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3 years ago

5

Luella has a pond in her yard. She wants to surround it with 330 feet of fencing. Fencing is sold by the yard. How many yards sh

ould she buy?

1 answer:

s344n2d4d5 [400]3 years ago

4 0

Answer:

110 yards

330/ 3 ,=110

1yard =3 feet

Step-by-step explanation:

if you multiply 3 to 110=330

or 330 divided by 3=110 yards.

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Three fourths of a number p less subtracted by 2 is 5 sixths of a number r plus 5

goldenfox [79]

Three fourths of a number p less subtracted by 2 is 5 sixths of a number r plus 5

3/4 of p subtracted by 2 is 5/6 of a r plus 5

3/4 of p - 2 is 5/6 of r + 5

$\frac{3}{4} p-2= \frac{5}{6} r+5$ <--- answer?

$\frac{3}{4} p= \frac{5}{6} r+7$

$\frac{3p}{4} = \frac{5r}{6} +7$

$\frac{3p}{4}* \frac{6}{5r} = 7$

$\frac{18p}{20r} = 7$

$\frac{9p}{10r} = 7$

$\frac{p}{r} = 7* \frac{10}{9}$

$\frac{p}{r} = \frac{70}{9}$ <-- answer?

Hope this helps

5 0

3 years ago

6. A tank contains 100-gallon of pure water. At time t = 0, a solution containing 2 lb of salt per gallon flows into the tank at

SOVA2 [1]

Answer:

The answer is below

Step-by-step explanation:

Let Q represent the amount of salt in the tank at time t.

$\frac{dQ}{dt}= flow\ in - flow\ out\\ \\flow\ in=3\ gal/min*2\ lb/gal=6\ lb/min\\\\net\ gain\ in\ tank\ volume=3-4=-1, henceflow\ out= \frac{4Q}{100-t} \\\\\frac{dQ}{dt}= 6-\frac{4Q}{100-t} \\\\\frac{dQ}{dt}+ \frac{4Q}{100-t}=6\\\\The \ integrating\ factor\ is:\\\\IF=e^{\int\limits {\frac{4}{100-t} } \, dt }=e^{-4\int\limits {\frac{-1}{100-t}}=e^{-4ln(100-t)}=(100-t)^{-4}}\\\\Multiplying\ through \ by\ IF: \\\\(100-t)^{-4}\frac{dQ}{dt}+ (100-t)^{-4}\frac{4Q}{100-t}=6(100-t)^{-4}\\\\$

$Integrating:\\\\A(100-t)^{-4}=-2(100-t)^{-3}+c\\\\A=-2(100-t)+\frac{c}{(100-t)^{-4}} \\\\at, t=0,A=0\\\\0=-2(100-0)+\frac{c}{(100-0)^{-4}}\\\\c=0.02\\\\A=-2(100-t)+\frac{0.02}{(100-t)^{-4}}$

7 0

3 years ago

tell me you love me pls i need sum luv i spents alot of time doing this im doing another one but 100 pts

Anestetic [448]

Answer:

I love you and i'm proud of you :)

8 0

3 years ago

Help me pleaseeeeeeeeeeeeeeee

MrMuchimi

The correct answers are

a) 40%

b) 30%

4 0

3 years ago

Read 2 more answers

Directed line segment AB has endpoints A(2,3) and B(8,15). Point P has coordinated P(6,11). What ratio does P partition AB into?

Vladimir79 [104]

Refer to the graph shown below. It confirms that points A, B and P are
collinear.

Calculate the length of AP (as a).
a = √[(6 - 2)² + (11 - 3)²]
= 8.9443

Calculate the length of BP (as b).
b = √[(8 - 6)² + (15 - 11)²]
= 4.4721

Calculate ratio a/b.
a/b = 8.9443/4.4721 = 2
Therefore P partitions AB in a 2:1 ratio so that AP = 2*BP.

Answer: 2:1 ratio.

7 0

3 years ago