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
Vlad1618 [11]
3 years ago
10

−3x + 7y = −16 −9x + 5y = 16 slove this

Mathematics
1 answer:
Ahat [919]3 years ago
5 0


{-3x+7y=-16 ⇒ -3x=-16-7y    (↓)

{-9x+5y=16

The second equation:

-9x+5y=16

3*(-3x)+5y=16         <em>Substitute -3x    (↑)</em>

<em>3* </em>(-16-7y)+5y=16

-48-21y+5y=16      /+48

-16y=64      /:(-16)

y=-4

-3x=-16-7y

-3x=-16-7*(-4)=-16+28=12

-3x=12    /:(-3)

x=-4

<em /><em>Solution: (-4; -4)</em>



You might be interested in
Please help and thank you
zubka84 [21]

Answer:

B

Step-by-step explanation:

The graph of x² is known as the parent function. From it, all quadratics can be transformed to make their graphs. It can undergo a series of transformations like translations up/down/left/right or stretch and compression vertically and horizontally. Usually the equation can tell you you what transformations it undergoes. Since g(x) is the same equation as x² except for 4/5 this is a vertical compression. Since it is the leading coefficient under multiplication and 4/5 < 1, this is a compression vertically. Answer B is correct.

8 0
2 years ago
What is 36x - 8y^2 when x=3 and y=-6?
max2010maxim [7]

Answer:

-180

Step-by-step explanation:

Substitute each number in and get 36(3) - 8(-6)^2

Simplify for -180

3 0
3 years ago
The bakers at healthy BAKERY can make 360 bagels in 10 hours. how many bagels can they bake in 13 hours? what was that rate per
babunello [35]
The rate per hour is equal to the total bagels made divided by the time to make them.
360 ÷ 10 = 36
If for 1 hour they make 36 bagels, for 13 hours they can bake
36 x 13 = 468 bagels.
7 0
3 years ago
Find the slope and the y intercept of the line y=3/2x
Blizzard [7]

Answer:

slope / m = 3/2 & y-intercept =  (0,0)

Step-by-step explanation:

y=mx+b is the formula

m in this equation is 3/2 (y=3/2x)

there's no b because there's no constant so it's (0,0)

6 0
2 years ago
PLEASE HELP PICTURE SHOWN
erik [133]
(-2,3) and (10,3)

Midpoints are quite easy once you know the rule.  The coordinates of the midpoint are just the average of the coordinates of the two points...

The midpoint of this lines is:

((-2+10)/2, (3+3)/2)

(8/2, 6/2)

(4, 3)
7 0
2 years ago
Read 2 more answers
Other questions:
  • Help help help help​
    12·1 answer
  • Hannah has 36 space rocks total. How many more purple rocks Does Hannah have been blue rocks?
    13·1 answer
  • Identify the degree of the polynomial 6xy2 − xy + 8 + 12y.
    13·1 answer
  • The measure of each of the base angles of an isosceles triangle is 9° less than 4 times the measure of the vertex angle. Plz exp
    8·1 answer
  • jenny receives total employee benefits that are 24.5% of her gorss annual pay.if jenny has a gross annual pay of 70,000 how much
    13·1 answer
  • I’ll give thanks to those that help of course. I promise
    12·2 answers
  • -8 3/8+6 1/4 written in simplest form
    13·1 answer
  • A bus leaves Riverside for Springfield and averages only 48 mph. Ten minutes later Smith leaves Riverside for Springfield travel
    6·1 answer
  • Choose the like term of - 3 xy form:<br><br>A. -37<br>B. - 3 y z<br>C. yx<br>C. None of these​
    5·1 answer
  • What is 0.8782894737 nearest TENTH of a percent?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!