Use the substitution method to solve the system of equations.
y=-8x HELP
4x - y = 3
A. (6. - 4
ОВ. (3. - 4
C.
D. (1-2)
Answers
Answer:
D. (1/4, -2)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Algebra I
Solving systems of equations using substitution/eliminationStep-by-step explanation:
Step 1: Define Systems
y = -8x
4x - y = 3
Step 2: Solve for x
Substitution
Substitute in y: 4x - (-8x) = 3Simplify: 4x + 8x = 3Combine like terms: 12x = 3Isolate x: x = 3/12Simplify: x = 1/4Step 3: Solve for y
Define equation: y = -8xSubstitute in x: y = -8(1/4)Multiply: y = -2Related Questions
PLease Help ASAP 6(9-3)/3
Answers
Answer:
12
Step-by-step explanation:
hope this helps
Answer:
12
Step-by-step explanation:
It's right. I checked a lot.
is -12•(-8) negative vaule
Answers
96
Answer:
Yes i think its -96,
if thats what your asking
Find the output, y, when the input x, is 30.
y = 14 – 0.5x
y =
Answers
Answer:
y=-1
Step-by-step explanation:
14-(.5*30) same as dividing 30 by 2
14-15=-1 combine
Answer:
Step-by-step explanation:
Y=1
NEED HELP ASAP WILL GIVE BRAINLIEST
Answers
Answer:
B
Step-by-step explanation:
Set the equation by adding 34 to each side
Use the quadratic formula: x = -b± [tex]\sqrt{b^2-4ac} \\[/tex] over 2*a
1 =a
-10 = b
34 =c
Insert these values into the quadratic formula
I WILL GIVE BRAINLIEST
Answers
Salena has twice as many DVDs as Jolene,and Jolene has one third as many as Brodie.What fraction of the total DVDs has Salena?
Answers
Answer:
let jolene's dvd be x
2x+x+3x= total dvds = 6x
2x/6x=1/3
Salena has 1/3 of the total dvds
Look at the following expression: 5,890 ÷ 65. Where would the quotient fall between?
1. 1 and 10
2. 10 and 100
3. 100 and 1,000
4. 1,000 and 10,000
Answers
Answer:
2. 10 and 100
Step-by-step explanation:
5890/65= 90.6
Answer:
(10) and (100)
Step-by-step explanation:
(5890/65=90.6) worked on plato so Hoped it help :D
Little Joey can finish carpeting ½ of a room in ¼ of an hour. At this rate, how many rooms can he carpet in 1 hour?
Answers
Answer:
2 rooms
Step-by-step explanation:
1/2 divided by 1/4 is 2
2 times 1 = 2
Answer - 2
Can someone plz answer number 10 and 11 don’t worry about number 12
Answers
Answer:
No
Step-by-step explanation:
No. I am not helping because you spam random "answers" to gain points for your account. If you want to be taken seriously, take everyone else seriously.
9514 1404 393
Answer:
10. x = 4
11. x = -5
Step-by-step explanation:
10. Use the perimeter formula. Collect terms, subtract* the constant, divide by the coefficient of the variable.
P = 2(L+W)
42 = 2(5x +(x-3))
21 = 6x -3 . . . . . . divide by 2, collect terms
24 = 6x . . . . . . . . add 3
4 = x . . . . . . . . . . divide by 6
__
11. Collect terms, subtract the constant, divide by the coefficient of the variable.
-8x -3(2x +1) = 67
-8x -6x -3 = 67 . . eliminate parentheses
-14x -3 = 67 . . . . . collect terms
-14x = 70 . . . . . . . add 3
x = -5 . . . . . . . . . . divide by -14
_____
* "Subtract" and "add the opposite" are the same mathematical operation. In both these problems, the constant we want to get rid of is -3, so we add 3 (the opposite of -3). Of course, that operation is done to both sides of the equation.
Construct a circle graph that represents the following data concerning the monthly expenses for a family budget.
Category Percent
Housing 35 %
Food 14%
Clothing 17%
Entertainment 12 %
Auto 22%
Find the central angle for housing. If necessary, round to the nearest tenth.
Answers
Answer:
The circle graph is attached.
Step-by-step explanation:
a) Data and Calculations:
Monthly Expenses for a Family Budget
Expenses Percentage Degree
Housing 35% 130° (360° * 35%)
Food 14% 50° (360° * 14%)
Clothing 17% 60° (360° * 17%)
Entertainment 12% 40° (360° * 12%)
Auto 22% 80° (360° * 22%)
b) The result shows that Housing expense took more than one-third of the circle with auto expenses occupying the next biggest chunk of the circle. Clothing came third to occupy one-sixth of the circle, with food and entertainment trailing behind with less than one-sixth of the circle respectively.
What is 3√243 expressed in simplest radical form?
Answers
Answer:
H is correct
Step-by-step explanation:
(243)^1/3
(3^3 × 3^2)^(1/3)
(3^3)^1/3 × (3^2)^1/3
3×(9)^1/3
A circle has an area of 256 square inches. If the radius of
the circle is multiplied by 4, what will be the area of the new
circle formed?
OA) 890 in.
OB) 1520 in.
OC) 4096 in
OD 5360 in.
Answers
Answer:
Option C (4096π in²)
Step-by-step explanation:
Area of the circle = 256π in²
We know that [tex]Area=\pi r^{2}[/tex] , where r = radius of the circle
So,
[tex]256\pi = \pi r^{2}[/tex]
Cancelling π from both the sides,
[tex]=> r^{2} = 256[/tex]
[tex]=> r = \sqrt{256} = 16[/tex]
The radius of the circle = 16 in.
When the radius is multiplied with 4 , new radius = 16×4 = 64 in.
New Area = [tex]\pi (64)^{2} =4096\pi \: in^{2}[/tex]
Answer: C
Step-by-step explanation:
the school is planning a field trip to the Science Center the tickets are originally $28 but school groups receive and $8 discount on each ticket purchased. the expression t(28-8) represents the total cost for t tickets
Answers
Answer: 28-8 is the discounted price of each ticket, and t(28-8) is equal to/ (=) ----> 24(28-8)
Step-by-step explanation trust me :)
X + 8 = 5; X = ?
6 = X = 2; X = ?
X = 3 = 3; X = ?
X + 10 = 7; X = ?
36 - X = 6; X = ?
14 = X = 2; X = ?
50 = X = 5; X = ?
5X = 10; X = ?
X = 7 = 6; X = ?
X-4 = 2; X = ?
HELPPP
Answers
Answer:
DONT No
Step-by-step explanation:
Please help me with the problem above I’ll give brainliest to whoever is correct thank you!
Answers
Answer:
Explicit formula: y=3x+11
How tall will the plant be after 6 months? 29 inches
Step-by-step explanation:
Since it grows 3 inches per month, the slope would be 3, and since Gianna planted it when it was 11 inches already, the y-intercept would be 11.
plug in 6 for x (for 6 months): 3(6)+11=29
Find the distance between (−8, 4) and (−8, −2). Question 13 options: 8 units 2 units 6 units 10 units
Answers
Answer:
6 units
Step-by-step explanation:
Trust me
Answer:
6 units
Step-by-step explanation:
Find the first six terms of the sequence.
a1 = 4, an = 2 • an-1
Answers
Answer:
p
Step-by-step explanation:
Carissa has $250 in her checking account
Answers
Answer:
c
Step-by-step explanation:
BRAINLIEST
While training for a marathon, you decide to take a run from your home located at point A (0,-3) through the park to Main Street located at (-3,0) and down the road to (1,3). You then decide to take the same route back home. How many miles did you run total
Answers
Select the correct equation for the following sentence : twenty-four is the same as 31.4 times a number plus negative 8.4
A 31.4n + 8.4 = 24
B -8.4n + 31.4 = 24
C 24 = 31.4n + (-8.4)
D 24 - 31.4 = -8.4n
I need help ASAP
Answers
24 = 31.4n + (-8.4) is the correct answer
Step-by-step explanation:
expression 31.4n -8.4 = 24 is the correct equation for the given sentence.
What is an expression?Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation.
Given, twenty-four is the same as 31.4 times a number plus negative 8.4.
Let " n " be the number
From the given data expression will be,
31.4 times a number
=> 31.4 * n
plus negative 8.4
=> 31.4n -8.4
Equals to twenty-four
=> 31.4n -8.4 = 24
Therefore, expression 31.4n -8.4 = 24 is the correct equation for the given sentence.
Learn more about expression here:
https://brainly.com/question/23246712
#SPJ6
Karen has a cube that has a side length of 6 in. The net of the cube is shown.
Answers
Question: What is the surface area of the cube?
Answer:
[tex]Area = 216\ in^2[/tex]
Step-by-step explanation:
Given
[tex]L = 6[/tex] --- length
Required
Determine the surface area
The surface area of a cube is calculated as follows:
[tex]Area = 6L^2[/tex]
Substitute 6 for L
[tex]Area = 6 * 6^2[/tex]
[tex]Area = 6 * 36[/tex]
[tex]Area = 216[/tex]
Hence, the surface area of the cube is [tex]216in^2[/tex]
WILL GIVE BRIANLIEST just need the answers
Answers
Answer:
A. x+y<20
B.x+5y>40
C.(9)+5(9)=51 51>40
9+9=18 18<20
Step-by-step explanation:
Answer:
A. x+y<20
B.x+5y>40
C.(9)+5(9)=51 51>40
9+9=18 18<20
Step-by-step explanation:
Select the correct answer.
The graph shows the number of cases of people developing salmonella symptoms at different
times of a fixed number of days,
According to the graph, when were people most likely to develop salmonella symptoms?
A. February 14, p.m,
B. February 15, p.m
C. February 15, a.m.
D. February 18, a.m.
E. February 18, p.m
Answers
Answer:
February 15 a.m
Step-by-step explanation:
It is the highest bar in the graph
Suppose that G(x) = F(x) -3. Which statement best compares the graph of
G() with the graph of F)?
OA. The graph of G) is the graph of F() shifted 3 units down.
O B. The graph of G) is the graph of F() shifted 3 units to the left.
OC. The graph of G() is the graph of F() shifted 3 units up.
O D. The graph of G() is the graph of F() shifted 3 units to the right.
Answers
Answer:A
We have given that g(x)= F(x) -3.
By the transformation rule p(x) - k is said that function is shifted down k units
helppp plzzzzz. a sum of money put out at compund interest in increased by Rs.180 at the end of first year and by Rs. 188.10 at the end of second year. find out the sum and rate of interest
Answers
9514 1404 393
Answer:
₹172.25 at 4.5%
Step-by-step explanation:
The growth factor is the ratio of the values at the end and beginning of the second year:
multiplier = 188.10/180 = 1.045 = 1 + 4.5%
The amount put out is the amount at the end of the first year, divided by this growth factor.
P = A/(1+r) = 180/1.045 = 172.25
The sum put out is ₹172.25, and the rate of interest is 4.5%.
In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 21% of your total grade, each major test is worth 24%, and the final exam is worth 31%. Compute the weighted average for the following scores: 90 on the lab, 98 on the first major test, 71 on the second major test, and 79 on the final exam.
Answers
Answer:
the weighted score is 82.03
Step-by-step explanation:
The computation of the weighted score is as follows
= Respective scores × respective test or exam and score
= 0.21 × 90 + 0.24 × 71 + 0.24 × 71 + 0.31 × 79
= 18.9 + 21.6 + 17.04 + 24.49
= 82.03
Hence, the weighted score is 82.03
We simply applied the above formula so that the weighted score could be come
HELP I DONT UNDERSTAND UGHHH
Answers
Step-by-step explanation:
So what you need to do is is how fast they traveled every ten miles once you do that take how fast they traveled every ten miles and multiply it by 9.
So it seems to me that 1 day for most people they walked 10 miles. So if it takes 7 days for them to get there you need to do 90 divided by 7 which will get you your answer.
I hope this helped you understand better!
Answer: 11 3/7 miles per day, and it will take them 7.875 days to go 90 miles
Find the rectangular coordinates of (7, 150°)
Answers
Answer:
The coordinates are (-7sqrt(3)/2, 7/2).
Step-by-step explanation:
The rectangular coordinates from polar coordinates is found by:
x = r*cos(theta)
y = r*sin(theta)
Substituting the given values, we get:
x = 7*cos(150 deg) = 7*(-sqrt(3)/2) = -7sqrt(3)/2
y = 7*sin(150 deg) = 7*(1/2) = 7/2
The coordinates are (-7sqrt(3)/2, 7/2).
I hope this helps! :)
rectangular flower bed is 120 in long and 240 in wide how many plants are needed if they are to be spaced 16 in
Answers
Answer:
45 plants
Step-by-step explanation:
Given that:
Length of bed = 120 in
Width of bed = 240 in
Perimeter of a rectangle is given by :
P = 2(length + Width)
Therefore,
P = 2(120 + 240)
Perimeter = 720 inches
If a spacing of 16 inches will be used ; number of plants needed ;
Perimeter / 16
= 720 in / 16 in
= 45
Need help with this question
Answers
Answer:
Option 1: 28 is the correct answer.
Step-by-step explanation:
The given expression for sum is:
[tex]\[ \sum_{n=1}^{4} {2n+2} = 1 \][/tex]
There will be four terms in the sum
We have to find the terms by putting n=1,2,3,4 as n=1 to 4
Putting n=1
[tex]=2(1)+2 = 2+2 = 4[/tex]
Putting n=2
[tex]=2(2)+2 = 4+2 = 6[/tex]
Putting n=3
[tex]=2(3)+2 = 6+2 = 8[/tex]
Putting n=4
[tex]=2(4)+2 = 8+2 = 10[/tex]
So the summation will expand to:
[tex]\[ \sum_{n=1}^{4} {2n+2} = 1 \] = 4+6+8+10 = 28[/tex]
Hence,
Option 1: 28 is the correct answer.