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3 years ago

Math please help will give brainiest.

Mathematics

2 answers:

Vera_Pavlovna [14]3 years ago

6 0

Answer:

Step-by-step explanation:

Add all the numbers together, to get 31. Then add 9. That leaves you with 40. Divide that by 5, or the number of terms. You get 8.

Hope that this helps!

Amanda [17]3 years ago

5 0

Answer:

Step-by-step explanation:

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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.

5 0

3 years ago

Help :(<br> Look at the screenshot please

denis-greek [22]

Answer:

I’m pretty sure

Step-by-step explanation:

6 faces

7 edges

5 vertices

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3 years ago

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Harrizon [31]

Answer:

62.8cubic units

Step-by-step explanation:

volume of a cylinder isπ×radius×radius×height.hope it helps.

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3 years ago

50% of 320 is equal to 80% of what number?

melisa1 [442]

Answer:

128

Step-by-step explanation:

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3 years ago

Which expression is equivalent to 36a-12b? <br><br> 3(6a-2b). 6(6a-2b). 3(6a+2b). 6(6a+2b)

Maurinko [17]

Answer:

6(6a-2b)

Step-by-step explanation:

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3 years ago

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