what is the solution to this system of equations
A. (4,2)
B. (8,4)
C. (4,8)
D. (2,4)
Answer:
B. (8,4)
Step-by-step explanation:
To find the solution of the system, look at where the lines intersect. The intersecting point is (8,4). The solution to the system of equations is (8,4).
Answer:
B. (8,4)
Step-by-step explanation:
We want to find when these two equations are equal. The long way is to actually solve them using elimination or substitution of the equations. But, we can see an easier and clever way to solve them.
There is one specific time when equations are equal and that is when their lines intersect or cross, notice the graph and where they intersect. That specific coordinate where they intersect is your answer, (8, 4)!
you will get brainlyest if you do this
16x^0+5x^2*y-1= plz help now
Answer:
=5x^2y+15
Step-by-step explanation:
16x^0+5x^2*y-1=
16x0+5x2y−1
Combine Like Terms:
16+5x2y+−1
=(5x2y)+(16+−1)
=5x^2y+15
Hope this helps!!! If you ever need more help just ask in the comments or somewhere.
Please please help! Will mark brainliest!
Answer:
-
Step-by-step explanation:
A TV has an original price of $549. Enter the new price after the given percent of
change. 30% decrease
Answer:
384.3
Step-by-step explanation:
In a standard 52-card deck, half of the cards are red and half are black. The 52 cards are divided evenly into 4 suits: spades, hearts, diamonds, and clubs. Each suit has three face cards (jack, queen, king), and an ace. Each suit also has 9 cards numbered from 2 to 10. 7.
Dawn draws 1 card, replaces it, and draws another card. Is it more likely that she draws 2 red cards or 2 face cards?
Answer:
It is more likely she draws 2 red cards
Step-by-step explanation:
Given that:
Number of red d cards in deck = 26
Number of face cards = 4 * 3 = 12 face cards
If two cards are drawn with replacement ;
Probability = (required outcome / Total possible outcomes)
P(1st card red) = 26 /52) = 1/2
P(2nd card red) = 26 /52 = 1/2
P(1st card red) * P(2nd card red)
1/2 * 1/2 = 1/4 = 0.25
P(1st card face card) = 12/52 = 3/13
P(2nd card, face card) = 12/52 = 3/13
P(1st card face card) * P(2nd card face card)
3/13 * 3 /13 = 9/169 = 0.053
0.25 > 0.053
It is more likely she draws 2 red cards
Michael read 135 pages in 90 minutes. Select all of the rates that have the same constant rate of change as Michael's rate. 180 pages in 2 hours 180 pages in 2 , hours 60 pages in 30 minutes 60 pages in 30 , minutes 108 pages in 212 hours 108 pages in 21 half , hours 150 pages in 1 hour 150 pages in 1 , hour 225 pages in 150 minutes 225 pages in 150, minutes 210 pages in 2 hour 20 minutes
Answer:
180 pages in 2 hours
225 pages in 150 minutes
210 pages in 2 hours 20 minutes
Step-by-step explanation:
135 pages : 90 minutes
= 135/90
= 3/2
= 3 : 2
180 pages : 2 hours
180 pages : 120 minutes
= 180/120
= 3/2
= 3:2
60 pages : 30 minutes
= 60/30
= 2/1
= 2:1
108 pages : 2 1/2 hours
108 pages : 180 minutes
= 108/180
= 18/30
= 3/5
= 3:5
150 pages : 1 hour
150 : 60
= 150/60
= 10/6
= 5/3
= 5:3
225 pages : 150 minutes
= 225/150
= 9/6
= 3/2
= 3:2
210 pages : 2 hours 20 minutes
210 pages : 140 minutes
= 210/140
= 3/2
= 3:2
Can anyone please help me solve this??
Answer:
X=4 Y= -5
Step-by-step explanation:
Please help! I think I know the answer but I don't trust myself xD (Theres a screenshot attached)
Answer:
the second one
Step-by-step explanation:
There are 12 more boys than girls in the cafeteria. If there
are 22 people all together, how many boys are there?
A jar has 2 pennies, 5 nickels, 3 dimes, and 2 quarters. What is the probability of drawing a penny,
replacing it, and drawing another penny?
There is a 2 in 12 chance of drawing a penny
Step-by-step explanation:
Answer: 2/12
Step-by-step explanation:
There are 12 coins all together, and 2 pennies which means there is a 2/12 chance to draw a penny. Then they replace the penny and draw another time, so by replacing the penny the probability doesn't change and there is still a 2/12 chance of drawing a penny.
Determine the solution to the system of equations.
3x - y = 9
2x - y = 6
Answer:
(3, 0)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtract Property of EqualityAlgebra I
Solving systems of equations using substitution/eliminationSolving systems of equations by graphingTerms/CoefficientsStep-by-step explanation:
Step 1: Define Systems
3x - y = 9
2x - y = 6
Step 2: Rewrite Systems
2x - y = 6
Subtract 2x on both sides: -y = 6 - 2xDivide -1 on both sides: y = 2x - 6Step 3: Redefine Systems
3x - y = 9
y = 2x - 6
Step 4: Solve for x
Substitution
Substitute in y: 3x - (2x - 6) = 9Distribute -1: 3x - 2x + 6 = 9Combine like terms: x + 6 = 9Isolate x: x = 3Step 5: Solve for y
Define equation: 2x - y = 6Substitute in x: 2(3) - y = 6Multiply: 6 - y = 6Isolate y term: -y = 0Isolate y: y = 0Step 6: Check
Graph the systems to verify the solution set (3, 0) is the solution.
The solution set to the systems would be where the 2 lines intersect.
We see that the intersection point is x-intercept (3, 0).
∴ (3, 0) is the solution set to the systems of equations.
isolate and solve for y
Step-by-step explanation:
subtract y from both sides than divide the x values from bothe sides
85 out of 350 books in the library are about Mysteries.
What percent of the books are Mystery books?
Answer:
nearly 24%
Step-by-step explanation:
85=350×a/100
85=3.5a
a=85/3.5
nearly 24%
How do I solve this equation and find the vertex, axis of symmetry, y intercept and the domain and range?
Answer & Step by Step :
The vertex is (2, -11)
The axis of symmetry is x=2
The y-intercept is (0, 1)
The Domain and Range are in the picture
stuff that WILL HELP YOU STUDYING AND CHECKING YOUR WORK (I PROMISE)
I used these to find your answer quickly^^^
Be sure to actually know the material because I promis you, you WILL see these again on countless amounts of tests
- search m-a-t-h-w-a-y
- search: d-e-s-m-o-s
(brainly won't let me type them out by don't add these '-' when searching them up)
y=−2x+4 Complete the missing value in the solution to the equation. ( −2) Need it quick no explanation need.
Answer:
1 is missing value..... .....
Can someone help me with this question. Will mark brainliest.
Answer:
Choice 2
Step-by-step explanation:
Ask a friend or older sibling, they always have the answer (Not really)
what does b equal. 2/3b +19=35
2/3b + 19 = 35
-19 -19
----------------------
2/3b = 16
÷2/3 ÷2/3
----------------------
b = 24
PLEASE ANSWER QUICK!!! The volume of ammonia in a balloon is now 6.1 L after changing the temperature from 52 °C to 79 °C. What was the original volume?
Answer:
the original volume is 4.0L
Step-by-step explanation:
Step one:
given data
V1= ?
T1= 52 °C
V2= 6.1L
T2= 79° C
Step two
applying the volume temperature relationship, which is
V1/T1= V2/T2
substituting we have
V1/52= 6.1/79
cross multiply we have
52*6.1= V1*79
317.2= 79V1
divide both sides by 79
V1= 317.2/79
V1=4.0L
100 POINTS AND BRAINLIEST
two paintings were sold were for $50 and $350. find the mean and the median
Mean :
Median:
At a gallery show, three paintings were sold for $250, $400, and $1,200.
Mean :
Median:
oil paintings have been sold for $410, $400, and $375.
Mean :
Median:
YOUR ANSWER WILL BE REPORTED IF YOU PUT NONSENSE
Answer:
Here, for example, is square inch pricing, using a multiplier of 2.5 (ie, $2.50 per square inch):
4×4 inches = 16 square inches x 2.5 = $40
8×8 inches = 64 square inches x 2.5 = $160
16×16 inches = 256 square inches x 2.5 = $640
24×24 inches = 576 square inches x 2.5 = $1,440
32×32 inches = 1,024 square inches x 2.5 = $2,560
I don’t know about you, but $40 seems awfully small price for a painting by someone who commands $2,560 for a 32×32 canvas.
Here are the same canvas sizes using linear inch pricing, using a multiplier of 20 (ie, $20.00 per linear inch) — as you can see, the difference in price feels a lot less out-of whack:
4+4 inches = 8 linear inches x 20 = $160
8+8 inches = 16 linear inches x 20 = $320
16+16 inches = 32 linear inches x 20 = $640
24+24 inches = 48 linear inches x 20 = $960
32+32 inches = 64 linear inches x 20 = $1,280
Neither of these pricing methods is “right” or “wrong,” but once you determine your method and your multiplier, charging by size can be a very helpful way to eliminate the guesswork, and feel confident about your pricing.
Different Pricing for Different Media?
One possible modifier to your size-based pricing structure is the media you paint with. If you only paint watercolors, or only paint oils, there’s no problem, but if you paint both on canvas and on paper, as I do, it gets a little tricky.
For whatever reason, paintings on paper tend to sell for less than paintings on canvas — even though they require framing, which is an added expense. In my case, if I were to pay to have a piece framed, my costs become much higher for a work on paper than for a canvas painting! What’s an artist to do?
(And remember that pricing your prints is an entirely different topic.)
I don’t have a final answer to this question, except to refer you to the item below…
Step-by-step explanation:
Answer:
Here, for example, is square inch pricing, using a multiplier of 2.5 (ie, $2.50 per square inch):
4×4 inches = 16 square inches x 2.5 = $40
8×8 inches = 64 square inches x 2.5 = $160
16×16 inches = 256 square inches x 2.5 = $640
24×24 inches = 576 square inches x 2.5 = $1,440
32×32 inches = 1,024 square inches x 2.5 = $2,560
I don’t know about you, but $40 seems awfully small price for a painting by someone who commands $2,560 for a 32×32 canvas.
Here are the same canvas sizes using linear inch pricing, using a multiplier of 20 (ie, $20.00 per linear inch) — as you can see, the difference in price feels a lot less out-of whack:
4+4 inches = 8 linear inches x 20 = $160
8+8 inches = 16 linear inches x 20 = $320
16+16 inches = 32 linear inches x 20 = $640
24+24 inches = 48 linear inches x 20 = $960
32+32 inches = 64 linear inches x 20 = $1,280
Neither of these pricing methods is “right” or “wrong,” but once you determine your method and your multiplier, charging by size can be a very helpful way to eliminate the guesswork, and feel confident about your pricing.
Different Pricing for Different Media?
One possible modifier to your size-based pricing structure is the media you paint with. If you only paint watercolors, or only paint oils, there’s no problem, but if you paint both on canvas and on paper, as I do, it gets a little tricky.
For whatever reason, paintings on paper tend to sell for less than paintings on canvas — even though they require framing, which is an added expense. In my case, if I were to pay to have a piece framed, my costs become much higher for a work on paper than for a canvas painting! What’s an artist to do?
(And remember that pricing your prints is an entirely different topic.)
I don’t have a final answer to this question, except to refer you to the item below…
Step-by-step explanation:
please help!
Solve this system of linear equations using linear combination/elimination.
Madeline has 19 coins in her backpack. Some are nickels and some are quarters. The total value of the coins is $2.15. How many nickels and quarters does she have?
Answer:
8 quaters 3 nickels
Step-by-step explanation:
Determine the value b
Answer:
17
Step-by-step explanation:
6x7= 42
42 divided by 2 = 21
21 - 4 = 17
answer = 17
(3) Find the value of x.
Answer:
x=4
Step-by-step explanation:
since triangles are proportional by 2:1, then:
16/2=3x-4
8=3x-4
3x=12
x=4
Which value from the set {0,1,17,72} makes the equation n + 8 = 9 true?
answer: 1
step-by-step explanation: n + 8 = 9
therefore 9-8 = 1
The solution to the equation n+ 8 = 9 is 1 from the set {0,1,17,72} n = 1 satisfy the provided equation.
What is a function?It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.
We have a linear function in terms of n:
n + 8 = 9
Subtract 8 both side:
n + 8 – 8 = 9 – 8
n = 1
From the set, we can see the element 1 is the solution to the given equation.
Thus, the solution to the equation n+ 8 = 9 is 1 from the set {0,1,17,72} n = 1 satisfy the provided equation.
Learn more about the function here:
brainly.com/question/5245372
#SPJ2
Which polynomial represents the algebra tile configuration shown?
x2 + 3x + 4
x2 + 3x −
−x2 − 7
−x2 + 3x − 4
Answer: I’m pretty sure the answer is D. −x^2 + 3x − 4
Step-by-step explanation:
Answer:-x^2 + 3x - 4
Step-by-step explanation:
Find the slope of a line that passes through (4, 1) and (6, 5).
plssss show your work thx plssss
Answer:
Slope = 2
Step-by-step explanation:
Answer:
is this what youre looking for ?
Step-by-step explanation:
Input Data :
Point A ( x A , y A ) = (3, 2)
Point B ( x B , y B ) = (7, 10)
Objective : Find the slope of a line that passes through points A and B.
Formula : Slope m = y B − y A /x B − x A
Solution: Slope m = 10 − 2 /7 − 3 = 8 4
m = 2
Pls help it due in a hour
Answer:
The coordinates of the Midpoint of AB will be: (1/2, 5)
Step-by-step explanation:
Given the points
A(-2, 6)B(3, 4)Finding the midpoint between (-2, 6) and (3, 4)
[tex]\mathrm{Midpoint\:of\:}\left(x_1,\:y_1\right),\:\left(x_2,\:y_2\right):\quad \left(\frac{x_2+x_1}{2},\:\:\frac{y_2+y_1}{2}\right)[/tex]
[tex]\left(x_1,\:y_1\right)=\left(-2,\:6\right),\:\left(x_2,\:y_2\right)=\left(3,\:4\right)[/tex]
[tex]M.P=\left(\frac{3-2}{2},\:\frac{4+6}{2}\right)[/tex]
[tex]=\left(\frac{1}{2},\:5\right)[/tex]
Therefore, the coordinates of the Midpoint of AB will be: (1/2, 5)
Select all of the equivalent for:
2(x+10)
Helppppp pls
Answer: c
Step-by-step explanation:
Write the coordinates of the vertices after a dilation with a scale factor of 5, centered at the origin.
Q (-2, -1)
Q' (___,___)
Answer:
Q' (-10, -5)
Step-by-step explanation:
Multiply each coordinate by the scale factor.
-2 · 5 = -10
-1 · 5 = -5
Therefore, Q' (-10, -5).
Maribel sold 20% of the cupcakes she made. If she sold 35 cupcakes, then she made how many
cupcakes in all.
Answer:
20% x 5= 100%
35 x 5= 175
she has a total of 175 cupcakes
3. Which number is a factor of 18. but not a multiple of 2? (10 Points)
Answer:
Three or nine
Step-by-step explanation:
PLEASE HELP ME
Will mark brainliest
Answer: Its the last one trust me
Step-by-step explanation: