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
aleksley [76]
3 years ago
13

What number should be added to the expression x^2 + 2x to change it into a perfect square trinomial?

Mathematics
1 answer:
horrorfan [7]3 years ago
6 0
The\ perfect\ scuare:(a+b)^2=a^2+2ab+b^2\\------------------\\\\x^2+2x\to a=x;\ 2ab=2xb\to b=1\\\\therefore\\\\x^2+2x\cdot1+1^2=x^2+2x+\boxed{1}\leftarrow\boxed{A}
You might be interested in
Zack has an old car. He wants to sell it for 60% off the current price. The
Lelechka [254]

Answer:

300 dollars

Step-by-step explanation:

60% of 500

(60/100) * 500 = 300

4 0
3 years ago
One number is 9 more than 3 times another. If their difference is 29, what is the larger number?
vfiekz [6]

Answer:

39

Step-by-step explanation:

x-3y=9

x-y=29

subtract

-2y=-20

y=10

x-10=29

x=39

6 0
3 years ago
Read 2 more answers
Macy is tutoring students in mathematics during her summer break. She charges $20 for a 30 minute session and $35 for an hour. T
Zanzabum
If she only had 1 hour sessions she had 8 sessions in the first week because if you do 35 times 8 you get 280. 
7 0
3 years ago
Write a paragraph to help Miguel explain to Hannah how to complete the problems. Be sure to explain the process step-by-step (re
Eddi Din [679]
Steps in multiplying fractions. Remember: finding common denominator is not necessary in multiplying fractions. 
Common denominators are only needed in adding and subtracting fractions.

14/15 * 5/2 

Step 1. Multiply the numerators.
14 * 5 = 70
Step 2. Multiply the denominators
15 * 2 = 30
Step 3. Simplify the fraction.
70/30 = 2 10/30 = 2 1/3      

*the fraction 10/30 can still be simplified by dividing both numbers by 10. Hence, 1/3.

Steps in Dividing fractions.

24/60 ÷ 8/15

Step 1. Get the reciprocal of the 2nd fraction. Reciprocal means the reverse of the fraction. Simply swap the places of the numbers.

Reciprocal of 8/15 is 15/8.

Step 2. Multiply the 1st fraction to the reciprocal of the 2nd fraction. Follow steps in multiplying fractions.

24/60 * 15/8 = (24*15) / (60*8) = 360/480

Step 3. Simplify the fraction.
360/480 = 9 / 12 = 3/4

360 ÷ 40 =   9 ;   9 ÷ 3 = 3
480 ÷ 40 = 12 ; 12 ÷ 3 = 4
4 0
3 years ago
How much does 1 candy bar cost if 112 candy bars cost $78.00?
Alexxandr [17]
$0.70 per candy.
$78 divided by 112 gives $0.696, so by rounding off, you get 0.70
5 0
2 years ago
Other questions:
  • 2/4+5/6+7/2-1/2=¿¿¿¿
    9·1 answer
  • Guys i need help ASAP​
    6·1 answer
  • Sum of natural numbers between 10 and 100 and divisible by 4​
    14·1 answer
  • Alex is on a boat going to an island twelve miles away for a picnic. The way there, with the current, it takes her 3 hours while
    9·1 answer
  • This is a 30-60-90 triangle. what is the measure of X? please explain
    7·1 answer
  • Hello i would like help on this cause i’m not sure if i did it right
    10·1 answer
  • Do y’all know the answer to this math question?
    14·1 answer
  • URGENT: Solve 2p^2 -3p - 2 by factoring<br><br> Answers:<br> 1/2, 2<br> -2, 1/2<br> 1, 2<br> -1/2, 2
    5·1 answer
  • What’s you favorite subject? (Free 50 points!)
    7·2 answers
  • Help pls ...................................
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!