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
a_sh-v [17]
2 years ago
12

nolan is taking a multiple choice test his grade is given by the equation y=70-2x where y represents his final score and x repre

sents the number of questions he got wrong . waht could the number 70 represents in the equation? ​
Mathematics
1 answer:
Fynjy0 [20]2 years ago
7 0

Answer:

70 could represent the total number of points nolan can earn on the test

Step-by-step explanation:

You might be interested in
Question 16 of 22What is the product of (2x+3x - 1) and (3x+5)?A. 6x3 +19x2 +12x-5B. 6x3 + 10x2 +15x-5C. 6x3 +9x? - 3x-5D. 6x3 +
In-s [12.5K]

Given: (2x+3x - 1) and (3x+5)

The product of them will be as follows:

undefined

8 0
1 year ago
How much water should be added to 14mL of 15% alcohol solution to reduce the concentration to 7%
leonid [27]
You would need 12ml of water.

6 0
3 years ago
Ken drew a pair of intersecting rays and marked the angle between them. . . Which of these statements best compares the pair of
ANEK [815]
Ken drew a pair of intersecting rays and marked the angle between them. . . Which of these statements best compares the pair of intersecting rays with the<span>angle</span> I'd say c because the common endpoint is the intersection. 
4 0
3 years ago
Please answer this simple question!!!
vladimir1956 [14]
Just substitute the value of x from equation 2 in equation 1, 
6y = x - 12
6y = 22 - 12
y= 10/6
y = 5/3

In short, Your Answer would be Option Option B) (22, 5/3)

Hope this helps!
6 0
3 years ago
Urgent!
boyakko [2]

Step-by-step explanation:

18.

the last one.

-4.9t² + 24.5t + 117.6 = 0

the ball starts at 117.6 meters height. then, during the first seconds the thrust upwards is adding height, until finally, with more and more seconds passing, gravity will win with a vengeance and pulls the ball down faster and faster than any other force in any other direction.

19.

the general solution for a quadratic equation

y = ax² + bx + c

is

x = (-b ± sqrt(b² - 4ac))/(2a)

in our case

x = t

a = -4.9

b = 24.5

c = 117.6

t = (-24.5 ± sqrt(600.25 - -4×4.9×117.6))/-9.8 =

= (-24.5 ± sqrt(600.25 + 2304.96))/-9.8 =

= (-24.5 ± sqrt(2905.21))/-9.8 = (-24.5 ± 53.9)/-9.8

t1 = (-24.5 + 53.9)/-9.8 = -3

t2 = (-24.5 - 53.9)/-9.8 = 8

a negative time does not make any sense, so the real solution is : the ball reached the ground after 8 seconds.

20.

now the equation is

-4.9t² + 24.5t + 117.6 = 49

but this is quickly transformed again into a "= 0" equation :

-4.9t² + 24.5t + 68.6 = 0

t = (-24.5 ± sqrt(600.25 - -4×4.9×68.6))/-9.8 =

= (-24.5 ± sqrt(600.25 + 1344.56))/-9.8 =

= (-24.5 ± sqrt(1944.81))/-9.8 = (-24.5 ± 44.1)/-9.8

t1 = (-24.5 + 44.1)/-9.8 = -2

t2 = (-24.5 - 44.1)/-9.8 = 7

again, negative time does not make sense.

the ball will be at 49 m height after 7 seconds.

5 0
2 years ago
Other questions:
  • Grantsville Copper Mines employs 1,400 workers. The company must lay off 5% of its work force immediately and another 20% of the
    13·1 answer
  • Is the function cot t positive or negative in Quadrant II?
    15·2 answers
  • Brainly for step by step correct answer ❤️
    7·1 answer
  • Which of the following is true about the quotient below?
    11·2 answers
  • A theater company charges $4.50 per ticket for people of all age groups. if c represents the total number of children who bought
    11·1 answer
  • Sarah wants to buy a drone that is 65% off. The original price is $71.80. What is the sales price(nearest penny)?
    14·2 answers
  • Michelle deposits $250 in an account that earns 4% annual interest, what will be her balance after 3 years (when compounded mont
    14·1 answer
  • Brainly should really make add a feature where people can delete their posts and comments. They should also add a feature where
    15·2 answers
  • For any three dimensional figure the sum of the areas of all its faces is its
    11·1 answer
  • How are angles used in daily life?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!