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
enot [183]
3 years ago
6

The expression 2x² + ax is equivalent to x (2x + 7) for some constant a. What is the value of a ?

Mathematics
1 answer:
NNADVOKAT [17]3 years ago
7 0
2x^2 + ax = x(2x+ 7)
2x^2 + ax = 2x^2 + 7x
Subtract 2x^2 from both sides
ax = 7x
a = 7
You might be interested in
The higher interest rate of a cash advance on a credit card with an existing balance can be eliminated by paying the cash advanc
finlep [7]

The answer is False.

8 0
3 years ago
Read 2 more answers
Help me please on number 1......
dangina [55]
849-1.5=847.5
6.8-4.8=2

847.5 divided by 2 =423.75
8 0
3 years ago
Which of the following values would complete the ordered pair if the point is on the graph of f (x) = -3x + 2 ?
Scrat [10]

Answer: the y-coordinate that completes the point is 5.


Explanation:


An ordered pair (x, y) indicates the x-and-y coordinates of a general point, where x is the input value of a function and y is the output value.


The output value is y = f(x) and must be found applying the rule (function) to the given input value.


In this case the rulte is f(x) = - 3x + 2, and the input value, x,  is - 1 (the first value of the ordered pair).


This is the mathematical procedure:

  • x = - 1
  • f(x) = f (-1) = -3 (-1) + 2 = 3 + 2 = 5.
5 0
3 years ago
Read 2 more answers
We have an urn with 3 green and 4 yellow balls. We choose 2 balls randomly without replacement. Let A be the event that we have
Nana76 [90]

Answer:

Step-by-step explanation:

Urn has 3 green and 4 yellow

we choose 2 balls randomly

so samples  space for this selection is

\left [ \left ( Y,G\right ),\left ( G,Y\right ),\left ( G,G\right ),\left ( Y,Y\right )\right ]

Event A is choosing differently colored ball form sample space

P(A)=Probability of event (G,Y)+Probability of event (Y,G)

=\frac{^3C_1\times ^4C_1}{7\times 6}+\frac{^4C_1\times ^3C_1}{7\times 6}

=\frac{4}{7}

5 0
3 years ago
URGENT! PLEASE ANSWER IF YOU ACTUALLY KNOW THE ANSWER!
Pie

Using translation concepts, the coordinates that will best represent point E′ are given by:

D. (11, 1).

<h3>What is a translation?</h3>

A translation is represented by a change in the function graph, according to operations such as multiplication or sum/subtraction in it's definition.

In this problem, the rule to find the image of a point (x,y) is given by:

(x, y) → (x + 8, y + 5).

Then, the rule to find the image E' of point E(3,-4) is given by:

(3,4 -> (3 + 8, -4 + 5) = (11,1).

Hence option D is correct.

More can be learned about translation concepts at brainly.com/question/4521517

#SPJ1

3 0
2 years ago
Other questions:
  • 5 over 9p equals - 10 what is p
    15·1 answer
  • write an equation in point-slope form of the line having the given slope that contains the given point. m=−0.8, (14.5,12.8) sele
    11·2 answers
  • Assume that the samples are independent and that they have been randomly selected. A marketing survey involves product recogniti
    5·1 answer
  • The domain of a quadratic function is all real numbers and the range is y ≤ 2 how many x intercepts does the function have?
    6·2 answers
  • 3. Serena is the manager of the coffee shop. The amount of money she earns is represented by the equation = 21ℎ, where ℎ is the
    15·2 answers
  • The final grade in an algebra course is based on a weighted average - homework counts 10%, quizzes count 15%, tests count 50%, a
    13·2 answers
  • What is the volume of a cone with the given dimensions? Radius = 7 cm.; Height = 11 cm
    5·2 answers
  • Please help me with this question!!!
    12·1 answer
  • 6 1/2 divided by 3/4 in simplest form
    12·1 answer
  • Graph a sine function whose amplitude is 5, period is 6π , midline is y=−2, and y-intercept is (0,−2). The graph is not a reflec
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!