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
olasank [31]
3 years ago
6

the linear equation y=2x represents the cost y of x pounds of pears. which order pair lies on the graph of the equation? A. (2,4

) B. (1,0) C.(10,5) D. (4,12)

Mathematics
1 answer:
Vladimir [108]3 years ago
4 0

Answer:

  A.  (2, 4)

Step-by-step explanation:

The ordered pairs represent (x, y). Since you have y =2x, this is the same as ...

  (x, 2x)

That is, the second number in the pair needs to be twice the first number in the pair. Since you know your times tables, you know that this is not the case for (1, 0), (10, 5) or (4, 12). Those values of x would give (1, 2), (10, 20), (4, 8).

It is the case that you have (x, 2x) for (2, 4).

The point (2, 4) lies on the graph of y = 2x.

You might be interested in
Answer please struggling
Julli [10]

Answer:

x ≈ 28.2

Step-by-step explanation:

Δ CAB ≅ Δ CDE then corresponding sides are in proportion, that is

\frac{CA}{CD} = \frac{CB}{CE} , substitute values

\frac{14+x}{x} = \frac{18.7+9.3}{18.7} = \frac{28}{18.7} ( cross- multiply )

28x = 18.7(14 + x) ← distribute

28x = 261.8 + 18.7x ( subtract 18.7x from both sides )

9.3x = 261.8 ( divide both sides by 9.3 )

x ≈ 28.2 (to the nearest tenth )

8 0
3 years ago
Mario and Bowser begin with a hat that has 5 balls in it: 3 are red, 2 are green. Bowser secretly picks a ball and tells Mario i
stiv31 [10]
1) probabillity of getting two red balls in a row is 1/2 (if 80% Bowser is lying)
2) <span>probability of getting 2 red balls in a row is 1/6 (20% Bowser's truth)
3)  overall probability </span>( \frac{4}{5} * \frac{1}{2}) + (\frac{1}{5} * \frac{1}{6}) = \frac{13}{30}
8 0
3 years ago
How to do substitution or elimination
Levart [38]
I: y=(1/2)x+5
II: y=(-3/2)x-7

substitution:
fancy word for insert the definition of one variable in one equation into the other
-> isolate a variable, luckily y is isolated (even in both equations) already
-> substitute y of II into I (=copy right side of II and replace y in I with it):

(-3/2)x-7=(1/2)x+5
-3x-14=x+10
-3x-24=x
-24=4x
-6=x

-> insert x back into I (or II):
y=(1/2)x+5
=(1/2)*(-6)+5
=-3+5=2

elimination: subtract one equation from the other to eliminate a variable, again y is already isolated->no extra work required

I-II:
y-y=(1/2)x+5-[(-3/2)x-7]
0=(1/2)x+5+(3/2)x+7
0=(4/2)x+12
-12=2x
-6=x

-> insert x back into I (or II):
y=(1/2)x+5
=(1/2)*(-6)+5
=-3+5=2
8 0
3 years ago
a rule for an example of a nonlinear function that fits the following description. when d is 4, r is 9, and r is a function of d
Anika [276]
Some possibilities:
r = (9√d)/2, so f(d) = <span>(9√d)/2
r = 9d^2/16, so f(d) = </span><span>9d^2/16</span>
r = 9(2^d)/16, so f(d) = 9(2^d)/16

These are examples of non-linear functions of d which fit the description. I think that is what you are asking, but comment if I'm wrong?



3 0
3 years ago
Y varies directly as x and inversely as the square root of w; write the sentence as an equation: ​
olasank [31]
Hope this helps gud luck

4 0
2 years ago
Other questions:
  • You want to create a 99% confidence interval with a margin of error of .5. Assuming the population standard deviation is equal t
    8·1 answer
  • The local animal shelter throws a dog-themed party. Humans, h, and dogs, d are both invited. The event space imposes two restric
    13·2 answers
  • Take-home pay or the amount of money remaining after deductions from a paycheck is called?? A. Gross income B. Deductibles C. Ne
    11·1 answer
  • Let's solve the equation for x! 3x-3=180 *
    11·2 answers
  • 5x+12=44 then value of 5x-12=?​
    7·1 answer
  • The Freedom Trail is 2 1/2 miles long. Ana walked 5/8 mile from Boston Common to the Paul Revere House. Then, she walked 3/8 mil
    6·1 answer
  • What is the least common denominator for the fractions 56and38?
    15·2 answers
  • A system of linear equations has been graphed in the diagram. Determine a reasonable solution for the system of
    12·1 answer
  • A 40 foot ladder is set against the side of a house so that it reaches up 24 feet. If Aiden grabs the ladder at its base and pul
    13·1 answer
  • ANSWER ASAP PLEASE!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!