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
UkoKoshka [18]
3 years ago
10

Solve the system of equations using the substitution method. -5x − 3y = 16 y = x

Mathematics
2 answers:
Elena-2011 [213]3 years ago
6 0

Answer:

(-2, -2)

Step-by-step explanation:

Make use of the 2nd equation to eliminate x or y in the 1st equation:

-5x - 3(x) = 16

Then -8x = 16, and x = -2.  Since we are told that y = x, y = -2.

The solution is (-2, -2).

max2010maxim [7]3 years ago
3 0

Answer:

-5x - 3x = 16

-8x = 16

x = -2

y = x

Step-by-step explanation:

You might be interested in
The cash drawer of the market contains $227. There are six more $5 bills than $10 bills. The number of $1 bills is two more than
k0ka [10]

Answer:

There are 122 one dollar bills, 11 five dollar bills and 5 ten dollar bills.

Step-by-step explanation:

There are bills of one dollar, five dollars and ten dollars on the cash drawer, therefore the sum of all of them multiplied by their respective values must be equal to the total amount of money on the drawer. We will call the number of one dollar bills, five dollar bills and ten dollar bills, respectively "x","y" and "z", therefore we can create the following expression:

x + 5*y + 10*z = 227

We know that there are six more 5 dollar bills than 10 dollar bills and that the number of 1 dollar bills is two more than 24 times the number of 10 dollar bills, therefore:

y = z + 6\\x = 2 + 24*z

Applying these values on the first equation, we have:

2 + 24*z + 5*(z + 6) + 10*z = 227\\2 + 24*z + 5*z + 30 + 10*z = 227\\39*z + 32 = 227\\39*z = 227 - 32\\39*z = 195\\z = \frac{195}{39}\\z = 5

Applying z to the formulas of y and x, we have:

y = 5 + 6 = 11\\x = 2 + 24*5 = 122

There are 122 one dollar bills, 11 five dollar bills and 5 ten dollar bills.

4 0
3 years ago
15. Express 2/5 as a percentage​
blsea [12.9K]

Answer:

40\%

Step-by-step explanation:

\frac{2}{5}  \times 100 = 40\%

7 0
2 years ago
Read 2 more answers
There are 40 mg of bacteria in the sample. The next day there are 50 mg of bacteria, and the following day there are 62.5 mg of
Yuliya22 [10]
Don’t take my
Word for it but I think
It is C
6 0
2 years ago
PLEASE HELP ASAP DUE RN!
yKpoI14uk [10]

Answer:

27.9

Step-by-step explanation:

i googled it for you

7 0
2 years ago
Can u please help me with this 2 problem please
Mice21 [21]
<h2>19.</h2><h3>Given</h3>
  • window width and height are in proportion to building width and height
  • window width and height are 11 in and 18 in, respectively
  • building height is 108 ft
<h3>Find</h3>
  • building width
<h3>Solution</h3>

The proportional relation can be written as

... (building width)/(building height) = (window width)/(window height)

Multiplying by (building height) gives

... (building width) = (building heigh) × (window width)/(window height)

... (building width) = 108 ft × (11 in)/(18 in)

... building width = 66 ft

<h2>21.</h2><h3>Given</h3>
  • map distance = 6.75 in
  • map scale = 1.5 in : 5 mi
<h3>Find</h3>
  • actual distance
<h3>Solution</h3>

The distances are in proportion, so

... (map distance) : (actual distance) = 1.5 in : 5 mi

Multiplying by (5 mi)/(1.5 in)×(actual distance), we have

... (5 mi)/(1.5 in)×(6.75 in) = (actual distance) = 22.5 mi

6 0
3 years ago
Other questions:
  • Bianca is making scarves to sell she has 33 pieces of blue fabric 37 pices of green fabric nd 41 pieces of red fabric suppose Bi
    14·1 answer
  • Two trains leave the same station at the same time, but are headed in opposite directions. One train travels at 70 mph and the o
    9·2 answers
  • Divide and round to the nearest tenth 3.5 divided by 2.29
    13·1 answer
  • Only need help with number 9 plz help me
    11·1 answer
  • Helpppppppp? please thank you
    6·2 answers
  • PLZ HELP!!!!! ASAP!!!!!!!!!!!! NO FILES!
    15·1 answer
  • Standard form of a line that has a slope of -1 and passes through (-5,-1)
    8·1 answer
  • Find the value of x.<br> xo<br> (x-20)<br> (2x + 10)<br> (x + 40)
    14·1 answer
  • What is the value of x when 3x &lt; -2x + 15
    15·2 answers
  • Help please hurry !!!!!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!