Answers
Answer:
The answer is b (1,11)
Step-by-step explanation:
You can graph the lines and find the solution that way (which is where the lines intersect)
or you can algebraically solve.
To check this, you can basically plug in the x and y values for the equation and see if they match with what the equation equals..
Example:
10x + 3y = 43
-9x - y = -20
10(1) + 3(11) --> 10 + 33 = 43.. 43 equals 43
-9(1) - (11) = -9 - 111 = -20.. -20 equals -20
(the values match up so it's a solution)
Related Questions
12y=5x-15
4.2y+6.1x=11
Round to the nearest hundredth.
X=
Y=
Answers
Answer:
-15 and 11
Step-by-step explanation:
Given the function: f(x) = 7x + 8.
Find the value of y when x = -6.
Answers
Answer:
-34
Step-by-step explanation:
7x + 8
7(-6)+8
-42+8
-34
Have a beautiful day! v(⌒o⌒)v
f(-6)=7(-6)+8
f(-6)=-34
Refer to the system of linear equations shown below. Which of the following statements gives the best choice for multiplying to solve this system using the elimination method? 3x−6y=4 6x+11y=−2
I NEED IT URGENtLY
Answers
Answer: I just took the test and the answer is Student should show that the solution to the system of equations 7x - y = 4 and 2x - 3y = 1 is the same as the solution to the given system of equations.
Step-by-step explanation:
The solution for the given system of linear equations is (32/69, -10/23).
The given system of equations are 3x-6y=4 and 6x+11y=-2.
What is a linear system of equations?A system of linear equations consists of two or more equations made up of two or more variables such that all equations in the system are considered simultaneously. The solution to a system of linear equations in two variables is any ordered pair that satisfies each equation independently.
Here,
3x-6y=4 ---------(I) and 6x+11y=-2 ---------(II)
Multiply equation (I) by 2, we get
6x-12y=8 ---------(III)
Subtract equation (III) from (II), we get
6x+11y-(6x-12y)=-2-8
⇒ 23y=-10
⇒ y=-10/23
Substitute y=-10/23 in (I), we get
3x-6(-10/23)=4
⇒ 3x+60/23=4
⇒ 3x=4-60/23
⇒ x=32/69
So, solution is (32/69, -10/23)
Therefore, the solution for the given system of linear equations is (32/69, -10/23).
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3.8:(4c+3)=2: 2 2/19
what is c
will give brainiest pls help quick
Answers
Answer:
the answer will be be 0.25 for decimal but for a fraction it would be 1/4
Answer:
0.25 is the answer :D
this is due soon plz help
Answers
Answer:
tre made an error when adding or subtracting. the answer is 05
Simplifying
3.57x + 1.61 = 4.71 + -2.63x
Reorder the terms:
1.61 + 3.57x = 4.71 + -2.63x
Solving
1.61 + 3.57x = 4.71 + -2.63x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '2.63x' to each side of the equation.
1.61 + 3.57x + 2.63x = 4.71 + -2.63x + 2.63x
Combine like terms: 3.57x + 2.63x = 6.2x
1.61 + 6.2x = 4.71 + -2.63x + 2.63x
Combine like terms: -2.63x + 2.63x = 0.00
1.61 + 6.2x = 4.71 + 0.00
1.61 + 6.2x = 4.71
Add '-1.61' to each side of the equation.
1.61 + -1.61 + 6.2x = 4.71 + -1.61
Combine like terms: 1.61 + -1.61 = 0.00
0.00 + 6.2x = 4.71 + -1.61
6.2x = 4.71 + -1.61
Combine like terms: 4.71 + -1.61 = 3.1
6.2x = 3.1
Divide each side by '6.2'.
x = 0.5
Simplifying
x = 0.5
Solve for theta (in degrees)
A = 11 , B = 23
Answers
Answer:
25.559 degrees truncated
Step-by-step explanation:
There are many ways of solving this problem. The way I went about doing it was taking the inverse tangent of 11/23, to get 25.559 degrees.
Determine if ƒ(x) = –x3 – x4 – 9 + 6x is a polynomial function. If it is, state the degree and the leading coefficient. If not, state why.
Answers
Answer:
The given function is a polynomial function.
The degree of the function is 4 and leading co-efficient is -1.
Step-by-step explanation:
Given function is:
ƒ(x) = –x^3 – x^4 – 9 + 6x
Putting the terms in order of their power.
[tex]f(x) = -x^4-x^3+6x-9[/tex]
A polynomial is an algebraic expression which involves only positive integer exponents for the variables.
A polynomial function is of the form:
[tex]p(x) = a_nx_n+a_{n-1}x^{n-1}+a_{n-2}x^{n-2}........ a_0[/tex]
We can see that the function has no negative exponent. So the given function is a polynomial function.
The degree of a polynomial is the highest exponent of variable involved and leading co-efficient is the co-efficient of the variable with highest power.
Hence,
The given function is a polynomial function.
The degree of the function is 4 and leading co-efficient is -1.
At Stop n Shop they are selling fried chicken for $1.95 a pound. If Amiyah buys 13.2 pounds how much will she spend?
Answers
Answer:
Step-by-step explanation:
Price of one pound = 1.95
Price of 13.2 pounds = 13.2 x 1.95 = 25.74
Simplify 4(2x-3) 7th grade math
Answers
Answer:
8x-12
Step-by-step explanation:
Answer:
8x-12Step-by-step explanation:
[tex]4(2x-3)[/tex]
Expand
[tex]4\times 2x = 8x\\\\4\times(-3)=-12\\\\8x-12[/tex]
I dont need the work, just the answers :)
Answers
The answer is square root 117
A triangle has vertices at R(1, 1), S(–2, –4), and T(–3, –3). The triangle is transformed according to the rule R0, 270°. What are the coordinates of S'?
(–4, 2)
(–2, 4)
(2, 4)
(4, –2)
Answers
Answer:
A
Step-by-step explanation:
Answer:
a.
Step-by-step explanation:
Plzzz help its due by 12
Answers
Answer:
THE MAN WHO PUT SOAP IN HIS SOUP SO HE COULD WASH IT DOWN WITH SOMETHING
Step-by-step explanation:
Answer:
me think me made girl mad on brainly
Step-by-step explanation:
HELP ME
solve for X
Answers
Answer:
203/11x
Step-by-explanation: I am soo very sorry gave you the wrong answer before but going over it I see it is 203/11x
A student is trying to find the density of a cube each side of the cube measures 4 cm and the mass is 503.68 g. Calculate the density.
Answers
Answer:
density = mass ÷ volume
v = 4 × 4 ×4 = 64
density = 503 .68 g ÷ 64 cm³
density = 7.87 g/cm³
A line had a slope of -2/3 and passes through the point (-3, 8). what is the equation of the line?
A y=-2/3x+6
B y=-2/3x+8
C y=6x-2/3
D y=8c-2/3
PLS HURRY IM TIMED ON THIS
Answers
Answer:
I think B, but not sure.......
Step-by-step explanation:
solve 4 x 9.4 using distributive property. show your work
Answers
so it basically 36.16
Step-by-step explanation:
4x9=36
4x4=16
36.16
How many of you guys think Into The Night by Bath & Body Works smells like men's cologne?
Answers
Answer:
It smells soooo good, I love it, but sadly i am not allowed to get it XD
Step-by-step explanation:
Answer:
KIND OF BUT THE BEST ONE IS WARM VANILLA SUGAR AND GLOW I THINK AND VELVET SUGAR I HOOKED YOU UP
Step-by-step explanation:
An NBA Basketball Court is a RECTANGLE that is 94 FEET long and 50 FEET wide. What is the AREA of the Court ? What is the PERIMETER of the Court?
Answers
Answer:
perimeter: 288 feet
area: 4700 feet
Step-by-step explanation:
explanation if wanted
Answer:
perimeter: 288 feet
area: 4700 feet
Step-by-step explanation:
If you can’t see it , it says ... Bella Amman is a sales consultant. She travels all over the country selling her company’s products. Her total monthly expenses for June , July, and August were $4,356.01 , $9,011.20 , and $8,780.00 . What was her average monthly expenditure?
A. $7,382.40
B. $6,565.00
C. $8,090.25
D. $22,147.21
Answers
Answer:
A.) $7832.40
Step-by-step explanation:
9,011.20+8,780.00+4,356.01
=22,147.21/3
=7382.40
A bell tower that is 60 yards tall casts a shadow 32 yards long. If a nearby windmill is
45 yards tall, how long will the windmill's shadow be?
Write your answer as a whole number or a decimal. Do not round.
Answers
Answer:
24 yards long
Step-by-step explanation:
60/32 = 45/x
Cross Multiply:
60x = 1440
Divide both sides by 60.
x = 24 yards
please help asap!!!! i’ll mark brainlest
Answers
Answer:
C. 40 kilograms
Step-by-step explanation:
The hardcover version of a book weighs twice as much as its paperback version. The hardcover book and the paperback together weigh 4.2 pounds. Which system of equations can be used to find h, the weight of the hardcover book, and p, the weight of the paperback?
h = p − 4.2
h = 2p
h = 4.2 − p
p = 2h
h = p − 4.2
p = 2h
h = 4.2 − p
h = 2p
Answers
Answer:
the correct option id D.
h = 4.2 − p
h = 2p
The correct equation which can be used to find h, the weight of the hardcover book, and p, the weight of the paperback is,
⇒ h = 2p
⇒ h = 4.2 - p
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The hardcover version of a book weighs twice as much as its paperback version.
And, The hardcover book and the paperback together weigh 4.2 pounds.
Now,
Let the hardcover book weight = h
And, the paperback together weigh = p
Hence. We get;
h + p = 4.2
h = 4.2 - p
And, The hardcover version of a book weighs twice as much as its paperback version.
Hence, We get;
⇒ h = 2p
Thus, The correct equation which can be used to find h, the weight of the hardcover book, and p, the weight of the paperback is,
⇒ h = 2p
⇒ h = 4.2 - p
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Write an equation for the line in the given form.
slope is 5 and (-4, 8) is on the line; point-slope form
Answers
Answer:
Y =5x + 12
Step-by-step explanation:
You start with
y-8=5x(x+4)
y=5x+ 12
Solve each system by graphing or using a table. Check your answers.
2x+y=−1
−x−2y=−4
Answers
Answer:
Step-by-step explanation:
Answer:
The first one: y = 2x - 1
The second one: y = 1/2x + 2
And if the second one is wrong, then it's y = x + 2.
What is 1 2/3 equal to
What is 6 3/4 equal to
What is -9 7/3 equal to
What is 4 2/7 equal too
Answers
Answer:
1 2/3 = 5/3
6 3/4 = 27/4
-9 7/3 = -34/3
4 2/7 = 30/7
Step-by-step explanation:
what is the greatest common factor of 55+35
Answers
Answer:
5
Step-by-step explanation:
The greatest common factor of the expression is 5.
A rectangle has an area of 20 square centimeters. Which of the following could be the rectangle’s length and width?
Answers
Answer:
You did not give any options
Step-by-step explanation:
But 20 and 1 or 4 and 5 or 2 and 10 could possibly be the rectangle's length and width.
All but the first answer choice could be the length and width of a rectangle.
What is the area of the rectangle?The area of the rectangle is the product of the length and width of a given rectangle.
The area of the rectangle = length × Width
A rectangle has an area of 20 square centimeters.
WE know that The area of the rectangle = length × Width
3 cm and 8 cm = 24 cm^2
This cannot be area of the given reactangle.
1 cm and 20 cm = 20 cm^2.
This is the area of the given reactangle.
2 cm and 10 cm => 20 cm^2
This is the area of the given reactangle.
4 cm and 5 cm => 20 cm^2.
This is the area of the given reactangle.
All but the first answer choice could be the length and width of a rectangle.
The complete question is
Which of the following could be the rectangle’s length and width?
1. 3 cm and 8 cm = 24 cm^2
2. 1 cm and 20 cm = 20 cm^2.
3. 2 cm and 10 cm => 20 cm^2
4. 4 cm and 5 cm => 20 cm^2.
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Cost of Apples
1 pound of apple is $1.88
if this is a proportional relationship, write an equation relating the weight of the apples (a) to cost (c). If it is not a proportional relationship?
Answers
Answer:
Before 1845, “states were allowed to hold elections any time they pleased within a 34-day period before the first Wednesday in December.” What was one effect of this election system?
Voters in states with late elections knew the results of early elections.
Farmers were often unable to get to their polling place in time to vote.
The people who voted first could decide the outcome of most elections.
People spent less time in church because they would often travel to vote on Sundays.
Step-by-step explanation:
Write in expanded form.
Answers
Answer:
a²*b² /c*d
Step-by-step explanation:
Find the gradient of the line perpendicular to AB
Find the equation of the line perpendicular to AB and passing through point C
Answers
Answer:
a) 3
b) y=3(x-2)-2
Step-by-step explanation:
a)
Step 1: Find the gradient/slope of AB
[tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]=[tex]\frac{-2-2}{7-(-5)} =\frac{-4}{12} =-\frac{1}{3}[/tex]
Step 2: Find the gradient/slope of the line perpendicular to AB
The slope of the line perpendicular to AB is the reciprocal of the slope of the line AB multiplied by -1, so the slope of the line perpendicular to AB is 3.
b)
Step 1: Find the formula for the equation of a line
If you have a point and the slope, you can use the point-slope form, which is y-y1=m(x-x1).
Step 2: Plug in values to the formula
y-(-2)=3(x-2)
Step 3: Simplify
y+2=3(x-2)
y=3(x-2)-2
[tex]$a)$[/tex] The gradient of a line perpendicular to line [tex]$AB$[/tex] is [tex]$3$[/tex].
[tex]$b)$[/tex] The equation of the line perpendicular to line [tex]$AB$[/tex] and passing through point [tex]$C$[/tex] is [tex]y=-\frac{1}{3}x+\frac{13}{3}[/tex].
What is slope of perpendicular lines?
Lines that are perpendicular lines have slopes that are negative reciprocals.
It is given that the points,
[tex]$A=\left( -5,2 \right)$[/tex]
[tex]$B=\left( 7,-2 \right)$[/tex]
[tex]$C=\left( -2,5 \right)$[/tex]
[tex]$a)$[/tex] We will find the gradient of a line perpendicular to line [tex]$AB$[/tex] by using the slope formula.
So,
By the definition, the slope or gradient of a line describes its steepness, incline, or grade.
[tex]$m=\frac{{{y}_{2}}-{{y}_{1}}}{{{x}_{2}}-{{x}_{1}}}$[/tex] which is equal to [tex]$\tan \left( \theta \right)$[/tex].
Where [tex]$m$[/tex] is the slope and [tex]$\theta $[/tex] is the angle of incline.
So,
Slope [tex]$\left( m \right)=\frac{-2-2}{7-\left( -5 \right)}$[/tex]
[tex]m=\frac{-1}{3}[/tex]
So, The slope of the line perpendicular to [tex]AB[/tex] is the reciprocal of the slope of the line [tex]AB[/tex] which is multiplied by [tex]-1[/tex].
so the slope of the line perpendicular to [tex]AB[/tex] is [tex]3[/tex].
[tex]b)[/tex] We will find the equation of the line perpendicular to [tex]AB[/tex] passing through the point [tex]C[/tex] that is [tex](-2,5)[/tex] by using the formula,
[tex]y=mx+b[/tex]
Here,
[tex]y=5[/tex]
[tex]x=-\frac{1}{3}[/tex]
We will find the [tex]y-[/tex] intercept of the line [tex](b)[/tex] first.
So,
[tex]$5=-\frac{1}{3}\left( -2 \right)+b$[/tex]
[tex]$5=\frac{2}{3}+b$[/tex]
Subtract [tex]\frac{2}{3}[/tex] both side.
So,
[tex]$b=\frac{13}{3}$[/tex]
So, the line perpendicular to [tex]AB[/tex] and passing throught the point [tex]C[/tex] is,
[tex]y=-\frac{1}{3}x+\frac{13}{3}[/tex].
Hence,
[tex]$a)$[/tex] The gradient of a line perpendicular to line [tex]$AB$[/tex] is [tex]$3$[/tex].
[tex]$b)$[/tex] The equation of the line perpendicular to line [tex]$AB$[/tex] and passing through point [tex]$C$[/tex] is [tex]y=-\frac{1}{3}x+\frac{13}{3}[/tex].
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