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
crimeas [40]
3 years ago
6

Solve the system of equations by the substitution method. 6x - y = 27 5x + 3y = 11

Mathematics
2 answers:
fenix001 [56]3 years ago
8 0

x=4. y=-3

Step-by-step explanation:

from equation 2

5x+3y=11..,.........2

3y=11-5x

y=11-5x/3............3

subtitute the value of y into equation 1

6x-y=27

6x-(11-5x)/3=27

6x-11+5x/3=27

lcm =3

multiplying through by 3

3(6x)-11+5x=3(27)

18x-11+5x=81

18x+5x=81+11

23x=92

x=4

when x= 4

subtitute x into equation 3

y=11-5(4)/3

y=11-20/3

y=-9/3

y=-3

x,y= 4&-3

never [62]3 years ago
6 0

Answer:

all work is shown and pictured

You might be interested in
Can someone please answer this, ill give you brainliest Would be very appreciated.
azamat

Answer:

The s represents the y-intercept of the graph.

The 100t in the equation means the initial velocity of the rockey is 100

Step-by-step explanation:

According to the text and graph.

The s reprecets the yintexept of the graph

h(t)=5+100t-16t²

h(t)=100-32t

k(0)=100

in terms of the rocket The 100t in the equation means the initial velocity of the rockey is 100

read the image for the rest

8 0
3 years ago
A triangular prism has a height of 12 cm. The triangular base is a right triangle whose side lengths are 3 cm, 4 cm, and 5 cm. W
Montano1993 [528]

Answer:

The volume of the prism is 72 cubic cm.

Step-by-step explanation:

This we know because a triangle with sides of 3 units, 4 units, and 5 units must be a 3–4–5 right triangle, the catheti (“legs”) of which are 3 and 4 units. So the area of the base is

3 cm. * 4 cm. / 2 = 6 square cm.

Lastly, the volume of the prism is the base area multiplied by the height:

6 square cm. * 12 cm. = 72 cubic cm.

7 0
3 years ago
A sequence of 1 million iid symbols(+1 and +2), Xi, are transmitted through a channel and summed to produce a new random variabl
Zigmanuir [339]

Answer:

E(w) = 1600000

v(w) = 240000

Step-by-step explanation:

given data

sequence = 1 million iid  (+1 and +2)

probability of transmitting a +1 =  0.4

solution

sequence will be here as

P{Xi = k } = 0.4              for k = +1

                  0.6              for k = +2

and define is

x1  + x2 + ................ + X1000000

so for expected value for W

E(w) = E( x1  + x2 + ................ +  X1000000 )   ......................1

as per the linear probability of expectation

E(w) = 1000000 ( 0.4 × 1 + 0.6 × 2)

E(w) = 1600000

and

for variance of W

v(w) = V ( x1  + x2 + ................ + X1000000 )    ..........................2

v(w) = V x1  + V x2 + ................  + V  X1000000

here also same as that xi are i.e d so cov(xi, xj ) = 0 and i ≠ j

so

v(w) = 1000000 ( v(x) )

v(w) = 1000000 ( 0.24)

v(w) = 240000

8 0
3 years ago
Can someone please help me?
LUCKY_DIMON [66]

Tessa made a mistake on line 3.

As you can see, the line below says 8x+12=-20. This is perfectly fine. Though when she gets rid of 12, she adds twelve. So if she did, it would look like 8x+24=-8. No, she made it 8x=-8. When getting rid of something, you must do it's value's opposite. Therefore, it would be 8x=-32. Since subtracting negative by negative is negative.

7 0
3 years ago
Point s is between r and t on segment rt . use the given information to write on equation in terms of x. solve the equation. the
Juli2301 [7.4K]
RS + ST = RT
The equation is:
2 x + 10 + x - 4 = 21
3 x + 6 = 21
3 x = 21 - 6
3 x = 15
x = 15 : 3
x = 5
RS = 2 * 5 + 10 = 10 + 10 = 20
ST = 5 - 4 = 1
Answer: Segment RS = 20 and ST = 1
7 0
4 years ago
Read 2 more answers
Other questions:
  • when f(x)= 2x^3+5x^2-18x+50 is divided by (x-c) or (x+c) it leaves the same remainder. determine the values of c. what is the re
    12·1 answer
  • What is the sum of the interior angels of a regular polygon with 7 sides. choices are
    12·1 answer
  • Please help me with this answer im not that good in math
    6·2 answers
  • For a project in statistics class, a pair of students decided to invest in two companies, one that produces software and one tha
    15·1 answer
  • One ninth divided into nine sixths equal what and reduce to lowest term
    5·2 answers
  • How do work this out 15+6/2+9*3
    5·1 answer
  • Cindy bought an item from the store. The cashier charged her $22.42 which included the original price of the item plus 7% state
    6·1 answer
  • Part 1 - Thxs for comming
    7·2 answers
  • The following data are the daily number of minutes of smartphone use for a random sample of 8 students at your institution:
    13·1 answer
  • PLZZZZ HELP ASAP... Donald spends a total of $17.43 on peanuts that cost $2.49 per pound. How many pounds of peanuts does he buy
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!