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Tpy6a [65]
2 years ago
7

Marcie built a scale model of the tallest building in town with an antenna on top. The model stands 6 2/3 centimeters tall. The

main building is 3/4 of the height of the building including the antenna. How tall is the antenna in the model? Pls help this is due today and i am really stressed out.

Mathematics
2 answers:
snow_tiger [21]2 years ago
8 0
The answer is gonna be 1/2
marysya [2.9K]2 years ago
7 0

The answer is 1/2...........

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What is the length of segment BD? Round your answer to the nearest hundredth. triangles ABC and ABD in which the triangles share
hichkok12 [17]

Answer:

BD = 4.99 units

Step-by-step explanation:

Consider the triangle ABD only.

The angle formed is 31 degrees which occurs between two sides that are AD and BC.

We know that for a right angled triangle, the angle can always be taken as an angle between hypotenuse and base.

Thus, The perpendicular sides is then 3 units, where base is BD and Hypotenuse is AD

Using formula for tanθ

tanθ = Perpendicular/Base

tan31 = 3/BD

0.601 = 3/BD

BD = 3/0.601

BD = 4.99 units

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Which of the following is a perfect square trinomial ?
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Answer:

The answer is A

Step-by-step explanation:

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Rohan had ten dollars. he bought x pounds of potatoes which were on sale for 40% off the original price. write and expression th
yanalaym [24]

Let y represent the original price of potatoes per pound

Since he purchased the potatoes at 40% off the original price, this can represented as y*(1-0.4)

Now the weight of potatoes he purchased is x pounds, the total cost of these potatoes can be represented as x*y*(1-0.4)

The total amount of money he had is $10

The amount of money left over can be represented by the expression =

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where "x" is the weight of potatoes in pounds and "y" is the original price per pound of potatoes

5 0
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A group of kids just finished trick-or-treating. The number of pieces of candy collected by each of the 5 kids
NemiM [27]

Answer:

s = \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

s =\sqrt{\frac{(31-35)^2 +(33-35)^2 +(36-35)^2 +(41-35)^2 +(34-35)^2}{5-1}} =3.808

And the answer for this case would be :

s= 3.81 after round the value

Step-by-step explanation:

We have the following data set given:

31, 33, 36, 41, 34

If we want to find the standard deviation we need to find first the sample mean with this formula:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

And replacing we got:

\bar X = \frac{31+33+36+41+34}{5}= \frac{175}{5}= 35

Now we can find the sampel deviation with this formula:

s = \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

And replacing we got:

s =\sqrt{\frac{(31-35)^2 +(33-35)^2 +(36-35)^2 +(41-35)^2 +(34-35)^2}{5-1}} =3.808

And the answer for this case would be :

s= 3.81 after round the value

6 0
2 years ago
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