Answers
Answer:
Step-by-step explanation:
A = B
8x - 10 = 3x + 90
8x - 3x - 10 = 90
5x = 90 + 10
5x = 100
5x/5 = 100/5
x = 20
Related Questions
Thomas earns extra money babysitting. He charges 45.50 for 5 hours and 72.80 for 8 hours. How much will thomas charge for 3 hours.
Answers
You take $45.50 and divide it by 5 to get the charge of one hour then times it by three.
You can also do $72.80 divided by 8 to get the charge of one hour, then times it by 3.
Which of the following is the equation that represents the line in the graph below? A- x=3y, B- x=3, C- y=3, D- y=3x
Answers
Answer:
d
Step-by-step explanation:
y=2x+6, 3y=x-2 solve for unknown variables
Answers
Step: Solvey=2x+6for y:
y=2x+6
Step: Substitute2x+6foryin3y=x−2:
3y=x−2
3(2x+6)=x−2
6x+18=x−2(Simplify both sides of the equation)
6x+18+−x=x−2+−x(Add -x to both sides)
5x+18=−2
5x+18+−18=−2+−18(Add -18 to both sides)
5x=−20
5x/5=−20/5
(Divide both sides by 5)
x=−4
Step: Substitute−4forxiny=2x+6:
y=2x+6
y=(2)(−4)+6
y=−2(Simplify both sides of the equation)
Answer:
x=−4 and y=−2
I hope it helps you
Y=-2
Step by step explanation
Is this true or false? Pls help a dumb person out
Answers
Answer:
false
Step-by-step explanation:
this is showing 2/-3
Answer: False.
Step-by-step explanation:
The slope is the difference in the y coordinates of any two points being divided by the difference between the x coordinates of the same two points.
Using the point, (0,5) and (3,3) find the difference in the y coordinates and divide it by the difference in the x coordinates to find the slope.
y: 5 - 3 = 2
x : 0 - 3 = -3
Slope: -2/3
This is indeed true because line is going downright so the slope has to be negative.
Alyson opened a savings account with $100. She saves $50 per month. Which of the following equations can be used to find how many months it will take to have $600 saved?
Answers
Answer:
y = 50x + 100 this is the equation.
It would take her 10 months, since she already has 100.
Step-by-step explanation:
600 - 100 = 500
500/ 50 = 10
HELPPPP!!!!! MATH!!!! PLZ!!!!!
Answers
Answer:
Y=5x
Step-by-step explanation:
Y=mx+b, or y=rise/run+starting value
as there is no starting value, we would simply add no variable
rise/run in this equation would 5/1 because when it rises 5, it goes right 1, simplifying that would be 5
Answer:
For each x, the y increases by 10 so ur equation will be y= 5x
Step-by-step explanation:
A tanning salon opens with 50 members. Each month the membership increases by 10 members. Write an equation that represents the relationship between the number of months the salon has been opened, x, and the total salon memberships, y?
Answers
Answer:
y= 10x+50
Step-by-step explanation:
x is an increasing variable so, if 10 members are joining each month, x equals 10. 50 is a non increasing number so it has no variable. and y equals all members in total, so y= 10x+50
Two plumbers charge and initial fee and an hourly rate. The equation y = 100 + 30.0 models plumber A's fee, where y is the total charge, in dollars, and x is the number of hours worked. The table shown represents plumber B's total charge for different number of hours. Plumber B Hours Total Charges (5) 105 2 그 160 2 215 Which statement about the plurnbers' charges is true?
Answers
Answer:
I will go with b the total charges
What will the first step look like in a substitution problem?
y=2x
x+y=9
Answers
Answer:
x + 2x = 9
General Formulas and Concepts:
Algebra I
Solving systems of equations using substitution/eliminationStep-by-step explanation:
Since we are using substitution, we must replace one variable in 1 equation as the 2nd equation.
We are given:
y = 2x
x + y = 9
Here we see that y equals 2x. We can go ahead and replace in the 2nd equation y.
x + 2x = 9
And we would solve from there.
f(x) = 9x^3 + 2x^2 - 5x + 4 and g(x) = 5x^3 - 7x + 4
What is f(x) - g(x)? Show all of your steps and write final answer in factored form.
Answers
Step-by-step explanation:
f(x) - g(x)
9x³+2x²-5x+4 - (5x³-7x+4)
9x³+2x²-5x+4 - 5x³+7x-4
4x³+2x²+2x
2x(2x²+x+1)
PLEASE HELP!!!!! 1.) Line a passes through points (-2, 1) and (2, 9). Write an equation in slope intercept form that is parallel to line a. 40POINTS
Answers
Answer:
y=2x
Step-by-step explanation:
compute the slope first-
(-2,1) and (2,9)
m = 9-1/2-(-2) = 8/2+2= 8/4 = 2
knowing the slope take a given point and substitute it's x and y values into the equation to solve for 'b' the y-intercept-
y = mx + b,
1 = 2(-2) + b,
1 = -4+ b,
b = 5
our equation is y = 2x + 5
if you want an equation parallel to the line it has to have the same slope. Take y = 2x
Answer: y=2x+5
Step-by-step explanation:
To find line a in slope-intercept form, we first want to find the slope. The formula for slope is [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex].
[tex]m=\frac{9-1}{2-(-2)} =\frac{8}{4}=2[/tex]
Now that we know the slope, we can plug in any point to find the y-intercept.
y=2x+b [plug in any point]
9=2(2)+b [multiply]
9=4+b [subtract both sides by 4]
b=5
The final equation is y=2x+5.
A diver swims 5.875 feet up to the surface of the water. Which number represents the diver's position in relation to the surface before swimming to the top? -5.9 feet Negative 5 and three-fourthsfeet -58 feet Negative 5 and StartFraction 7 over 8 EndFractionfeet
Answers
Answer:
Negative 5 and 7 over 8Step-by-step explanation:
do NOT listen to the other guy.Answer:
Negative 5 and 7 over 8
Step-by-step explanation:
5.875 look at this: 5 "5".87" 5" || and '5.8"7"5' 7 || over '5."8"75 8', you don't need to write the other five 5.87"5" because it is in the beginning of the number/ whole number "5".875
I subtract 14 from a
certain number. I multiply
the result by 3. The final
answer is 3 What was the
number
Answers
Answer:
x = 15
Step-by-step explanation:
Let the number be x.
(x - 14) x 3 = 3
3x - 42 = 3
3x = 45
x = 15
This is a question on forming and solving an algebraic equation. If you wish to venture further into it/understand this topic better, you may want to follow my Instagram account (learntionary), where I post some of my own notes on certain topics and also some tips that may be useful to you :)
The unknown number could be 15.
What is the fundamental principle of multiplication?If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.
Given; I subtract 14 from a certain number. I multiply the result by 3. The final answer is 3 .
Let the unknown number be x.
(x - 14) x 3 = 3
3x - 42 = 3
3x = 45
x = 15
Hence, the unknown number could be 15.
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If you take a number, multiply it by 3, then add 2, you could represent that phrase with the function:
y=3x + 2. How could you describe this function with words: y=(x+2)/7?*
Answers
Answer: take a number, add 2, and divide it all by 7.
Step-by-step explanation:
Brainliest plz!
Answer:
Yes and for the second one it will be a number plus two and divide both factors by seven
Step-by-step explanation:
Order −0.8, 2 3 , 1, −1 3 from least to greatest.
Answers
Answer:
-13, -1, -0.8, 1, 23
Step-by-step explanation:
Answer:
A or -0.8,-1/3, 2/3, 1
Step-by-step explanation
on edge 2020
Of the 200 students in the school, 79% can play an instrument. How many students cannot play
an instrument?
Answers
What is the formula of area of a quadrant?
Answers
Answer:
that is, pi (π) multiplied by the radius squared (r2). Now, to calculate the area of a quadrant, divide the area of a circle by 4 (as four quadrants make a circle). We get, Area of a quadrant, A= (πr2)/4 Square units.
Jasmine’s grandma gave her $7 to spend at a yogurt stand. The frozen yogurt and toppings cost $0.45 per ounce. She also wants to buy a bottle of water for $2.50. How many x-ounces of yogurt and toppings can Jasmine afford?
Answers
Answer:
Jasmine can afford 10 ounces of yogurt and toppings.
Step-by-step explanation:
$7 - $2.50 bottle of water
= $4.50
$4.50 divided by $0.45
= 10 ounces
HELP ME OUT PLS AND TY
Answers
Answer:
No, the line does not pass (0,0).
No, the line does not pass (0,0)
Brainliest Appreciated!
Answer:
NoNoI hope this helps!
Select all ratios that are in their simplest form.
A 25:24
B 19:24
C 23:24
D 11:16
E 27:18
Answers
Answer:
The ratios in their simplest form are:
A 25:24
B 19:24
C 23:24
D 11:16
Step-by-step explanation:
The ratios are in their simplest form are the ratios that cannot be simplified further.
We will check all the ratios one by one
A 25:24
Cannot be further simplified so it is in the simplest form
B 19:24
Cannot be simplified further.
C 23:24
Cannot be simplified further
D 11:16
Cannot be simplified further
E 27:18
[tex]27:18\\3:2[/tex]
Further simplified, so it was not in simplest form.
Hence,
The ratios in their simplest form are:
A 25:24
B 19:24
C 23:24
D 11:16
1. True False 3(2 + 4) = 3 x 2 + 4
2. True False 6(10 + 5) = 6 x 10 + 6 x 5
3. True False 7(20 + 8) = 7 + 20 x 8
4. True False 4(5 + 10) = 20 + 10 5. True False 2(6 + 11) = 12 + 22
Answers
Answer:
1. False
2. True
3. False
4. True
5. True
Answer:
Step-by-step explanation:
1. Fasle
2. True
3. False
What is the discriminant of 3x^2+5x-1=0
Answers
Answer:
The discriminant is 37
Reflect the point (4, —1) in (a) the x-axis and (b) the y-axis.
Answers
(x=4 stay the same but -1 have to change to negative and if you see it’s already negative so a negative with a negative it’s positive so y=1)
X-axis is (4,1)
When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is transformed into its opposite (its sign is changed).
(So x=4 it’s transformed to the opposite sign x=-4 and the y=-1 reminds the same)
Y-axis is (-4,-1)
Hope this explanation helps you :D
The coordinates of reflected points are:
(a) (4, 1)
(b) (-4, -1)
Use the concept of coordinate points defined as:
A pair of numbers that describe the exact position of a point on a cartesian plane by using horizontal and vertical lines are called the coordinates.
The given points are
(4, -1)
The objective is to find the point of reflection:
(a) Along the X-axis
(b) Along the Y-axis
(a) The reflection along the X-axis,
For the point (4, -1)
x coordinate is 4
y coordinate is -1
Keep the x coordinate the same and take the negative of the y coordinate.
Therefore,
The negative of y coordinate is -(-1) = 1
Hence,
The reflection of the point along x-axis is (4, 1).
(b) The reflection along the Y-axis:
Keep the y coordinate the same and take the negative of the x coordinate.
Therefore,
The negative of x coordinate is -(4) = -4
Hence,
The reflection of the point along y-axis is (-4, -1).
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Please help me with these it’s geometry I’m not very good at this and I so appreciate the help
Answers
Problem 8
The triangles are congruent, which means their corresponding pieces must also be congruent.
angle A = angle Dangle B = angle Eangle C = angle FFocus on the second equation above. We can further say
angle B = angle E
E = B
12x+30 = 50
12x = 50-30
12x = 20
x = 20/12
x = 10/6
----------------
Now move to the equation involving C and F to get
F = C
(y/2) - 10 = 40
y/2 = 40+10
y/2 = 50
y = 2*50
y = 100
----------------
And finally,
D = A
sqrt(z) = 90
z = 90^2
z = 8100
=======================================================
Problem 11
The radius of the circle is r = 5.
The area of the circle is A = pi*r^2 = pi*5^2 = 25pi
The diameter of the circle is 2*r = 2*5 = 10, which is the side length of the square because the circle is fit perfectly inside the square.
Since the square side length is 10, the area is 10^2 = 100
Subtract the two areas: large-small = square - circle = 100 - 25pi
We subtract the areas because we're basically kicking out the circle area when we don't shade it. Think of it like sawing out that portion of a wooden block perhaps.
=======================================================
Problem 19
Part (a)
The point P is directly below the center and it is on the circle.
The location of point P is (18,0) because the x coordinates of both points are the same (so that P is directly below the center) and P resides on the x axis. All points on the x axis have y coordinate 0.
------------------------------
Part (b)
The radius of the circle is r = 10 which is the distance from the center to point P.
The area of the circle is therefore A = pi*r^2 = pi*10^2 = 100pi
Answer: 100pi
If f(x) = 5x - 12, find f(x) when x= - 12
Plz answer
Answers
Answer:
-72
Step-by-step explanation:
first replace x with -12 so 5(-12)-12
then simplify which makes it -60-12
finally solve that which gives you -72
hope this helps :)
Student A spent $9 on a bottle of school glue, a package of colored pencils, and a pencil pouch. Student B
spent $16 on two bottles of school glue, three packages of colored pencils, and a pencil pouch. Student C
spent $17 on a bottle of school glue, two packages of colored pencils, and two pencil pouches.
1. Which augmented matrix best represents the system of linear equations that could be used to
determine the price of each item?
Answers
Answer:
Step-by-step explanation:
...
[tex]\left[\begin{array}{ccc}1&1&1\\2&3&1\\1&2&2\end{array}\right] \left[\begin{array}{ccc}G\\C\\P\end{array}\right] =\left[\begin{array}{ccc}9\\16\\17\end{array}\right][/tex] is augmented matrix best represents the system of linear equations that could be used to determine the price of each item
What is Matrix?a matrix is a rectangular array or table of numbers, symbols, or expressions, arranged in rows and columns, which is used to represent a mathematical object or a property of such an object.
Student A spent $9 on a bottle of school glue, a package of colored pencils, and a pencil pouch.
Let bottle of school glue=G
a package of colored pencils=C
pencil pouch=P
G+C+P=9
Student B
spent $16 on two bottles of school glue, three packages of colored pencils, and a pencil pouch.
2G+3C+P=16
Student C
spent $17 on a bottle of school glue, two packages of colored pencils, and two pencil pouches.
G+2C+2P=17
[tex]\left[\begin{array}{ccc}1&1&1\\2&3&1\\1&2&2\end{array}\right] \left[\begin{array}{ccc}G\\C\\P\end{array}\right] =\left[\begin{array}{ccc}9\\16\\17\end{array}\right][/tex]
is used to determine the price of each item
Hence [tex]\left[\begin{array}{ccc}1&1&1\\2&3&1\\1&2&2\end{array}\right] \left[\begin{array}{ccc}G\\C\\P\end{array}\right] =\left[\begin{array}{ccc}9\\16\\17\end{array}\right][/tex] is augmented matrix best represents the system of linear equations that could be used to determine the price of each item
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FACTORIZE
A(X)=(x+2)^2(-x+2)(2x-1)
Answers
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what is the equation of the line in slope intercept form
Answers
Answer:
y=-4/3x-60
Step-by-step explanation:
Answer:
y=-4/3x-60
Step-by-step explanation:
The line intercepts -60 and the slope by using a slope triangle, for y it was from -20 to 20 so 40 units difference, and for x it was -30 to -60 so 30 unit difference. 40/-30 simplified = -4/3
Determine if the triangles are congruent. If they are, state how you know.
Answers
Answer:
SAS
Step-by-step explanation:
If you flip the first triangle right side up, we can see that they are congruent in the same exact spots. The two sides are congruent, as well as the angle.
Answer:
They are congurrent by SAS criterion. SAS stands for side-angle-side where the angle is in between the 2 lines. In this we can see that 2 lines have been marked as well as the angle in both triangles. SAS is a valid criterion for proving congrurency and therefore these are congurent.
Really hard to explain through typing but hopes this helped
Step-by-step explanation:
The hockey team played 82 regular season
games last year. If they won 44 games, what is
the ratio of wins to losses?
Answers
Answer:
42
Step-by-step explanation:
tou udive them ia, preety sure