I know it’s a lot but I’m pretty stupid and could use help online class ain’t easy when you’re internet sucks thanks!
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Problem 5
There are 2 answers and they are choice B and choice C
We can tell by looking at the factors. For something like choice B, the factor (x+6) shows up twice, so that means x = -6 is a double root. Something like choice A has roots x = -6 and x = 6 which aren't the same.
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Problem 6
Ted is correct. He set each factor equal to 0 and solved each equation that resulted from doing so.
Note how 3x-2 = 0 turns into 3x = 2 after adding 2 to both sides. Then he divided both sides by 3 to get x = 2/3. That's the first solution. The second solution x = -5 results from solving x+5 = 0. You subtract 5 from both sides.
To fix Maggie's mistake, you just need to correct her steps to mirror Ted's steps.
Related Questions
0.11 in expanded form
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Answer:
1.1
Step-by-step explanation:
As we move left, we multiply by 10 to obtain the new place value.
a carpenter has a wooden dowel that is 96 cm long. she wants to cut it into two pieces so that one piece is 5 times as long as the other. what is the length of the longer piece?
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Answer:
30 cmStep-by-step explanation:
In this problem (word problem), we are examined on how to express equations from words.
let us initialize some variables
let the length of the first piece (the short piece) be x
and that of the second(the longer piece) be 5x
given that the total length is 96 cm
Also from the problem statement, the total length can be expressed as
5x+x= 96
6x= 96
divide both sides by 6 to solve for x
x= 96/6
x= 16
now the longer side = 5x
the longer side= 5*6
the longer side = 30 cm
Megan bought 3 pounds of apples that cost x dollars per pound. She gave the cashier a 20-dollar bill.
Which equation could Megan use to find the amount of change, y, she should receive?
A. y = 20-3
O B. y = 20 - 3
) C. y = 20 x
D. y = 20 - 3x
Ey = 3x - 20
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Answer:
3x-20
Step-by-step explanation:
I had this test yesterday and this was the correct answer
The equation D. y = 20 - 3x Megan use to find the amount of change.
What is an equation ?An equation is is a tool that expresses two equality of two given expressions.
According to the given question Megan bought 3 pounds of apples that cost x dollars per pound. She gave the cashier a 20-dollar bill.
Let y denotes the change she received.
If 1 pound of apple cost x dollars then 3 pounds of apples will cos 3×x = 3x dollars.
∴ y = 20 - 3x.
learn more about equations here :
https://brainly.com/question/13795677
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The angle measures of a triangle are shown in the diagram.
50
(2x)
(3x - 100
What is the value of x?
O A. 25
B. 20
10
OD. 28
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Answer:
The answer will be B. 20
Step-by-step explanation:
If Qr=58 and pq=13 find pr
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Answer:
PR=71
Step-by-step explanation:
visualize:
P Q R
O-------------O-------------O
13 58
so if PQ + QR = PR, than 13+58=PR
13+58=71
PR=71
The value of the segment PR will be 71.
What is a line segment?A line segment in geometry is a section of a line that has two clearly defined endpoints and contains every point on the line that lies within its confines.
Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Given that the value of the segment Qr=58 and pq=13. The value of segment PR will be calculated as below:-
PR = QR + PQ
PR = 13 + 58
PR = 71
Therefore, the value of the segment PR will be 71.
To know more about a line segment follow
https://brainly.com/question/18315903
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13 If B is the midpoint of AC, and AC = 8x – 20,
find BC.
3x-1
А в
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Answer:
BC = 26
Step-by-step explanation:
Given that:
B is the midpoint of AC
Then AC = AB + BC
AC = 8x - 20 and AB = 3x - 1
Then,
8x - 20 = (3x - 1) + BC
8x - 20 - (3x - 1) = BC
8x - 20 - 3x + 1 = BC
5x - 19 = BC
But AB = BC
5x - 19 = 3x - 1
5x - 3x = - 1 + 19
2x = 18
x = 9
Hence,
Since BC = AB = 3x - 1
3(9) - 1
27 - 1
= 26
a=3 and b= 4 what does b^a=
Answers
Answer:
b^a= 4^3 =64
Step-by-step explanation:
4^3
that is 4*4*4
hope this helped!
HELP ME PLEASE!!! D:
at the grocery store, choco bars outsells cinnamon granola bars by a five-to-one ratio. if the store sold 246 bars, how many of them were cinnamon granola bars?
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Answer:
205 : 41
or 41 cinnamon bars
What quantity measures the amount of space and object occupies
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Answer:
its volume
Step-by-step explanation:
Answer:
Volume is the unit that measures space of an object
Carlos gives a cashier a $20 bill. He is buying an item for $3.44. How much money should Carlos get back?
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Answer:
$16.56
Step-by-step explanation:
Answer:
Carlos should get back $16.56
30 POINTS ONE QUSETION ASAAAAAAAPPPPPP
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Answer: There are a total of 12 rocks
Step-by-step explanation:
-4x + 3y + 2x = what does this equal?
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(-8, 4), (10, -9)
Find the midpoint
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Answer:
The midpoint between 2 points is (1,2.5) .
Step-by-step explanation:
We have to apply midpoint formula :
[tex]midpoint = ( \frac{x1 + x2}{2} , \frac{y1 + y2}{2} )[/tex]
[tex]let \: (x1,y1) \: be \: ( - 8,4)[/tex]
[tex]let \: (x2,y2) \: be \:(10 , - 9)[/tex]
[tex]midpoint = ( \frac{ - 8 + 10}{2} , \frac{4 + ( - 9)}{2} )[/tex]
[tex]midpoint = ( \frac{2}{2} , \frac{ - 5}{2} )[/tex]
[tex]midpoint = (1,2.5)[/tex]
what is 5x-4x+8 Really need to earn 50 points
Answers
Answer:
x+8 i used mathaway i recommend it for math
[tex]5x - 4x + 8\\x + 8\\\\ahi queda creo \\pero si esque te confundiste y pusiste "-" en vez de poner "=" seria:\\5x = 4x + 8\\x = 8\\xd 7w7[/tex]
give the domain and range of the relation
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Answer:
Domain: 1, 6
Range: 4
Step-by-step explanation:
The Domain is the first coordinate which is x
The Range is the second coordinate which is y
Hope This Helps :)
Help please math what is the inverse of the function
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I hope this helps you
What is the value of -9·2.2?
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Answer:
-19.8
Step-by-step explanation:
Answer:
Step-by-step explanation:
-9 x 2.2 = -19.8
1
2.2
X -9
-----------
- 19. 8
PLZ HELP!!!! A pair of equations is shown below: y = 6x − 4 y = 5x − 3 Part A: In your own words, explain how you can solve the pair of equations graphically. Write the slope and y-intercept for each equation that you will plot on the graph to solve the equations. (6 points) Part B: What is the solution to the pair of equations? (4 points)
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Answer:
Step-by-step explanation:
y = 6x − 4
y = 5x − 3
A: chose a value for x(input) and get the out put (y) because the equation already in the slope intercept mode:y=mx+b
x y=6x-4 y=5x-3
1 y=2 y=2
2 y=8 y=7
0 -4 -3
slope :
y=6x-4 slope is 6 y intercept(0,-4)
y=5x-3 slope is 5 y intercept (0,-3)
solution of the pair of equation is the point of intersection :
6x-4=5x-3
6x-5x=-3+4
x=1 and y=6x-4 ⇒ y=6-4=2
(1,2)12y=156
Solve for the Variable
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Answer:
13
Step-by-step explanation:
12y = 156
y = 156 ÷ 12
y = 13
Can someone please help me out with this? Honestly have no idea how this table works
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I need help!! Variables
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Answer:
the correct answer is 20 .
Step-by-step explanation:
x^2 - ( x + 4 ) - y = ?
6^2 - ( 6 + 4 ) - 6 = ?
36 - ( 10 ) - 6 = ?
26 - 6 = 20
Delilah does 184 jumping jacks in 4 minutes. She does her jumping jacks at a constant rate. How many jumping jacks can Delilah do per minute?
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Answer:
184 jumping jacks = 4 minutes
Divide by 4 on both sides.
4/4 = 1
184/4 = 46
Delilah does 46 jumping jacks in 1 minute.
if tanA+cotA=2 then find the value of cosA
Answers
Answer:
cos A=
[tex] \frac{1}{ \sqrt{2} } [/tex]
Step-by-step explanation:
We know,
cotA=
[tex] \frac{1}{ \tan(a) } [/tex]
Substituting the value of cot A in the given equation, we get
[tex] \tan( a) + \frac{1}{ \tan(a) } = 2[/tex]
[tex] \frac{{ \tan }^{2} a + 1}{ \: \tan(a) } = 2[/tex]
[tex] { \tan }^{2 \: } a \: + 1 = 2 tan \: a[/tex]
[tex] { \tan }^{2} a - 2 \tan \: a + 1 = 0[/tex]
[tex]( \tan \: a - 1) {}^{2 } = 0[/tex]
[tex] \tan \: a - 1 = \sqrt{0} [/tex]
[tex] \tan \: a = 1 [/tex]
[tex] \tan \: a \: = \tan \: 45[/tex]
[tex]a = 45[/tex]
[tex] \cos \: a = \cos \: 45[/tex]
[tex] \cos \: a = \frac{1}{ \sqrt{2} } [/tex]
The ratio of red marbles to blue marbles is 3:5. If there are 225 blue marbles total in the collection, how many of each color are there? Please show your work.
Answers
Answer:
Red balls = 84 Blue balls = 140
Step-by-step explanation:
Ok so there are 225 marbles
And ratio here is Red : Blue = 3 : 5
So Red marbles = 3x whereas Blue marbles = 5x
Therefore,
3x + 5x = 225
8x = 225
x = 28.125 = 28
Red balls = 28*3 = 84 Blue balls = 28*5 = 140
(Pls check whether total no of balls is 224)
Beth is solving this equation: 1/x + 3 =3/x
she says "I can multiply both sides by X and get the linear equation 1 + 3x = 3 whose solution is x = 2/3 ."
which of the following statements makes this a correct argument, or shows that it is in correct? Select all that apply.
a. you cannot multiply both sides by x because you do not know what x is.
b. you can assume x = 0 because both sides are undefined if x = 0
c. after multiplying both sides by X you need to subtract 1 from both sides.
d. the equation is not linear, so you cannot use the methods normally used for solving linear equations.
Answers
Answer:
a. you cannot multiply both sides by x because you do not know what x is.
Step-by-step explanation:
Given:
[tex]\frac{1}{x} + 3 = \frac{3}{x}[/tex]
Required
Select which of the option that applies
Considering (a):
A is incorrect:
Because: Multiplying both sides by x has nothing to do with whether the value of x is known or not
Considering (b):
B is incorrect:
Substitute 0 for x in the given expression
[tex]\frac{1}{0} + 3 = \frac{3}{0}[/tex]
[tex]Und efi ned[/tex]
Both sides of the equation are undefined
However, you cannot assume x to be 0
Considering (c):
C is correct:
Start by multiplying both sides by x
[tex]x (\frac{1}{x} + 3) = \frac{3}{x} * x[/tex]
[tex]1 + 3x = 3[/tex]
Then, subtract 1 from both sides
[tex]1 - 1 + 3x = 3 - 1[/tex]
[tex]3x = 2[/tex]
Divide through by 3
[tex]x = \frac{2}{3}[/tex]
Considering (d):
D is incorrect;
Because, the equation is linear
Find the missing number + 8 = 4
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Answer:
-4
Step-by-step explanation:
Determine whether the graph is the graph of a function. (2 points)
Answers
Answer:
yes it is a function
Step-by-step explanation:
if you put three lines on the line of the line passes more than 1 it is not a function
I really need help with this section
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Looks like you did most of it.
The next step would be setting them equal to 105, like the problem suggests.
[tex]5z+3x+7x=105[/tex]
[tex]15x=105[/tex]
[tex]x=7[/tex]
Then we can plug back in to find the numbers.
[tex]5*7=35[/tex]
[tex]3*7=21[/tex]
[tex]7*7=49[/tex]
[tex]35+21+49=105[/tex]
The three numbers are [tex]35, 21, 49[/tex].
Hope this helps.
頑張って!
Since the sum of 3 number be 105
So
5x+3x+7x=105
15x=105
X=7
1st number=35
2nd number=21
3rd number =49
Q2
Let first number be=x
Second number be=2x
Sum of this two number is 24
so x+2x=24
3x=24
X=8
1st number=8
2nd number=16
Hope this can help.
Pete’s Painting Company will charge a one-time fee of $60 for labor and $20 for each room painted. Carla’s Creative Colors will charge $40 a room but only $20 to hire workers. Write a function rule for Pete’s Painting Company in function notation. Write a function rule for Carla’s Creative Colors in function notation.
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Answer:
Pete's: [tex]f(x) = 20x + 60[/tex]
Carla's: [tex]f(x) = 40x + 20[/tex]
Step-by-step explanation:
Let's assume that [tex]x[/tex] is the amount of rooms painted, and [tex]f(x)[/tex]
For Pete's Painting Company, they charge a flat fee of $60, so we will have a constant of 60.
They also charge 20$ per room, meaning that we will multiply 20 by [tex]x[/tex], the amount of rooms painted.
This gets us the function [tex]f(x) = 20x + 60[/tex]
For Carla's Creative Colors, they charge 20$ to hire the workers, meaning this will be our constant.
They also charge $40 a room, meaning we will multiply 40 by [tex]x[/tex], the amount of rooms painted.
So the function is [tex]f(x) = 40x + 20[/tex].
Hope this helped!
what is the square root of 2 (the square root as a fraction)
Answers
Answer:
the square root of 2 is irrational because it cannot be written as a ratio or fraction.
Step-by-step explanation: