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
Verdich [7]
3 years ago
7

If a(x + 1) + b(x − 1) − 2 = 0 for all real x, then a =

Mathematics
1 answer:
jek_recluse [69]3 years ago
7 0

Answer:

D) 1

Step-by-step explanation:

using the distributive property we have ax+a+bx-b-2=0. because the equation is true for all real x, ax=-bx. this means a-b-2=0 and a=-b. a-b-2=0 becomes a=b+2. then we substitute a for -b and get -b=b+2 which becomes 2b=-2 so b=-1. since a=-b, a=1

You might be interested in
Given the function: f(x) = 2x3 - 3/2x, find f(-4).
Sergeu [11.5K]

Answer:

D) -122

Step-by-step explanation:

Given:

f(x) = 2x^3-\frac{3}2x

We need to find f(-4).

Now by substituting the value of x =-4 in above equation we get;

f(-4)= 2\times(-4)^3-\frac{3}{2}\times(-4)\\

By using PEDMAS we will solve for exponential function first we get;

Now we know that (-4)^3=-64

So we get;

f(-4)= 2\times(-64)-\frac{3}{2}\times(-4)\\

Now using PEDMAS we will solve division.

f(-4)= 2\times(-64)-1.5\times(-4)

Now using PEDMAS we solve multiplication.

f(-4)= -128+6

Finally by subtraction we get;

f(-4)= -122

5 0
3 years ago
Complete the point slope equation of the line through (-5,7) and (-4,0)<br><br>y-7=
deff fn [24]
Point slope form: y-7= -7(x+5)
3 0
3 years ago
Read 2 more answers
36 to the power -1/2
IRISSAK [1]
0.166667
it was rounded
6 0
3 years ago
A biker’s speed is 1.5 times faster than a walker’s speed. They start moving simultaneously in the same direction from the same
worty [1.4K]
Let the walker’s speed be W, then the biker’s is W+1.5W=2.5W. Difference in speed is 1.5W. Distance=speed times time, so 12.5=1.5W×1.5=2.25W, and W=12.5/2.25=1250/225=50/9=5.56 mph. The biker’s speed is 2.5W=125/9=13.89 mph to 2 Dec places.
(Note: “1.5 times faster than a walker’s speed” could not reasonably mean the biker’s speed=1.5W because this would give W=16.67 mph, which is very fast for a runner, let alone a walker (!), and a biker’s speed of 25mph.)
5 0
3 years ago
Read 2 more answers
What are the coordinates of the image of AABC after a dilation with center (0, 0) and a scale factor of ? Drag numbers to comple
Anettt [7]

Answer:

munbers may be used once Or more than once

3 0
3 years ago
Other questions:
  • If the measure of a tangent-chord angle is 74, then what is the measure of the intercepted arc inside the angle
    7·2 answers
  • What is the steps to solve 25 milligrams per day for one week
    10·1 answer
  • If -11 + N = -11, then N is the _____.
    8·2 answers
  • Defferentiate y=x⁴ with respect to x​
    14·2 answers
  • How long will it take for the money in an account that is compounded continuously at 4% interest to sextuple.
    12·1 answer
  • Help plz no wrong answers plz help me ASAP thanks!
    7·1 answer
  • The sum of 10 and Hector's age is 69 . Use the variable H to represent Hector's age.
    5·1 answer
  • Can someone help me pleaseee. Alguien podría ayudarme porfavor
    11·1 answer
  • Sasha's bank account earns 4% simple interest. How much must she deposit in the account today if she wants it to be worth $1,000
    6·1 answer
  • the width of a rectangle is 9 inches less than its length and the area is 36 square inches. what are the length and width of the
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!