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Alisiya [41]
3 years ago
11

A tree is 28 years old. Estimate its diameter

Mathematics
2 answers:
Neporo4naja [7]3 years ago
8 0
I would guess 2.8 to 3 feet wide :)
Ghella [55]3 years ago
7 0
I would say 2.9 to 3 feet in diameter
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1. A sum of money is shared among Jessica, Amanda, and Beverly in the ration 8:9:3
astra-53 [7]

Answer:

$200

Step-by-step explanation:

Amanda       Beverly

     9         :       3

difference between Amanda and Beverly = 9 - 3 = 6 portions.

∴ value of 6 portions = $60

   value of 1 portion  =  $ 60 / 6

                                  = $10

Total no. of portions = 8 + 9 + 3 = 20

Total sum of money to be shared = value of 1 portion x Total no. of portions

                                                         = $10 x 20

                                                         = <u>$200</u>

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2 years ago
Solve d = rt for r when d = 268mi and t=4hr
vichka [17]

Answer:

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Step-by-step explanation:

4 0
3 years ago
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The concentration of a drug in the bloodstream C(t) at any time t, in hours, is described by the equationC(t)=100t/t^2+25where t
alisha [4.7K]

Answer:

It will take 5 hours until it reaches its maximum concentration.

Step-by-step explanation:

The maximum concentration will happen in t hours. t is found when

C'(t) = 0

In this problem

C(t) = \frac{100t}{t^{2} + 25}

Applying the quotient derivative formula

C'(t) = \frac{(100t)'(t^{2} + 25) - (t^{2} + 25)'(100t)}{(t^{2} + 25)^{2}}

C'(t) = \frac{100t^{2} + 2500 - 200t^{2}}{(t^{2} + 25)^{2}}

C'(t) = \frac{-100t^{2} + 2500}{(t^{2} + 25)^{2}}

A fraction is equal to zero when the numerator is 0. So

-100t^{2} + 2500 = 0

100t^{2} = 2500

t^{2} = 25

t = \pm \sqrt{25}

t = \pm 5

We use only positive value.

It will take 5 hours until it reaches its maximum concentration.

4 0
3 years ago
PLZZ ANSWER THE QUESTION ​
sertanlavr [38]

Answer:

C

Step-by-step explanation:

In the graph it's curved, which is not linear, but the other lines are all straight.

4 0
3 years ago
What’s the answer to -3(-6)
Strike441 [17]

Answer:

positive 9 ??

Step-by-step explanation:

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6 0
3 years ago
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