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3 years ago

11

David bought a poster for an art project. The poster is 2.7 ft wide and 3.9 ft tall. What is the area of the poster? Enter your

answer as a decimal in the box.

1 answer:

algol133 years ago

7 0

10.53 ft is the Area. :D:D

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A certain type of bacteria reproduces so that after x hours there are 15x cells. What single power represents he size relationsh

algol [13]

Answer:

let's say cells is c and hours are x that means there are 15 cells each hour. the equation for that is c=15x

after 08 hours the cells have multiplied 8 times their original size. meaning that the equation changes to this: c=15x x=8 c= 15(8)

x equals 8 at that time.. literally

ok the cells have multiplied and now there are 120 cells in total

then after one day the cells have multiplied over 12 times afterwards. now x equals 24. the equation would look a little like this:

c=15x x=24 c= 15(24)

there are 360 cells now.

Explain in your own words the relationship between x=8 with x=24 in the equation.

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3 years ago

Order the following values from least to greatest.

ch4aika [34]

Would be -91,-24,12,50.8

6 0

3 years ago

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After a weekend at the beach, Lisa has $274 less than she had when she left. The equation that represents this situation is e=s−

Anon25 [30]

Well that's easy it basically tells you all you gotta do is plug in the numbers

"E" is what you're trying to find out so you don't know that one it stays the same.

"S" is the amount of money she started with and it says she started with $500

And then she has $274 less than she started with.

E = 500 - 274

E= 226

She is left with $226 after her weekend at the beach.

~Hope it helped~

6 0

3 years ago

Solve the equation in the complex number system.

tatiyna

To get rid of $x^{3}$ , you have to take the third root of both sides:
$\sqrt[3]{x^{3}} = \sqrt[3]{1}$
But that won't help you with understanding the problem. It is better to write $x^{3}-1$ as a product of 2 polynomials:
$x^{3}-1 = (x-1)\cdot (x^{2} +x +1)$
From this we know, that $x-1 = 0 => x = 1$ is the solution. Another solutions (complex roots) are the roots of quadratic equation.

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3 years ago

Read 2 more answers

a ball is shot straight upward. with it's height, in feet, after t seconds given by the function f(t)=-16t^2+192t. Find the aver

jekas [21]

ANSWER

$80 {ms}^{ - 1}$

EXPLANATION

The average velocity of the ball is the rateof displacement over the total time.

The height of the ball, in feet, after t seconds is given by the function:

$f(t)=-16t^2+192t$

At time t=1, the height of the ball is

$f(1)=-16(1)^2+192(1)$

$f(1)=-16+192 = 176ft$

At time t=6, the height of the ball is

$f(6)=-16(6)^2+192(6)$

$f(6)=-16(36)+192(6)$

$f(6)=-576+1152 = 576$

The average velocity

$= \frac{f(6) - f(1)}{6 - 1}$

$= \frac{576- 176}{6 - 1}$

$= \frac{400}{5}$

$= 80 {ms}^{ - 1}$

7 0

3 years ago