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
Elan Coil [88]
3 years ago
11

For what value is a is (a,9) a solution of the equation y=2x+1

Mathematics
1 answer:
yanalaym [24]3 years ago
7 0

Answer:

a = 4

Step-by-step explanation:

y = 2x + 1 ......(1)

Going through y - y1 = m(x - x1)

m is slope and it is 2

y1 = 9 and x1 = a

y - 9 = 2(x - a)

y - 9 = 2x - 2a

y = 2x - 2a + 9 ........(2)

Equating (1) and (2)

2x + 1 = 2x - 2a + 9

Collecting like terms

2x - 2x + 2a = 9 - 1

2a = 8

a = 8/2

a = 4

You might be interested in
) 6. What is the volume of the composite figure
sattari [20]
1,468 sqft hope that’s right
6 0
3 years ago
Select the correct answer. Twenty students in Class A and 20 students in Class B were asked how many hours they took to prepare
Lunna [17]

Answer:

B: The mean study time of students in Class B is less than students in Class A.

Step-by-step explanation:

To find out why answer B is the right answer, I will give you facts from each option.

Option A is false. <em>The mean study time in Class A is 4.8. Meanwhile in Class B it is 4. For Class A, sum up the 20 study times which is 96 and divide them by 20, you will get 4.8 hours of mean study time. For Class B, the sum of the 20 study times is 80, which divided by 20 will be 4. </em>

Option B is True. <em>See previous explanation. </em>

Option C is False. <em>The median study time in Class B is 4. The median study time in Class A is 4.8, </em>

Option D is False. <em>The range in Class A is from 2 to 8. The range in Class B is from 2 to 7. </em>

Option E is False: <em>The mean and median study time of these classes is different.</em>

6 0
3 years ago
Read 2 more answers
1. Find the synonym in this sentence that hints at the meaning of the underlined word:
erik [133]

Answer:

Step-by-step explanation:
Surprise! It is the closest to the noun " astounded "

7 0
2 years ago
Read 2 more answers
A box contains 8 yellow, 3 orange and 5 purple candies. A tray contains 7 red, 4 blue and 9 orange drinks. If Asia chooses one c
gayaneshka [121]
Okay so we have to first find the total.
8+3+5= 16 candies
7+4+9= 20 drinks
Since she wants to get a yellow candy and any drink but orange, put that information as a fraction.
8/16= 50% or 1/2
11/20= 55% (By the way you get 11 because of the 7 red and 4 blue).
And that's your answer!
Hope this helped and good luck! ^=^
7 0
3 years ago
What is the sum of (2 + 6x) and (3 - x)?
Ahat [919]

Answer:

(2+6x)+(3-x)

5+5x is your answer

4 0
3 years ago
Other questions:
  • What basic trigonometric identity would you use to verify that sin^2x +cos^2x/cos x = sec x
    10·1 answer
  • I will give you a Brainly crown if it is right. Will you help me plzzzzzz helplpppppp
    13·2 answers
  • Calcule o determinate : <br><br> -3 2<br> 5 -3
    6·1 answer
  • One is the additive identify true or false
    6·1 answer
  • Help me plz help assao​
    11·1 answer
  • The total number of adults and students with Library cards in 27814. Of that total 11480 are student
    6·2 answers
  • How does one solve for the n+1st term with the nth term of a sequence
    7·2 answers
  • Help needed
    6·2 answers
  • What is the solution to ? ​
    13·1 answer
  • Gemma is solving a division problem. After writing the problem down, she moves the decimal point directly up to the quotient. Wh
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!