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3 years ago

8

How do I do this? I don't get it

2 answers:

Delvig [45]3 years ago

6 0

First: work out the difference (increase<span>) between the two numbers you are comparing. Then: divide the </span>increase<span> by the original number and multiply the answer by 100. If your answer is a negative number then this is a </span>percentage<span> decrease.</span>

mash [69]3 years ago

3 0

Think of this as a fraction. Lets think the fraction is based off of the number "4" 4,8,12,16 Makes the fraction 1\4 (because there's 4 numbers total) then lets add the extra 2 numbers of 4+4.....4,8,12,16,20 ,24 . that makes 1\6. so now all you do is convert the fraction into a percentage.

The Correct Answer Is ----> 50%

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Last week, Judith's Diner sold 6 milkshakes with whipped cream on top and 69 milkshakes without whipped cream. What percentage o

jasenka [17]

Answer:

8%

Step-by-step explanation:

6/75 = 0.08 which is 8%.

8 0

2 years ago

Select the expression that is equal to (-2x +9) – (3x – 4).

Anna [14]

Answer:

C

Step-by-step explanation:

(-2x+9-3x-4)

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3 years ago

Find the value of 11 +22+33 + ... + 1100.

ella [17]

Answer:

sum of terms: 55550

Explanation:

$\sf S_n = \dfrac{n}{2} (u_{start}+u_{end}})$

Here the number of terms:

1100 ÷ 11 = 100

Using the Formula:

$\sf \dfrac{100}{2} (11+1100)$

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5 0

2 years ago

n many population growth problems, there is an upper limit beyond which the population cannot grow. Many scientists agree that t

givi [52]

Answer:

$\frac{dP}{dt} = rP(1 - \frac{P}{K}) = 0.017P(1 - \frac{P}{16})$

Step-by-step explanation:

The logistic function of population growth, that is, the solution of the differential equation is as follows:

$P(t) = \frac{KP_{0}e^{rt}}{K + P_{0}(e^{rt} - 1)}$

We use this equation to find the value of r.

In this problem, we have that:

$K = 16, P_{0} = 2, P(50) = 4$

So we find the value of r.

$P(t) = \frac{KP_{0}e^{rt}}{K + P_{0}(e^{rt} - 1)}$

$4 = \frac{16*2e^{50r}}{16 + 2*(e^{50r} - 1)}$

$4 = \frac{32e^{50r}}{14 + 2e^{50r}}$

$56 + 8e^{50r} = 32e^{50r}}$

$24e^{50r} = 56$

$e^{50r} = 2.33$

Applying ln to both sides of the equality

$50r = 0.8459$

$r = 0.017$

So

The differential equation is

$\frac{dP}{dt} = rP(1 - \frac{P}{K}) = 0.017P(1 - \frac{P}{16})$

3 0

3 years ago

Angie and Kenny play online video games. Angie buys 1 software package and 2 months of game play. Kenny buys 1 software package

GalinKa [24]

Answer:

The cost of one month of game play is $12.

Step-by-step explanation:

We are given the following in the question:

Cost of software package = $30

Let y dollars be the cost of one month of game play.

Angie buys 1 software package and 2 months of game play.

Angie's cost =

$1(30) + 2y = 2y + 30$

Kenny buys 1 software package and 4 months of game play.

Kenny's cost =

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Total cost = $132

Thus, we can write the equation:

$(2y+30)+(4y+30) = 132\\6y + 60 = 132\\6y = 132-60\\6y = 72\\\Rightarrow y = 12$

Thus, the cost of one month of game play is $12.

7 0

3 years ago