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
Verdich [7]
3 years ago
5

A student solved the following problem and made an error:

Mathematics
1 answer:
liubo4ka [24]3 years ago
8 0

All the steps were correct except the final statement. The mistake was in Line 6.

Line 6 triangle ABC is congruent to triangle EFD by SAS.

<span>This does not follow. The SAS postulate states that if two sides and the included angle of one triangle is congruent to two sides and the included angle of another triangle. The student only proved that one side of the triangle (AC) is congruent to the side of another triangle (EF) .</span>

You might be interested in
50 points. Please explain each step​
3241004551 [841]
<h3>Sin\theta_{1}=\frac{3\sqrt{21}}{17}</h3>

Solution given:

Cos\theta_{1}=\frac{10}{17}

\frac{adjacent}{hypotenuse}=\frac{10}{17}

equating corresponding value

we get

adjacent=10

hypotenuse=17

perpendicular=x

now

by using Pythagoras law

Hypotenuse ²=perpendicular²+adjacent ²

substituting value

17²=x²+10²

17²-10²=x²

x²=17²-10²

x²=189

doing square root

\sqrt{x²}=\sqrt{189}

x=3\sqrt{21}

now

In I Quadrant sin angle is positive

Sin\theta_{1}=\frac{perpendicular}{hypotenuse}

<h3>Sin\theta_{1}=\frac{3\sqrt{21}}{17}</h3>
7 0
3 years ago
Read 2 more answers
If tan x = .76 and cos x = .22, what is sin x?
andrezito [222]
If we have in mind that tanx = sinx / cosxso we can rightly say that sinx=tanx×cosx
If you place the data in the right places, the answer should be 0.1672
I hope this can help you greatly
3 0
3 years ago
Help me please༼ つ ◕_◕ ༽つ<br><br> The value of x is ___, and the value of y is ___.
jok3333 [9.3K]

Answer:

I think x is 60 and y is 50.

Step-by-step explanation:

70 + 50 = 120

180 - 120 = 60

x = 60

50 + 50 = 100

70 + 60 = 130

130 + 100 = 230

230 - 180 = 50

y = 50

I hope this helps u! :D

5 0
3 years ago
Read 2 more answers
How would I solve a problem like this?
Verizon [17]
(85 + 75) * t = 448
160t = 448
t = 448/160
t = 2.8 hrs
Answer: 2.8 hrs
4 0
3 years ago
Ralph Chase plans to sell a piece of property for ​$150000. He wants the money to be paid off in two ways a - ​short-term note a
Artyom0805 [142]

Answer:

Amount on 11% note = $106,666.67

Amount on 8% note = $43,333.33

Step-by-step explanation:

Let the amount for the ​short-term note at ​11% interest be x.

Thus, the amount for the ​short-term note at ​8% interest will be (150000 - x)

Now we are told that the total interest paid is $15,200.

Thus;

0.11x + 0.08(150000 - x) = 15200

0.11x + 12000 - 0.08x = 15200

Rearranging gives;

0.03x = 15200 - 12000

0.03x = 3200

x = 3200/0.03

x = $106666.67

Thus, amount for 8% note = $150000 - $106666.67 = $43,333.33

5 0
3 years ago
Other questions:
  • If g(x) =4x^2-16 were shifted 9 units to the right and 1 down, what would be the new equation
    15·2 answers
  • What is the equation for the area of a square and the length of a side
    8·1 answer
  • I give thank and 5 stars :D
    11·1 answer
  • Each new triangle shown below has one more dot per side than the previous triangle. What is the total number of dots on the 200t
    11·1 answer
  • Hi I was wondering if someone know how to do this I did it but a long time ago and now the teacher wants me to do corrections to
    6·1 answer
  • WILL GIVE BRAINLIEST TO WHOEVER ANSWERS CORRECTLY!!!
    14·1 answer
  • Factor 20pq- 20 qr +4p - 4r
    6·1 answer
  • Pls pls help me with this
    11·2 answers
  • 55 points! Brainlist for first answer!
    6·1 answer
  • Equivalent ratio <br><br>9:36=<br>18:48:6=<br>8:24:40=<br>48:72=<br>21:27=<br>​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!