Answer:
x=8
y=4
Step-by-step explanation:
Answer:
Your point would be: (0,2)
x = 0
y = 2
Step-by-step explanation:
This would be the case if you're looking for the point by solving with substitution, or any other methods, of the systems of equations.
In any case, you are looking to find either x or y first.
I will demonstrate with the 'y' value, since it is easier when cancelling out the 'x' value.
2x - y = -2
2x + 4y = 8
(I want to make one of the two equations negative, so that I can eliminate or cancel out the 'x' value(s)).
- (2x - y = -2) --> -2x + y = 2
2x +4y = 8
---------------------------------------
5y = 10
--- ---
5 5
------------
y = 2
(Reason for putting a negative in front of the equation '2x - y = -2' was made in order to eliminate the value(s) '2x' in both equation, and in order to do that, one equation must be negative, while the other is positive, for example:
x + 2y = 6
x + 3y = 5
(You can make any of these equations negative, but only one equation is needed to be negative for the value you want to cancel out,
DO NOT TRY AND CANCEL OUT BOTH X AND Y)
-(x + 2y = 6)
Turn into:
-x - 2y = -6
x + 3y = 5
---------------
y = -1
(Back to the Original Problem)
We now need to find the 'x' value(s):
4(2x - y = -2)
8x - 4y = -8
2x + 4y = 8
----------------
10x = 0
--- ---
10 10
----------------
x = 0
Your final answer will be:
(0,2)
PLEASE HELP ME 10 pts lol
Answer:
-2 83/100 :))))))))))))))
Hi guys, do you know where i can get multi choice maths questions for year 9 ?? thanks guys
find the slope of a line to the line perpendicular to the line containing the points (3,-7) and (4,-3)
Answer:
4
Step-by-step explanation:
m = y2 - y1/x2 - x1
y = -3 - -7 = -3 + 7 = 4
x = 4 - 3 = 1
m = 4/1
answer should be 4... If i am correct hope that helps
A classroom has 4 bookcases that weigh 174 pounds altogether. If they all weigh the same amount, how much does each bookcase weigh?
Answer:
43.5
Step-by-step explanation:
174/4= 43.5
Determine whether each equation represents
proportional relationship. If it does, identify the
constant of proportionality.
a. y = 0.5x - 2
b. y = 1,000x
c. y=x+1
Answer:
b) y = 1,000x
If this incorrect sorry
-5x-18y=-28 and -10x+9y=-11 solve elimination
Answer:
[tex]\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}[/tex]
[tex]x=2,\:y=1[/tex]
Step-by-step explanation:
Given the equations
[tex]-5x-18y=-28[/tex]
[tex]-10x+9y=-11[/tex]
solving the system of the equation by elimination method
[tex]\begin{bmatrix}-5x-18y=-28\\ -10x+9y=-11\end{bmatrix}[/tex]
[tex]\mathrm{Multiply\:}-5x-18y=-28\mathrm{\:by\:}2\:\mathrm{:}\:\quad \:-10x-36y=-56[/tex]
[tex]\begin{bmatrix}-10x-36y=-56\\ -10x+9y=-11\end{bmatrix}[/tex]
[tex]-10x+9y=-11[/tex]
[tex]-[/tex]
[tex]\underline{-10x-36y=-56}[/tex]
[tex]45y=45[/tex]
[tex]\begin{bmatrix}-10x-36y=-56\\ 45y=45\end{bmatrix}[/tex]
solve 45y=5 for y:
[tex]45y=45[/tex]
[tex]\frac{45y}{45}=\frac{45}{45}[/tex]
[tex]y=1[/tex]
[tex]\mathrm{For\:}-10x-36y=-56\mathrm{\:plug\:in\:}y=1[/tex]
solve [tex]-10x-36\cdot \:1=-56[/tex] for x:
[tex]-10x-36\cdot \:1=-56[/tex]
[tex]-10x-36=-56[/tex]
Add 36 to both sides
[tex]-10x-36+36=-56+36[/tex]
[tex]-10x=-20[/tex]
[tex]\frac{-10x}{-10}=\frac{-20}{-10}[/tex]
[tex]x=2[/tex]
[tex]\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}[/tex]
[tex]x=2,\:y=1[/tex]1. Classify the quotient of -35+ -5 as
positive or negative.
Answer:
-40
Step-by-step explanation:
-35+-5
-35-5
=-40
P.S. You said quotient, a quotient is the answer to a division problem.
Hope this helped! :)
Convert 245 yards to inches.
Answer:
8820
Step-by-step explanation:
Answer:
245 yards = 8820 inches
Step-by-step explanation:
multiply the length value by 36
Which equation, when solved, glves 8 for the value of x?
5
7
3
3
OA. 2x+ź= 4x+14
OB. 1-9=34-12
OC 41-2=15-4
OD. *-7= x+14
Reset
Ne
Answer:
C.
Step-by-step explanation:
5/4x-2=3/2x-4
5/4x-3/2x = -4+2
(multiply both sides by 4)
5x-6x=-16+8
-x=-8
(multiply by -1)
x=8
Answer:
C
Step-by-step explanation:
[tex]\frac{5x}{2} +\frac{7}{2} =\frac{3x}{4} +14\[/tex] isolate the terms with the variable x
[tex]\frac{5x}{2} -\frac{3x}{4} =14-\frac{7}{2}[/tex] get the same denominator and combine like terms
[tex]\frac{10x-3x}{4} = \frac{28-7}{2}[/tex] solve
[tex]\frac{7x}{4} =\frac{21}{2}[/tex] crossmultiply and solve for x
[tex]x=\frac{4*21}{7*2} =6[/tex] so is not the first option
try second
[tex]\frac{5x}{4} -9=\frac{3x}{2} -12[/tex] same steps as before
[tex]\frac{5x-6x}{4}=9-12\[/tex]
[tex]\frac{-x}{4} =\frac{-3}{1}[/tex] so x=12 not the second option
try third option
[tex]\frac{5x}{4} -2=\frac{3x}{2} -4[/tex]
[tex]\frac{5x-6x}{4} =2-4[/tex]
[tex]\frac{-x}{4} =\frac{-2}{1}[/tex] so x=8
How much sales tax will be charged at Store B?
Answer:
7 % $94.50(SALES TAX) Question only asks for the SALES TAX THOUGH
Step-by-step explanation:
$1350.00 x .07 =$94.50
$94.50 is your sales tax on B
$1444.50 (total) x 15% gratuity is $1444.50 x .15 = $216.68
$1444.50 + $216.68 =$1661.18
$1661.18 x .02 =$33.22
$1661.18 + $33.22 = $1694.40 Total cost of your computer repair
If F(x) =
2x-3/5
which of the following is the inverse of F(x)?
let the f(x) be x
2x-3/5=y
or,2x-3= 5y
or, x= 2y-3/5
inter changing the relation of x and y
x= 2y-3/5
:. f(x)= 2x-3/5
Step-by-step explanation:
2y-3/5 is the inverse of f(x)
What is the slope of the line that runs through points (-16, -9) and (7, 14)?
Answer:
m = 1
Step-by-step explanation:
rise over run
(y2-y1) / (x2- x1)
(14+9)/(7+16)
23/23 = 1
What are the zeros of this function?
Divide: 2 divided 1/2
2
16
8
4
Answer:
4
Step-by-step explanation:
2 / 1/2. Flip it. 2*2 which is 4
Hope this helps plz mark brainliest if correct :D
Find the gcf for 18 36 81
Answer:
9
Step-by-step explanation:
Factors of 18 : 1,2,3,6,9,18
Factors of 36: 1,2,3,4,6,9...
Factors of 81: 1,3,9...
Please help I am struggling.
Answer:
16in
Step-by-step explanation:
Answer:
15
Step-by-step explanation:
if you add one you get 15, and
Find the unit rate of 1/2 pounds : 5 days
Answer:
I believe the unit rate for this is 0.1 pounds per day
Step-by-step explanation:
you need to divide 1/2 and 5 to get your answer
MAFS.912.G-C0.3.10
If TW = VW = 23, TU = y + 24 and UV = 9y, what is the value of y?
w
(please answer and give me the work) i have until 8 AM
Answer:
y = 3
Step-by-step explanation:
Given that,
TW = VW = 23,
TU = y + 24,
UV = 9y
∆TWU and ∆VWU are congruent by SAS Congruence Theorem.
Therefore:
TU = UV
y + 24 = 9y (substitution)
Subtract y from each side
24 = 9y - y
24 = 8y
Divide both sides by 8
24/8 = 8y/8
3 = y
y = 3
George and five of his friends are taking a trip to new York they decide to split the cost of the tolls equally if the total cost of the tolls is 21 how much would it be
You want to enlarge the picture by a factor of 4 from its current size of 5 inches by 7 inches what is the size of the enlarged picture
Answer:
20 inches by 28 inches
Step-by-step explanation:
The current size of the picture is 5 inches by 7 inches
If we want to enlarge the picture by a factor of 4, the perimeter will also increase by the factor of 4.
New dimension = 4(old dimensions)
= 4(5 inches by 7 inches)
= 20 inches by 28 inches
Hence, the size of the enlarged picture is 20 inches by 28 inches.
PLS hurry You are playing a video game. For each diamond you collect, you earn 125 points. You also earn 200 bonus points by completing the level in less than 2 minutes. You need to earn more than 2700 points to continue on to the next level. Write and solve an inequality that represents the numbers d of diamonds you must collect in less than 2 minutes to advance to the next level.
Answer:
20 diamonds
step-by-step explanation:
2700-200=2500 divided by 125=20
so 20 diamonds
What is the absolute value of the number indicated on the number line below?
A. -2 2/3
B. 2 2/3
C. -2 1/2
D. 2 1/2
Answer:
D, because in between -3 and -2 is -2 1/2, and absolute values are not negative, so the answer is 2 1/2, or D
Answer:
C.
Step-by-step explanation:
Is the point (16,20) on line ℓ?
Answer:
YES
Step-by-step explanation:
Find the equation of the line written as, y = kx. The graph shows a proportional relationship between y and x.
Constant of proportionality/unit rate/slope (k) = rise/run = ⁵/4.
Substitute ⁵/4 in y = kx
We would have:
y = ⁵/4x.
Using the equation of the line, we can know if a given point is on the line by plugging the value of x and y coordinates of the point into the equation. If it makes the equation true, then it is a point on the line. If it doesn't make the equation true, then it isn't a point on the line.
Let's plug in (16, 20) into y = ⁵/4x.
Thus substitute x = 16 and y = 20, we have:
[tex] 20 = \frac{5}{4}(16) [/trex]
[tex] 20 = (5)(4) [/trex]
[tex] 20 = 20 [/trex]
It makes the equation true. Therefore, the point, (16, 20) is a point on line l.
a pharmacist measured 70 mL of medication by difference starting with 100 mL. He noted that the graduate used contained 35 mL of glycerin. Calculate the percentage of error incurred in the measurement.
i dont have time to do it right now but here is the percent error equation!
The length of a rectangle is 6 ft longer than its width.
If the perimeter of the rectangle is 44 ft, find its area.
Answer:
112 ft square
Step-by-step explanation:
Perimeter=2l+2w
l=w+6
Perimeter=2(w+6)+2w
44=2w+12+2w
44=4w+12
32=4w
8=w
l=8+6
l=14
area=lw
area=14x8
area=112 ft square
It took Scott an hour more than twice as long as Kim to complete his homework. Which expression shows the time it took for Scott to complete his homework in comparison to Kim
Answer:
2x + 1 = y
Step-by-step explanation:
x = Kim
y = Scott's time.
How long would it take the two trains to meet?
Answer: 2.5 hours.
Step-by-step explanation:
help plsplspls !! :)
Answer:
I want to say it's -69/100
Step-by-step explanation:
Hope that helps!
In the diagram, ABCD is a parallelogram. The
diagonals of the parallelogram intersect at point T.
HELP
Answer:
A. 100 degrees
Step-by-step explanation:
Given:
[tex] m\angle ABC = 3y + 5 [/tex]
[tex] m\angle ADC = 5y - 45 [/tex]
Required:
[tex] m\angle BCD [/tex]
SOLUTION:
✍️First, create an equation that you will use to find the value of y.
[tex] m\angle ABC = m\angle ADC [/tex] (opposite angles of a parallelogram are congruent to each other)
[tex] 3y + 5 = 5y - 45 [/tex] (substitution)
Collect like terms
[tex] 3y - 5y = -5 - 45 [/tex]
[tex] -2y = -50 [/tex]
Divide both sides by -2
[tex] y = 25 [/tex]
✍️Next, find [tex] m\angle ABC [/tex] and [tex] m\angle ADC [/tex].
[tex] m\angle ABC = 3y + 5 [/tex]
Plug in the value of y
[tex] m\angle ABC = 3(25) + 5 = 75 + 5 = 80 [/tex]
[tex] m\angle ADC = 5y - 45 [/tex]
Plug in the value of y
[tex] m\angle ADC = 5(25) - 45 = 125 - 45 = 80 [/tex]
✍️Next, find [tex] m\angle BCD [/tex].
[tex] m\angle BCD + m\angle ADC = 180 [/tex] (consecutive angles in a parallelogram are supplementary)
[tex] m\angle BCD + 80 = 180 [/tex] (substitution)
Subtract 80 from each side
[tex] m\angle BCD = 180 - 80 [/tex]
✅[tex] m\angle BCD = 100 [/tex]
Ther are 5,290 students at Highline College. If each college classroom holds 50 students, how
many classrooms are needed at Highline College. This is an Order of operation question btw
