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s344n2d4d5 [400]

3 years ago

11

32/16-6(6-8)+8 Answer: (-2) 22 18 2

1 answer:

PIT_PIT [208]3 years ago

4 0

The answer is 22 help it help

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1/13 In a pet store, 27 gallons of water are used to fill 5 fish tanks completely. If each tone holds

mario62 [17]

Answer:

Gallons in each tank= 5.4 G

Gallons in 2 fish tanks= 10.8 G

Step-by-step explanation:

To find the gallons of water in each tank, divide 27 gallons by 5 fish tanks.

27/5= 5.4

To find the number of gallons to fill 2 fish tanks, multiply 5.4 (gallons in 1 tank) by 2 (2 tanks).

5.4*2= 10.8

8 0

2 years ago

Read 2 more answers

I have 256 fence and the lengths are 3 times it's width. What are the lengths ?

Montano1993 [528]

If this is a rectangle, then the answer is the length=96 unitsI just formed two linear equations that follow the information.
1. 2l + 2w= 256
2. l=3w
Then, I solved for w by using substitution. w is 32. I then multiplied it by 3. I get the length as 96.

6 0

3 years ago

If the price is increasing at a rate of 2 dollars per month when the price is 10 dollars, find the rate of change of the demand.

densk [106]

Answer:

The demand reduces by $7.12 per month

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Step-by-step explanation:

Given

$p\to price$

$x \to demand$

$2x^2+5xp+50p^2=24800.$

$p =10; \frac{dp}{dt} = 2$

Required

Determine the rate of change of demand

We have:

$2x^2+5xp+50p^2=24800.$

Differentiate with respect to time

$4x\frac{dx}{dt} + 5x\frac{dp}{dt} + 5p\frac{dx}{dt} + 100p\frac{dp}{dt} = 0$

Collect like terms

$4x\frac{dx}{dt} + 5p\frac{dx}{dt} = -5x\frac{dp}{dt} - 100p\frac{dp}{dt}$

Factorize

$\frac{dx}{dt}(4x + 5p) = -5(x + 20p)\frac{dp}{dt}$

Solve for dx/dt

$\frac{dx}{dt} = -\frac{5(x + 20p)}{4x + 5p}\cdot \frac{dp}{dt}$

Given that: $2x^2+5xp+50p^2=24800.$ and $p = 10$

Solve for x

$2x^2 + 5x * 10 + 50 * 10^2 = 24800$

$2x^2 + 50x + 5000 = 24800$

Equate to 0

$2x^2 + 50x + 5000 - 24800 =0$

$2x^2 + 50x -19800 =0$

Using a quadratic calculator, we have:

$x \approx -113\ and\ x\approx88$

Demand must be greater than 0;

So: $x=88$

So, we have: $x=88$ ; $p =10; \frac{dp}{dt} = 2$

The rate of change of demand is:

$\frac{dx}{dt} = -\frac{5(88 + 20*10)}{4*88 + 5*10} * 2$

$\frac{dx}{dt} = -\frac{5(288)}{402} * 2$

$\frac{dx}{dt} = -\frac{2880}{402}$

$\frac{dx}{dt} \approx -7.16$

<em>This implies that the demand reduces by $7.12 per month</em>

8 0

3 years ago

What is the diameter, area and circumference of a circle with a radius of 3 cm

Gemiola [76]

Answer:

DIAMETER: 2*3=6

AREA: Π*3^2=9Π

CIRCUMFERENCE: 2*Π*3=6

Step-by-step explanation:

8 0

2 years ago

Pls help also<br> no links

Norma-Jean [14]

Answer:

3.8

Step-by-step explanation:

Equation is: 2(8.3)+?+3.8=24.2

I might have gotten the Equation wrong sorry lol

6 0

2 years ago