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
Alina [70]
3 years ago
11

Evaluate 15r+6 (60-r)for r =20,30 and 40. what conclusion can you draw

Mathematics
1 answer:
7nadin3 [17]3 years ago
6 0

15 (20)+6(60-20)= 240

15 (30)+6(60-30)=630

15(40)+6(60-40)=720


you can conclude that none of the numbers have anything in common except that they all end in a 0

You might be interested in
Use a Venn diagram to answer the question. A survey of 180 families showed that 67 had a​ dog; 52 had a​ cat; 22 had a dog and a
Mice21 [21]

Answer:

There are 13 families had a parakeet only

Step-by-step explanation:

* Lets explain the problem

- There are 180 families

- 67 families had a dog

- 52 families had a cat

- 22 families had a dog and a cat

- 70 had neither a cat nor a​ dog, and in addition did not have a​

 parakeet

- 4 had a​ cat, a​ dog, and a parakeet (4 is a part of 22 and 22 is a part

 of 67 and 520

* We will explain the Venn-diagram

- A rectangle represent the total of the families

- Three intersected circles:

 C represented the cat

 D represented the dog

 P represented the parakeet

- The common part of the three circle had 4 families

- The common part between the circle of the cat and the circle of the

 dog only had 22 - 4 = 18 families

- The common part between the circle of the dog and the circle of the

 parakeet only had a families

- The common part between the circle of the cat and the circle of the

 parakeet only had b families

- The non-intersected part of the circle of the dog had 67 - 22 - a =

  45 - a families

  had dogs only

- The non-intersected part of the circle of the cat had 52 - 22 - b =  

  30 - b families

  had cats only

- The non-intersected part of the circle of the parakeet had c families

  had parakeets only

- The part out side the circles and inside the triangle has 70 families

- Look to the attached graph for more under stand

∵ The total of the families is 180

∴ The sum of all steps above is 180

∴ 45 - a + 18 + 4 + 30 - b + b + c + a + 70 = 180 ⇒ simplify

- (-a) will cancel (a) and (-b) will cancel (b)

∴ (45 + 18 + 4 + 30 + 70) + (-a + a) + (-b + b) + c = 180

∴ 167 + c = 180 ⇒ subtract 167 from both sides

∴ c = 180 - 167 = 13 families

* There are 13 families had a parakeet only

5 0
3 years ago
PLEASE HELP ME ON THIS!!!!!!!ASAP!!!!!!!!!!!!!!!!!!
NemiM [27]

Answer:

B is the right answer

Step-by-step explanation:

because of negative 7 on the right it shows that it is down 7

8 0
3 years ago
Indicate whether the lines are parallel, perpendicular, or neither.
Diano4ka-milaya [45]

Answer:

Perpendicular

Step-by-step explanation:

6 0
3 years ago
Yoko runs10 miles in75 minutes. At the same rate, how many miles would she run in 69 minutes?
Ostrovityanka [42]
She would run 9.2 miles.
3 0
3 years ago
Read 2 more answers
How are percents greater than 100 used in real world contexts
Paul [167]
Used show you have more than what is needed. Example is you need 6 slices of pizza for all your friends but have 7 slices you have more than is needed.
3 0
3 years ago
Other questions:
  • What is the product of the rational expressions shown below? Make sure your
    14·1 answer
  • Inez has 2 1/4 pounds of potatoes for the picnic, she needs 8 1/2 pounds of potatoe. How many more pounds of potatoes does Inez
    14·1 answer
  • A technology manufacturer is a supplier of fiber optic cables. They are interested in expanding their business and offering fibe
    13·1 answer
  • Is the decimal form of 13/3 a rational number
    13·1 answer
  • Expanded form for 208,000,478​
    5·2 answers
  • What is the solution to this question b-1= 1+b
    15·1 answer
  • Uhh pls help I got 3 mins left
    7·1 answer
  • PLEASE HELPPP ILL GIVE BRAINLIESTTTT!!!!
    7·1 answer
  • Which equation represents the line through (0,0) and (3,4)? a. y=3/4x b.y=4/3x c.y=4x d.y=3x
    14·1 answer
  • What is a polygonal curve
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!