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3 years ago

Please answer this correctly without making mistakes

Mathematics

2 answers:

nikklg [1K]3 years ago

8 0

Answer: the best option is the 15% off card because it would lealve you at 311.95$ whereas the 50$ off would leave you at 317$

valkas [14]3 years ago

4 0

Answer:

second coupon with 15% off

Step-by-step explanation:

366.99-50= 316.99(first coupon )

366.99×( 100%-15%)= 311.9415 (second coupon)

316.99>311.9415

so the second coupon is the one she should use

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3 years ago

The value of a certain car decreases by 16% each year. What is the 1⁄2-life of the car?

svet-max [94.6K]

Answer:

The half life of the car is 3.98 years.

Step-by-step explanation:

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

$V(t) = V(0)(1-r)^{t}$

In which V(0) is the initial value and r is the constant decay rate, as a decimal.

The value of a certain car decreases by 16% each year.

This means that $r = 0.16$

$V(t) = V(0)(1-r)^{t}$

$V(t) = V(0)(1-0.16)^{t}$

$V(t) = V(0)(0.84)^{t}$

What is the 1⁄2-life of the car?

This is t for which V(t) = 0.5V(0). So

$V(t) = V(0)(0.84)^{t}$

$0.5V(0) = V(0)(0.84)^{t}$

$(0.84)^{t} = 0.5$

$\log{(0.84)^{t}} = \log{0.5}$

$t\log{0.84} = \log{0.5}$

$t = \frac{\log{0.5}}{\log{0.84}}$

$t = 3.98$

The half life of the car is 3.98 years.

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3 years ago

Which is the value of g(5) if g(x)=3.4x-8

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I do believe that the answer is 9.<span />

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3 years ago

Read 2 more answers

Can someone please help?

puteri [66]

Answer:

1)Alternate exterior

2) corresponding

3) alternate interior

4) non of these

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