Ask question

Ask question

All categories

2 years ago

12

Write y=2(x + 6)(x + 3) in standard form

1 answer:

Volgvan2 years ago

6 0

Answer:

y = 2x² + 18x + 36

Step-by-step explanation:

Given

y = 2(x + 6)(x + 3) ← expand the factors using FOIL

y = 2(x² + 9x + 18) ← distribute parenthesis by 2

= 2x² + 18x + 36 ← in standard form

You might be interested in

What is the relationship between the degree of a function and the degree of the derivative?

Over [174]

Answer:

Graphing the derivative with the function can illustrate how to find these turning points. The function is increasing exactly where the derivative is positive, and decreasing exactly where the derivative is negative. On the graph of the derivative find the x-value of the zero to the left of the origin.

3 0

2 years ago

If you start with 85 milligrams of Chromium 51, used to track red blood cells, which

zysi [14]

About 92 days are taken for 90 % of the material to <em>decay</em>.

The mass of radioisotopes ( $m$ ), measured in milligrams, decreases exponentially in time ( $t$ ), measured in days. The model that represents such decrease is described below:

$m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }$ (1)

Where:

$m_{o}$ - Initial mass, in milligrams.
$m(t)$ - Current mass, in milligrams.
$\tau$ - Time constant, in days.

In addition, the time constant is defined in terms of half-life ( $t_{1/2}$ ), in days:

$\tau = \frac{t_{1/2}}{\ln 2}$ (2)

If we know that $m_{o} = 85\,mg$ , $t_{1/2} = 27.7\,d$ and $m(t) = 8.5\,mg$ , then the time required for decaying is:

$\tau = \frac{t_{1/2}}{\ln 2}$

$\tau = \frac{27.7\,d}{\ln 2}$

$\tau \approx 39.963\,d$

$t = -\tau \cdot \ln \frac{m(t)}{m_{o}}$

$t = -(39.963\,d)\cdot \ln \frac{8.5\,mg}{85\,mg}$

$t\approx 92.018\,d$

About 92 days are taken for 90 % of the material to <em>decay</em>.

We kindly invite to check this question on half-life: brainly.com/question/24710827

8 0

2 years ago

Create a circle such that its center is point A and B is a point on the circle. Capture the image, and paste or insert it in the

Whitepunk [10]

Answer: need help as well

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Find the area of the bigger triangle (will give brainlest)

schepotkina [342]

Answer: a. 90

Step-by-step explanation: plz give me brainliest

6 0

2 years ago

Yoko bought 4 CDs that were each the same price. Including sales tax, she paid a total of $59.20. Of that total, $2.80 was tax.

irinina [24]

Answer:

$14.10

Step-by-step explanation:

$59.20 - $2.80 = $56.40

$56.40÷4=$14.10

6 0

2 years ago

Read 2 more answers