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Kipish [7]
3 years ago
7

A right triangle has an area of 36 square units. If you just get copies of this triangle using the scale factors below, what wil

l the areas be?

Mathematics
1 answer:
Nikitich [7]3 years ago
7 0

Answer:

324, 900, 9

Step-by-step explanation:

When a shape has its size increased by a scale factor, the size of its lengths are multiplied by this scale factor, yet its area is actually multiplied by the scale factor squared. This is due to <em>two</em> lengths being multiplied to contribute to the area, not just one. If it was a volume, you would multiply by the scale factor cubed!

Onto the answer, just follow the advice above:

36 * 3^2 = 36 * 9 = 324 square inches,

36 * 5^2 = 36 * 25 = 900 square inches,

36 * 0.5^2 = 36 * 0.25 = 9 square inches.

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Use a calculator to find angle theta for which tan theta = 2. Round to the nearest hundredth.
Mashutka [201]

Answer:

in degrees: theta = 63.43°

in radians: theta = 1.11 rad

Step-by-step explanation:

To find the value of the angle theta that gives us tan(theta) = 2, we should use the inverse function of the tangent in the calculator, that is, the arc tangent function.

Then, if we use the arc tangent function (in some calculators, it may be shown as 'atan' or 'tan^-1') in the value 2, we would find:

atan(2) = 63.435°

So the angle theta that gives us tan(theta) = 2 is theta = 63.43°.

Be sure to check in the calculator if the answer is given in degrees or radians.

In radians, we would find theta = 1.1071 rad (rounded to nearest hundredth: theta = 1.11 rad)

3 0
3 years ago
Ryan wants to describe the translation shown on the grid below. Ryan uses the following steps to describe the translation. Step
Dmitry_Shevchenko [17]

Answer:

Option C. Step 3

Step-by-step explanation:

step 1

Identify the pre-image and the image: The pre-image is triangle XYZ, and the image is X'Y'Z'

The step 1 is correct

step 2

Identify the number of units that each point moves horizontally: Each point moves one unit left.

The step 2 is correct

step 3

Identify the number of units that each point moves vertically: Each point moves three units down

<u>The step 3 is not correct</u>

Each point moves three units up

step 4

The translation is one unit left and three units down

<u>the step 4 is not correct</u>

The translation is one unit left and three units up

therefore

The first error is in the Step 3


6 0
3 years ago
Read 2 more answers
Triangle A’ B’ C’ is a dilation of triangle abc what is the scale factor
Ksivusya [100]

Answer:

1/2

Step-by-step explanation:

AC=18 and A'C'=9

AB(x)=A'B'

18(x)=9

x=9/18

x=1/2

7 0
3 years ago
Read 2 more answers
"During the tryouts for a university pep band, there were 4 trumpet players, 12 drummers, and 7 saxophonists. How many ways can
sladkih [1.3K]

The ways can the jazz band be selected  so there are 2 trumpet players, 5 drummers, and 3 saxophonists is given below .

Step-by-step explanation:

Let's first do the math with only the trumpet,drummer  and saxophonists player.

There are 4 Trumpet Player. There are 4 choices of trumpet players. Which means for each drummer, there are 4 groups of musicians:

T 1 D1S1

T 1 D2S2

and so on

So if there are 4 groups of musicians for each Trumpet ,12 drummer and there are 7 saxophonists , we get 12 groups.

It would be the product of

4T2, 12D5 and 7S3

That is 6*792*35=166,320

7 0
3 years ago
F is inversely proportional to d^2. When F=9, d=4 Work out d (positive value rounded to 2 DP) when F=6
Sever21 [200]

Answer:

d = 4.90

Step-by-step explanation:

Given the following data;

F = 9

d = 4

For an inversely proportional relationship, we have;

F = k/d²

Now, we would find the constant, k;

9 = k/4²

k = 9*16

k = 144

Next, to find d, when F = 6

d² = k/F

d² = 144/6

d² = 24

Taking the square root of both sides, we have;

d = 4.90

7 0
3 years ago
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