A Geometry student says I got lost in that lesson I wrote down that AD/AB eQUALS AC/ab but I have no idea where comes from

Answers

Answer 1

Answer:

Answer:

AD/AB = AB/AC

Step-by-step explanation:

If we take two triangules in that figure: ABC and ABD, both are triangles rectangles. We need to use the definition of cosine, with the angle in th A corner, we called ∅.

For the ABC triangle: cos(∅) = adjacent cathetus/hypotenuse = AD/AB

For the ABD triangle: cos(∅) = adjacent cathetus/hypotenuse = AB/AC

Then:

cos(∅) = AD/AB = AB/AC

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The measures of two base angles of an isosceles trapezoid are 7x – 12 and 5x + 6. What is the measure of x?Select one:
a. 3
b. 5
c. 7
d. 9

Answers

Because base angles on an isosceles trapezoid are equal you set up this equation
7x - 12 = 5x + 6
-5x+12 -5x +12
2x = 18
/2 /2
x = 9

Find the value for x and y

Answers

Answer: x=70, y=30

Step-by-step explanation:

Find the product. x 3(x 2 5x 1) x 6 5x 4 x 3 x 5 5x 4 x 3 x 5 5x 3 x 3

Answers

$x^(3) ( x^(2) +5x+1)= x^(5) +5 x^(4) + x^(3)$

Matilda asked 20 random people in the street if they would like to discuss what they want to do during the summer break. Seven of them said yes.How is this sample biased?

She should have asked more people.

The people who chose to participate might not be similar to the people who didn’t.

She should have asked girls only.

Answers

Answer: She should have asked more people.

Step-by-step explanation:

Given: Matilda asked 20 random people in the street if they would like to discuss what they want to do during the summer break.

Here sample size=20

We can see the sample is biased because the sample size is too small.

Through them we cannot decide the answer of the population.

She should have asked more people in the street if they would like to discuss what they want to do during the summer break. Then she need to make a list of their answers in approach to the answer.

Answer:

The correct answer is C. The people who chose to participate might not be similar to the people who didn't.

I just did the assignment and got it right.

0.74 Kcal/min to cal/secs

Answers

0.012333333 cal/secs

Which zero pair could be added to the function so that the function can be written in vertex form?A.3, –3
B.6, –6
C.9, –9
D.36, –36

Answers

The function in this problem should be: f(x) =x² + 12x + 6

y = x² + 12x + 6
y - 6 = x² + 12x

x² ⇒ x * x
12x ⇒ 2*6*x
missing number is 6² = 36

y - 6 + 36 = x² + 12x + 36

(x+6)(x+6) ⇒ x(x+6)+6(x+6) ⇒ x² + 6x + 6x + 36 = x² + 12x + 36

y + 30 = x² + 12x + 36
y = (x+6)² - 30

Choice is D. 36,-36

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