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
Vedmedyk [2.9K]
3 years ago
7

Please Help Fast!!! 20 points Solve the system of equations: 25−x=−4y 3x−2y=30

Mathematics
1 answer:
gogolik [260]3 years ago
6 0

Answer:

(7, -4.5)

Step-by-step explanation:

25−x=−4y  ---> x=25+4y

3x−2y=30

use x to substitute into the second equation

3 (25+4y)-2y = 30

75+12y-2y=30

75+10y=30

10y=-45

y=-4.5

3x-2(-4.5)=30

3x+9=30

3x=21

x=7

check:

25-7=-4*-4.5

18=18 (yes)

3*7-2*-4.5=30

21+9=30

30=30 (yes)

You might be interested in
How do i explain 5×23×2
Zarrin [17]

Answer:

Step-by-step explanation:

Jsjxjxkd jfjfjfel

6 0
3 years ago
Can anyone please answer number 6.
xeze [42]

Answer:

Step-by-step explanation:

Exact Form:

2

√

2

+

3

√

5

−

2

2

2

+

3

5

-

2

Decimal Form:

7.53663105

…

7 0
2 years ago
Read 2 more answers
On a coordinate plane, a parabola opens up. It goes through (negative 1, 0), has a vertex at (1, negative 4), and goes through (
Murrr4er [49]

Answer:

All real values of x where x < −1.

Step-by-step explanation:

There is a turning point at x= 1 and f(x) = -4 and it open upwards.

So it decreases for all real values of x  where x < 1. But it passes through the point (-1,  0) after which the values of the function become negative.

So the answer is all real values where x < -1.

4 0
3 years ago
Read 2 more answers
What is 3 1/4 in cups as a whole number or mixed number in simplest form?
Alex17521 [72]

Answer:

3/4 = 34 = 0.75.

Step-by-step explanation:

7 0
3 years ago
Plz help me with this and who likes the dobre brothers
son4ous [18]
Maria<span> may have been </span>formed<span> by ancient volcanic eruptions that filled in low lying areas of the moon with darker basalt. </span>Craters<span> are impact zones where large to small meteors have impacted the moon's surface but did not puncture the lunar mantel.</span>
7 0
3 years ago
Other questions:
  • A professional hockey goal is 6 feet
    12·1 answer
  • Solve for g: 2g-3h=13
    6·1 answer
  • Find the equation of the line passing through the points (8,-16) and (1,5)
    5·2 answers
  • (07.01 MC) Find the cosine ratio of angle Θ. Hint: Use the slash symbol ( / ) to represent the fraction bar, and enter the fract
    7·2 answers
  • 5. Kendra is making a histogram for the data
    15·1 answer
  • 5. How many solution/s do linear inequality in two variable have?
    14·2 answers
  • X/-9 =3<br>I dont understand this.​
    7·2 answers
  • Which figure appears to show a line with a slope of 1?​
    7·2 answers
  • Assume that a simple random sample has been selected and test the given claim.Claim: The average age of actresses when they win
    12·1 answer
  • To visit the top of the Empire State Building, a ticket cost $ 4.00 in 1999. In 2009, the price rose to $ 20.00. What was the pe
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!