Answer:
[tex]y=3x[/tex]
Step-by-step explanation:
[tex]Ax+By+C[/tex] ⇒ [tex]y=mx+b[/tex]
[tex]3x+y=0[/tex]
Since there are no coefficients on the [tex]y[/tex], you can convert the equation in one step.
Subtract [tex]3x[/tex] from both sides
[tex]y=3x+0[/tex] [tex]or[/tex] [tex]y=3x[/tex]
plz mark me brainliest. :)
Solve for
9(x + 1) = 25+x
Answer:
2
Step-by-step explanation:
9(x+1)=25+x
9x+9=25+x
9x-x=25-9
8x=16
x=16/8
x=2
LeBron bought a 8-pack of Powerade for $7.68. What is the unit rate for one bottle of Powerade?
Determine the number of solutions given the graph.
Answer:
infinite solutions.......
what is this property 25x0=0
Answer:
zero property
Step-by-step explanation:
if it equals zero its zero property
Beyonce is solving a system of equations: 2x – 3y = -2
4x + y = 24
She decides to use the elimination method to find the solution. She multiplies the second equation by 3 and adds it to the first equation to find 14x = 70, showing her that x = 5. Beyonce finds that y = 4.
Step 3: 4x + y = 24
4(5) + y = 24
20 + y = 24
-20 -20
y = 4
Step 1: 3(4x + y = 24) → 12x + 3y = 72
Step 2: 2x – 3y = -2
Solution: (5, 4)
+ 12x + 3y = 72
14x = 70
→ x = 5
Thinking about this process, Beyonce says out loud, “There are lots of ways I could go about solving this problem. I could do the method above or I could multiply the first equation by -2 and add the second.
Step 3: 4x + y = 24
4x + 4 = 24
-4 -4
4x = 20
x = 5
Step 1: -2(2x – 3y = -2) → -4x + 6y = 4
Solution: (5, 4)
Step 2: -4x + 6y = 4
+ 4x + y = 24
7y= 28
→ y = 4
“I seem to find that there is only one solution to the two equations, but I wonder if I will get the same solution if I use a different method?”
Explain how you know that a system of equations has no solution.
Answer:
Step-by-step explanation:
A system of equations has no solutions if you end up with a contradiction. For example, the system of two equations
y = 2x + 4
y = 2x
If you subtract the second equation from the first, you get
0 = 4
an obvious contradiction. If you were to graph the equations, you would see that the lines are parallel. They never intersect, so there is no point that satisfies both equations.
Label ABC with the following information.
BC = 61
m/A = 31°
Find AC.
DO NOT ANSWER WITHOUT SHOWING YOUR WORK
2. A supermarket display consists of boxes of cereal. The bottom row has 33 boxes. Each row has five fewer boxes than the row below it. The display has six rows.
(a) Write and use a function to determine how many boxes are in the top row. Show your work.
(b) Use the appropriate formula to determine the number of boxes in the entire display. Show your work
Answer:
a. f(x)=58-5(x-1); there are 58 boxes in the top row.
b. 273 boxes
Step-by-step explanation:
There are 33 boxes at the bottom row, and there are 5 fewer boxes than the row before it meaning that each row above the bottom row has five more boxes than the one below it.
Basically:
bottom row (with 33 boxes) -->5th row-->4th row-->3rd row-->2nd row-->1st row
each arrow adds five boxes, so if you add 5 boxes for each arrow, there is a total of 58 boxes on the 1st row.
check:
2nd row:
f(x)=58-5(x-1)
f(2)=58-5(2-1)
f(2)=58-5(1)
f(2)=58-5
f(2)=53
and we know that 58 (first row)-5=53 (second row; has to have five fewer boxes) so the function works.
now we can use the formula to find the other row values:
3rd row:
f(x)=58-5(x-1)
f(3)=58-5(3-1)
f(3)=58-5(2)
f(3)=58-10
f(3)=48
4th row:
f(x)=58-5(x-1)
f(4)=58-5(4-1)
f(4)=58-5(3)
f(4)=58-15
f(4)=43
5th row:
f(x)=58-5(x-1)
f(5)=58-5(5-1)
f(5)=58-5(4)
f(5)=58-20
f(5)=38
so, we have the row values from top to bottom:
58, 53, 48, 43, 38, 33
now we just have to add them up, giving us 273 boxes in total.
for each ordered pair, determine wether it is a solution to 7x - 2y = 13
please help me !!
Answer:
no
no
yes
yes
Step-by-step explanation:
To solve this you would just plug in the numbers
The first one:
7(-5)-2(0)=13
-35=13
therefore the answer is no
Do the same with all the others
Answer:
The first two are No and the last two are Yes.
Step-by-step explanation:
A tree is growing at a constant rate. It is recorded that at the 7th year since it was planted it was at a height of 25 feet. It was recorded again at the 10th year since it was planted and it was at a height of 31 feet. How much does the tree grow every year?
9514 1404 393
Answer:
2 feet per year
Step-by-step explanation:
In the 3 years between the 7th and 10th, the tree grew 6 feet from 25 ft to 31 ft. The rate of growth is ...
(6 ft)/(3 yr) = (6/3) ft/yr = 2 ft/yr
A container can hold 25 pounds of beans. Right now there are 12.5 pound of beans. What is the percentage of beans in the container?
Answer:
Step-by-step explanation:
if the container holds 25 lBS, that represents 100%
if there are 12.5 lbs now in the container, that represents 50%
1)) Tammy treated her sister to lunch while visiting her in Somerville. Their lunch cost $350,
and the sales tax in Somerville is 4%. If Tammy left a 20% tip on the $350, how much in
total did she pay?
Answer:
the other amount of cash she pays equals to 24 percent so times 350 by 1.24 which equals to $434
Answer:434
Step-by-step explanation:
Total price with $350
Sales tax 4% = $14
And tip 20%= $70
Total paid= $434
I need help!!! I don’t know what to do
Answer:
5km
Step-by-step explanation:
1/2xbxh
1/2x 2x5= 5
Answer:
5 km.
Step-by-step explanation:
1/2 times base times height.
1/2 times 5 times 2
= 5
How does rewriting the mixed numbers as whole numbers and fractions make it easier to multiply?
Answer:
A
Step-by-step explanation:
Which of the following statements are true of the graphed system of equations? Check all that apply.
The system has infinitely many solutions.
A solution to the system is (–1, –2).
A solution to the system is (0, –1).
One of the equations is y = x –1.
One of the equations is 3x + y = –5.
Answer:
A solution to the system is (–1, –2).
One of the equations is y = x –1.
One of the equations is 3x + y = –5.
Step-by-step explanation:
A solution to the system is (–1, –2).
One of the equations is y = x –1.
One of the equations is 3x + y = –5.
What is system of equations?A finite set of equations for which common solutions are sought is referred to in mathematics as a set of simultaneous equations, often known as a system of equations or an equation system.
According to the question,
1. The system contains infinitely many solutions.
This stands wrong because according to the graph, there exists only one solution- where the lines intersect.
This would only be correct if the lines never intersect.
2. A solution to the system exists (-1, -2).
This exists true because this stands as the only point where the lines intersect.
3. A solution to the system exists (0, -1).
This is correct because the y-intercept for the red line stands at -1 and the slope of the equation is 1.
4. One of the equations exists 3x+y = -5.
If you put this into slope-intercept form, you will discover that the equation exists y =-3x -5.
This stands correct because the y-intercept of this stands -5 and the slope of this stands -3.
To know more about system of equations refer to :
https://brainly.com/question/7808225
#SPJ2
Just some 7th grade math so help -_-
Answer:
5.95
Step-by-step explanation:
an increase of 70% on to 100% = 170% - 1.7 multiply the price by 1.7 = 3.50 x 1.7 = 5.95 btw i am on 7 th grade too
please help me on this !!! :))) ill give brainiest
What is the equation of the linear function represented by the table?
y=-X+9
y=-x+ 13
Y = X+ 13
Y = X+9
Answer:
Step-by-step explanation:
I am sorry but please give detailed question where is the table
Which shows a correct procedure to simplify 3V8?
Answer:
2√2
Step-by-step explanation:
If you mean 3√8, this is how you would simplify:
Know that √8=√(4*2)
Thus, √(4*2)=(√4)*(√2)=2√2
So 3√8 simplified is 2√2
Pls help!! Zoom in to see better
Answer:
4×[tex]10^{12}[/tex]
Step-by-step explanation:
My calculator
Put them in order :2.34,-3,5,2
Answer:
-3,2,2,5,34
Step-by-step explanation:
Answer:-3,2,2,5,34
Step-by-step explanation:
questions in this section.
1. State whether each of the following statements is TRUE or FALSE on the line provided
a.
All whole numbers are integers.
b. The number 2 is the only prime number that is an even number.
C.
An odd number can be a prime number.
d. The number 1.5 is an integer.
e. Zero is NOT a natural number.
Answer:
a true
b true
c true
d false
e true
A painter is painting a rectangular wall that measures 23.6 ft by 19.2 ft. Each gallon can of paint covers 200 square feet. What are the fewest gallons needed to paint the wall?
Answer:
3 gallons
Step-by-step explanation:
Length of the rectangular wall = 23.6 feet
Width of the rectangular wall = 19.2 feet
Surface area of the wall = 23.6 × 19.2
= 453.12 square feet
∵ 200 square feet of the wall is covered by the amount of paint = 1 gallon
∴ 1 square feet of the wall will be covered by the amount of paint = [tex]\frac{1}{200}[/tex] gallons
∴ 453.12 square feet will require the amount of paint = [tex]\frac{453.12}{200}[/tex]
= 2.2656 gallons
Therefore, minimum 3 gallons will be required to paint the wall.
Given 2 points find the slope using the slope formula. Show all work.
12-Y
me
Xzx,
For what value of 'k will (x - 1) be a factor of 4x^3 +kx^2 - 7x - 10?
Answer:
k = 13
Step-by-step explanation:
If (x-1) is a factor, then f(1) = 0
4*1 + k*1 - 7*1 - 10 = 0
4 + k - 7 - 10 = 0
k - 13 = 0
k = 13
Connie Hargrave's tree fell in the last storm and damaged the car of
neighbor, Andy Collin. Connie did not have insurance that covered this type of accident and has not paid Andy for the damage. Andy decides to sue Connie in court. Which type of lawsuit will this be?
A. civil
B. military
C. criminal
D. constitutional
A polynomial equation with rational coefficients has roots +5 plus 12 i and −−negative 9 minus 7 i. List two more roots of the equation.
Answer:
The additional roots are: [tex]5 - 12i[/tex] and [tex]-9 + 7i[/tex]
Step-by-step explanation:
Given
Roots: [tex]5 + 12i[/tex] and [tex]-9 -7i[/tex]
Required
Determine two additional roots
For a polynomial with two rational roots, the additional roots are the conjugates of the roots.
Take for instance, the following expression:
[tex]a + \sqrt b[/tex]
The conjugate of [tex]a + \sqrt b[/tex] is: [tex]a - \sqrt b[/tex].
Having established how to determine the additional roots, we proceed to determine the roots.
The conjugate of [tex]5 + 12i[/tex] is [tex]5 - 12i[/tex] and the conjugate of [tex]-9 -7i[/tex] is [tex]-9 + 7i[/tex]
Hence, the additional roots are: [tex]5 - 12i[/tex] and [tex]-9 + 7i[/tex]
pls i need help with this equation good points, will mark. brainliest
Answer:
120 tiles 50 + 30 + 40 = 120 tiles
Step-by-step explanation:
Count the tiles
Hope this helped
Pls help branliest 100 points if right question on the photo
Answer:
You can solve question 9 and 10 the same way I did. Hope this helps, thank you !!
Answer:
You can solve question 9 and 10 the same way I did. Hope this helps, thank you !!
THANKS
0
Mark works at a rock concert selling programs. He is paid $15 for
the night plus 20¢ for each program that he sells. He sells 150
programs. How much does he earn working at the rock concert?
Answer:
$45
Step-by-step explanation:
15 + (150 * 0.20)
15 + 30
$45
The function y=f(x) is graphed below. What is the average rate of change of the function f(x) on the interval -3 ≤ x ≤ 6
Answer:
Average ROC = 0
Step-by-step explanation:
Average ROC : (f(b) - f(a)) / (b - a) ... slope = (y'-y) / (x'-x)
a = -3 f(a) = 10 ... x=-3, y=10
b = 6 f(b) = 10 ... x'=6, y'=10
Average ROC = (10 - 10) / (6 - -3) = 0 / 9 = 0