Answer:
x=1
Step-by-step explanation:
The function graph is a parabola (branches pointing up). Vertex (1; -2). The graph is symmetrical about the x axis = 1
[tex]f(x)=2x^{2} -4x \\x_{0} =-b/2a=-(-4)/(2*2)=1\\f(1)=-2\\[/tex]
What is 6/11 as a decimal
Answer:
0.54
Step-by-step explanation:
6 divided by 11 is 0.54-non-terminating therefore we get 0.54
Answer:
0.5455
Step-by-step explanation:
Plz choose mine as brainliest
what is the LCM of 25 and 35
Answer:
175
Step-by-step explanation:
A 3-column table with 4 rows. Column 1 has entries Computer repair, sales tax, gratuity, shipping. Column 2 is labeled Store A with entries 1,200 dollars, 6 percent, 15 percent, Free. Column 3 is labeled Store B with entries 1,350 dollars, 7 percent, 15 percent, 2 percent of total price.
What is the amount of sales tax charged on the repaired computer at Store A?
Answer:
A
Step-by-step explanation:
The amount of sales tax charged on the repaired computer at Store A is 72 dollars.
We have to given that,
A 3-column table with 4 rows.
Column 1 has entries Computer repair, sales tax, gratuity, shipping.
Column 2 is labeled Store A with entries 1,200 dollars, 6 percent, 15 percent, Free.
Column 3 is labeled Store B with entries 1,350 dollars, 7 percent, 15 percent, 2 percent of total price.
Hence, For store A,
The amount of sales tax charged on the repaired computer at Store A is,
6% of 1200
= 6/100 x 1200
= 6 x 12
= 72 dollars
Therefore, the amount of sales tax charged on the repaired computer at Store A is 72 dollars.
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4) How many km in
58,795cm?
Please help thanks!!
Step-by-step explanation:
1 km is equal to 100,000 cm.
58,795 is close to 50,000, which is half of 100,000. So our estimate would be 1/2 km to 50,000 cm.
Convert 58,795 to a decimal.
0.58795
The decimal cannot be simplified so there is
0.58795 km in 58,795 cm
Hope it helps!
Sarah's parents started a savings account for her when she was 12. The plan her parents chose earns 3.2% each year, and her parents initial deposit was $3500. How much will be in Sarah's savings account after 3 years when Sarah is ready to look for a car?
Answer:
$3846.87
Step-by-step explanation:
Assuming the interest is compounded annually, the value in 3 years is ...
FV = P(1 +r)^t
FV = $3500(1.032^3) ≈ $3846.87
Sarah's account will be worth about $3846.87.
What is the slope of the line through (-7,-2) and (-6, 7)?
Choose 1 answer:
1
9
B
-9
9
Answer:
9Step-by-step explanation:
Slope is rise over run or change y/change x.
7 - -2 = 9
-6 - -7 = 1
Slope = 9/1 or 9
___________________________________________________I AM ALWAYS HAPPY TO HELP :)The endpoints of AB¯¯¯¯¯¯¯¯ are A(9,−4) and B(5,5). Find the coordinates of the midpoint M. Coordinates of midpoint M: ( , )
Answer:
Step-by-step explanation:
(9 + 5)/2= 14/2= 7
(-4 + 5)/2= 1/2
(7, 1/2) Coordinates of Midpoint M
5x - 8x + 9 = 2x + 39
Answer:
pliz send me the formula, only dsn I can solve your answer
6-4(2x-3)+10x
Show and explain work
Answer:
18+2x
Step-by-step explanation:
6-4(2x-3)+10x
6-8x+12+10x multiply 2x-3 by -4
18+2x combine like terms
Lilyworks for a florist. She worked 20hours last week and earned $200.00. At that rate, how much will she earn if she works for 10 hours?
Answer:
$100
Step-by-step explanation:
Answer:
$100
Step-by-step explanation:
She will earn $100 because since 20 is just 10 times 2, she will earn half as much as she did in 20 hours. 200/2 is 100.
HELP ME PLEASE !!!!!!!!!
Answer:
12 units right 6 units down
PLEASE HELP ME IM BEGGING YOU
Answer:
A: 2x-1
Step-by-step explanation:
Graph it. if you plug in the x and y of (1,1)
1= 2(1)-1
1=2-1
correct
Answer: A
Step-by-step explanation:
Since we are given the slope, all we have to do is use the given point to find the y-intercept.
y=2x+b [plug in (1,1)]
1=2(1)+b [multiply]
1=2+b [subtract both sides by 2]
b=-1
Now, we know the equation is y=2x-1.
What is not a description of slope?
rise over run
the rate of change of a line
change in y over the change in x
the ratio of horizontal change compared to vertical change
Answer:
Option (d) is wrong.
Step-by-step explanation:
Slope is:
rise over runThe rate of change of a lineChange in y over the change in xThe ratio of vertical change to the horizontal change.It can be given by mathematically as follows :
[tex]m=\dfrac{y_2-y_1}{x_2-x_1}\\\\\text{and}\\\\m=\dfrac{dy}{dx}[/tex]
Hence, the option which is not a description of slope is (d) "the ratio of horizontal change compared to vertical change"
What is the value of x in the equation below?
6 (x minus 8) = 72
Answer:
[tex]x = 20[/tex]
Step-by-step explanation:
[tex]6(x - 8) = 72 \\ 6x - 48 = 72 \\ 6x = 120 \\ x = 20[/tex]
Answer:
The correct answer is c. 20
Select all the sums that are positive.
A. -5 + (-2)
B. 5+(-2)
C -3 + 4
D. 0 +(-3)
E –2 +4
please help
4x + 3 in.
3(2x-5) in.
PLEASE HELP!
Function Notation
Evaluate the following expressions give the functions below:
F(x)=4x+5 H(x)= x+ 2
g(x)=3x^2-4
1.f(5)=
2.h(-8)=
3.g(2)=
4.f(-4)=
5.h(13)=
6.g(3)=
7.f(6)=
8.h(-9)
Answer:
sorry we can't read such type of this exercise
Rosea drives her car 30 kilometers to the train
station, where she boards a train to complete her trip. The
total trip is 120 kilometers. The average speed of the train is
20 kilometers per hour faster than that of the car. At what speed
must she drive her car if the total time for the trip is less than
2.5 hours?
Answer:
>34.88km/h
Step-by-step explanation:
Because we have two unknown values in this question (speed of train and speed of car), we will need two equations to solve it.
Firstly, we can make a big equation for time in terms of the vehicle speeds. Time = distance / speed, so if we use t for the train speed and c for the car speed, we get this equation for speed:
30/c + 90/t = 2.5
Here the 30 is the distance traveled by the car in km and the 90 is the distance traveled by the train in km (120 - 30 = 90).
We also know that the train speed was 20km/h faster than the car speed so our second equation is:
c + 20 = t
So now we can substitute this in the big equation so we only have one variable to solve for:
30/c + 90/(c+20) = 2.5
Now to solve this, this first step is to get rid of the fractions, which we can do by multiplying all the terms by the lowest common factor of the two denominators which is c(c+20):
(30/c)*c(c+20) + (90/c+20)*c(c+20) = 2.5
This simplifies to:
120c+600=2.5c^2+50c
and then into the quadratic equation:
2.5c^2-70c-600=0
This can be solved with the quadratic formula or a solver/calculator, and yields the solutions:
c=−6.88, 34.88 (both to 2dp)
We can eliminate the negative solution because speed cannot be negative meaning that Rosea must drive her car at the speed of at least/greater than 34.88km/h if she wants the total trip to be less than 2.5 hours.
Hope this helped!
on a coordinate grid, line segment ab has midpoint p at (4,-3). if endpoint b has coordinates of (24,16), what is the x-coordinate of point a?
Answer:
(-16,-22)
Step-by-step explanation:
B (24,16)
Mid point (4,-3)
24 is -20 away from 4
16 is -19 away from -3
4-20= -16
-3-19= -22
What is the product?
(y^2+3y+7][8y^2+y+1)
Answer:
8 y^ 4 + 25 y^ 3 + 60 y^ 2 + 10y + 7
Hope this helps!
Answer:
8 y^ 4 + 25 y^ 3 + 60 y^ 2 + 10y + 7
Step-by-step explanation:
edge 2021
Jillian solved the equation v + 4.3 = 7.05 using the work shown below. * v + 4.3 = 7.05 v + 4.3 − 4.3 = 7.05 + 4.3 v = 11.35 What error did Jillian make?
Answer:
Please check explanation
Step-by-step explanation:
Here, in this question, we are interested in identifying the error made by Jillian in his solution of the equation.
This error is traceable to the second step of his solution. Adding 4.3 to 7.05 and subtracting again is the same thing as not adding anything or just adding zero only.
What he should have done is to subtract the value of 4.3 from both sides of the equation. In that manner, he would have been able to isolate v on the left hand side of the equation
Which expression represents the perimeter of the rectangle above?
6x + 3
10x + 6
8x2 + 6x
12x + 6
Answer:
12x+6
Step-by-step explanation:
(4x+3)+(4x+3)+(2x)+(2x)
4+4+2+2=12, 3+3=6
12x+6
-2 = 7+3v
Solve for v
Answer:
[tex] - 2 - 7 = 3v[/tex]
or,
[tex] - 9 = 3v[/tex]
or,
[tex] - 9 \div 3 = v[/tex]
or,
[tex] -3 = v[/tex]
or,
[tex]v = - 3[/tex]
can someone help me cause apparently nobody knows how to do this
Answer:
do what
Step-by-step explanation:
Translate each phrase into an expression with integers.
Do not simplify. You'll need to use parentheses to subtract a negative number
.
a. The opposite of 6:
b. The opposite of – 6:
c. Negative six
d. 8 minus negative 8:
Answer:
a. -6
b. -(-6) or 6
c. -6
d. 8 -(-8)
Step-by-step explanation:
The opposite of something is that something preceded by a minus sign (or with its minus sign removed).
a. the opposite of 6 is -6
b. the opposite of -6 is -(-6) or 6
c. negative 6 is a description of the integer -6
d. 8 minus negative 8 is 8 - (-8)
simplify 1/3(6x−12)+4x
Answer:
2⋅(3x−2)
Step-by-step explanation:
I want to pull all nighter and stay awake for 36 hours. If I woke up at 12 PM, and if it's currently 11:22 PM right now, then how long have I been awake?
( I actually need to know I'm pulling an all nighter to reset my sleep schedule)
Answer:
11 hours and 22 minutes
Select all the steps that you could use to subtract a negative fraction from a positive decimal. A. Subtract the absolute value of the decimal. B. Convert both numbers into fraction form. C. Convert both numbers into decimal form. D. Add the negative number to the positive number. E. Add the opposite of the negative number to the positive number.
the answers are A, D, and E
The problem can only be easily solved if the values are either all converted to fractions or all converted to decimal.
The steps that could be used to subtract a negative fraction from a positive decimal are;
Convert both numbers into fraction form Convert both numbers into decimal form Add the negative number to the positive numberIt is important that the both values are converted either to fraction or to decimal for ease of computation.
After this step is done, the negative number can now be added to the negative number and the result is recorded.
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Mr stokes placed 5 marbles in a bag. I’m looking for A,B,C,D,E
Answer:
B,C,D,E,A
Step-by-step explanation:
Btw, Mr. Stokes from RTMS?
This summer Paige's town will be hosting a series of 9 concerts. There are two types of seats at the concerts, which are priced at $29.50 and $43.00. Paige would like to attend at least 5 concerts and spend no more than $200. If x and y represent the number of tickets Paige purchased for the 2 types of seats, which system of inequalities could Paige use to model this situation?
Answer:
x ≥ 0
y ≥ 0
x + y ≥ 5
29.50 × x + 43.00 × y ≤ 200
= 29.50x + 43y ≤ 200
Step-by-step explanation:
From the question we are told that:
If x and y represent the number of tickets Paige purchased for the 2 types of seats, Paige would like to attend at least 5 concerts.
The inequalities that models the situation above is given as:
x ≥ 0
y ≥ 0
x + y ≥ 5
Also from the question, we were told that: There are two types of seats at the concerts, which are priced at $29.50 and $43.00. Paige would like to attend at least 5 concerts and spend no more than $200.
The inequalities that models the situation above is given as:
29.50 × x + 43.00 × y ≤ 200
29.5x + 43y ≤ 200
Therefore, the system of inequalities that could Paige use to model this situation is:
x ≥ 0
y ≥ 0
x + y ≥ 5
29.50 × x + 43.00 × y ≤ 200
= 29.5x + 43y ≤ 200
Answer:
d) x ≥0
y ≥ 0
x + y ≥ 5
29.5x + 43y ≤ 200
Step-by-step explanation: