Erika has three pieces of ribbon. Each peice is 25 yards long.she needs to cut pieces that are 22inches long. What is the greatest number of 22-inch pieces that she can cut from the three pieces of ribbon?
Erika has three pieces of ribbon, each of 25 yards' length.
Then in total she has 3·25=75 yards of ribbon.
Since 1 yd = 36 in, then 75 yd = 75·36=2700 in.
Now she needs to cut pieces that are 22 inches long, thus
[tex]2700:22=122\dfrac{16}{22}[/tex] pieces.
Answer: she can cut from the three pieces of ribbon 122 pieces that are 22 inches long.
match each expression to its equivalent standard form
Answer:
1. x² + 2x + 2
2. x² + 4
3. x² - 4x + 8
Step-by-step explanation:
(1) ( x+1+i ) ( x+1-i )
= ( x+1 )²- i² [ Since ( a+b ) ( a-b ) = a² - b² ]
= x² + 1 + 2x - ( √-1 )²
= x² + 1 + 2x + 1
= x² + 2x + 2
(2) ( x+2i ) ( x - 2i )
= x² - (2i)² [ ( a+b ) ( a-b ) = a² b²
= x² - 4i²
= x² - 4 (-1) [Since i² = -1 ]
= x² + 4
(3) ( x - 2i - 2 ) (x + 2i - 2 )
= ( x-2 )² - ( 2i )² [ ( a+b ) ( a-b ) = a² - b² ]
= x² + 4 - 4x - 4 ( i )²
= x² + 4 - 4x - 4 ( -1 )²
= x² - 4x + 4 + 4
= x² - 4x + 8
Suppose a and b are independent events if P(A) =0.4 and P(B) =0.45 what is P(A*B)?
Answer:
P(A*B) = 0.18
Step-by-step explanation:
Given : We are given that a and b are independent events .
P(A) = 0.4
P(B) = 0.45
Solution :
Since , A and B are independent events so by
[tex]P(A*B) = P(A\cap B)=P(A)\ast P(B)[/tex]
⇒[tex]P(A*B) = 0.4\times 0.45[/tex]
[tex]P(A*B) = 0.18[/tex]
Thus, [tex]P(A*B) = 0.18[/tex]
classify the following triangle as acute, obtuse, or right
Answer:
Step-by-step explanation:
Alright, lets get started.
Once the triangle has all angles less than 90 degree, is called Acute triangle.
Once the triangle has one angle more than 90 degree, is called Obtuse triangle.
Once the triangle has one angle equal to 90 degree, is called Right triangle.
So, the given triangle has its angle 55, 55, 70.
Each angle is acute angle, so the triangle is Acute triangle. : Answer
Hope it will help :)
Devin borrowed $1,058 at 13 percent for nine months.
What will he pay in interest?
How much is his total payment?
What will be his monthly payment?
Subtract 1.05 from a certain number. Multiply the difference by 0.8, add 2.84 to the product then divide the sum by 0.01 and get 700. What is the number?
Simplify this algebraic expression
Z-4/4+8
A. Z-7
B.z+7
C.z+9
D.z-3
A telemarketer will make 25 calls in one hour. the probability of making a sale on any given call is .09. what is the probability that he will make at least one sale during the hour? (answer to the third decimal place.)
Trip has 15 coins worth 95 cents. four of the coin are each worth twice as much as the rest. construct a math argument to justify the conjecture that trip has 11 nickels and 4 dimes
Required math argument to justify the conjecture that trip,
11 x 5 + 4 x 10 = 95
What is multiplication?In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.
here, we have,
Trip has 15 coins worth 95 cents. four of the coin are each worth twice as much as the rest.
So, we get,
Required math argument to justify the conjecture that trip,
11 x 5 + 4 x 10 = 95
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A ski resort can manufacture enough machine-made snow in 12 h to open its steepest run, whereas it would take 36 h of naturally falling snow to provide enough snow. if the resort makes snow while it is snowing naturally, how long will it take until the run can open?
If the resort makes snow while it is snowing naturally then for 9 hours it will take until the run can open.
What is an arithmetic operation?The four basic mathematical operations are the addition, subtraction, multiplication, and division of two or even more integers. Among them is the examination of integers, particularly the order of actions, which is crucial for all other mathematical topics, including algebra, data organization, and geometry.
As per the given information in the question,
The pace at which a resort creates snow is t/12,
the rate at which snow falls naturally is t/36.
(1/12) + (1/36) = (1/t)
Take LCM,
(3/36) + (1/36) = (1/t)
1/t = 4/36
4t = 36
t = 9 hours.
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help me asap please let me down
Jennifer has carpet in her square bedroom. She decides to also purchase carpet for her living room which is rectangular in shape and 9 feet longer than her bedroom. The area of the carpet required in the living room is given by the quadratic expression below, where x represents the side length, in feet, of the carpet in the bedroom. Match each part of the expression with what it represents. Tiles :
1 the width of the carpet in the living room
2 the length of the carpet in the living room
3 the area of the carpet in the bedroom
4 the increase in the area of carpet needed for the living room
Pairs :
1 the second-degree term of the expression x2 + 9x
2 the monomial, x, a factor of the expression x2 + 9x
3 the first-degree term of the expression x2 + 9x
4 the binomial, (x + 9), a factor of the expression x2 + 9x
Answer:
1. the width of the carpet in the living room
Ans. The monomial, x, a factor of the expression x2 + 9x
2 the length of the carpet in the living room
Ans . the binomial, (x + 9), a factor of the expression x2 + 9x
3 the area of the carpet in the bedroom
Ans. the second-degree term of the expression x2 + 9x
4. the increase in the area of carpet needed for the living room
Ans. the first-degree term of the expression x2 + 9x
Step-by-step explanation:
Jennifer has carpet in her square bedroom.
Formula of area of square = [tex]a^2[/tex]
Where a is the side length
Side length of her bedroom is x
Area of the bedroom is [tex]x^2[/tex]
So, area of carpet for bedroom is [tex]x^2[/tex]
She decides to also purchase carpet for her living room which is rectangular in shape and 9 feet longer than her bedroom. (no change in width)
So, length of living room = 9+x
Width = x
Area of living room = [tex]x*(9+x)[/tex]
[tex]=x^{2} +9x[/tex]
So, increase in area of carpet for living room in comparison to the area of carpet for bedroom is 9x
1. the width of the carpet in the living room
Ans. The monomial, x, a factor of the expression x2 + 9x
2 the length of the carpet in the living room
Ans . the binomial, (x + 9), a factor of the expression x2 + 9x
3 the area of the carpet in the bedroom
Ans. the second-degree term of the expression x2 + 9x
4. the increase in the area of carpet needed for the living room
Ans. the first-degree term of the expression x2 + 9x
An exponential function is graphed for all real numbers. This includes which of the following sets of numbers?
In addition to linear, quadratic, rational, and radical functions, there are exponential functions. Exponential functions have the form f(x) = bx, where b > 0 and b ≠ 1. Just as in any exponential expression, b is called the base and x is called the exponent.
An example of an exponential function is the growth of bacteria. Some bacteria double every hour. If you start with 1 bacterium and it doubles every hour, you will have 2x bacteria after x hours. This can be written as f(x) = 2x.
Before you start, f(0) = 20 = 1
After 1 hour f(1) = 21 = 2
In 2 hours f(2) = 22 = 4
In 3 hours f(3) = 23 = 8
and so on.
With the definition f(x) = bx and the restrictions that b > 0 and that b ≠ 1, the domain of an exponential function is the set of all real numbers. The range is the set of all positive real numbers. The following graph shows f(x) = 2x.
classify the quadrilateral using the name that best describes it.
which of the following is equal to the rational expression below when x=11?
x^2-121/x+11
a. x-11
b. x+11
c. x+11/x-11
d. 1/x-11
The algebraic expression that is equivalent to the given rational expression is (x-11), but when we substitute x=11 into the expression, we receive 0. However, this leads to an indeterminate form in the original rational expression.
Explanation:The rational expression given in the question is x^2-121/x+11. If we factorize x^2-121, we'll get (x-11)(x+11), because x^2-121 is a difference of squares. Now, the expression becomes: (x-11)(x+11)/(x+11). We see that (x+11) on numerator and denominator will cancel out each other. This leaves us with (x-11).
Now, let's substitute x=11 in (x-11). We obtain 11-11 which equals 0. So the correct answer is (x-11), but we get 0 when we substitute x=11 into the expression. This actually results in an indeterminate form because the original rational expression becomes a 0/0 form, which points to a situation of undefined or indeterminate form.
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B. how many 350-day periods are there in one year? (use 365 days in a year. round your answer to 4 decimal places.)
Find the area of this figure.
Use 3.14 for pi.
Round answer to the nearest hundredth.
Area = ____ ft2
The total area of the figure, which includes a rectangle and a semicircle, is 29.00ft². This is achieved by calculating the individual areas of the rectangle and semicircle, and then adding them together.
Explanation:The figure in question is composed of a rectangle and a semicircle. The area of a rectangle is found by multiplying its length by its width, so the area of the rectangle part is 7.2ft * 3.4ft = 24.48ft². The area of a semicircle is found using the formula ½πr², where r is the radius of the circle. In this case, the diameter of the semicircle is the same as the width of the rectangle (3.4ft), so the radius will be half of that (1.7ft). Therefore, the area of the semicircle is ½π(1.7ft)² = 4.52ft² (rounded to the nearest hundredth). So, the total area of the figure is the sum of the rectangle and the semicircle area, which equals to 24.48ft² + 4.52ft² = 29.00ft².
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The area of the figure which is composed of a semi-circle and a rectangle is approximately 23.24 ft².
What is the area of the composite figure?The figure in the image is composed of a semi-circle and a rectangle.
The area of a semicircle is expressed as;
A = 1/2 × πr²
The area of a rectangle is expressed as;
Area = length × width
From the diagram;
Diameter = 3.4 ft
Radius r = 1.7 ft
Width of the rectangle = 3.4ft
Length = 7.2ft - 1.7ft = 5.5ft
Now, to determine the area of the figure, we sum the area of the semi-circle and the area of the rectangle.
Area = ( 1/2 × πr² ) + ( length × width )
Plug in the values:
Area = ( 1/2 × 3.14 × 1.7² ) + ( 5.5 × 3.4 )
Area = ( 1/2 × 3.14 × 2.89 ) + ( 5.5 × 3.4 )
Area = 4.5373 + 18.7
Area = 23.24 ft²
Therefore, the total area has a measure of 23.24 ft².
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Find the perimeter of a polygon with sides 11ft 7ft 18ft 22ft 14ft and 23.5ft
Perimeter of a polygon is equal to sum of all sides of the polygon
Sides of the polygons are 11 ft, 7 ft, 18 ft, 22 ft, 14 ft and 23.5 ft
Sum of all sides of the polygon is given by = 11 ft + 7 ft + 18 ft + 22 ft + 14 ft + 23.5 ft
= 95.5 ft
Perimeter of a polygon = 95.5 ft
Hope this helps..!!
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Write a decimal that is equivalent to three and ten hundredths.
Answer:
The number in decimal expression is:
3.1
Step-by-step explanation:
We have to write the given number in a decimal expression.
The information about the number is given as:
three and ten hundredths.
Hence, in decimals the number is written as:
3.1
( since , three is to be written before the decimal point
as 3 is 3.0
and the number 10 is to be written after the decimal .
since, 10/100=0.1)
Hence, the number in decimal expression is:
3.1
The decimal equivalent to three and ten hundredths is 3.1
How to write decimal numberthree and ten hundredths.3 is in the unit place1 hundredth = 1/100 = 0.01
10 hundredth = 10/100 = 0.1
Therefore,
three and ten hundredths
= 3 + 0.1
= 3.1
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Pete bagged 18 bags in 9 minutes. How many bags did he bag in 1 minute.
PLEASE HELP WITH THIS QUESTION!!??
Jasmine buys a turkey every year. The first time she bought a turkey, in Year 0, it cost $15.50. She notices the price is getting more expensive, at a rate of 2% per year.
Jasmine sketches a graph of the situation.
Which statement is true?
A. The graph decreases from left to right.
B. The point (5, 16.78) is on the graph.
C. The point (1, 16.13) is on the graph.
D. The graph increases from left to right.
A deck of cards has 52 cards. If p is the number of players and each player receives 3 cards, which expression represents the number of cards remaining in the deck?
A 3/52
B 52/3
C 52-3p
D (52-3)p
The expression represents the number of cards remaining in the deck will be 52 - 3p. Then the correct option is C.
What is Algebra?Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.
The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.
A deck of cards has 52 cards. If p is the number of players and each player receives 3 cards. Then the expression is given as,
⇒ 52 - 3p
The expression represents the number of cards remaining in the deck will be 52 - 3p. Then the correct option is C.
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Matt paid $55 at a restaurant. That amount included a 10% tip. What was the check amount before the tip?
Answer:
The amount before the tip is $50.
Step-by-step explanation:
Given : Matt paid $55 at a restaurant. That amount included a 10% tip.
To find : What was the check amount before the tip?
Solution : We have given
Matt paid = $55 .
amount included a 10% tip.
Let the amount before the tip = x.
Tip amount = 10% of x is
[tex]\frac{10 x}{100}[/tex] = 0.1 x .
Tip amount = 0. 1 x
Total amount = x + 0.1x = 55 .
1.1 x = 55.
On dividing both sides by 1.1
x = 50.
So, the amount before the tip is $50.
Therefore, The amount before the tip is $50.
the length of a train car is 50.6 feet. This is 5.8 feet less than 6 time the width. What is the width?
Factor the expression. r2 – 49
Answer:
(r-7)(r+7)
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Cleo wants to join a gym. There is an initiation fee of $24.99 and each month of membership costs $12.50. If Cleo pays $174.99, how long will his membership last?
The membership will last for about 1 year.
What is expression?Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation.
Let's start by subtracting the initiation fee from the total amount Cleo paid:
$174.99 - $24.99 = $150
This represents the total amount Cleo will pay for the monthly membership fees.
To find out the number of months of membership this represents, we divide by the monthly fee:
$150 ÷ $12.50 = 12
Therefore, Cleo's membership will last for 12 months.
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Find the value of x. Round to the nearest tenth. The diagram is not drawn to scale.
Zane bought two shirts for$26 each.Three shirts for $19.25 each.And one pair of jeans for$68.50.
How much did he spend?
Write an expressions?
Find the shortest distance, d, from the point (8, 0, −6) to the plane x + y + z = 6. d =
The distance between the point P( 8 , 0 , -6 ) to the plane x + y + z = 6 is
d = ( 4 / √3 )
What is the distance between a point and a plane?
The distance between a point and a plane is the smallest perpendicular distance between the point and the plane in question. In other words, the length of the perpendicular parallel to the normal vector dropped from the given location to the provided plane is the shortest distance between two points.
Let the point be P( x₀ , y₀ , z₀ )
Let the plane be Ax + By + Cz + D = 0
The distance between point P and plane is
d = | Ax₀ + By₀ + Cz₀ + D | / √ ( A² + B² + C² )
Given data ,
Let the point be P( x₀ , y₀ , z₀ ) = P ( 8 , 0 , -6 )
Let the equation of plane be x + y + z = 6
A = 1
B = 1
C = 1
D = -6
Now , the distance between the point and the plane is given by ,
d = | Ax₀ + By₀ + Cz₀ + D | / √ ( A² + B² + C² )
Substituting the values in the equation , we get
d = | 8 + 0 + ( -6 ) + ( -6 ) | / √ ( 1 + 1 + 1 )
d = | 8 - 6 - 6 | / √3
d = | -4 | / √3
d = 4 / √3
Therefore , the value of d = 4 / √3
Hence , The distance between the point P( 8 , 0 , -6 ) to the plane
x + y + z = 6 is d = ( 4 / √3 )
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Natalia paid $38.95 for three medium sized pizzas and a salad. Solve an equation to find the cost of one pizza,p, if Natalia paid $11.98 for the salad
The linear equation is defined as the equation, which can be represented in the form of y=mx+b.
The cost of one pizza is $ 8.99.
Given that,
Cost of salad = $ 11.98Let the cost of pizza be x.The three pizzas cost will be 3x. The total cost of the food items = $ 38.95Now, using the linear equation formula:
Total cost = Cost of three pizzas + Cost of Salad
Substituting the values, the equation becomes:
$ 38.95 = 3x + $ 11.98
$ 38.95 - $ 11.98 = 3x
$ 26.97 = 3x
x = [tex]\dfrac{26.97}{3}[/tex]
x = $8.99
Therefore, the value of each pizza is $8.99.
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