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3 years ago

5

In the same year, the average finishing time for u.s. women was four hours and 41 minutes. What was their average speed in miles

per hour?

2 answers:

attashe74 [19]3 years ago

5 0

Answer:

Step-by-step explanation:

EleoNora [17]3 years ago

3 0

I need to know the distance.

speed= distance/ time

If you want to figure thier speed you need to divide the distance ( miles) by their time ( hours)

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The value V of a certain automobile that is t years old can be modeled by V(t) = 14,651(0.81). According to the model, when will

lakkis [162]

Answer:

a) The car will be worth $8000 after 2.9 years.

b) The car will be worth $6000 after 4.2 years.

c) The car will be worth $1000 after 12.7 years.

Step-by-step explanation:

The value of the car after t years is given by:

$V(t) = 14651(0.81)^{t}$

According to the model, when will the car be worth V(t)?

We have to find t for the given value of V(t). So

$V(t) = 14651(0.81)^{t}$

$(0.81)^t = \frac{V(t)}{14651}$

$\log{(0.81)^{t}} = \log{(\frac{V(t)}{14651})}$

$t\log{(0.81)} = \log{(\frac{V(t)}{14651})}$

$t = \frac{\log{(\frac{V(t)}{14651})}}{\log{0.81}}$

(a) $8000

V(t) = 8000

$t = \frac{\log{(\frac{8000}{14651})}}{\log{0.81}} = 2.9$

The car will be worth $8000 after 2.9 years.

(b) $6000

V(t) = 6000

$t = \frac{\log{(\frac{6000}{14651})}}{\log{0.81}} = 4.2$

The car will be worth $6000 after 4.2 years.

(c) $1000

V(t) = 1000

$t = \frac{\log{(\frac{1000}{14651})}}{\log{0.81}} = 12.7$

The car will be worth $1000 after 12.7 years.

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2 years ago

20% of Ms. Martin's class did not complete their homework. If there are 30 students in her class, how many did not complete home

padilas [110]

Answer:

Step-by-step explanation:

20% of 30 is 6

Words: 6 Students in Ms. Martin's class did not do their homework.

hope this helps :)

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2 years ago

Fill in the missing monomials: a 100x2= (_____)2

katrin2010 [14]

Answer:

100

Step-by-step explanation: its the same thing but in a different form

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3 years ago

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F (x )= 1/4 x for x = -5

Sholpan [36]

Answer:

-5/4

Step-by-step explanation:

f(x)=1/4x

f(-5)=1/4(-5)

f(-5)=-5/4

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3 years ago

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Ten students were polled about their favorite foods. Four students voted for pizza, three students voted for chicken, two voted

Natali5045456 [20]

Answer:

D

Step-by-step explanation:

Pizza+Tacos+spaghetti+Chicken=10

Pizza+Chicken=7

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2 years ago

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