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
meriva
3 years ago
7

Find x if triangle ABC is congruent to triangle DEF

Mathematics
1 answer:
sergij07 [2.7K]3 years ago
7 0
If triangle ABC is congruent to triangle DEF, the angles A and D are corresponding, angles B and E are corresponding, and angles C and F are corresponding. They are congruent as well.  Since the only measures we have for corresponding angles is angle B and E. Since they are congruent, we can set them equal to each other to solve for x:
3x + 8 = 4x - 7 and x = 15. We can't use A and D because we don't have a value for A to set equal to D.
You might be interested in
May I know this answer
kap26 [50]
I think it’s C but I may be wrong
3 0
3 years ago
9. Solve the following system of equations. x + 2y − 6 = z 3y − 2z = 7 4 + 3x = 2y − 5z A. x = 0, y = 5, z = 4 B. C. D. x = 2, y
Inessa [10]
X + 2y - 6 = z..........x + 2y - z = 6
3y - 2z = 7
4 + 3x = 2y - 5z.....3x - 2y + 5z = -4

x + 2y - z = 6.....multiply by -3
3x - 2y + 5z = -4
---------------------
-3x - 6y + 3z = -18 (result of multiplying by -3)
3x - 2y + 5z = -4
--------------------add
-8y + 8z = - 22

-8y + 8z = -22
3y - 2z = 7 .....multiply by 4
----------------
-8y + 8z = -22
12y - 8z = 28 (result of multiplying by 4)
----------------add
4y = 6
y = 6/4 reduces to 3/2

-8y + 8z = -22
-8(3/2) + 8z = -22
-12 + 8z = -22
8z = -22 + 12
8z = -10
z = -10/8 reduces to -5/4

x + 2y - 6 = z
x + 2(3/2) - 6 = -5/4
x + 3 - 6 = -5/4
x - 3 = -5/4
x = -5/4 + 3
x = -5/4 + 12/4
x = 7/4

solution is (7/4, 3/2, -5/4).....x = 7/4, y = 3/2, and z = -5/4
4 0
3 years ago
determine the householder transformation that annihilates all but the first entry of the vector [1 1 1 1 ]t. specifically, if (
Stolb23 [73]

Answer:

v=a+ 2e1= [3 1 1 1] x^{T}.

Step-by-step explanation:

Let a = ^{}\left[\begin{array}{ccc}\\1&1&1\\\end{array}\right] ^{T}and we know that\alpha=±║α║₂= 2.

As we have gone over in class, the formula for v is v= a-\alphae1

with the sign of chosen to avoid subtraction. This gives v=a+ 2e1= [3 1 1 1] x^{T}.

Disclaimer ;The question is incomplete

Question:

Determine the Householder transformation that annihilates all but the first entry of the vector[1 1 1 1]>Specifically, if

I-2vv^{T}/v^{T}v\left[\begin{array}{ccc}1\\1\\1\\1\end{array}\right]==\left[\begin{array}{ccc}\alpha \\0\\0\\0\end{array}\right]

what are the values of α and v?

#SPJ4

learn more about it on

brainly.com/question/28180105

8 0
1 year ago
How do I round 0.3 to the nearest thousandth
Luda [366]
0.3 is 3 tenths.
The order of "ths" is tenths, hundredths, thousandths.
Since there are no numbers after the 3, you simply have to add 2 zeros to make it 300 thousandths.

0.300<span />
6 0
3 years ago
Whoever answers gets brainlist!
Musya8 [376]

Answer:

21 over 6 (21/6)

26 over 6 (26/6) =47 over 6 (47/6)

your final answer is 7 5/6

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • Thirty-one is three more than twice a number divided by three
    5·2 answers
  • Cot y, if csc y =-10/3 and cos y&lt; 0
    15·1 answer
  • Simplify i to the 37th power<br> A-1<br> B- -1<br> C- -i<br> D- i
    13·1 answer
  • Simplify the expression 5(z+6)=
    7·2 answers
  • Jodie bought a music player on sale for 50% off the original price, for $60. What was the price of the music player before the s
    10·1 answer
  • What is the y-intercept of the line that passes through the points (2,-1) and (-3,9)
    12·1 answer
  • At the Football game they expect that for every 4 people that attend 3 hot dogs will be sold. What is the equation
    10·2 answers
  • Please help me guys I need it
    6·1 answer
  • Please answer i will brainliest:D
    12·2 answers
  • How many circles are there for each box
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!