Answer:
6 hours
Step-by-step explanation:
if you take 2 hours and multiply it by 2 you get 4 hours or 2000 and if you take 1000 and divide by 2 you get 500 so add them together and you get 6 hours :)
whats the answer to this question
8/x=5/9
x=?
Answer:
8/14.4 is the answer
Step-by-step explanation:
both equal 0.5555556
The curve above the graph of a sinusoidal function. It goes through the points (-11,0) and (3,0). Find a sinusoidal function that matches the given graph.if needed you can enter pi=3.1416… as pi in your answer otherwise use at least 3 decimal digits.
F(x)=
Considering the zeros, the graph for the sinusoidal function is:
[tex]F(x) = \sin{\frac{\pi}{7}(x-3)}[/tex]
The zeros given for the function are: [tex]x = -11, x = 3[/tex].For practicality, we are going to define a sine function, which has a zero at x = 0, so we use shifting.The sine function is given by:
[tex]F(x) = A\sin{Bx}[/tex]
In which:
The amplitude is A.The period is [tex]T = \frac{2\pi}{B}[/tex].In this problem:
We suppose an amplitude of 1, thus [tex]A = 1[/tex].The difference between the zeros is 14, so we use a period of 14, thus [tex]T = 14[/tex], and:[tex]\frac{2\pi}{B} = 14[/tex]
[tex]B = \frac{2\pi}{14}[/tex]
[tex]B = \frac{\pi}{7}[/tex]
Thus:
[tex]F(x) = \sin{\frac{\pi}{7}x}[/tex]
Like this, the zeros are at [tex]x = -14[/tex] and [tex]x = 0[/tex]. We want it at [tex]x = -11, x = 3[/tex], thus, we shift the function 3 units to the right, that is, the function is:
[tex]F(x) = \sin{\frac{\pi}{7}(x-3)}[/tex]
The graph is sketched at the end of this answer, and has the desired behavior, which are points (-11,0) and (3,0).
A similar problem is given at https://brainly.com/question/22136310
A washing machine is on clearance for 30% off. If the sale price of the washing machine is $395.49, what was the original price? Round to the nearest cent if necessary. Justify your solution.
Answer:
Discount = Original Price x Discount %/100
Discount = 395.49 × 30/100
Discount = 395.49 x 0.3
You save = £118.65
Final Price = Original Price - Discount
Final Price = 395.49 - 118.647
Final Price = £276.84. (ANSWER)
original price of washing machine is $564.99 if the sale price of the washing machine is $395.49 with 30% off.
What is Percentage?Percentage is defined as a given part or amount in every hundred
Based on the given conditions, formulate:
x×(1-30%)=395.49
Apply multiplicative distribution
x-0.3x=395.49
Combine the like terms
0.7x=395.49
x=395.49/0.7
Convert decimal to fractions
x=(39549/100)/(7/10)
x=39549/(10×7)
x=39549/70
x=564.99
Hence original price of washing machine is $564.99
To learn more on Percentages click:
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For each problem, decide whether the circumference of the circle or the area of the circle is
most useful for finding a solution. Explain your reasoning
a. A car's wheels spin at 1000 revolutions per minute. The diameter of the wheels is 23
inches. You want to know how fast the car is travelling. Select)
b. A circular kitchen table has a diameter of 60 inches. You want to know how much fabric is
needed to cover the table top. Select)
c. A circular puzzle is 20 inches in diameter. All of the pleces are about the same size. You
want to know about how many pieces there are in the puzzle.
[ Select)
d. You want to know about how long it takes to walk around a circular pond.
[ Select
It is -4°F in the morning. By afternoon it is 15°F. What is the temperature change?
Answer:
The temperature change is 11.
Step-by-step explanation:
You take the starting temp. (-4) and add it to the final temp (15) which looks like this:
-4+15
This gets you the answer of 11.
The other person is correct.Sorry about that
(cos2x-1). sin 3x = 0
please give Brainly points!!
How much will it cost to fill a
13-gallon gas tank at $2.30 per gallon?
Answer:
$29.90
Step-by-step explanation:
Just multiply gallons by price:
13 gallons x [tex]\frac{2.30 dollars}{1 gallon}[/tex] = 29.9
what is 5x(2x+7)+x(3x-5 do you know
Answer:
43xx
Step-by-step explanation:
5x(2x+7)+x(3x-5)
first, do the equations inside the parentheses
2x+7=9x
3x-5=-2x
so,
5x(9x)+x(-2x)
Next, do 5x times 9x
(5x) x (9x) = 45
so,
45+x(-2x)
Next, do x times (-2x)
(x) x (-2x)=-2xx
so,
45+-2xx
=43xx
30 POINTS ANSWER ASAP
Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is $2, and the profit on every wrap is $3. Sal made a profit of $1,470 from lunch specials last month. The equation 2x + 3y = 1,470 represents Sal's profits last month, where x is the number of sandwich lunch specials sold and y is the number of wrap lunch specials sold.
Change the equation to slope-intercept form. Identify the slope and y-intercept of the equation. Be sure to show all your work.
Describe how you would graph this line using the slope-intercept method. Be sure to write using complete sentences.
Write the equation in function notation. Explain what the graph of the function represents. Be sure to use complete sentences.
Graph the function. On the graph, make sure to label the intercepts. You may graph your equation by hand on a piece of paper and scan your work or you may use graphing technology.
Suppose Sal's total profit on lunch specials for the next month is $1,593. The profit amounts are the same: $2 for each sandwich and $3 for each wrap. In a paragraph of at least three complete sentences, explain how the graphs of the functions for the two months are similar and how they are different.
2x + 3y = 1470
3y = -2x + 1470
y = -2/3x + 490 is the equation in slope intercept form.
slope = -2/3
y intercept = 490
allso, can u mark brainlist
2x/2 = 90/2 pls solve it it
Answer:
x=45
Step-by-step explanation:
2(45)=90
90/2=90/2
please help me
no random links pls
Answer:
Answer is c I think
Step-by-step explanation:
How do you turn into a fraction a number with negative exponents ?
Answer:
A negative exponent involves taking the inverse of the number, then multiplying it by itself once it's in the denominator of the fraction.
7v- 5 ≥ 65 or -3v - 2 ≥ -2
The result if the inequality expressions are v ≥ 10 and v < 0
Given the following inequality expression
7v- 5 ≥ 65 or -3v - 2 ≥ -2
Solve the inequality individually
7v - 5 ≥ 65
Add 5 to both sides
7v - 5 + 5 ≥ 65 +5
7v ≥ 70
v ≥ 70/7
v ≥ 10
For the inequality-3v - 2 ≥ -2
Add 2 to both sides
-3v - 2 + 2≥ -2 + 2
-3v ≥ 0
v < 0
Hence the result if the inequality expressions are v ≥ 10 and v < 0
Learn more here: https://brainly.com/question/15816805
Solve the systems of equation by graphing
#a
Refer to attachment 1
#b
Refer to attachment 2
Can someone help me do this
Answer:
T
Step-by-step explanation:
if f(x)=2x^2+12 , what is f(3)
Answer:
f(3) = 30
Step-by-step explanation:
f(3) = 2(3)^2 + 12 = 30
Isosceles triangles may be obtuse or acute but never right.
A. True
B. False
Help i don't get it. I've been trying
Answer:
JK = 42 , KL = 78
Step-by-step explanation:
JK + KL = JL , substitute values
4x + 6 + 7x + 15 = 129 , that is
11x + 21 = 120 ( subtract 21 from both sides )
11x = 99 ( divide both sides by 11 )
x = 9
Then
JK = 4x + 6 = 4(9) + 6 = 36 + 6 = 42
KL = 7x + 15 = 7(9) + 15 = 63 + 15 = 78
1.Azad has $500 and wants to go on a holiday, but does not have sufficient money. He decides to save $40 per week for a number of weeks to make up the deficit.
How much will he have saved at the end of the 5th week? Explain your answer.
2.A baker has 400kg of flour on the first day of the month and uses no flour that day. How much will he have at closing time on the 17th day of the month, if he uses 24 kg each day after that?
1. At the end of the 5th week he would have saved a total of $700
2. The amount of flour he would have at the closing time on 17th of the month will be 16kg
1.
Azad amount = $500
He wants to go on a holiday but he lacks sufficient money. This means the $500 in his possession is not enough.
He decided to save $40 dollars per week for a number of weeks to make up the deposits.
let
w = number of weeks
Therefore, his saving for any number of weeks will be
40wThe amount he would have saved for 5 weeks will be
40×5=$200
The total amount in his possession at the end of the fifth week will be 200 + 500 = $700
2.
The baker has 400 kg of flour. The first day of the month he didn't use any flour. This means on the first day of that month the flour was still 400 kg. The amount he has on the 17th day of the month can be calculated below.
The 17th day simply implies he used the flour for 16 days, the first day of the month he didn't use anything. He uses 24 kg for each day. Therefore the amount he uses for 16 days will be
16×24=384 kgThe amount he has at the closing time of 17 days of the month will be
400kg - 384kg = 16kgCheck here for similar algebra problems: https://brainly.com/question/22779754?referrer=searchResults
Which of the given is the set of zeroes of the polynomial p(x)=2x3+x2-5x+2
Answer:
x = 1, [tex]\frac{1}{2}[/tex], -2Step-by-step explanation:
To find the roots (zeros), replace y with 0 and solve for x .
Hope this helped. A brainliest would be very much appreciated. (I need 5 brainliest so I can level up) :)
Please help me w this
Answer:
I can't give answer i don't have but....
percentage is similar to division.
PLEASE HELP!!! WORTH 20 POINTS!
For each pair of points, find the slope of the line that passes through both points. If you get stuck, try plotting the points on graph paper and drawing the line through them with a ruler. Use fractions, not decimals, and make sure to simplify all fractions.
Answer:
a. 1 1/2 (or 3/2)
b. 2/3
c. 1
d. 1
Step-by-step explanation:
Part A: (1,1) (7,5)
To determine the slope, you will use the equation m=(y2-y1)/(x2-x1). Keep in mind that it doesn't matter what point you use for (x1, y1) or (x2, y2).
Let's plug in the numbers for part a:
m=(7-1)/(5-1)
Let's then solve the problems inside the parentheses:
m=6/4
And finally, we simplify:
m=3/2 (or 1 1/2 depending on what your teacher wants for an answer)
For these others, I will just go through the steps and not explain them, if you need help or don't understand something I'm doing, either look back at what I did for part a or comment on this answer.
Part B: (1,1) (5,7)
m=(5-1)/(7-1)
m=(4/6)
m=2/3
Part C: (2,5) (-1,2)
m=(-1-2)/(2-5)
m=(-3/-3)
m=1
Part D: (2,5) (-7,-4)
m=(-7-2)/(-4-5)
m=(-9/-9)
m=1
Helpppppppppppppppppppppppppppp
Answer:
it would be A-28.66
Step-by-step explanation:
just divide the total bill by the number of months.
Answer:
The apple question is b and the bill question is a
Step-by-step explanation:
for the apple question you multiply 1.89 by 2.4 and round to the nearest 10th
for the bill question you divide 85.98 by 3 which gives you 28.66
How to solve linear equation
You can use elimination and substitution method
EXAMPLE :
Given :
2x + y = 5
3x - 5y = 1
2x + y = 5 (× -5)
3x - 5y = 1
__________
-10x - 5y = - 25
3x - 5y = 1
____________ _ (elimination)
-13x = - 26
x = - 26/-13
x = 2
Substitution x = 2 to 2x + y = 5 :
2x + y = 5
2(2) + y = 5
4 + y = 5
y = 5 - 4
y = 1
Question 2 (14 points)
What is 151st term of the sequence: -3,0,3, 6, ...
O a
450
447
Ob
ос
Od
440
443
using quadratic regression what parabola uses the points (4,80), (-3,-11), (-1,-15)? i need help badly i don’t understand this at all
Answer:
How do you find a quadratic regression from points?
Image result for using quadratic regression what parabola uses the points (4,80), (-3,-11), (-1,-15)?
Quadratic regression is the process of determining the equation of a parabola that best fits a set of data. This set of data is a given set of graph points that make up the shape of a parabola. The equation of the parabola is y = ax2 + bx + c, where a can never equal zero
Step-by-step explanation:
What is the slope of a line perpendicular to the line y= -42 + 16
a. 1/4
b. -4
c. 4
d. -1/4
Can someone help me with this pls?
The admission fee at an amusement park is $15.50 for children and $20.00 for adults. One day 217 people entered the park and the total admissions fees collected was $3.782
Define your variables as
"C" = # of children
"a" = # of adults
Write a system of equations to represent this information solve the system to find out how many children and how many adults came to the amusement park that day.
Answer:
Children = 124
Adults = 93
Step-by-step explanation:
x = children
y = adults
x + y = 217
x = 217 - y
15.50x + 20y = 3782
15.50 (217-y) + 20y = 3782
3363.50 - 15.50y + 20y = 3782
4.5y = 3782 - 3363:50
y = 418.50/4.5
y = 93
x + 93 = 217
x = 217 - 93
x = 124
Graph the image of the given triangle after a rotation of 180° about the origin
Answer:
The bottom point is at (-1, 1) the right point is at (6,-2) and the left point is at (-5,4)
Step-by-step explanation:
Rotation of any polygon about the origin gives the opposite sign coordinate of the original figure thus new coordinate will be (1,-1),(2,-6), and (5,-4).
What is the transformation of a graph?Transformation is rearranging a graph by a given rule it could be either increment of coordinate or decrement or reflection.
Reflection is a mirror image of a graph about any axis.
If a coordinate of any polygon (x,y) is rotated 180 degrees about the origin either clockwise or anticlockwise then its coordinate will change sign.
(x,y) → (-x,-y)
Given triangle have coordinates as (-1,1),(-2,6), and (-5,4).
The transformation (x,y) → (-x,-y) gives ;
(-1,1) → (1,-1)
(-2,6) → (2,-6)
(-5,4) → (5,-4)
Hence "Rotation of any polygon about the origin gives the opposite sign coordinate of the original figure thus new coordinate will be (1,-1),(2,-6), and (5,-4)".
To learn more about the transformation of graphs,
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