Answer:
-16
Step-by-step explanation:
-16 + (-1) = -17
Amy wants to buy a dress that sells for $60.00 She uses two coupons when she buys the dress. One coupon is for 30% discount and the other coupon is for $10.00 off. The cashier takes a $10.00 off and then deducts the 30% discount
PART A: how much does amy pay for the dress
PART B: would the price be different if the cashier had taken the 30% discount first then taken the $10 off? Be sure to show your work and justify your answer
Answer:
Part A: $45, Part B: $8
Step-by-step explanation:
Part A: 60 - 10 = 50
50 * 0.30 = 15
60 - 15 = $45
Part B: 60 * 0.30 = 18
18 - 10 = $8
Answer: part a: $35
part b $32
Step-by-step explanation:
factorise x³-4x²+x+6
The binomial factors of x³- 4x²+x+6 are (x+2), (x+3), and (x-1).
Using the splitting and grouping the terms:
x³ + 4x² + x - 6
= x³ + 2x² + 2x² + x - 6 [Splitting 4x² = 2x² + 2x²]
= (x³ + 2x²) + (2x² + x - 6)
= x² (x + 2) + (2x² + 4x - 3x - 6)
= x² (x + 2) + [ 2x (x + 2) - 3 (x + 2)]
= x² (x + 2) + (x + 2) (2x - 3)
= (x + 2) ( x² + 2x - 3)
= (x + 2) ( x² + 3x - x - 3)
= (x + 2) [x (x + 3) - 1 (x + 3)]
= (x + 2) (x + 3) (x - 1)
Hence, the binomial factors are (x + 2), (x + 3) and (x - 1)
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Talwar wants to invest R5800 at simple interest rate of 12,2% per annum. How many years will it take for the money to grow to R26100
It will take approximately 28.67 years for Talwar's investment of R5,800 to grow to R26,100 at a simple interest rate of 12.2% per annum.
To calculate the number of years it will take for Talwar's investment to grow to R26,100 at a simple interest rate of 12.2% per annum, we can use the formula for simple interest:
Simple Interest = Principal × Rate × Time
Given that the principal (P) is R5,800, the rate (R) is 12.2% (or 0.122 as a decimal), and the desired amount (A) is R26,100, we need to find the time (T) it will take. Rearranging the formula, we get:
Time = (Amount - Principal) / (Principal × Rate)
Plugging in the values, we have:
Time = (R26,100 - R5,800) / (R5,800 × 0.122)
= R20,300 / R708.6
≈ 28.67 years
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Simplify 18 - 2[x + (x - 5)]. 28 - 4 x 8 - 4 x 28 - 2 x
Answer:
\(-4x+28\)
Step-by-step explanation:
\(18-2(x+x-5)\)
\(18+(-2)(x)+(-2)(x)+(-2)(-5)\)
\(18+-2x+-2x+10\)
\(-2x-2x+10+18\)
\(=-4x+28\)
Sarah negotiated a price of $25,290.00 for a new Toyota Camry Hybrid Sedan. She is prepared to give a down payment of 13%. Her credit union offered her a 4-year amortized loan for the remaining amount at a rate of 1.75%.
How much money will be paid in interest?
How much will the car cost, in total?
Answer: D
Step-by-step explanation:
The cost of a car rental is $30 per day plus 20¢ per mile. You are on a daily budget of $94. Write and
solve an inequality to find the greatest distance you can drive each day while staying within your
budget. Use pencil and paper. Find 2 other two-step inequalities with the same solutions.
Answer: Read carefully.
Step-by-step explanation:
STEP 1
determine inequality
Car rental= $30 per day
Mileage= $0.20 per mile
m= number miles driven
Add daily rental charge to the quantity of (number of miles driven multiplied by the per mile charge). This has to be less than or equal to the budget of $94 a day.
$30+ ($0.20 * m) ≤ $94
$30 + $0.20m ≤ $94
Hope this helps! Have an amazing day!
This graph shows how fast a commuter train travels on its route in an urban area. What is the meaning of the point with an x-coordinate of 4
The meaning of the point with an x-coordinate of 2 is in 2 seconds, the commuter travels 120 feet.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
Independent variables represent function inputs that do not depend on other values, while dependent variables represent function outputs that depends on other values.
From the graph, the x coordinate 2, have a y coordinate of 120. Hence:
The meaning of the point with an x-coordinate of 2 is in 2 seconds, the commuter travels 120 feet.
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1 in a school test consisting of 10 questions, 5 points are awarded for a correct answer but 3 points are deducted for an incorrect answer. a blank answer scores 0. mike scored a total of 0 and he did not leave all of the answers blank
a) Either 3 or 4 questions did Mike answer correctly.
b) Either 7 or 8 questions did Sheila answer correctly.
What is a equation in math?In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.
a) Let mike did x correct
then, incorrect will be (10- x)
The equation is:
Now, 5x + (10 - x) (-3) = 0
=> 5x - 30 + 3x = 0
=> 8x = 30
=> x = 30/8
=> x > 3 and x < 4
b) Let Sheila did y correct
then, incorrect = (10 - y)
Now, 5y + (10 - y) (-3) = 32
=> 5y - 30 + 3y = 32
=> 8y = 62
=> y > 7 and y< 8
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The given question is incomplete, complete question is:
In a school test consisting of 10 questions, 5 points are awarded for a correct answer but 3 points are deducted for an incorrect answer.
A blank answer scores (). Mike scored a total of () and he did not leave all of the answers blank. (a) How many questions did Mike answer correctly? _ _ _ _ _ _ _ _ Sheila scored a total of 32. (b) How many questions did Sheila answer correctly?
Given a rectangle with an area of 20 square units, if the width is x units and the length is x + 1 units, what is the difference between the length and the width?
Answer: 1unit.
Step-by-step explanation:
Area of the rectangle
A = length × width
Since the area = 20 and the width is x and the length is x + 1.
We now substitute for the values in the above formula and solve for x
20 = x × x + 1
20 = x( x + 1 ), we now open
20 = x² + x , then re arrange.
x² + x - 20 = 0, this is a quadratic equation.we solve for x using quadratic means
Here, I am going to solve using factorization by grouping
x² + x - 20 = 0
x² + 5x - 4x - 20 = 0
x( x + 5 ) - 4( x + 5 ) = 0
( x + 5 )( x - 4 ). = 0
Therefore, the solution for x will be
x = -5 or 4, but x can not be -5 ( negative), so x = 4.
Now the difference between width and the length can easily be calculated from the above,
Width = 4 (x) , and length = 5 (4 + 1),
Now difference will be
5 - 4 = 1unit.
The bookstore has 15 new copies and 15 used copies in stock. If 25 people come in one by one to purchase this text, what is the probability that all 25 will get the type of book they want from current stock
Answer:
The probability that all 25 will get the type of book they want from current stock is 0.024
Step-by-step explanation:
21% of all students who have to buy a text for a particular course want a new copy (the successes!), whereas the other 79% want a used copy.
p= 0.21
q=0.79
Let x be the no. of students who want a new copy
x can take values 15,14,13,12,11,10
We are supposed to find probability that all 25 will get the type of book they want from current stock
\(P(X=x) =\sum_{x=10}^{15} (0.21)^x (0.79)^{25-x}=0.024\)
Hence the probability that all 25 will get the type of book they want from current stock is 0.024
The table below shows a proportional relationship between x and y
What is the constant of proportionality for the relationship between x and y
The constant of proportionality for the relationship between x and y is 1.5 respectively.
What is the constant of proportionality?If the corresponding elements of two sequences of numbers, frequently experimental data, have a constant ratio, known as the coefficient of proportionality or proportionality constant, then the two sequences of numbers are proportional or directly proportional.
To get the value of "k" in direct proportionality, use the equation b = ka.
K = b/a is the result of this equation. mentioning indirect proportion To determine the value of "k" in indirect proportionality, use the equation b = k/a.
So, the formula to find the constant of proportionality:
k=y/x
Now,
Insert values as follows:
k=y/x
k=0.750/0.50
k=1.5
Therefore, the constant of proportionality for the relationship between x and y is 1.5 respectively.
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Answer:answer c
Step-by-step explanation:
math hw for tonight
help solve this problem! Thank you!
ap cal bc
Answer:
first option
Step-by-step explanation:
differentiate using the power rule
\(\frac{d}{dx}\) (a\(x^{n}\) ) = na\(x^{n-1}\)
then
\(\frac{dy}{dx}\) = \(\frac{dy}{dt}\) × \(\frac{dt}{dx}\) = \(\frac{\frac{dy}{dt} }{\frac{dx}{dt} }\)
y = t² + 4t
\(\frac{dy}{dt}\) = 2t + 4
x = t - 3
\(\frac{dx}{dt}\) = 1
then
\(\frac{dy}{dx}\) = \(\frac{2t+4}{1}\) = 2t + 4
Answer:
2t + 4
Step-by-step explanation:
A parametric equation is one where x and y are defined separately in terms of a third variable (often the parameter t).
To find dy/dx from parametric equations, differentiate each equation with respect to the parameter t, then use the chain rule:
\(\boxed{\dfrac{\text{d}y}{\text{d}x}=\dfrac{\text{d}y}{\text{d}t} \times \dfrac{\text{d}t}{\text{d}x}}\)
Differentiate the two parametric equations with respect to t:
\(x=t-3 \implies \dfrac{\text{d}x}{\text{d}t}=1\)
\(y=t^2+4t \implies \dfrac{\text{d}y}{\text{d}t}=2t+4\)
Use the chain rule to combine them:
\(\begin{aligned}\implies \dfrac{\text{d}y}{\text{d}x}&=\dfrac{\text{d}y}{\text{d}t} \times \dfrac{\text{d}t}{\text{d}x}\\\\&=(2t+4) \times \dfrac{1}{1}\\\\&=2t+4\end{aligned}\)
Therefore:
\(\boxed{\dfrac{\text{d}y}{\text{d}x}=2t+4}\)
Plz help, fill in the blanks in order
PLEASE HELP WILL GIVE BRAINLIEST!!
Teresa buys candy that costs $5 per pound. She will spend less than $35 on candy. What are the possible numbers of pounds she will buy?
Use p for the number of pounds Teresa will buy.
Write your answer as an inequality solved for p.
Answer:
p<7
Step-by-step explanation:
$5 per pound
7 pounds equals $35
$5p<$35
p<35/5
p<7
Supposed you invest 1000 at 9% interest, compound monthly . Find the amount you have after 18 months
The amount you have after 18 months is $ 1143.96 .
what is compound interest?
Interest that is added to a loan or deposit sum is known as compound interest. In our daily lives, it is the notion that is employed the most frequently. Compound interest is calculated for a sum using the principal and interest accrued over time. Compound interest and simple interest differ primarily in this way.
\(A=P {(1 +\frac{r}{n})^{nt} }\)
Given:
P = 1000 , r in decimal = 0.09 ,
n = 12 , t = 1.5 ( 18 months = one and a half years).
Substituting the values into the formula:
A = 1000 ( 1 + 0.09/ 12 ) ^[12 ( 1.5 )]
≈ 1000 ( 1.143960 )
= 1143.960
Rounding to the nearest cent, we get $ 1143.96 .
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4. Tabatha is dining out at Mandee's and decides to get an order of curly fries,
chicken fingers, and a coca-cola. The total cost of the food with sales tax came to
$18.61. If Tabatha decides to give the cashier a 20% gratuity (tip), what does her
total bill come to?
please help me !!! and thank youu !
Answer:
a=-3
b=-63
c= 2
d=8
e=9
f=128
h=-21
i=24
Step-by-step explanation:
Write the sentence as an equation.
106 more than the quantity 68 times y is the same as 36 decreased by y
Answer: 68y+106=36-y
Find the area of the given figure below
Answer: 963 cm²
Step-by-step explanation:
We will find the area of the yellow rectangle and then subtract the portion that is missing.
A = LW
A = (36 cm)(39 cm)
A = 1,404 cm²
Missing portion's area.
A = LW
A = (21 cm)(21 cm)
A = 441 cm²
Subtracting.
1,404 cm² - 441 cm² = 963 cm²
anyone know how to do this
Answer:
\( \sqrt{105} \)
Step-by-step explanation:
Using the geometric nean theorem, if we let the hypotenuse be x, then:
\( \frac{7}{x} = \frac{x}{15} \)
\( {x}^{2} = 105\)
\(x = \sqrt{105} \)
The sum of the digits of a two-digit number is 5. If nine is subtracted from the number, the digits will be reversed. Find the number.
The number whose sum of the digits of a two-digit number is 5. If nine is subtracted from the number, the digits will be reversed is 32
Equationx = tens digit y = ones digitthe number can be expressed as 10x + y
x + y = 5
nine is subtracted from the number(10x+y) - 9
= 10y+x
x + y = 5
9x - 9y = 9
x + y = 5
x - y = 1
Add the equations
2x = 6
x = 6/2
x = 3
substitute into
x + y = 5
3 + y = 5
y = 5 - 3
y = 2
Therefore, the unknown number is 32.
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PLEASE HELP AS SOON AS POSSIBLE
Find the quotient and explain the process and reasoning. 0 . 27 ÷ 0 . 03 =
PLEASE HELP ME WITH THIS !! ILL GIVE BRAINLIEST
Answer:
D. d ≈ 9.4
Step-by-step explanation:
[] We can use the distance formula to solve
-> The distance formal is attached.
\(d = \sqrt{(4-9)^{2}+ (2-10)^{2} }\)
\(d = \sqrt{(-5)^{2}+ (-8)^{2} }\)
\(d = \sqrt{25+ 64 }\)
\(d = \sqrt{89}\)
d ≈ 9.4
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.
- Heather
What is the area of the triangle?
(-6,3)
(-3,-5)
(-1,3)
Hey there! I'm happy to help!
To find the area of a triangle you multiply the base by the height.
We see that our base is 5 units long because it stretches from -6 to -1 on the coordinate plane. Our height is 8 because the y value goes from 3 to -5.
To find the area of a triangle, you just multiply the base by the height then divide by 2.
5(8)=40
40/2=20
The area is 20 square units.
Have a wonderful day! :D
A reporter for a local television station visits the city's new upscale shopping mall the day before Christmas to interview shoppers. He questions the first 25 shoppers he meets outside one of department stores at the mall. He asks them whether their overall feelings about Christmas shopping are positive, neutral, or negative. re Select the reason(s) why it may be risky to act as if the first 25 shoppers at this particular location are an SRS of all shoppers in the city. Shoppers at the mall the day before Christmas does not guarantee every shopper in the population has an equal chance to be in the sample Surveying shoppers the day before Christmas is a convenience sample, so it is a simple random sample Surveying shoppers at the mall the day after Christmas may not be a good represenation of all shoppers in the city. Having the reporter ask questions is not a double-blind study.
The correct option is A shopping center surveys conducted the day before Christmas do not guarantee that every shopper in the population will be included in the sample.
Given that,
The day before Christmas, a reporter from a nearby television station goes to the city's brand-new, upmarket retail center to speak with customers. The first 25 customers he encounter outside one of the mall's department stores are questioned. He inquires as to whether they have a positive, neutral, or negative overall opinion of Christmas shopping.
We have to select the correct option why it might be dangerous to assume that the first 25 customers at this store are representative of all customers in the city.
We know that,
A non-probability sampling technique called convenience sampling includes taking a sample from the nearest area of the population. It is a convenience sample because the reporter in the scenario asked the first 25 people he saw outside one of the department stores at the mall. Each candidate does not have an equal chance of being included in the convenience sample.
The right response is option (A): Shopping center surveys conducted the day before Christmas do not guarantee that every shopper in the population will be included in the sample.
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Convert 5 weeks to days.
A. 37 days
B. 30 days
C. 35 days
O D. 32 days
Answer:
C. 35 days
Step-by-step explanation:
there are 7 days in a week so 5 weeks is 5 times 7 which is 35
Given that the area of a triangle ABC is 4.5 m², a=4, b=3, find two possible measures for angle C. Round your answer to the nearest tenth
Answer:
\(C = 48.6\)
Step-by-step explanation:
Given
\(Area= 4.5m^2\)
\(a =4\)
\(b = 3\)
Required
Find angle C
The area of the triangle will be calculated using:
\(Area = \frac{1}{2}ab \sin C\)
So, we have:
\(4.5= \frac{1}{2} * 4 * 3 * \sin C\)
\(4.5= 6 * \sin C\)
Divide both sides by 6
\(0.75= \sin C\)
Take arc sin of both sides
\(\sin^{-1}(0.75)= C\)
\(48.6 = C\)
\(C = 48.6\)
Find the volume of a right circular cone that has a height of 6.7 in and a base with a diameter of 8.8 in. Round your answer to the nearest tenth of a cubic inch
Answer: 135.8
Step-by-step explanation:
the formula for this is πr²H/3
π4.4^2x6.7/3
407.5/3
135.8
Freya earns $1575 per month. What is the maximum amount she should budget for
housing?
Freya should budget a maximum of $472.50 for housing expenses based on the guideline of spending 30% of her monthly income.
When budgeting for housing, it is generally recommended to allocate a certain percentage of your income towards housing expenses. The recommended percentage varies depending on factors such as location, personal financial goals, and individual circumstances.
A common guideline is to spend no more than 30% of your monthly income on housing expenses. To determine the maximum amount Freya should budget for housing, we can calculate 30% of her monthly income:
Maximum housing budget = 30% of $1575
Maximum housing budget = 0.30 × $1575
Maximum housing budget = $472.50
Therefore, Freya should budget a maximum of $472.50 for housing expenses based on the guideline of spending 30% of her monthly income.
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Whats 35 divided by 375?
Answer:0.093333333333
Step-by-step explanation: