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
zvonat [6]
3 years ago
10

How do you do 4x + 5y =13

Mathematics
2 answers:
DedPeter [7]3 years ago
7 0
You solve for either X or Y, substitute that answer in, and then solve for the other factor. Substitute that in and solve :) Y= -6 X= 10.75
Yuri [45]3 years ago
6 0
Subtract 4x then divide by 5. Then graph it so your equation is y=-4/5x + 2.6
You might be interested in
X^2 + Y^2 +ax + 2y + 3 = 0<br><br> What number is this equation the equation of a circle?
Sav [38]

Answer:

Eq: (x+a/2)²+(y+1)²=(a²-8)/4

Center: O(-a/2, -1)

Radius: r=0.5×sqrt(a²-8)

Mandatory: a>2×sqrt(2)

Step-by-step explanation:

The circle with center in O(xo,yo) and radius r has the equation:

(x-xo)²+(y-yo)²=r²

We have:

x²+y²+ax+2y+3=0

But: x²+ax=x²+2(a/2)x+a²/4-a²/4= (x+a/2)²-a²/4

And

y²+2y+3=y²+2y+1+2=(y+1)²+2

Replacing, we get:

(x+a/2)²-a²/4+(y+1)²+2=0

(x+a/2)²+(y+1)²=a²/4-2=(a²-8)/4

By visual inspection we note that:

- center of circle: O(-a/2, -1)

- radius: r=sqrt((a²-8)/4)=0.5×sqrt(a²-8). This means a²>8 or a>2×sqrt(2)

6 0
3 years ago
Help please its too hard
Varvara68 [4.7K]

Answer:

#6 = 1; #7 = A (5 gallons)

Step-by-step explanation:

#6 it is 1 because you are suppose to divide 10% of 50 which gave yuu $5 and then divide 5 by 20% which is 1

6 0
2 years ago
2. What is the x-value to the solution for the system of equations y = -5x - 9 and y = 2x<br> + 5.
pav-90 [236]

Answer:

The x-value is -2

Step-by-step explanation:

U can substitute any of the equations for y

-5x + (-9) = 2x + 5

-9 = 7x + 5

-14 = 7x

-2 = x

x = 2

7 0
2 years ago
What's 2/8 divided by 5/16 simplified in fraction form?
irga5000 [103]
\frac{2}{8} \div \frac{5}{16} = \frac{2}{8} \times\frac{16}{5} = \frac{1}{4} \times\frac{16}{5} = \frac{4}{5} = 0.8
3 0
3 years ago
Read 2 more answers
What is 75 + 15x ≥ 140
melomori [17]
75+ 15x ≥ 140
⇒ 15x ≥ 140-75
⇒ 15x ≥ 65
⇒ x ≥ 65/15
⇒ x ≥ 13/3
⇒ x ≥ 4 1/3

Final answer: x ≥ 4 1/3~
8 0
3 years ago
Other questions:
  • How to turn 62.5% to a fraction
    9·2 answers
  • Factor completely 4x2 + 16x.
    13·2 answers
  • Use the points A(2,3) abd B (2,-3) to find length
    14·1 answer
  • What times 20 equals 70
    8·1 answer
  • 5) Fill in the missing fact from the fact<br>family.<br>6 x 7=42<br>42÷ 7=6<br>42 ÷6=7<br>?​
    10·1 answer
  • In quadrilateral QRST, m is 68°, m is (3x + 40)°, and m is (5x − 52)°. What are the measures of , , and ? Write the numerical va
    6·2 answers
  • Find the equation of the line passing through the points (2,1) and (5, 10) <br><br>y = 3x + ?
    9·1 answer
  • Convert the measurement as indicated.
    10·2 answers
  • Is (3, 0) a solution to the equation y = 5x + 3? *<br> 1 point
    11·1 answer
  • Use multiplication to solve the proportion.​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!