MATHEMATICS HIGH SCHOOL

Simplify 8y(y - 4) + 3y(y + 2). the choices are below 24y 2 - 26y

11y 2 - 26y - 8

11y 2 - 26y

11y 2 - 8

Answers

Answer 1
Answer: 8y(y - 4) + 3y(y + 2) =

8y^2 - 32y + 3y^2 + 6y =

11y^2 - 26y
Answer 2
Answer:

Answer:           11y^2 - 26y

                                               

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4^(x-1) + 4^x + 4^(x+1)= 21 ​

Answers

Answer: x = 1

Step-by-step explanation:

isolate the variable by dividing both sides by factors that don't contain the variable.

I am so confused Please Help it is DUE NOW!!Select the polynomial that is a perfect square trinomial.
9x^2 + 9x + 1
36b^2 − 24b + 8
16x^2 + 24x + 9
4a^2 − 10a + 25

Answers

Answer:

16x^2 + 24x + 9  

Step-by-step explanation:

perfect square trinomial is of the form

a^2 + 2 * a * b + b^2

9x^2 + 9x + 1   = (3x)^2 + 3*3x*1 + 1^2  not a perfect square trinomial

36b^2 − 24b + 8  = ( 6b)^2  -2 * 6b *2 + ( 2 sqrt(2)) ^2  not a perfect square trinomial

16x^2 + 24x + 9  = ( 4x) ^2 + 2 * ( 4x) * 3 + 3^2 = perfect square trinomial

4a^2 − 10a + 25 = ( 2a) ^2 -  1 * 2a *5 + 5^2   not a perfect square trinomial

Answer:

The third answer listed:

16x^2+24x+9

Step-by-step explanation:

The trinomial:  

16x^2+24x+9

can be factored out as follows:

16x^2+24x+9\n(4x)^2+24x+3^2\n(4x)^2+12x+12x+3^2\n4x(4x+3)+3(4x+3)\n(4x+3)\,(4x+3)\n(4x+3)^2

which as can be seen,is the perfect square of a binomial, so this trinomial is what is called a perfect square trinomial.

If f(x)=3x+10x and g(x)= 2x-4, find (f+g)(x)

Answers

Answer:

=3^x +12x -4

Step-by-step explanation:

f(x)=3^x+10x

g(x)= 2x-4,

(f+g)(x) =  3^x+10x+ 2x-4,

Combine like terms

            =3^x +12x -4

What is 8+4d=5d i really need help

Answers

Answer:

d = 8

Step-by-step explanation:

Given

8 + 4d = 5d ( subtract 4d from both sides )

8 = d

Answer:

d=8

Step-by-step explanation:

8+4d=5d

1. subtract 8 from both sides > 8+4d-8=5d-8

2. simplify > 4d=5d-8

3. subtract 5d from both sides > 4d-5d=5d-8-5d

4. simplify again > -d = -8

5. divide both sides by -1 > -d/-1 = -8/-1

6. simplify again > d=8

What is a fraction of a circle of 120 degree

Answers

Since the fraction of 120 at a circle is 120/360 which is 1/3

Janet drove 300 miles in 4.5 hours. Write an equation to find the rate at which she was traveling.

Answers

If you would like to know the rate at which she was travelling, you can calculate this using the following steps:

300 miles ... 4.5 hours
x miles = ? ... 1 hour

300 * 1 = 4.5 * x
300 = 4.5 * x
x = 300 / 4.5
x = 200 / 3
x = 66.67 miles per hour

Janet was travelling at the rate 66.67 miles per hour. 
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