1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ella [17]
3 years ago
15

B. A teacher weighed 145 pounds in 1986 and weighs 187 pounds in 2007. What was the rate of change in

Mathematics
2 answers:
mariarad [96]3 years ago
8 0

Answer:

the teacher gained 42 pounds in 21 years . Each year the teacher gained 2 pounds.

Step-by-step explanation:

187-145=42

2007-1986=21

42 divided by 21 = 2

Svetradugi [14.3K]3 years ago
4 0

Answer:

2 pounds per year.

Step-by-step explanation:

2007-1986 = 21 yrs

187-145 = 42 pounds

42 pounds /21 yrs = 2 pounds /yr

You might be interested in
Find the value of x in the isosceles triangle shown below.
natima [27]

Answer:

Sorry,for the answer it is too difficult brother .

8 0
2 years ago
8 Select the correct answer from each drop-down menu. Some of the images in the diagram are images of polygon 1 from similarity
makkiz [27]

It should be noted that Polygon 3 and polygon 4 are similar to polygon 1.

<h3>What exactly is polygon?</h3>

In geometry, it should be noted that a polygon is a plane figure which is described by a finite number of straight line segments that are connected in order to form a closed polygonal chain.

In this case, the bounded plane region, the bounding circuit, may be called a polygon. Also, a similarity transformation is the conformal mapping whose transformation matrix are identical.

In this case, it should be noted that Polygon 3 and polygon 4 are similar to polygon 1.

Learn more about polygon on:

brainly.com/question/24966296

#SPJ1

8 0
2 years ago
HELPPPPPPP ASAP!!!!
Sergeeva-Olga [200]

Answer:  AB will be parallel to A'B'.


Step-by-step explanation: We know the definition of dilation about the centre. It is defined as the enlargement or shrinken of the original figure keeping the centre of dilation or the figure as fixed.

We are given ΔUVW  and AB is perpendicular to UW. Now, if we dilate the triangle about the origin, then the triangle will either enlarge or shrink keeping the centre fixed.

Let us consider the enlarged triangle, ΔU'V'W' as shown in the attached figure. Also, line AB will move to the new position A'B'. We can clearly see that both the lines are parallel to each other.

Thus, the line segments AB and A'B' will be parallel too each other.

5 0
3 years ago
Read 2 more answers
In a flight of 600 km, the speed of the aircraft was slowed down due to bad weather. The average speed of the trip was decreased
UkoKoshka [18]

The average speed would be 600 km/hr.

Step-by-step explanation:

Let the original speed be 'x'

Let the decreased speed be 'x-200'

Distance = 600 km

Time increased by 30 minutes

According to question, it becomes,

\dfrac{600}{x-200}-\dfrac{600}{x}=\dfrac{30}{60}\\\\\dfrac{x-(x-200)}{x^2-200x}=\dfrac{1}{2\times 600}\\\\\dfrac{200}{x^2-200x}=\dfrac{1}{1200}\\\\240000=x^2-200x\\\\x^2-200x-240000=0\\\\x=600,-400

So, The average speed would be 600 km/hr.

5 0
3 years ago
If 14 songs were 9.38 dollars how much would one be
zheka24 [161]

Answer:

each song would be 67 cents (0.67)

Step-by-step explanation:

9.38/14=0.67

5 0
2 years ago
Other questions:
  • The price of a pair of jeans was $60 after a 50% markup. What was the price of the jeans before the markup?
    8·2 answers
  • What is the purpose of Australians paying tax?
    15·2 answers
  • A batch of one hundred cars is inspected by testing four randomly selected cars. If one of the four is defective, the batch is r
    8·1 answer
  • Solve the system by the method of elimination.
    12·2 answers
  • Math is annoying! Can someone help me please?
    15·1 answer
  • Can you solve this I need help?
    8·2 answers
  • The value of k lies between 2.2 and 2.3.
    8·2 answers
  • Find the volume and the surface area of the shape
    8·1 answer
  • On a farm there was a cow. And on the farm there were 2 sheep. There were also 3 chickens. What is the total mass of the 1 cow,
    5·1 answer
  • Use the image below to answer the following question. Find the value of sin x° and cos y°. What relationship do the ratios of si
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!