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
taurus [48]
4 years ago
12

Solve algebraically please URGENT y=5x−7 −6x−4y=−24

Mathematics
1 answer:
Kazeer [188]4 years ago
7 0

\left\{\begin{array}{ccc}y=5x-7\\-6x-4y=-24&\text{divide both sides by (-2)}\end{array}\right\\\left\{\begin{array}{ccc}y=5x-7&(*)\\3x+2y=12&(**)\end{array}\right\\\\\text{substitute }\ (*)\ \text{to}\ (**):\\\\3x+2(5x-7)=12\qquad\text{use distributive property}\\\\3x+(2)(5x)+(2)(-7)=12\\\\3x+10x-14=12\qquad\text{add 14 to both sides}\\\\13x=26\qquad\text{divide oth sides by 13}\\\\\boxed{x=2}\\\\\text{Put the vaalue of x to}\ (*):\\\\y=5(2)-7\\\\y=10-7\\\\\boxed{y=3}\\\\Answer:\ \boxed{x=2\ and\ y=3\to(2,\ 3)}

You might be interested in
1. Find the determinant of A.<br> A.-2<br> B. 29<br> C.2.<br> D. 13
IrinaVladis [17]

Answer:

13

Step-by-step explanation:

To find the determinant you subtract the the leading diagonal from the non-leading diagonal.

(4x-2)-(-7x3)

-8  - -21

NB A negative beside a negative gives you a positive number.

-8+21

=13

7 0
3 years ago
What is the value of x in the equation x + 5.1 = 0
lianna [129]

Answer:

-5.1

Step-by-step explanation:

Subtract 5.1 from both sides.

4 0
3 years ago
Read 2 more answers
What’s this problem
Bezzdna [24]

Answer:

use FOIL- Firsts Outsides Insides Lasts

  1. Multiply the -4 and -3 as they are the first numbers of each brackets -4x-3=12
  2. Next the outsides so -4x6i as they are on the outskirts of each brackets -4x6i= -24i
  3. Insides so 3i and -3 as they are in the centre of the two brackets 3ix-3= -9i
  4. Lasts so 3i and 6i as they are at the end of each bracket 3ix6i=18i^2 ( i squared)
  5. add the answers together - 12+-24i+-9i+18i^2= 12-24i-9i+18i^2
  6. Simplify by adding like terms which is -24i and -9i.
<h3>12+-33i+18i^2 is the answer </h3>

3 0
4 years ago
On a piece of paper graph y ≤ - 2x. Then determine which answer matches the graph you drew ?
nataly862011 [7]

Answer:

hope it helps

Step-by-step explanation:

The given inequality is

The sign of inequality is ≤, it means the points on relation line lie in the solution set.

The related equation of the inequality is

At x=0,

At x=1,

Plot the points (0,0) and (1,-2) on a coordinate plane.

The sign of inequality is ≤, it means we have shade below the line.

The point (-2,4) and (3,-6) are in solution set because,

    (True)

     (True)

Therefore option A is correct.

The points (1,2) and (1,3) are not in the solution set because,

   (False)

  (False)

4 0
3 years ago
10 points pls answer this is due tonight
lilavasa [31]
1.12 2.60 hope this helps if it is wrong then I’m sorry
5 0
3 years ago
Other questions:
  • Is 19/2 rational or irrational
    7·2 answers
  • Solve the equation.
    13·1 answer
  • PLEASE ANSWER ALL I WILL RATE 5 STARS MARK BRAINLIEST AND THANK YOU
    11·1 answer
  • Error analysis- MULTIPLY AND DIVIDE DECIMALS
    10·2 answers
  • Sara and Lane share a 30-ounce box of cereal. By the end of the week, Sara has eaten 1 10 of the box, and Lane has eaten 2 5 of
    13·1 answer
  • Evaluate c - 2 when c = 7.<br> Stuck? Watch a video or use a hint.<br> What is my final answer
    6·1 answer
  • Plllzzz me help quick
    15·2 answers
  • (6×1,000)+(1×100)+(2×10)+(9× 10 1 ​ )+(4× 100 1 ​ )=?
    8·1 answer
  • A farmer is painting a new barn. He will need to calculate the surface area of the barn to purchase the correct amount of paint.
    11·1 answer
  • Please find the area of the unshaded portion in the diagram above​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!