cm²

The area of the shaded region is the area of the white triangle subtracted from the area of the rectangle.

area of rectangle = length × width

area of triangle = bh/2

shaded area = (12 cm)(4 cm) - (9 cm)(4 cm)/2

shaded area = 48 cm² - 18 cm²

shaded area = 30 cm²

6 0

2 years ago