4 years ago

Which equation represents exponential decay?

Mathematics

1 answer:

MAVERICK [17]4 years ago

6 0

Y=(1/5)^x would be the only equation demonstrating decay of these

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A submarine is traveling 180 below sea level.Find the new position of the submarine after it ascends 55 feet

Marta_Voda [28]

Answer:

125 feet below sea level or -125

Step-by-step explanation:

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3 years ago

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If a cube is made of 8 unit cubes, what is the cube’s volume in cubic feet?

otez555 [7]

Length of unit cube = 1 foot
volume of unit cube = 1 ft³

If a cube is made of 8 unit cubes, cubes volume = 8×1 ft³ = 8 ft³

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4 years ago

(3b^3)^2 without exponents

mars1129 [50]

Answer:

When (3b³)² is simplified, it equals 3b⁶

Step-by-step explanation:

3 × 2 = 6

The exponent is 6

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3 years ago

Driving to your friend's house, you travel at an average rate of 35 miles per hour. On your way home, you travel at an average r

kenny6666 [7]

Answer:

14 miles

Explanation:

The relation that will be used to solve this problem is:

$Distance = Velocity*Time$

which can be rewritten as:

$Time = \frac{Distance}{Velocity}$

Assume that:

Distance from your house to your friend's house is d

Time taken from your house to your friend's house is t₁

Time taken from your friends house to your house is t₂

1- From your house to your friend's house:

Average rate = 35 miles/hour

Therefore:

$t_{1} = \frac{d}{35}$

2- From your friend's house to your house:

Average rate = 40 miles per hour

Therefore:

$t_{2} = \frac{d}{40}$

3- Round trip:

We know that the round trip took 45 minutes which is equivalent to 0.75 hours

This means that:

t₁ + t₂ = 0.75 hours

$\frac{d}{35}+\frac{d}{40}=0.75\\ \\\frac{40d + 35d}{1400}=0.75\\ \\\frac{75d}{1400}=0.75\\ \\ 1050 = 75d\\ d=14 miles$

Hope this helps :)

3 0

4 years ago

A number k increased by 7 =34

grin007 [14]

Let's set up this problem.
k+7=34
Subtract k from both sides.
k=27

5 0

3 years ago

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