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3 years ago

Part 1: Writing Expressions

Mathematics

1 answer:

Eddi Din [679]3 years ago

6 0

Answer:

3(7j + 2 + 4j)

Step-by-step explanation:

We have to write an expression that looks like Sarah’s expression: 5(2j + 3 + j). We habr Replace the coefficients so that our expression is not equivalent. Also We may use any number that we choose to replace the coefficients ensuring to leave the variables the same.

Example, 3(7j + 2 + 4j) looks like Sarah’s expression but is not equivalent.

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Factor the quadratic expression in the equation y=2x^2+28x+96 and use the factors to find the zeros of the equation. Then, use t

gavmur [86]

Answer:

$x=-7$

Step-by-step explanation:

We have been given an equation $y=2x^2+28x+96$ . We are asked to find the zeros of equation by factoring and then find the line of symmetry of the parabola.

Let us factor our given equation as:

$2x^2+28x+96=0$

Dividing both sides by 2:

$x^2+14x+48=0$

Splitting the middle term:

$x^2+6x+8x+48=0$

$(x^2+6x)+(8x+48)=0$

$x(x+6)+8(x+6)=0$

$(x+8)(x+6)=0$

Using zero product property:

$(x+8)=0\text{ (or) }(x+6)=0$

$x+8=0\text{ (or) }x+6=0$

$x=-8\text{ (or) }x=-6$

Therefore, the zeros of the given equation are $x=-8\text{ (or) }x=-6$ .

We know that the line of symmetry of a parabola is equal to the x-coordinate of vertex of parabola.

We also know that x-coordinate of vertex of parabola is equal to the average of zeros. So x-coordinate of vertex of parabola would be:

$\frac{-8+(-6)}{2}=\frac{-14}{2}=-7$

Therefore, the equation $x=-7$ represents the line of symmetry of the given parabola.

4 0

3 years ago

Help me please Solve for r <br> d=rt

Vika [28.1K]

Watch closely. I'll try to go slow.
Stop me if I go too fast, or if I do anything that you don't understand.

Ready ?

You said d = r t

Divide each side by ' t ' : d / t = r

5 0

3 years ago

Hello, may someone plz help me

fenix001 [56]

Answer:

Step-by-step explanation:

this is not high school- but uhm

1) KAT

2)TAK

3) SAT

i think thats the answer for the first section..

4 0

3 years ago

M<5=? what’s it equal

WINSTONCH [101]

Answer:

Step-by-step explanation:

They are the same angle degree.

5 0

3 years ago

What number is q in the problem -8-q-10q=-9q+6

uranmaximum [27]

For this question you can say:
-8 -11q = -9q +6
so now you can add +9q on both sides and +8 on both sides of the equation:
-11q + 9q = 8 + 6
-2q = 14
q = 14/-2
q = -7 :)))
I hope this is helpful
have a nice day

8 0

3 years ago

Read 2 more answers