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ella [17]
3 years ago
14

PLEASE HELP!! WILL MARK BRAINLIEST AND THANK YOU!!! IM DESPERATE!!

Mathematics
1 answer:
serious [3.7K]3 years ago
3 0

Answer:

<h2>693 m²</h2>

Step-by-step explanation:

This is a parallelogram.

The formula of an area of a parallelogram:

A=bh

<em>b</em><em> - base</em>

<em>h</em><em> - height</em>

From the graph we have <em>b = 21m</em> and <em>h = 33m</em>.

Substitute:

A=(21)(33)=693\ m^3

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How can i calculate the growth rate of the values below
Grace [21]

Answer:

  12%

Step-by-step explanation:

The equation for the growth is ...

  f(t) = (initial value)×(growth multiplier per period)^(number of periods)

where the growth multiplier is often expressed as a percentage added to 1:

  multiplier = 1+r

  growth rate = r

__

This equation has two unknowns:

  • initial value
  • growth multiplier

In order to find these, you can make use of two of the supplied data points. I like to choose the ones that are farthest apart, as they tend to average out any errors due to rounding.

Clearly, the table tells you the initial value is 210. If you don't believe, you can put the numbers in the equation to see that:

  f(0) = (initial value)×(growth multiplier)^0

  210 = (initial value)×1

  (initial value) = 210

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Using the last data point, we get ...

  f(7) = 210×(growth multiplier)^7

  464 = 210×(growth multiplier)^7 . . . . . . . . . fill in table value

  2.209524 = (growth multiplier)^7 . . . . . . .  divide by 210

You can solve this a couple of ways. My calculator is able to take the 7th root, so I can use it to find ...

  \sqrt[7]{2.209524}=\text{(growth multiplier)}\\1.119916\approx \text{(growth multiplier)}

Alternatively, you can use the 1/7 power:

  2.209524^(1/7) = (growth multiplier)

Another way to solve this is to use logarithms:

  log(2.209524) = 7×log(growth multiplier) . . . . . take the log

  log(2.209524)/7 = log(growth multiplier) . . . . . divide by 7

  0.04918553 ≈ log(growth multiplier)

  growth multiplier = 10^0.04918553 ≈ 1.11992 . . . . take the antilog

So, our growth multiplier is ...

  1 + r ≈ 1.11992

  r ≈ .11992 ≈ 12.0%

The rate of growth is about 12% in each period.

_____

Collapsing all of that to a single calculation:

  growth rate = (464/210)^(1/(7-0)) -1 ≈ 12.0%

8 0
3 years ago
Solve the equation and explain each step using apropriate Properties<br> -4(3x+6)+6=-30
Lina20 [59]

Answer:

The answer is x=1

Step-by-step explanation:

-4(3x+6)+6=-30

-12x-24+6=-30

-12x-18=-30

-12x-18+18=-30+18

-12x=-12

-12x/-12=-12/-12

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6 0
2 years ago
Solve the following quadratic equation by rearranging and then factorising x^2 + 7x + 19 = 9
wolverine [178]

Answer:

your lucky you did have a online lessons earlll

Step-by-step explanation:

The following are the temperatures in °C for the first 14 days of January:

-6, -2.5, 2, 2.5, -0.5, 5, 10, -3, -7, 3, -1, 7, 1, 4.5

5 0
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What the question and what the picture
8 0
3 years ago
(CO 2) A random selection from a deck of cards selects one card. What is the probability of selecting a spade
lora16 [44]

Answer:

P(Spade) = 0.25

Step-by-step explanation:

Given.

In a deck, there are:

Cards = 52

Spade= 13

Required

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This is represented as: P(Spade) and it is calculated using:

P(Spade) = \frac{Spade}{Cards}

Substitute 13 for Spade and 52 for Cards

P(Spade) = \frac{13}{52}

P(Spade) = 0.25

<em>Hence, the required probability is 0.25</em>

3 0
2 years ago
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