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3 years ago

13

Select all the pairs of operations that have inverse relationships.

1 answer:

MissTica3 years ago

3 0

Answer:

The first one and the fourth one

Step-by-step explanation:

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the value of machine depreciates every year by 5%. If the present value of the machine is 100000,what will be its value after 2

valentina_108 [34]

It starts out being worth $100,000 (One hundred thousand dollars). Every year it depreciates by 5% (0.05). What is the value after two years? We can find this by multiplying.

100,000 * 0.05 = 5,000
100,000 - 5,000 = 95,000

95,000 * 0.05 = 4,750
95,000 - 4,750 = 90,250

The machine, after two years, will be worth $90,250.

3 0

3 years ago

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Jennifer and Kamlee are walking to school. After 20 minutes, Jennifer has walked 4/5 miles. After 25 minutes, Kamlee has walked

Nimfa-mama [501]

Answer:

Jennifer's speed is 2.4 miles/hour

Kamlee's speed is 2 miles/hour

Step-by-step explanation:

To find their speed,

Speed can be determined from the formula below,

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

Also, to determine the speed in miles per hour (miles/hour), we will convert the time spent by each of them to hour (NOTE: 60 minutes = 1 hour)

For Jennifer,

Distance = 4/5 miles

Time = 20 mins (Convert to hour)

∴Time = (20/60) hour = 1/3 hour

Hence,

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

$Speed = \frac{4/5 miles}{1/3hour}$

$Speed = \frac{4}{5} \times \frac{3}{1}$

$Speed = \frac{12}{5}$

$Speed = 2.4 miles/hour$

Hence, Jennifer's speed is 2.4 miles/hour

For Kamlee,

Distance = 5/6 miles

Time = 25 minutes (Convert to hour)

Time = (25/60) hour = 5/12 hour

Hence,

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

$Speed = \frac{5/6miles}{5/12 hour}$

$Speed = \frac{5}{6} \times \frac{12}{5}$

$Speed = 2 miles/hour$

Hence, Kamlee's speed is 2 miles/hour

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3 years ago

Solve for x. <br><br> -3x = -15

yuradex [85]

Answer:

x = 5

Step-by-step explanation:

-3x = 15

---- ----

-3 -3

x = 5

7 0

4 years ago

Read 2 more answers

Ill give you 28 points if you answer this!!

elena-14-01-66 [18.8K]

Answer:

D

Step-by-step explanation:

because youe last number is 90

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3 years ago

Which expression represents the total perimeter of her sandwich, and if x = 1.2, what is the approximate length of the crust?

Cerrena [4.2K]

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3 years ago