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nikklg [1K]
3 years ago
5

What number should be added to the expression x^2+4x to change it into a perfect square trinomial?

Mathematics
2 answers:
sleet_krkn [62]3 years ago
8 0
4

x^2+4x+4=(x+2)^2
lys-0071 [83]3 years ago
4 0
X² + 4x + 4 = (x+2)²

Answer is 4.

Hope it helps!
You might be interested in
A line with a slope of 3 passes through (2,5). Which choice is an equation of this line? Please help
jek_recluse [69]

Answer:

Top right.

Step-by-step explanation:

So we want a line with a slope of 3 and passes through (2,5).

To do so, we can use the point-slope form.

The point-slope form is:

y-y_1=m(x-x_1)

m is the slope and x₁ and y₁ is an ordered pair.

Thus, let m be 3, y₁ be 5, and x₁ be 2. Thus:

y-5=3(x-2)

Our answer is the top right :)

3 0
3 years ago
Read 2 more answers
Light travels at 2.998 x 10 miles per second. It takes
Olenka [21]

Answer: Coffiecent is 26

Step-by-step explanation

the travel from Sun to Jupiter  it will take more than 43 minutes . depending on whether are on the same side of the Sun as well as Jupiter  or on the other side

another point always sun and Jupiter are not nearest so only changes in the  light travels

4 0
3 years ago
What is the volume of this sphere?
Darina [25.2K]

Answer:

523.59 or 523.60

Step-by-step explanation:

Volume for a sphere: 4/3πr^3 (4÷3x π x r ^ 3)

(r is radius, V is volume)

V= 4/3 x π x r^3

The diameter is 10, so the radius is 5...

V= 4/3 x π x 5^3

V= 4/3 x π x 125

CALCULATER: 4 ÷ 3 x π x 125

Answer 523.59  (523.60 rounded)

6 0
3 years ago
Solve for n:<br> 3(2−8n)=3n+6<br><br> Select one:<br><br> -15<br><br> 5<br><br> -5<br><br> 0
Len [333]
N=0 bc you remove the parentheses, cancel the equal terms what would be 6 being cancel it would look like -24n=3n now and move the variable to the left collet like terms and then you will divide the sides. Your answer is 0
5 0
3 years ago
Enny White is shopping for CDs. She decides to purchase 3 movie soundtracks. The music store has 7 different movie soundtracks i
zubka84 [21]

Answer:

35\ ways

Step-by-step explanation:

we know that

<u><em>Combinations</em></u> are a way to calculate the total outcomes of an event where order of the outcomes does not matter.

To calculate combinations, we will use the formula

C(n,r)=\frac{n!}{r!(n-r)!}

where

n represents the total number of items

r represents the number of items being chosen at a time.

In this problem

n=7\\r=3

substitute

C(7,3)=\frac{7!}{3!(7-3)!}\\\\C(7,3)=\frac{7!}{3!(4)!}

simplify

C(7,3)=\frac{(7)(6)(5)4!}{3!(4)!}

C(7,3)=\frac{(7)(6)(5)}{3!}

C(7,3)=\frac{(7)(6)(5)}{(3)(2)(1)}

C(7,3)=35\ ways

6 0
3 years ago
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