lease provide the information about which coins are in the group.
How many coins of each denomination.
We are told that there are:
7 quarters
11 dimes
8 nickels
15 cents
in a bag, and are asked to find the probability of picking a nickel at random
So first we add the number of coins in the bag:
7+ 11 + 8 + 15 = 41 coins total
the number of nickels is : 8
therefore the number of sucesses divided the total number of coins is:
8 / 41 this is the actual probability when we give it in percent form:
8 / 41 = 0.195121 which is the decimal form that corresponds to 19.5121 percent.
But since we are asked to round it to the nearest hundredth of a oercent, we type: 19.51 %
x-8=29Write which property of equality you used
The given expression is
[tex]x-8=29[/tex]We have to use the addition property of equality, which means we are going to sum 8 on each side.
[tex]\begin{gathered} x-8+8=29+8 \\ x=37 \end{gathered}[/tex]Hence, the property is "the addition property of equality".Please help me with these graphs i am not sure which one should be correct in order to explain this to my son. I have attached the pictures of the graph What graph represents the system of linear inequalities?2x+y<1y≥1/2x+2
The given inequalities are
2x + y < 1
y ≥ x/2 + 2
The first step is to write both inequalities as equations. We have
2x + y = 1
y = x/2 + 2
The next step is to plot the straight line graphs for each equation. Since we are given options, we would find the x and y intercepts of each equation and select the graph that matches them.
Recall, x intercept is the value of x when y is zero
y intercept is the value of y when x is zero
For the first equation,
when x = 0, we have
2(0) + y = 1
0 + y = 1
y = 0. This means that y intercept = 0
when y = 0,
2x + 0 = 1
2x = 1
x = 1/2 = 0.5
This means that x intercept = 0.5
The line representing this equation should pass through the y axis at y = 0 and the x axis at x = 0.5
Also, the line would be dashed(not solid) because the solutions to the inequality do not include the values on the line.
For the second equation,
when x = 0, y = 0/2 + 2 = 0 + 2 = 2
when y = 0, we have
0 = x/2 + 2
x/2 = 0 - 2 = - 2
x = - 2 * 2 = - 4
The line representing this equation should pass through the y axis at y = 2 and the x axis at x = - 4
Also, the line would be a solid line because the solutions to the inequality include the values on the line.
The next step is to determine the shaded region for each inequality. Where the shaded regions overlap is the solution. The shaded regions in each option indicate the solution. We would pick points which we would test in each of the shaded regions
For the first option, let us pick a point in the shaded region. Let us pick x = - 2 and y = 2
We would plug these values in both inequalities and see if they satisfy it.
For the first,
2x + y < 1
y < 1 - 2x
Plugging in x = - 2 and y = 2, we have
2< 1 - 2(-2)
2 < 1 + 4
2 < 5
This is true
For the second,
y≥ x/2 + 2
Plugging in x = - 2 and y = 2, we have
2 ≥ -2/2 + 2
2 ≥ - 1 + 2
2 ≥ 1
This is also true
Thus, the first option is correct
Gianna went shopping for a new camera because of a sale. The price on the tag was $26, but Gianna paid $13 before tax. Find the percent discount.
The percent discount of the camera is 50%.
What is percentage discount?Percentage discount is a discount that is given to a product or service that is given as an amount per hundred.
In other words, the percent discount is list price minus the sale price then divided by the list price and multiplied by 100 to get a percentage.
Hence,
she bought the camera for $13 but the price tag is $26.
Therefore,
percentage discount = tagged price - sale price / tagged price × 100
tagged price = 26 dollars
sale price = 13 dollars
percentage discount = 26 - 13 / 26 × 100
percentage discount = 13 / 26 × 100
percentage discount = 1 / 2 × 100
Therefore,
percentage discount = 50%
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[tex](9x^{2} - 2x) - (5x^{2} -8x-3)[/tex]
Answer:
[tex]4x^{2} +6x+3[/tex]
Step-by-step explanation:
Distribute and multiply the 1.
[tex]1(9x^{2} -2x) - 1(5x^{2} -8x-3)[/tex]
Collect like terms and sort them in descending order.
[tex]9x^{2} -2x -5x^{2} +8x +3[/tex]
[tex]4x^{2} +6x+3[/tex]
What is the missing numerator in 1 1/8=?/16
Answer:
12
Step-by-step explanation:
12/18 is just. 11/6*2
a store pays $10 for a bracelet and the markup is 115%. A customer will also pay 5 and a half sale tax . what will be the total cost to the nearest cent ?
ANSWER:
$22.68
STEP-BY-STEP EXPLANATION:
Given:
Bracelet = $10
Markup percentage = 115% = 115/100 = 1.15
The markup amount can be calculated as follows:
[tex]\begin{gathered} \text{ markup amount = cost price }\cdot\text{ markup percentage} \\ \text{ replacing} \\ \text{markup amount }=10\cdot1.15=11.5 \end{gathered}[/tex]Therefore, the total price would be:
[tex]t=10+11.5=21.5[/tex]Now we apply sales tax for the price and calculate the price after tax, like this:
[tex]\begin{gathered} t=21.5+21.5\cdot\frac{5.5}{100} \\ t=21.5+1.1825 \\ t=22.6825\cong22.68 \end{gathered}[/tex]$22.68 is the total cost of the bracelet
If 7 ballpoint pens cost $9.66, how much will 12 pens cost? (100 points)
Answer:
16.56
Step-by-step explanation:
9.66/7
=1.38 each
1.38x12=16.56
Answer:
16.56
Step-by-step explanation:
Which statements about the graph of the function ) =22-X-6 are true? Select two options3The domain of the function is falx2)The range of the function is all real numbersThe verter of the function is7227The function has two x-intercepts.The function is increasing over the interval (-5)
True statements about the graph of the function f(x) = 2 x 2 - x -6 include:
The range of the function is all real numbers
The function has two x-intercepts.
What is function?In mathematics, functions are the foundation of calculus. Functions are specific types of relationships. In math, a function is represented as a rule that produces a unique output for each input x. In mathematics, mapping or transformation is used to represent a function.
These functions are typically denoted by letters such as k, g, and h. The domain is defined as the set of all the values that the function can accept while it is defined. The range contains all of the values returned by the function in question. The co-domain is the set of values that have the potential to be outputs of a function.
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What is the generator for the sequence: 81, -27, 9, -3, 1
a. 3
b. -3
c. -1/3
d. 1/3
e. None
5,624 ÷ 72 using estimation
Answer: 5,624 rounded would be 5,600 and 72 rounded would be 70.
5,600/70= 80
Step-by-step explanation:
2
(b) The area of a rectangular painting is 8134 cm².
If the length of the painting is 98 cm, what is its width?
Width of the painting: cm
Answer:
Step-by-step explanation:
To answer this question do 8134 cm²÷98 cm
8,134÷98=83cm
123456Previous Activity78910Juanita wants to perform row operations on the augmented matrix for the system below.x+ 2y = 3-x+y+z=2y-2z=-3Which matrix should Juanita use to perform the operations?1 2 3 0-⠀⠀⠀⠀-1 1 1 21 -2 -3 0Next A
The given system of equation is
x + 2y + 0z = 3
- x + y + z = 2
0x + y - 2z = - 3
The augumented matrix is formed by using the coefficient of the variables. The required matrix is shown below
[tex]\begin{bmatrix}{1} & {2} & {0} & {3} \\ {-1} & {1} & {1} & {2} \\ {0} & {1} & {-2} & {-3} \\ {} & {} & {} & {}\end{bmatrix}[/tex]The correct option is the second one
This test is timed so i need it quickly
Answer: D!!
Step-by-step explanation: No explanation so you can move on quickly!!!!:))
Let f(t) = 3 + 2, g(x) = -x^2?, and
he) = x - 2/5. Find the indicated value.
Question 22
To find h(f(-9)), first, we need to find f(-9) substituting x = -9 into f(x), as follows:
[tex]\begin{gathered} f(x)=3x+2 \\ \text{ Substituting x = -9,} \\ f\mleft(-9\mright)=3(-9)+2 \\ f(-9)=-27+2 \\ f(-9)=-25 \end{gathered}[/tex]Substituting f(-9) = -25 into h(f(-9)), we get h(-25).
To evaluate h(-25) we have to substitute x = -25 into h(x), as follows:
[tex]\begin{gathered} h(x)=\frac{x-2}{5} \\ \text{ Substituting with x = -25,} \\ h(x)=\frac{-25-2}{5} \\ h(x)=-\frac{27}{5} \end{gathered}[/tex]Down Under Boomerang, Inc., is considering a new 3-year expansion project that requires an initial fixed asset investment of $2.37 million. The fixed asset falls into the 3-year MACRS class (MACRS schedule). The project is estimated to generate $1,765,000 in annual sales, with costs of $664,000. The project requires an initial investment in net working capital of $360,000, and the fixed asset will have a market value of $345,000 at the end of the project. a. If the tax rate is 21 percent, what is the project’s Year 0 net cash flow? Year 1? Year 2? Year 3? (A negative answer should be indicated by a minus sign. Do not round intermediate calculations and enter your answers in dollars, not millions of dollars, rounded to two decimal places, e.g., 1,234,567.89.) b. If the required return is 11 percent, what is the project's NPV? (Do not round intermediate calculations and enter your answer in dollars, not millions of dollars, rounded to two decimal places, e.g., 1,234,567.89.)
4. A fruit stand sells boxes of apples. Each box weighs the same amount. The table shows the number of boxes and the total number of pounds. AppIGN Number of Boxes Tocal Number of Pounds И. 7 8 72 10 Which of the following correctly describes the relationship in the table? A. Number of boxes + 4 = total number of pounds B. Number of boxes x 9 + total number of pounds C. Number of boxes - 9 total number of pounds D. Number of boxes x 6 = total number of pounds
From the table it can be observed if we multiply the number of boxes by 9, then it gives total number of pounds for the corresponding number of boxes.
As 4 multiply by 9 is 36, which is total number of pounds for 4 boxes. In similar manner total number of pounds can be obtained for different number of boxes.
So answer is,
[tex]\text{ Number of boxes}\times9=\text{ total number of pounds}[/tex]Option B is correct.
In the diagram of LPN below, QM ||PN, QP=32, LM=10, and MN=40. What is the length of LP? L 10 M M 32 40 P N Answet Submit Answer
Identify the missing terms in the polynomial.x3-9O x2-term, x-termSO x-termO x4-term, x2-term, x-termO x-term
We must identify the missing terms in the polynomial:
[tex]x^3-9.[/tex]The general form of a 3th grade polynomial is:
[tex]a_3\cdot x^3+a_2\cdot x^2+a_1\cdot x+a_0.[/tex]We see that the missing terms are x² and x.
Answer
The missing terms are: x2-term, x-term.
Which pair of variables would most likely have a positive association?
Answer:
• The age of a kitten and its weight
,• Temperature and the sales of ice cream
,• The number of notebooks bought and the total cost.
Explanation:
Two variables have a positive association when an increase in the values of one of the variables also leads to an increase in the value of the second variable.
From the given options, those with a positive association are explained below:
(a)The age of a kitten and its weight
The older a kitten gets, the more the weight of the kitten until it gets to adulthood.
(b)Temperature and the sales of ice cream
When the temperature increases, people tend to purchase more ice cream.
(c)The number of notebooks bought and the total cost.
• If 1 notebook costs $5, then:
,• 2 notebooks will cost $10.
As the number of notebooks bought increases, the total cost also increases.
The owner of a small restaurant bought 75 kilograms of rice. Each week, the restaurant uses 4.5 kilograms of rice. Function r gives the remaining amount of rice, in kilograms, as a function of the number of weeks since the restaurant owner bought the rice.6 weeks | kilograms of rice left12 weeks | kilograms of rice leftw weeks | kilograms of rice
The total kg of rice bought is 75kg
Each week, 4.5kg is used,
Let the number of weeks be represented by n
The remaining amount of rice is represented by r
The relationship between the values above can be given as,
[tex]r=75-4.5n[/tex]For 6 weeks, the kilogram of rice left where n = 6 is,
[tex]\begin{gathered} r=75-4.5n \\ r=75-4.5(6)=75-27=48\operatorname{kg} \end{gathered}[/tex]For 12 weeks, the kilogram of rice left where n = 12 is,
[tex]\begin{gathered} r=75-4.5n \\ r=75-4.5(12)=75-54=21\operatorname{kg} \end{gathered}[/tex]For w weeks, the kilogram of rice left where n = w is,
[tex]\begin{gathered} r=75-4.5n \\ r=75-4.5(w)=75-4.5w \end{gathered}[/tex]Hence, after 6 weeks, the remaining rice left is 48kg
Hence, after 12 weeks, the remaining rice left is 21kg
Hence, after w weeks, the remaining rice left is (75-4.5w)kg
The first three terms of a sequence are given. Round to the nearest thousandth (if necessary).5,4, 16/5... Find the 7th term.
In order to find the 7th of the sequence, first let's find the common ratio of the sequence.
To do so, let's divide one term by the term before:
[tex]q=\frac{4}{5}[/tex]Now, we can use the following formula to find the 7th term:
[tex]a_n=a_1\cdot q^{n-1}[/tex]For n = 7, we have:
[tex]\begin{gathered} a_7=5\cdot(\frac{4}{5})^6 \\ a_7=1.311 \end{gathered}[/tex]What is the variable being tested in an experiment?0 A.response variableO B. placeboO C.control variableOD.explanatory variable
Given
Variables
Find
Which variable being tested in an experiment
Explanation
The dependent variable is the variable that is being measured or tested in an experiment
response variable is often referred as dependent variable.
Final Answer
hence , the correct option is A.
Find the remainder when f(x) = x³ - 4x² - 6x-3 is divided by x + 1.
A.-2
B. -14
C. 6
D. -12
The remainder of the given function [tex]x^{3} -4x^{2} -6x-3[/tex] is -2, founded by using division of polynomial
The correct option is option A).
What is division of polynomial?
Polynomial division is a generalized variant of the well-known arithmetic operation known as division. It is an algorithm for dividing a polynomial by another polynomial of the same or lower degree.
Our given polynomial is [tex]x^{3} -4x^{2} -6x-3[/tex]
We have to divide this polynomial by x+1 .
This can be done by
Therefore the remainder on division of the polynomial is -2
Hence the correct option is A)
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What is the perimeter, P, of a rectangle that has a length of x + 6 and a width of y-1?OP=x+y+5OP=x+y-7OP=2x + 2y + 10OP=2x+2y-10
GIVEN
A rectangle with length (x + 6) units and width (y - 1) units.
TO FIND
The perimeter of the rectangle.
SOLUTION
The perimeter of a rectangle is calculated using the formula:
[tex]P=2\left(l+w\right)[/tex]Substitute the values of the length and width into the formula:
[tex]P=2(x+6+y-1)[/tex]Simplify:
[tex]\begin{gathered} P=2(x+y+5) \\ P=2x+2y+10 \end{gathered}[/tex]ANSWER
[tex]P=2x+2y+10[/tex]Dog kennel charges each owner a registration fee + a daily amount for the # of days a dog is boarded. The total bill for 1 owner was 115 for 5 days, another was 151 for boarding for 7 days. Are the following true or false
1. a total cost for 10 days is 180
2. a total cost for 14 days is 277
3. a total cost for 1 day is 43
Answer:
Find cost difference between the two days
151 - 115 = 36
we can assume it costs 18$ a day
To find registration fee
five days = 18 x 5 = 90$
115 - 90 = 25
The registration fee is 25$
The formula is 18x + 25. Where x is the amount of days the dog is boarded
1. False
2. True
3. True
Can someone help me with this geometry question? My instructor said I was wrong?
Question ID: 97725The movement of the progress bar may be uneven because questions can be worth more or less (including zero) depending on your answer.A semi-circle sits on top of a rectangle to form the figure below. Find its area and perimeter. Use 3.14 for Te.3 in4 inA = 37.12 square inches, Pz 16.28 inchesA = 18.28 square inches, P 22.56 inchesA = 37.12 square inches, P = 22.56 inchesA ~ 18.28 square inches, P 16.28 inches
Solution
For this case we can find the area as the sum of the rectangle and the semicircle so we have this:
A1= 3in * 4in= 12 in^2
A2 = (pi/2) *(2in)^2 = 6.28 in^2
then the total area is:
A= A1+ A2= 12+ 6.28 in^2 = 18.28 in^2
And then the perimeter similarly we have:
P= 2*4 in + 2*3in + 2pi*(4in/2) = 8+ 6+ 12.56 in= 26.56in
Then the final answer is:
Area ~18.28 in^2 and Perimeter ~26.56 in
the ladder to the slide is 21 feet high. how long is the slide
To find the slide we can us the pythagorical theorem that say:
[tex]h=\sqrt[]{l^2_1+l^2_2}[/tex]Where l1 and l2 iare the leg of the triangle so in our problem will be:
[tex]\begin{gathered} h=\sqrt[]{28^2+21^2} \\ h=\sqrt[]{784+441} \\ h=\sqrt[]{1225} \\ h=35 \end{gathered}[/tex]So the slide is 35 ft
Yea I do agree that with this one ☝️ I will be coming
Solution
- The equation for the potential given is:
[tex]V(t)=320e^{-3.1t}[/tex]Question 1:
- To find when the potential is 150V, we simply substitute the value of V = 150 into the equation and then find the corresponding value of t.
- Thus, we have:
[tex]\begin{gathered} V=150 \\ \\ 150=320e^{-3.1t} \\ \\ \text{ Divide both sides by 320} \\ \\ e^{-3.1t}=\frac{150}{320}=\frac{15}{32} \\ \\ \text{ Take the natural log of both sides} \\ \\ \ln e^{-3.1t}=\ln(\frac{15}{32}) \\ \\ -3.1t=\ln(\frac{15}{32}) \\ \\ \text{ Divide both sides by -3.1} \\ \\ t=-\frac{1}{3.1}\ln(\frac{15}{32}) \\ \\ t=0.2444s\text{ \lparen To 4 decimal places\rparen} \end{gathered}[/tex]Question 2:
- The rate at which the changing occurs is gotten by differentiating the function with respects to time.
- That is,
[tex]\begin{gathered} V(t)=320e^{-3.1t} \\ \\ V^{\prime}(t)=\frac{d}{dt}(320e^{-3.1t}) \\ \\ V^{\prime}(t)=320(-3.1e^{-3.1t}) \\ \\ V^{\prime}(t)=-992e^{-3.1t} \end{gathered}[/tex]- Now that we have the expression for the rate of change of potential with time, we can proceed to find how fast the changing of potential V is happening at t = 0.2444s.
- Thus, we have:
[tex]\begin{gathered} V^{\prime}(t)=-992e^{-3.1t} \\ put\text{ }t=0.2444 \\ \\ V^{\prime}(t)=-992e^{-3.1\times0.2444} \\ \\ \therefore V^{\prime}(t)=-465.02125...\approx-465.0\text{ v/s} \end{gathered}[/tex]Question 3:
- The voltage is changing at -50v/s when we substitute V'(t) = -50 into the equation for V'(t).
- We have that:
[tex]\begin{gathered} V^{\prime}(t)=-992e^{-3.1t} \\ \\ V^{\prime}(t)=-50 \\ \\ -50=-992e^{-3.1t} \\ \\ \text{ Divide both sides by -992} \\ \\ e^{-3.1t}=\frac{-50}{-992}=\frac{25}{496} \\ \\ \text{ Take the natural log of both sides} \\ \ln e^{-3.1t}=\ln(\frac{25}{496}) \\ \\ -3.1t=\ln(\frac{25}{496}) \\ \\ \text{ Divide both sides by -3.1} \\ \\ \therefore t=-\frac{1}{3.1}\ln(\frac{25}{496}) \\ \\ t=0.96377...\approx0.9638seconds\text{ \lparen To 4 decimal places\rparen} \end{gathered}[/tex]Final Answers
Question 1: 0.2444 seconds
Question 2: -465.0v/s
Question 3: 0.9638 seconds
Cal made the graph at right. Use the graph to write a problem involving fractions.
We need to come up with a question involving the graph.
Very simple!
We can ask how much time in a day Cal spends for different activities.
We can say:
According to the graph, how much time of the day does Cal spend studying and sleeping?
answering this question:
[tex]\begin{gathered} \frac{1}{8}+\frac{1}{3} \\ =\frac{3(1)+8(1)}{3\times8} \\ =\frac{3+8}{24} \\ =\frac{11}{24} \end{gathered}[/tex]