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bearhunter [10]
4 years ago
9

Help please :) ! The dashed triangle is the image of the pre-image solid triangle. What is the scale factor used to create the d

ilation? Enter your answer in the box.

Mathematics
2 answers:
Helga [31]4 years ago
5 0
<span>Ans : -3. Explanation : Looking at the figure and its image, three things are immediately obvious..... The image is bigger The image is inverted. The figure and the image have a common point. The common point is the centre of dilation. (â’4, â’4) The fact that it lies BETWEEN the image and the figure means that the SF is a negative number. This accounts for the fact that the image is inverted. To find the Scale Factor divide a side in the image the same side in the figure Looking at the horizontal lines we see.. a side in the image the same side in the figure =â’6/2=â’3</span>
Keith_Richards [23]4 years ago
4 0

Let

x---------> measure of the base of the triangle of the image

y---------> measure of the base of the triangle of the pre-image

sf-------> the scale factor

we know that

the scale factor is equal to

sf=\frac{x}{y}

in this problem we have

x=6\ units\\y=3\ units

<u>Find the scale factor</u>

substitute the values of x and y in the formula above

sf=\frac{6}{3}=2

therefore

<u>the answer is</u>

the scale factor is equal to 2


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VashaNatasha [74]

Answer:

14√2

Step-by-step explanation:

This is a 45-45-90 triangle

Because both of the angles are the same all sides, but the hypotonouse are the same

this means that the other length is 14 too

we can use a²+b²=c² to solve

14²+14²=c²

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4 0
3 years ago
Lines m and n are parallel.<br><br> What is angle 2?<br><br> A. 39<br> B. 57<br> C. 67<br> D. 74
max2010maxim [7]

Answer: The correct answer is option C: 67

Step-by-step explanation: So we have four different lines intersecting at one point or the other and these are lines m, n, s and t. Also lines m and n are parallel, so we shall start from there. If lines m and n are parallel, then angle 74 along line n is equal to angle 9X + 2 along line m {corresponding angles are equal}. Therefore

9x + 2 = 74

9x = 74 - 2

9x = 72

Divide both sides of the equation by 9

x = 8.

Also the angle bounded by the intersection of lines m and s equals 74 {opposite angles are equal} because it’s opposite angle 9x + 2 and it’s also alternate to angle 74.

Looking at angle 5x - 1 along line t, substitute for the value of x

= 5(8) - 1

= 40 - 1

= 39

Therefore if angle 5x - 1 is calculated as 39, observe carefully that lines m, t and s intersect to form a triangle. The angles in the triangle are 39, 74 and S (labeled as angle 2). To calculate angle S,

S + 39 + 74 = 180 {Sum of angles in a triangle equals 180}

S + 113 = 180

Subtract 113 from both sides of the equation

S = 67

Therefore angle 2 equals 67 degrees.

5 0
4 years ago
Answer the question.
Molodets [167]
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4 0
3 years ago
A banner has a length of 10 feet and an area of 7 square feet. What is the width of the banner?
const2013 [10]

Answer:

the width is 0.7 feet

Step-by-step explanation:

Well we know that area = length * width. We know both the area and length, but not the width. Let's substitute the area and length in this equation, and substitute x for the width.

 

7 = 10 * x, or 7 = 10x

 

Now, solve for the width, or x, by dividing both sides by 10.

 

7(/10) = 10x(/10)

 

7/10 = x

 

Simplify 7/10 = 0.7

So the width of the banner is is 0.7 ft!

6 0
4 years ago
The sum of the first three terms of A.P is 18 if the first term is 4 find their product​
Nataly_w [17]

Answer:

192

Step-by-step explanation:

The sum of the first 3 terms of the A. P is

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12 + 3d = 18 ( subtract 12 from both sides )

3d = 6 ( divide both sides by 3 )

d = 2

Thus the first 3 terms are

4, 6, 8 and their product = 4 × 6 × 8 = 192

6 0
4 years ago
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