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
grin007 [14]
3 years ago
5

Solve the system by substitution. -8x - y = 30 -2y = x

Mathematics
1 answer:
masya89 [10]3 years ago
4 0

Answer:

Solution:  (-4, 2),   x= -4 and  y =2

Step-by-step explanation:

-8x - y = 30

-2y = x

Substitute for x

-8*(-2y)   - y = 30

16y  - y = 30

15y = 30

y = 30/15 = 2

Then  x = -2y = -2*(2) = -4

Solution:  (-4, 2),   x= -4 and  y =2

You might be interested in
Write an equation in slope - intercept form passing through (2,5); slope 3 over 4
Ipatiy [6.2K]
We can use point slope form then convert to slope intercept

point slope
y-y1=m(x-x1)
m=slope
(x1,y1) is a givn point
point is (2,5)
slope is 3/4
y-5=3/4(x-2)
y-5=3/4x-6/2
add 5
y=3/4x-3+5
y=3/4x+2
4 0
3 years ago
2y-1/2(12y-6xy) Helpp!!
nata0808 [166]
-4y+3xy Distributive Property
6 0
3 years ago
Write the following equation in standard form : 8/7x^3 + x^4 + 6x +1
Leokris [45]

Answer:

  x^4 +8/7x^3  + 6x +1

Step-by-step explanation:

8/7x^3 + x^4 + 6x +1

Standard from is from the largest power to the smallest power

  x^4 +8/7x^3  + 6x +1

8 0
3 years ago
----------------------------------------------------------------------------------------<br> 10x10?
a_sh-v [17]
10x10=100
------------------------------------ :))
3 0
3 years ago
Read 2 more answers
A circle with a circumference of 51 inches to find the area
Kaylis [27]

\textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ C=51 \end{cases}\implies 51=2\pi r\implies \boxed{\cfrac{51}{2\pi }=r} \\\\[-0.35em] ~\dotfill\\\\ \textit{area of a circle}\\\\ A=\pi r^2\qquad \implies A=\pi \left( \cfrac{51}{2\pi } \right)^2\implies A=\cfrac{51^2}{2^2\pi }\implies A\approx 206.98

4 0
2 years ago
Other questions:
  • Weather records show that the probability of rainfall in Florida in June is 0.86. What is the probability that it rains there in
    9·2 answers
  • Please give answer to question 1.b with explanation. Will give brainliest if explanation is good
    5·1 answer
  • 9. Find the sum of the first 6 terms of the sequence: –3, 1, 5, 9, . . . options: A) 25 B) 48 C) 42
    10·2 answers
  • Iam stuck on this quiz and I need help!!
    5·1 answer
  • What is the solution to -8 =-(x +4)​
    10·2 answers
  • A buyer pays a deposit to the seller in advance before completing the transaction. which term best defines this?
    10·2 answers
  • What is the value of x?
    15·2 answers
  • Which was a significant provision of the northwest ordinance?
    12·1 answer
  • Work out, giving your answer as a mixed number: 2/3 x 3 3/5
    8·2 answers
  • The circumference of a circle is 11 inches. What is the area, in square inches, of the circle? Express your answer in terms of p
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!