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2 years ago

Please help me quickly, the first person who answers gets brainlest

Mathematics

2 answers:

Vladimir [108]2 years ago

7 0

Answer:

(4x+3)^2

Step-by-step explanation:

To figure out if you chose the correct answer, work backwards. Take (16x + 3)(x+3) and distribute everything in.

Make arrows from the 16x to both parts in the second half. Then make arrows from the 3 to both parts of the second parenthesis. You now have to multiply these arrows. (This part is for visual learners.)

So, 16x * x + 16x * 3 + 3 * x + 3 * 3 =

16x(^2) + 48x + 3x + 9

This answer would give you 16x (^2) +51x + 9.

So, that answer is not correct.

Let's test the other two, as well.

(4x + 3)(4x - 3)

4x * 4x + 4x * -3 + 3 * 4x + 3 * -3 =

16x(^2) + -12x + 12x + -9 =

Combine like terms:

16x(^2) + -12x + 12x + -9 =

the -12x + 12x give you 0. That leaves you with 16x(^2) -9. So, that's not the answer.

Let's test the last one.

(4x+3)^2

If you write this out, you will have (4x+3)(4x+3).

Let's solve this.

4x * 4x + 4x * 3 + 3 * 4x + 3 * 3 =

16x(^2) + 12x + 12x + 9 =

Combine like terms:

16x(^2) + 12x + 12x + 9 =

16x(^2) + 24x + 9

That is the answer we need!

goldenfox [79]2 years ago

6 0

16x^2+24x+9

Rewrite 16x^2+24x+9 as(4x)^2+2*4x*3+3^2

=(4x)^2+2*4x*3+3^2

Apply perfect square formula: (a+b)^2=a^2+2ab+b^2

a=4x b=3

Your answer is (4x+3)^2

Im postive about this you will get it right i promise

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Describe 2 real world situation that could be modeled by a quadratic function

Naya [18.7K]

Solution:

1. Consider two trees which are 5 m apart. Suppose one tree is located at a distance of 45 m from my house and another tree is located 50 m from my house. Represent , distance of two trees from my house in terms of Quadratic function.

Solution:

Let location of my house when map of planet earth is drawn or on globe=x

⇒(x-45)(x-50)=0

⇒ x² - 45 x - 50 x +45 × 50 =0

⇒ x² - 95 x + 2250=0

2. Suppose age of me and my brother is 6 and 10 years. The Product of difference between age of me and my mother who is x years old and my brother and mother is 780.Find my mother's age.

Solution: Age of my mother = x years

→(x-6) × (x-10)= 780,

if you will solve it , the value of x= 36 years

5 0

3 years ago

Leon started to try to transform the expressions 6g + (g + 2) + 3 to determine if it is equivalent to the expression 6 + 7g. His

hodyreva [135]

By using the associative property [(5*3)*12] is equal to
[5*(3*12)] .
Option (A) is correct .
Step-by-step explanation:
Definition of associative property of multiplication
Let us assume that x , y and z be the three real numbers .
x × (y × z ) = (x × y) × z
This is called the associative property .
As given the expression be as follow
= [(5*3)*12]
Here
x = 5 , y = 3 , z = 12
By using the associative property
[(5*3)*12] = [5*(3*12)]
Therefore by using the associative property [(5*3)*12] is equal to
[5*(3*12)] .

Read more on Brainly.com - brainly.com/question/3604873#readmore

7 0

2 years ago

Read 2 more answers

Find the square root of 64a^2/9b^2+4+32a/3b

insens350 [35]

Answer:

the square root of 64a^2/9b^2+4+32a/3b is

( 8a + 6b ) / 3b

8a / 3b + 2

8 0

2 years ago

-x+4= 2x+1 equation steps

kykrilka [37]

-x + 4 = 2x + 1

add x to both sides

4 = 3x + 1

subtract 1 from both sides

3 = 3x

dived 3 from both sides

1 = x

4 0

2 years ago

Read 2 more answers

Assignment The operation teeter is defined on the set T= { 2, 3, 5, 7 } by x teeter y=[x+y+xy) mod.8 a - Construct mod.8 table f

rosijanka [135]

Answer:

Case A) tau_net = -243.36 N m, case B) tau_net = 783.36 N / m, tau_net = -63.36 N m, case C) tau _net = - 963.36 N m,

Explanation:

For this exercise we use Newton's relation for rotation

Σ τ = I α

In this exercise the mass of the child is m = 28.8, assuming x = 1.5 m, the force applied by the man is F = 180N

we will assume that the counterclockwise turns are positive.

case a

tau_net = m g x - F x2

tau_nett = -28.8 9.8 1.5 + 180 1

tau_net = -243.36 N m

in this case the man's force is downward and the system rotates clockwise

case b

2 force clockwise, the direction of

the force is up

tau_nett = -28.8 9.8 1.5 - 180 2

tau_net = 783.36 N / m

in case the force is applied upwards

3) counterclockwise

tau_nett = -28.8 9.8 1.5 + 180 2

tau_net = -63.36 N m

system rotates clockwise

case c

2 schedule

tau_nett = -28.8 9.8 1.5 - 180 3

tau _net = - 963.36 N m

3 counterclockwise

tau_nett = -28.8 9.8 1.5 + 180 3

tau_net = 116.64 Nm

the sitam rotated counterclockwise

4 0

9 months ago