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g100num [7]
2 years ago
5

Jillana takes a single dose of medication that remains in her body according to the equation r = 200(0.75)d, where r represents

the amount of medication remaining after d days. If Jillana had taken the medication two days earlier, the amount of medication remaining in her system relative to the amount that remains in her system after d      days would be represented using the equation r2 = 200(0.75)d + 4. Which of the following is an equivalent equation?
Mathematics
1 answer:
grin007 [14]2 years ago
7 0
I looked at another online and it said letter A. (Not 100% sure)
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In Ms. Dole's class, students received grades of 87, 72, 99, 93, and 84 on yesterday's quiz. What was the mean of the quiz grade
Naddika [18.5K]
Hello!

The mean is the average of the numbers

To find the average you add them all up and divide the sum by the amount of numbers added

87 + 72 + 99 + 93 + 84 = 435

Divide the sum by the amount of numbers added

435 / 5 = 87

The answer is 87

Hope this helps!
4 0
2 years ago
Read 2 more answers
Write a different expression that has the same quotient as -3/8 and 3/-8.
matrenka [14]
An equivalent fraction is a fraction formed by multiplying the numerator and the denominator of a fraction by a common number.

-\frac{3}{8} =- \frac{3\times2}{8\times2} = -\frac{6}{16}
4 0
2 years ago
Why did Helga the witch sign up for anger management classes?
goblinko [34]
Helga the witch signed up for anger management classes because she could not keep her hexes to herself.
I think this is the answer.

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3 0
2 years ago
A daylily farm sells a portion of their daylilies and allows a portion to grow and divide. The recursive formula an=1.5(an-1)-10
zaharov [31]

Answer:

Hence, the number of daylilies in the first year were:

600

Step-by-step explanation:

It is given that:

the recursive formula a_n=1.5(a_{n-1})-100 represents the number of daylilies, a, after n years.

Also we are given that in the fifth year they have 2,225 daylilies.

i.e.

a_5=2225

Also,

a_5=1.5a_4-100

a_4=1.5a_3-100

This means that:

a_5=1.5(1.5a_3-100)-100\\\\a_5=(1.5)^2a_3-100\times (1.5)-100

Similarly,

a_3=1.5a_2-100

so,

a_5=(1.5)^2\times (1.5a_2-100)-100\times (1.5)-100\\\\a_5=(1.5)^3a_2-(1.5)^2\times 100-(1.5)\times 100-100

and so, putting a_2 in terms of a_1 we get:

a_5=(1.5)^4a_1-(1.5)^3\times 100-(1.5)^2\times 100-(1.5)\times 100-100

Now on putting the value of a_5 we find the value of a_1

2225-(1.5)^4a_1-337.5-225-150-100\\\\2225=5.0625a_1-812.5\\\\2225+812.5=5.0625a_1\\\\3037.5=5.0625a_1\\\\a_1=\dfrac{3037.5}{5.0625}\\\\a_1=600

Hence, the number of daylilies in the first year were:

600

4 0
2 years ago
You are an urban planner assessing the growth of a city. Ten years ago, the city's population was 249,583. Its current populatio
joja [24]

Answer:

27.52 percent

Step-by-step explanation:

Percentage increase = (new - original)/ original * 100

new = 318270

old = 249583

Substitute in what we know

percentage increase = (318270-249583)/249583 *100

                                     = (68687/249583) *100

                                       .275207045*100

                                       27.5207045 percent

6 0
2 years ago
Read 2 more answers
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