1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
xz_007 [3.2K]
1 year ago
8

Did you get the same sum for both sets of angle measurements? What do you think that means? Create an equation to represent the

situation.

Mathematics
1 answer:
Nostrana [21]1 year ago
8 0

If we know the measure of two of the three angles of a triangle, since the sum of the angles in a triangle aways is 180º, we can write the equation for angles a, b and c:

\begin{gathered} m\angle a=x \\ m\angle b=y \\ m\angle c=z \\ \text{Then,} \\ 180º=x+y+z \end{gathered}

Let's suppose we know x and y, then z is:

z=180º-x-y

You might be interested in
What transformation preserves orientation but not size
Ket [755]

Answer:Reflection

Step-by-step explanation:

reflection does not preserve orientation

7 0
3 years ago
Read 2 more answers
Polygon ABCD is reflected and dilated to give polygon PQRS. The coordinates of the preimage are (2, 2), (6, 8), (12, 8), and (16
HACTEHA [7]

Answer: The scale factor of the dilation is 0.5.

Explanation:

It is given that ABCD is polygon which is reflected and dilated , then we get PQRS.

The vertices of ABCD are (2, 2), (6, 8), (12, 8), and (16, 2) respectively. The vertices of image  PQRS are (11, 15),(9, 12), (6, 12), and (4, 15) respectively.

The reflection affects the coordinates but does not affect the length of the sides.

But when we talk about dilation it affects the length of sides according to the scale factor or a constant factor.

If a line segment AB is dilated by scale factor k then length of A'B' is k times length of AB.

|A'B'|=k\times |AB|   .... (1)

So we have to find any side length of preimage and the side length of that side in image. it means we have to find AB and PQ.

Use distance formula to find the side length.

D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

AB=\sqrt{(8-2)^2+(6-2)^2}=\sqrt{36+16}=2\sqrt{13}

PQ=\sqrt{(9-11)^2+(12-15)^2}=\sqrt{4+9}=\sqrt{13}

It is noticed that the size of side in preimage is 2\sqrt{13} and the size of same side in image is \sqrt{13}.

Using equation (1), we get

\sqrt{13}=k \times 2\sqrt{13}

k=\frac{1}{2}

k=0.5

Hence, the value of scale factor is 0.5.

7 0
3 years ago
Read 2 more answers
"This summer, the water level of Lake Conroe changed by a rate of -1.5 feet per month. The water level at the beginning of May w
Verdich [7]

Answer:

181 feets

Step-by-step explanation:

Given that:

Rate of change in water level = - 1.5 feets per month

Water level at beginning of May = 187 feets above sea level

Water level at the end of 4 months =?

Total change after four months = rate of change per month * number of months

= - 1.5 * 4 = - 6 feets

Hence water level after 4 months :

187 feets + (-6 feets)

187 feets - 6 feets

= 181 feets

8 0
2 years ago
Root 8-3 root 32 + 4 root 50 ​
Bess [88]

Answer:

10\sqrt{2}

Step-by-step explanation:

\sqrt{8} -3\sqrt{32} +4\sqrt{50}

We can try to simplify first.

2\sqrt{2}-12\sqrt{2} +20\sqrt{2}

Now we can combine the like terms:

= 10\sqrt{2}

hope this helped! :)

3 0
2 years ago
Find the value of x please!! ASAP
cricket20 [7]

Answer:

x = 10

Step-by-step explanation:

By looking at the picture, I can tell the angle of the 3x is also 30 degrees.

This means 3x = 30.

When you solve for x by dividing each side by 3, you result with the answer of x = 10.

To check you work, plug in 10 for x to recieve 30 degrees again.

3 0
2 years ago
Other questions:
  • There were 11 friends playing a video game online when 5 friends quit.If each player left had 5 lives,how many lives did they ha
    6·2 answers
  • Write an equation in point-slow form for the line through the given point with the given slope.
    8·1 answer
  • Solve for x: −2x + 5 < 7
    15·1 answer
  • Q4. A simple random sample of size n=180 is obtained from a population whose size=20,000 and whose population proportion with a
    6·1 answer
  • Help identify the mapping diagram.
    9·2 answers
  • Find the area of the composite area
    6·1 answer
  • Find the area of the triangle. <br> PLEASE HELP ASPA
    7·2 answers
  • Astronauts on the International Space Station commonly face a health issue that some people on Earth experience as well. Researc
    15·2 answers
  • If total advertising expenditures on television advertising declined 4.1% to $141.7 billion in the current year, how much was sp
    8·1 answer
  • Write each points position as an ordered pair, like (1,2).<br><br> A:<br> B:<br> C:<br> D:
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!