MATHEMATICS MIDDLE SCHOOL

What number should be added to the expression x^2 + 2x to change it into a perfect square trinomial?A) 1
B) 2
C) 3
D) 4

Answers

Answer 1
Answer: The\ perfect\ scuare:(a+b)^2=a^2+2ab+b^2\n------------------\n\nx^2+2x\to a=x;\ 2ab=2xb\to b=1\n\ntherefore\n\nx^2+2x\cdot1+1^2=x^2+2x+\boxed{1}\leftarrow\boxed{A}

Related Questions

How do simplifly? Plz help I don't know how
Park Rangers are counting the deer population in a state park. They divide the park into sections that are each 324 square feet. The width of each section is 12 feet. What is the perimeter of each section of the park?
The histogram shows the number of miles walked one weekend by people in a hiking club. Which statement is best supported by this histogram?A.Three people walked 7 miles.B.Everyone walked at least 2 miles.C.Between 6 and 8 people walked 3 miles.D.Seven people walked at least 3 miles.
Find two possible factor for the estimated product of 2800
What is the prime factorization of 65​

What is a commutative property of multiplication?

Answers

It means the same as it sounds like. It means that it joins others .

How do you find the volume of a cube?

Answers

v equals a to the power 3

        3
v = a 

students are selling tickets to a scool fundraiser for every 15 tickets a student sells a student earns a T-shirt as a reward what are the indendent and dependet variable

Answers

y=dependent variable
x=independent variable.

y=number of T-shirt
x=number of tickets.

The function would be:
y=x/15

Therefore:
T-shirt= dependent variable.
tickets=independent variable.

39 is 150% of what number plz show work

Answers

Okay 39 is 150% of what number? so like remember whenever you see percent you have to divide by 100
so let's start
First. we have 150% so let's divide 150%/100=1.5

Second. you will multiply 1.5*39= 26% 

and you can also do it like easy way.

39/150=0.26
0.26/100=26

39 is 26% of 150

hope i help :p
39 is 26% of 150


100%/x%=150/39
(100/x)*x=(150/39)*x
100=3.84615384615*x
(3.84615384615) to get x
100/3.84615384615=x
26=x
x=26

5 times 7/8 then converted to simplest form?

Answers

5*7/8 = 4 3/8
5/1 * 7/8 = 35/8
convert into mixed number because numerator is bigger than the denominator so it it
4 3/8

The pitchers mound in baseball is 85m from the plate. It takes 4 seconds for a pitch to reach the plate. How fast is the pitch?

Answers

speed = distance / time

85m/ 4s = 21.25 m/s
Other Questions
a box of marbles can be shared equally among 6,7,or 8 students with 4 marbles left over each time.what is the least possible number of marbles In the box?
Point A on a number line is 12 units to the left of 0. Point B is 9 units to the right of zero. What is the distance between Point A and Point B?A) -21 units B) -3 units C) 3 units D) 21 units
Can yall help me with number 10.....the graph counts too....oops i put math i meant to put science
9.72 / 7 ? then round to the nearest cent