−4x + y = 6
−5x − y = 21
Answers
add them together
-4x+y=6
-5x-y=21 +
-9x+0y=27
-9x=27
divide by 9
-x=3
multiply -1
x=-3
subsiutte
-4x+y=6
-4(-3)+y=6
12+y=6
subtract 12
y=-6
x=-3
y=-6
the soultion set is in (x,y) form
(-3,-6)
Related Questions
1. Kellie and her sister are training for a marathon. Kellie ran 10 mi in 75 min. Ashley ran 15 mi in 120 min. Which statements are true? Show your work. If a statement is not true, explain why. Show your work. (a) Kellie’s minutes per mile pace was faster than Ashley’s minutes per mile pace. (b) Kellie ran 8 mph. (c) Ashley ran 12 mi in 90 min. (d) Ashley’s total time was 4 min slower than Kellie’s total time after they ran 9 mi.
PLs HElp pls help will mark brainliest!!!!!!
The graph of a proportional relationship contains the point (20, 4).What is the corresponding equation? Enter your answer as a fraction in simplest form in the box. y = x
Two integers, a and b have product of -48 what is the greatest possible sum of a and b.
Answers
I'm sure this is good! :D
Answers
2. Unit rate is expression that has quantity of 1, numerator are often dollars or units like miles, km, meters... and denominator often pounds, kg, gram, liters ... So C is correct answer for your question:)
3. To find total money in the bag, 14 + 6 = 20 coins, there are 6 nickels so the expression is
4. Multiply diagnally 12 × 6 = 72, 72÷ 9 = 8, so the answer is A.
5. Divide 96 to 8 to get cost of 1 ticket, $12 , then multiply it by 3, so the answer is B. $36
Hoped I helped:) GOOD LUCK
divide numerator and denominator by 8
answer is 1/4
answer is C
2. 1 week/7 days
answer is A
3. total coins is 20
6/20= 3/10 are nickels
4. 6/x=9/12
cross multiply
9x= 72
x=8
Answer is A
5. 96/8=12
each ticket cost $12
3 tickets will be $36
Answer is B
Hope this helps
Answers
Answers
STEPS:
First distribute the 5 through the parentheses to get 5q + 135. So the problem now reads 5q + 135 - (-30) = 95.
Now, minus a negative can be changed to plus a positive so - (-30) can be changed to +30 so our equation now reads 5q + 135 + 30 = 95.
Before adding or subtracting anything from both sides of the equation, make sure you simplify the left side as much as possible. Notice that we can add 135 and 30 to get 165 so the left side simplifies to 5q + 165 = 95.
Now we can simply subtract 165 from both sides of the equation to get 5q = -70.
Now simply divide both sides of the equation by 5 to get q = -14.
x² + 3x - 5
Answers
Answer:
plug Plug in a=1, b=3, c=-5
x =[ -3 ±√( +9 -4*1*(-5) ) ]/ 2
x = -3 ±√29 / 2... I hope this is the answer
Step-by-step explanation:
Answers
4.07 4.070 and 4.0700 are equivalent. You can add thousand zeros to 4.07 and its value does not change