Answer:
$3.00
Step-by-step explanation:
5x + 3y = 30 - - - - - 1 x 4
3x + 4y =29 - - - - - -2 x 3
--------------------------------------------
20x +12y = 120 - - - - 3
9x + 12y = 87 - - - - - 4
--------------------------------------------
3-4
20x - 9x= 120 - 87
11x = 33
X= 33
11
X = 3
The cost of cleaning each shirt is 3 dollars.
What is a linear equation?A linear equation is an algebraic equation of degree one. In general, the variable or the variables(in the case of a linear equation in two variables) the variables are x and y.
Assuming the cost of cleaning 1 shirt is x and the cost of cleaning 1 pant is y.
The first customer paid $30.00 for 5 shirt cleanings and 3 pants cleaning.
∴ 5x + 3y = 30...(i)
The second customer paid $29.00 for 3 shirt cleanings and 4 pants cleaning.
∴ 3x + 4y = 29...(ii)
Now to cancel out 'x' in both equations we multiply eqn(i) by 3 and eqn(ii) by 5.
So, 15x + 9y = 90...(iii) and 15x + 20y = 145...(iv)
Now subtracting (iii) from (iv) we get 11y = 55 ⇒ y = 5 and substituting the value of y in eqn(iv) we get x = 3.
The cost of cleaning each shirt is 3 dollars.
learn more about linear equations here :
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I need help please!!!
Answer:
[tex]\frac{21}{100}[/tex]
Step-by-step explanation:
As you can see in the table, there are 21 people that have dogs but don't take walks. To find the probability, divide 21 by the total amount of people that attended the survey:
[tex]\frac{21}{100}[/tex]
This fraction can't be simplified.
The probability, represented as a fraction in simplest form, that a randomly selected person does not take walks but has a dog is [tex]\frac{21}{100}[/tex].
7: +63
Factor the algebraic expression
Answer:
9
Step-by-step explanation:
n − 23 ≥ 19 solve the inequality.
Answer:
n ≥ 42
Step-by-step explanation:
n -23 ≥ 19 add 23
n ≥ 48
3 8 of your income is spent on your monthly bills, 2 5 is spent on food and clothing and 1 10 goes on entertainment. You put the remainder of your monthly income into savings.
Answer:
Fraction of saving = 1/8
Step-by-step explanation:
Given:
Spent on bills = 3/8
Spend on food = 2/5
Spend on entertainment = 1/10
Find:
Fraction of saving
Computation:
Fraction of saving = 1 - Spent on bills - Spend on food - Spend on entertainment
Fraction of saving = 1 - 3/8 - 2/5 - 1/10
By taking LCM
Fraction of saving = [40 - 15 - 16 - 4]/40
Fraction of saving = [5]/40
Fraction of saving = 1/8
Evaluate 7 to the power of 2 pls help
Answer:
49
Step-by-step explanation:
Whenever you power something, you are just multiplying that number by itself amount of times you are powering
7 to the power of 2 is 7² = 49
The power (or exponent) of a number define how many times to use the number in a multiplication.
It is written as like a small number to the right and above the base number.
In this example the little "2" says to use 8 two times in a multiplication: 82 = 8 × 8 = 64.
To evaluate 7 to the power of 2.
7² = 7 × 7 = 49
Therefore, 7 to the power of 2 is 49.
Learn more about power here:
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A skateboarder travels 90 M in 20 seconds what is her speed
Answer:
4.5
Step-by-step explanation:
Answer:
9 meters per 2 second or 4.5
Step-by-step explanation:
divide both by ten : )
Part A). Emily participates in a trivia quiz show. In each round, 20 points are awarded for a correct answer and 10 points are deducted for an incorrect answer. Part B). Emily answer 4 questions correctly and 11 incorrectly in the first round what was her score in the first round? Emily answer'd 7 questions correct and 8 incorrect in the second round what was her score in the second round.
Answer
A. -30 points
B. 60 points
Step-by-step explanation:
20 points for correct answer and 10 points deducted for wrong answer
Each deduction is -10 while each correct answer gives + 20
4 questions correctly and 11 incorrectly
= 4(20) + 11(-10)
= 80-110 = -30 points
Second round
7 correct, 8 incorrect
= 7(20) - 8(10)
= 140-80 = 60 points
Solve for the variable
10 + 25a = 75
Please help
Answer:
a = 2.6
Step-by-step explanation:
10 + 25a = 75
- 10. - 10
25a = 65
÷25. ÷25
a = 2.6
HOPE THIS HELPS
PLZZ MARK BRAINLIEST
Answer:13/5 or 2.6
Step-by-step explanation:
(11x + 2y) - (5x – y)
Answer:
the answer is [tex]6x+3y[/tex]
Step-by-step explanation:
[tex]\mathrm{Remove\:parentheses}:\\=11x+2y-\left(5x-y\right)\\\\-(5x-y): -5x+y\\=11x+2y-5x+y\\Simplify:\\11x+2y-5x+y: 6x+3y\\\\=6x+3y[/tex]
hope this helps :)
Try using Symbolab, I use it all the time it gives the correct answer and it gives good explanations.
The volume of a fish tank is given by the function V (x) = (x + 7) (1-4) (2x + 3). Write a function describing a fish tank that has the same height but is
longer in length by 3 units and wider by 2 units.
Answer:
V(x)=(x+9) * (3) * (2x + 6)
Step-by-step explanation:
A fish tank is usually made in the shape of a 3-Dimensional rectangular prism. The volume of this shape can be obtained by using the following formula
V = w * h * l
in this formula w represents the width, h represents the heigh, l represents the length, and V represents the volume of the rectangular prism/fish tank. Therefore, we can use the function provided in the question and simply add 3 units to the length and 2 units to the width in order for it to work for our new fish tank.
V(x)=(x+9) * (3) * (2x + 6)
I need help with this question
Answer:
a
Step-by-step explanation:
Answer:
the first one
Step-by-step explanation:
PLEASE HELP, MARKING BRAINLIEST!!
if 4m = 9n, then m/n=
Answer:
m/n=9/4
Step-by-step explanation:
4m = 9n
m/n=9/4
Can someone please explain how to do this problem for me?
Three people eat 2 pizzas altogether. Both pizzas are the same size. One person eats 2/3 of a pizza. A second person eats 1/2 of a pizza. How much pizza does the third person eat?
Answer: The other person eats 5/6ths of a pizza
Step-by-step explanation:
put it into sixths
Answer:
5 /6
Step-by-step explanation:
may be 5/ 6 is the correct one
Find the slope of the line.
Help!
Answer:
if the line is the blue one the answer is y=0
Step-by-step explanation:
Misty correctly determined the equation of the linear function represented by the table of values below to be y = negative 2 x + 9 in slope-intercept form by using the ordered pairs (1, 7) and (2, 5).
Answer:
we can verify that the determined equation is the same as the equation determines by Misty, hence, we conclude that Misty had correctly determined the equation of the linear function.
Step-by-step explanation:
As Misty determined the equation of linear function:
[tex]y=-2x+9[/tex]
We need to check whether she has got the correct equation or not.
As the linear equation passes through the points [tex](1, 7)[/tex] and [tex](2, 5)[/tex].
Finding the slope:
The slope between two points [tex](1, 7)[/tex] and [tex](2, 5)[/tex]
[tex]\left(x_1,\:y_1\right)=\left(1,\:7\right),\:\left(x_2,\:y_2\right)=\left(2,\:5\right)[/tex]
[tex]m=\frac{5-7}{2-1}[/tex]
[tex]m=-2[/tex]
As we know the point-slope form is:
[tex]y-y_1=m\left(x-x_1\right)[/tex]
So, the equation of the line will be:
[tex]y-y_1=m\left(x-x_1\right)[/tex]
[tex]y-5=-2\left(x-2\right)[/tex]
Add 5 to both sides
[tex]y-5+5=-2\left(x-2\right)+5[/tex]
[tex]y=-2x+9[/tex]
From the above calculation, we can verify that the determined equation is the same as the equation determines by Misty, hence, we conclude that Misty had correctly determined the equation of the linear function.
Find the slope of the line that contains the following ordered pairs. Show all work.
8.
(18,-7) and ( 18, 2)
Formula:
Slope:
Answer:
see below
Step-by-step explanation:
slope = (y₂ - y₁) / (x₂ - x₁) <=== formula
= (2 - (-7)) / (18 - 18)
= 9 / 0
= 0 <=== slope
Complete the square for the expression. Also, identify the resulting expression as a binomial squared.
x2 + 11x + ____
When completing the square is carried out on the quadratic [tex]x^2+11x[/tex] we get
[tex]x^2+11x+\dfrac{121}{4}[/tex]
when expressed as a binomial squared, we get
[tex]\left(x+\dfrac{11}{2}\right)^2[/tex]
To complete the square, we need to add a term to the expression
[tex]x^2+11x[/tex]
that would make it a perfect square. Generally, given the quadratic expression
[tex]x^2+bx[/tex]
to make it a perfect square, we have to add half the square of the coefficient of [tex]x[/tex]. That is, add [tex]\left(\frac{b}{2}\right)^2[/tex], or [tex]\frac{b^2}{4}[/tex] to the quadratic expression to get
[tex]x^2+bx+\dfrac{b^2}{4}[/tex]
which, when factored into a binomial squared becomes
[tex]\left(x+\dfrac{b}{2}\right)^2[/tex]
In our case, the quadratic [tex]x^2+11x[/tex] will become
[tex]x^2+11x+\dfrac{121}{4}[/tex]
and when expressed as a binomial squared, we get
[tex]\left(x+\dfrac{11}{2}\right)^2[/tex]
Learn more about completing the square here https://brainly.com/question/2055939
Answer:
[tex]x^{2}[/tex] +11x+ [tex]\frac{121}{4}[/tex]= [tex](x+\frac{11}{2} )^{2}[/tex]
Step-by-step explanation:
.
En la regla de la potencia, durante el proceso de integración, se ________ 1 al exponente, mientras que en la derivación se ________ 1 a dicho exponente. De igual forma, el exponente pasa dividiendo mientras que en la derivación pasa ________. Al último, agregamos la letra c, que significa constante" *
Answer:
a) adiciona, b) sustrae, c) multiplicando.
Step-by-step explanation:
A continuación, presentamos la respuesta correcta al ejercicio citado:
En la regla de la potencia, durante el proceso de integración, se adiciona 1 al exponente, mientras que en la derivación se sustrae 1 a dicho exponente. De igual forma, el exponente pasa dividiendo mientras que en la derivación pasa multiplicando. Al último, agregamos la letra C, que significa constante.
Razones
Derivación de una función potencial:
[tex]\frac{d}{dx}(x^{n}) = n\cdot x^{n-1}, n\ne 0[/tex]
Integración de una función potencial:
[tex]\int {x^{n}} \, dx = \frac{x^{n+1}}{n+1}+C,x\ne -1[/tex]
solve the system by graphing.
Answer:
(4,-5)
Step-by-step explanation:
A basketball player made 81 out of 100 attempted free throws. What percent of free throws was made?
Answer:
81%
Step-by-step explanation:
81 out of 100 is 0.81, which is 81%
Hope this helps plz mark brainliest if correct :D
Answer:
0.800
Step-by-step explanation:
Hope it Helps
Fifteen billiard balls are numbered 1 to 15. One billiard ball is selected at random. Determine the odds for and the odds against for (6 Points) a) selecting the number 7 b) selecting a number greater than 10
Answer:
Odds for & against selecting number 7 = 1/14 & 14
Odds for & against selecting number more than 10 = 4/11 & 11/4
Step-by-step explanation:
Odds for event = Prob (event) / Prob (no event)
Odds against event = Prob (no event) / Prob (event)
Odds for selecting number 7Prob (No. 7 chosen) = 1/15 , Prob (No. 7 not chosen) = 14/15
Odds for number 7 = (1/15) ÷ (14/15) = 1/14
Odds against number 7 = (14 / 15) ÷ (1/15) = 14
Odds for selecting number > 10Prob (No. > 10 chosen) = 4 / 15 , Prob (No. > 10 not chosen) = 11/15
Odds for No. > 10 = (4/15) ÷ (11/15) = 4/11
Odds against No. > 10 = (11/15) ÷ (4/15) = 11/4
What are some other ways the answer can be determined ( other than Multiplication)
Will mark and 5 STARS, THANKS
nobodys probably gonna answer this ): but if you can please do with the answers its for my homework :)
Answer
12 ) $100013 ) Y-Intercept = 1000 Slope = [tex]\frac{3000-2000}{4-2}[/tex] = [tex]\frac{1000}{2}[/tex] = [tex]\frac{500}{1}[/tex]14 ) [tex]\left(x^{1\ },\ y^{1}\right)\left(x^{2},\ y^{2}\right)[/tex] → [tex]\left(2\ ,\ 2000\right)\ \left(4\ ,\ 3000\right)[/tex] → [tex]\frac{3000-2000}{4-2}[/tex] → [tex]\frac{500}{1}[/tex]15 ) The meaning of the slope is the steepness of the line, in this graph, the meaning is 500 over 1.Hope this helps! <3
-9(m+3) +14=-49 please show work
Answer:
m=4
Step-by-step explanation:
−9(m+3)+14=−49
Step 1: Simplify both sides of the equation.
−9(m+3)+14=−49
(−9)(m)+(−9)(3)+14=−49(Distribute)
−9m+−27+14=−49
(−9m)+(−27+14)=−49(Combine Like Terms)
−9m+−13=−49
−9m−13=−49
Step 2: Add 13 to both sides.
−9m−13+13=−49+13
−9m=−36
Step 3: Divide both sides by -9.
−9m
−9
=
−36
−9
m=4
A teacher writes the algebraic expression 24푐+5푚+19.99 to represent the cost of supplies. She bought 24 packages of pencils, 5 packages of markers, and a beanbag chair. Identify variables, coefficients, and terms in the expression. Tell what each represents.
A teacher write the algebraic expression 24c + 5m + 19.99 to represent the cost of supplies. She bought 24 packages of pencils, 5 packages of markers, and a beanbag chair. Identify variables, coefficients, and terms in the expression. Tell what each represents.
Answer:
Step-by-step explanation:
The algebraic expression is written by the teacher as:
24c + 5m + 19.99
Purchased product are:
24 packages of pencils, 5 packages of markers, and a beanbag chair.
The variables are;
packages of pencils; packages of markers; a beanbag chair.
The coefficients are;
24, 5 and 19.99
This representation implies that;
The teacher bought:
24 "c"olored pencils;
5 packages of "m"arkers; &
19.99 represent the cost of each beanbag chair.
Marita's nose is 2 inches long and her head is 9 inches tall. Assume Mount Rushmore was carved using the same ratio. If Teddy Roosevelt's head is 60 feet tall, how long should his nose be? Round to the nearest foot, if necessary.
Answer:
13 1/3
Step-by-step explanation:
So the question is Marita's nose is 2 inches long and her head is 9 inches tall. Assume Mount Rushmore was carved using the same ratio. If Teddy Roosevelt's head is 60 feet tall, how long should his nose be? Round to the nearest foot, if necessary.
First divide 60 by 9 to figure out the first part of the ratio. So that is 60/9 or 6 2/3.
Then multiply 2 by 6 2/3 which is 13 1/3.
Finally when rounded to the nearest foot, it will be 13.
Ur welcome
x ÷ 9 = 4
plz help fast
Answer:
36
Step-by-step explanation:
transpose
x= 4×9
x= 36
Answer:
x = 36
Step-by-step explanation:
If we were to switch around the equation to multiplication, we would have 9 x 4 or 4 x 9 which is 36.
The diameter of a circular park is 98 m. Find the cost of fencing it at $4 per meter
Answer:
Answer. circumference = 151 m ( appr.) Ans :- The cost of fencing is Rs 604 .
What is the distance between A and B? Round your answer to the nearest tenth.
Answer:
6.4
Step-by-step explanation:
Just plug in the distance formula.
(4+1)^2+(1-5)^2
(5)^2+(-4)^
25+16
41
(square root 41) and get 6.4
I’ll give the brainliest if you help meeeee