solve the system of equations using substitution. Be sure to describe your work.
Answers
Step-by-step explanation:
using substitution, replace y in 3x+y=-12
3x-2x-7=-12
x-7=-12
x=5
y=-10-17
y=-17
x=5
Related Questions
Write an equation of the line with a slope of -2/7 and a y-intercept of 5.
Answers
the formula is y=mx+b
mx is the slope and b is the y-intercept
y=-2/7+5
---
hope it helps
Find the inverse of the function
g(x)=2x+5
algebraically.
Answers
2x + 5 = y
2x = y - 5
x = (y - 5)/2
*Inverse*
g^-1(x) = (x-5)/2
2x squared -11x =-3 need help please
Answers
Exact Form:
X= 11+√97/4,11−√97/4
Decimal Form:
x
=
5.21221445
…
,
0.28778554
…
1 = y / 6
need help!!!
Answers
Answer:
y=6
Step-by-step explanation:
Isolate y by multiplying by 6
1*6=y/6*6
y=6
Check
6/6=1
Step-by-step explanation:
Here's the answer.
1=y/6
1*6=y
6=y
Please follow me if you think it's worth it and message me anytime you have a doubt.
There are 4 tablespoons in 1/4 cup there are 2 cups in 1 pint how many tablespoons are there in 1 pint
Answers
Answer:
32
Step-by-step explanation:
Answer:
i'm not sure if this is the right answer but 1 pint
Step-by-step explanation:
6y+12=24 turn this equation into standard form “y=Mx+b” I WILL MAKR BRAINLIEST!! 17 POINTS!!!!
Answers
Answer:
[tex]y=2[/tex]
Step-by-step explanation:
Standard form is y=mx+b, where m=slope and b=y-intercept
I really hope this helps :-)
[tex]-noorati[/tex]
Mark opens a bank account with $20. He plans to put in $5 each week.
Complete the table below to show the total amount of money Mark has in his bank account from 0 to 10 weeks.
Time
(weeks)
0
1
2
3
4
5
6
7
8
9
10
Money ($)
$20
Answers
Answer:$60 per week
Step-by-step explanation:
120+90+0+30+0+150+30=420
420/7= 60
Plz help
What decimal is equivalent to 21/25
Answers
PLEASE HELPP the problem will be in the picture
Answers
Equation = 17x^5+0x^4+5x^3+4x-7
Simply, Rewrite the equation from greatest power to least. The leading power( ^5) is your degree.
please answer dis question
Answers
Answer:
1
Step-by-step explanation:
A = 4
B = 5
Theres a 1 number diffrence.
(sorry if its wring its 12am im tired-
1. The change in the population of fruit flies can be modeled by the equation f(t) = 3(1.50), where
t is time in days. Which statement describes the change in population of fruit flies?
a. 1.50% decrease daily
c. 50% increase daily
b. 1.50% increase daily
d. 50% decrease daily
Answers
Please help me, its due in a few minutes. There are multiple slides!
Not trying to be picky but please answer all if able to!
Answers
Answer:b
Step-by-step explanation:
Answer:
1- B
2- D
3- ?
4- B
5- ?
should i add, multiply, subtract, or divide n+16=9
Answers
Answer:
subtract
Step-by-step explanation:
16 from 9
n = 9 - 16
n = -7
Please answer AND Explain ASAP. Whoever has the best explanation will get brainiest
I'm trying to understand this!!
Answers
Answer:
eric=12
bill=16
Step-by-step explanation:
you can solve this using two simple algebraic equations. this is the key I will be using:
x=bill
y=Eric
x+y=28
x=y+4
since x is by itself in the second equation, I can replace the x in the first equation with y+4
(y+4)+y=28
subtract 4 from both sides
y+y=24
which is also 2y=24
divide both sides by two.
y=12
so now we know Eric is 12 years old.
using this, we can replace the "y" in the second original equation (x=y+4)
x=12+4
x=16
Bill is 16 years old.
For what value of k does the equation 6(x + 1) + 2 = 3(k5x + 1) + 3 have no solution?
Answers
Answer:
k = (6/15)
Step-by-step explanation:
The equation is:
6*(x + 1) + 2 = 3*(k*5*x + 1) + 3
To have no solutions, we need to have something like:
x + 7 = x + 4
where we can remove x in both sides and end with
7 = 4
So this equation is false, meaning that there is no value of x such that this equation is true, then the equation has no solutions.
First, let's try to simplify our equation:
6*(x + 1) + 2 = 3*(k*5*x + 1) + 3
6*x + 6 + 2 = 3*k*5*x + 3*1 + 3
6*x + 8 = 15*k*x + 6
if 15*k = 6, then the system clerly has no solution.
then:
k = 6/15
then we get:
6*x + 8 = (6/15)*15*x + 6
6*x + 8 = 6*x + 6
8 = 6
The system has no solutions.
Mike went on a vacation to ohio.When he went home the odemeter read 7,219.4 miles.When he returned home the odemeter read 8,192.6 miles.How many miles did mike travel?
Answers
Answer:
973.2 miles
Step-by-step explanation:
miles travelled = miles on the odemeter after the trip - miles on the odemeter before the trip
8192.6 - 7219.4 = 973.2
What is m∠X to the nearest degree?
Answers
Step by step:
Three corners of a city bloc is located at (2,2) (2,-4) (-5,-4) on a coordinate plane what are the coordinates of the fourth corner
Answers
Answer:
(-5, 2)
Step-by-step explanation:
Three corners of a rectangular city block are located at (2,2), (2,-4) and (-5,-4) on a coordinate plane. What are the coordinates of the fourth Coordinate?
Solution:
A rectangle is a quadrilateral (has four sides and four angles) in which opposite sides are equal and parallel. Also, all the angles are at 90 degrees.
Since the city block is rectangular in shape, therefore the fourth coordinate would have the same y coordinate as the point (2, 2) and it would also have the same x coordinate as (-5, -4).
Hence the fourth coordinate is (-5, 2)
A display on the computer shows
that 42 kilobytes have been
downloaded after 7 seconds. At that
rate, how many kilobytes should be
downloaded after 22 seconds?
Answers
Answer: 126.6
Step-by-step explanation:
What is the solution to the system of equations?
O (-2,-8)
O (-1,-5)
O (0, -2)
O (2,4)
Help!!
Answers
“B” is the y-intercept when x = 0. They give this in the table as “-2” so b = -2
Find slope (m) = (-8)-(-2)/(-2)-0 = 3
Equation A is y = 3x - 2 (y = mx + b)
Equation B find “m” and “b”:
Find m = (-9)-(-5)/(-3)-(-1) = 2
To find be, plug in m, x, and y from ANY coordinates in table b into y = mx + b:
-9 = 2(-3) + b
-9 = -6 + b
b = -3
Equation b is y = 2x -3
Use substitution and substitute all of equation “b” for “y” in equation a:
2x - 3 = 3x - 2
Algebra: x = -1
Plug back into equation a:
y = 3(-1) -2
y = -5
x = -1
(-1, -5) final answer (B)
pls help i will give brainliest
Answers
Answer:
28.26
Step-by-step explanation:
A
=
π
r
2
=
π
·
3
2
≈
28.27433
Valerie is performing an experiment by spinning a metal weight around on the end of a nylon thread. How far does the metal weight travel if it completes $$40 revolutions on the end of a $$0.89 m thread? Give your answer correct to one decimal place.
Answers
Answer:
35.6 m
Step-by-step explanation:
Number of revolutions = 40
Length of thread = 0.89 m
Total Distance = Number of revolutions * Length of Thread
Total Distance = 40 * 0.89 = 35.6 m
Please answer by today
Answers
Answer:
y axis
Step-by-step explanation:
the y coordinate changed
A line passes through the point (-3, -9) and has a slope of 2.
Write an equation in slope-intercept form for this line.
Answers
Answer:
y=2x-3
Step-by-step explanation:
y-y1=m(x-x1)
y-(-9)=2(x-(-3))
y+9=2(x+3)
y=2x+6-9
y=2x-3
Complete the equation of the line whose slope is -5/3
and y-intercept is (0, -2).
Answers
Answer:
these are tough, it takes a lot of practice to get used to these, sooo
Step-by-step explanation:
we know the slope, m= -5/3, and we're given a point so use the point slope formula
y= mx + b
the point we are given is in this form (x,y)
then plug the information into our point slope formula
y = (-5/3) x + (-2)
y = -5x/3 -2
Can someone put this equation in standard form for me?
y-3=1/5(x-3)
Standard form : Ax+By=C
Answers
Answer:
-x + 5y = 12
Step-by-step explanation:
Eliminate the fractional coefficient by multiplying both sides by 5:
5y - 15 = x - 3
Combine the constants: 5y = x + 12
Subtract x from both sides: -x + 5y = 12 This is in standard form
Select all the options below that correctly fill in the blank. A ____ is a subcategory of polygon.
A) triangle
B) line segment
C) ray
D) octagon
Select all that apply
Answers
Answer:
triangle is a subcategory of polygon
can someone please help me
Answers
Answer:
i think just 2
Step-by-step explanation:
Answer:
-x²-12x+6 is your answer
PLEASE PLEASE PLEASE HELP!!
Answers
Answer:
B is the answer.
Since 7 and 12 are both the legs of the right triangle, we are going to use pythagorean theorem.
[tex] {7}^{2} + {12}^{2} = {c}^{2} [/tex]
Isolate side c
[tex] \sqrt{ {7}^{2} + {12}^{2} } = c[/tex]
Hello, what do I write on my number line?
Answers
Answer:
1/2,1/2,1/2,1/4,1/4,1/4,3/4,3/4Step-by-step explanation:
I hope it helped!