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
Gennadij [26K]
2 years ago
11

Find the Error: A student is finding the measures of the angles in a triangle that have the ratio 4:4:7. Find the mistake and co

rrect it.
4x + 4x + 7x = 180
15x = 180
X = 12

So, the angle measures are 12, 12, and 84.​

Mathematics
2 answers:
BaLLatris [955]2 years ago
7 0

Answer:

angles are 48°, 48°, 84°

Step-by-step explanation:

ratio of angles = 4 : 4 : 7 = 4x : 4x : 7x ( x is a multiplier )

the sum of the 3 angles = 180 , then

4x + 4x + 7x = 180 , that is

15x = 180 ( divide both sides by 15 )

x = 12

the student made the error of assuming x = 12 was the size of the 2 equal angles.

the correct angles are

4x = 4 × 12 = 48°

4x = 4 × 12 = 48°

7x = 7 × 12 = 84°

Vikki [24]2 years ago
6 0

Answer:

84 is the only correct one, the angle measures 12 and 12 should be 48 and 48

You might be interested in
WE ARE GONNA START A RIOT!! as you know, I wasted 310 points on an essay, counting, and all these bots do is put LINKS and do no
-Dominant- [34]

Answer:

ME LOL

Step-by-step explanation:

XDHJCVEFBV,RW

6 0
2 years ago
Which of the following inequali
Maru [420]

Answer:

3<5

Step-by-step explanation: dont see a picture but i have an example

3 0
3 years ago
How are all angles in the 4th quadrant, negative or positive?
anastassius [24]

Answer:

They are all positive because you must go right.

They are all negative because you must go down.

Step-by-step explanation:

Example. (1,-4)

You go over one.

Down 4

5 0
3 years ago
Please help I really need help
Rasek [7]
This is not a risible  
7 0
3 years ago
Sumy is working in geometry class and is given figure ABCD in the coordinate plane to reflect. The coordinates of point D are (a
Makovka662 [10]

Answer:

(b, a)

Step-by-step explanation:

Example if D was (3, 2) and reflects across y = x, D' will be (2, 3)

8 0
3 years ago
Read 2 more answers
Other questions:
  • What are the roots of y = x2 – 3x – 10?
    5·1 answer
  • I am getting ready for my GED test. What is 3 is 0.2 percent of what number?
    6·1 answer
  • Could somebody answer this question please
    9·2 answers
  • A mountain climber reached an elevation of 1,600 feet above sea level. Which number line represents all locations below the clim
    8·2 answers
  • Please help ill mark you as brainlesit if correct!​
    8·1 answer
  • Name five x values for which the sine function equals to 0. Please help!!
    8·2 answers
  • A. 325/27<br><br> B. 95/9<br><br> C. 65/27<br><br> D. 35/9
    11·1 answer
  • What is 9(5x)? I really need help on this
    7·2 answers
  • Roatate triangle p 90* clockwise about the point (2,-1)
    6·1 answer
  • $12,000 deposit, simple interest at 8.5% for 5 years.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!