I need help plz i struggling

Mathematics

1 answer:

N76 [4]3 years ago

6 0

Answer:

circ : 37.7

vol: 144

Step-by-step explanation:

circ: c=2 $\pi$ r

circ= 2 $\pi$ 6 = 37.7 (have to use calc)

vol: base area x (pyramid height/3)

vol: 48 x (9/3)

vol: 48 x 3

vol: 144

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The residence of a city voted on whether to raise property taxes the ratio of yes votes to know votes was 5 to 6 if there was 58

Akimi4 [234]

5/6:x/5844

Cross multiply to get
29220=6x
x=4870

4870+5844=

10714 votes

Hope this helped :)

7 0

2 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.

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

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7 0

3 years ago

Consider the expression 63+81. How can you use the distributive property and the GCF to find an equivalent expression? Explain h

Ganezh [65]

Answer:

9(7+9)

Step-by-step explanation:

The greatest common factor in this situation is 9 so you could factor out 9 and get 9(7+9) you can check this answer by multiplying both numbers by the number on the outside of the parenthesis.

hope this helps mark brainliest please

5 0

3 years ago

I need this help me pls

Paladinen [302]

Answer:

30 cm^2 approximately

Step-by-step explanation:

The formula for calculating the area of a octagon is 2 (1 + √2) x^2 (x : side length)

2 + 2√2 × 100 = 30 cm^2 approximately

6 0

4 years ago