3 years ago

Someone help me pls

Mathematics

1 answer:

NNADVOKAT [17]3 years ago

6 0

Answer:

its either 12.5 or 32

Step-by-step explanation:

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Coffee table is 20% odd the original price of $115. If there is 7.5% sales tax, what is the final price of the coffee table?

netineya [11]

100%-20%= 80%=0.8

115(0.8)= 92

92(1.075)= 98.9

The final price of the coffee table is $98.90.

Hope this helps!

3 0

3 years ago

11. The doubling time of a population of plants is 12 years. Assuming that the initial population is 300 and that the rate of in

Anastasy [175]

Answer:

The population will be of 2400 in 36 years.

Step-by-step explanation:

The equation for the population of plants after t years follows the following format:

$P(t) = P(0)(1+r)^{t}$

In which P(0) is the initial amount of plants and r is the yearly rate which it increases.

Assuming that the initial population is 300

This means that P(0) = 300.

The doubling time of a population of plants is 12 years.

This means that P(12) = 2*300 = 600.

We use this to find r.

$P(t) = P(0)(1+r)^{t}$

$600 = 300(1+r)^{t}$

$(1+r)^{12} = 2$

$\sqrt[12]{(1+r)^{12})} = \sqrt[12]{2}$

$1 + r = 1.05946$

$P(t) = 300(1.05946)^{t}$

How large will the population be in 36 years

This is P(36)

$P(t) = 300(1.05946)^{36} = 2400$

The population will be of 2400 in 36 years.

6 0

3 years ago

May I get help on this question please?

nata0808 [166]

Answer:2.50

Step-by-step explanation:

6 0

3 years ago

Find two consecutive whole numbers that <br> 20<br> lies between.

Volgvan

28 I think is in between it

4 0

4 years ago

In the expression 2(10x) + 15y, x represents the number of hours Nina works in a week at her first job and y represents the numb

astra-53 [7]

Answer:

Step-by-step explanation:Nina makes 20x dollars at her first job each week

3 0

2 years ago