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
True [87]
3 years ago
9

Solve this question fast....in the attachment​

Mathematics
1 answer:
avanturin [10]3 years ago
4 0

Answer:

z = 4

y = -1

x = 2

Step-by-step explanation:

x - y = 3

Therefore => x = 3 + y

y + 2z =7

Therefore => y= 7 - 2z

We have the equation :

2x + 3y + 4z = 17

2(3 + y) + 3(7 - 2z) + 4z = 17

6 + 2y + 21 - 6z +4z = 17

2(7 -2z) - 2z + 27 = 17

14 - 4z - 2z + 27 = 17

-6z + 41 = 17

-6z = -24

z = 4

You might be interested in
There are 48 students in a school play. The ratio of boys to girls is 5 : 7. How many more girls are There are 48 students in a
Alisiya [41]
5 + 7 = 12
48 / 12 = 4
Boys: 4 * 5 = 20
Girls= 4*7=28
6 0
3 years ago
Read 2 more answers
P is the midpoint of DE¯¯¯¯¯DE¯ , DP=3x+2DP=3x+2, and DE=10x−12DE=10x−12. What is the length of DP¯¯¯¯¯DP¯ ?
miss Akunina [59]
3x+2 mulitiply by 2. you will get 6x+4 now put 10x-12 like so 6x+4=10x-12. then use like terms and subtract 6x from 10x. you will get 4x-12=4. then add 12 to cancel out then divide 16 by 4 and then x=4 then plug in 4 to replace x in 3x+2.
The answer is 14

5 0
3 years ago
Read 2 more answers
Punctele O, A, B, C sunt coliniare în această ordine, iar segmentele OA, AB și BC au lungimile exprimate în cm, prin numere natu
julia-pushkina [17]

Răspuns:

a) OC = 18cm

b) MN = 6cm

Explicație pas cu pas:

Găsiți diagrama la întrebarea atașată.

a) Din diagramă se poate observa că OC = OA + AB + AC

OC = 2n + 2n + 2 + 2n + 4

OC = 6n + 6

Următorul este să obțineți valoarea lui n:

OM = OA + AM

Să obținem segmentul AM;

Deoarece M este segmentul mijlociu al AC, atunci;

AM = AC / 2

AM = AB + BC / 2

AM = 2n + 2 + 2n + 4/2

AM = 4n + 6/2

AM = 2n + 3

Din moment ce OM = OA + AM

OM = 2n + 2n + 3

OM = 4n + 3

Dat fiind OM = 11

11 = 4n + 3

4n = 11-3

4n = 8

n = 2

Următorul pas este să calculați OC;

OC = 6n + 6

OC = 6 (2) + 6

OC = 18

Prin urmare, lungimea segmentului OC este de 18 cm

b) Această întrebare ne cere să găsim segmentul de linie MN.

Din diagramă, MN = AM - AN

Deoarece AM = 2n + 3 din întrebarea 1;

AM = 2 (2) +3

AM = 4 + 3

AM = 7

Acum, să obținem AN:

Din diagramă, AN = ON-OA și ON = OB / 2

AN = OB / 2 - OA

AN = (2n + 2n + 2) / 2 - 2n

AN = 4n + 2/2 - 2n

AN = 2n + 1 - 2n

AN = 2n-2n + 1

AN = 1

De la MN = AM - AN

MN = 7 - 1

MN = 6cm

Prin urmare, distanța dintre N, mijlocul segmentului OB și punctul M este de 6cm

6 0
3 years ago
Will Mark Brainlest help pleaseeeeee​
Masja [62]

Answer:

h(2) = 7/4

h(-3) = -2

h(-2) = 11/(-8)

h(-3) - h(-2) = -(5/8)

Step-by-step explanation:

h(x) = (2x^2-x+1) / (3x-2)

h(2) = (2*2^2 - 2 + 1) / (3*2 - 2)

       = (8 - 2 + 1) / (6 - 2)

       = 7/4

h(-3) = {2*(-3)^2 - (-3) + 1} / {3*(-3) - 2}

        = (18 + 3 + 1) / (-9 - 2)

        = 22/(-11)

        = -2

h(-2) = {2*(-2)^2 - (-2) + 1} / {3*(-2) - 2}

        = (8 + 2 + 1) / (-6 - 2)

        = 11/(-8)

h(-3) - h(-2) = (-2) - {11/(-8)}

                  = -(5/8)

Hope this will help. Please give me brainliest.

7 0
3 years ago
Read 2 more answers
Pls help me<br><br> What is the awners
GenaCL600 [577]

Step-by-step explanation:

I didn't understand the question.

Do u want the function?

if so

y = ax  + b

at 0=0

at 1= 3

b = 0

at 1=3

3=a

y = 3x

if ur looking for something else, please tell me.

6 0
2 years ago
Other questions:
  • The length of the base of a triangle is 8.5 cm and its height is 5.4 cm. If the area of the triangle is half of the product of i
    14·1 answer
  • What is 126 over 399 as a ratio
    13·2 answers
  • The graph of g(x) is the graph of f(x)=x+9 reflected across the y-axis.
    11·2 answers
  • Which of the following shows the correct solution steps and solution to 3x+2=17?
    15·2 answers
  • Suppose we want to choose 7 colors, without replacement, from 9 distinct colors?
    14·2 answers
  • What is development​
    15·1 answer
  • Which of the following statements about customer needs is true? O a) Satisfied customers will lead to more business. O b) Custom
    9·2 answers
  • REWARDING BRAINLY TO CORRECT ANSWER
    6·2 answers
  • If x=8 and y=−2, evaluate the following expression: 3x−y2
    12·1 answer
  • Its not math but I still need helppppp​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!