The total duration of the phone call was 10 minutes.
Given that, by using Company A's calling plan, the cost of an overseas phone call is a $0.95 connection fee plus 18 cents per minute. If the total cost of the call is $2.75 and we have to calculate the time how long was the phone call.
Let the number of minutes a phone call held be x.
Now, we will be representing the above given information in terms of linear equation and then solve for the value of x which will give us the number of minutes the phone call held.
Total cost = $0.95 + $0.18x
$2.75 = $0.95 + $0.18x
2.75 = 0.95 + 0.18x
2.75 - 0.95 = 0.18x
1.8 = 0.18x
1.8/0.18 = x
10 = x
Therefore, the call will go 10 minutes long.
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A student states that a triangle can be formed with side lengths 2 in, 3 in, and 6 in. is the student correct? why, or why not? yes, because 2 3 < 6 yes, because 6 2 > 3 no, because 2 3 < 6 no, because 6 2 > 3
A student is not correct when he stated that a triangle can be formed with side lengths 2 in, 3 in, and 6 in because 2 + 3 < 6.
A triangle is a polygon with three sides and three vertices.
To know if a set of numbers is a valid measure of the sides of a triangle, it must follow the Triangle Inequality Theorem which states that the sum of any two sides must be greater than the third side, such that a + b > c, a + c > b, and b + c > a.
Let a = 2, b = 3 , c = 6
a + b > c : 2 + 3 > 6 5 > 6 False
a + c > b : 2 + 6 > 3 8 > 3 True
b + c > a : 3 + 6 > 2 9 > 2 True
If at least one of these statements does not hold true, the measurements can't be the sides of a triangle.
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3(4x - 5) - 2 (x - 3) = 7
Can you please simplify this for me?
Step-by-step explanation:
12x - 15 - 2x + 6 = 7
10x - 9 = 7
10x = 16
x = 16/10
x = 8/5
Your friend invested $1000 in an account that pays 6% annual interest. How much interest will your friend have after her college graduation in 4 years?
c. Is the solution of the equation the final answer to the problem?
The solution of the equation is the final answer to the problem , $ 240 .
Calculating Simple Interest :
Simple Interest = ( P * R * N ) / 100
where P = Principal Amount
R = Rate of Interest
and N = No. of years for which investment is done
According to question :
P = 1000
R = 6
N = 4
Hence ,
Simple Interest = ( 1000 * 6 * 4 ) / 100
= 240
Therefore , after college graduation in 4 years the interest received would be $240 .
The solution of the equation is the final answer to the problem .
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Review the graph. A student spends 16.5 hours studying and receives a mark of 61.4%. Which statement describes this result?
Using the line of best fit, the correct statement that describes this result is given by:
D. The result is an outlier and there is no gap in the data.
What is the missing information?The statements are missing, and are given as follows:
A. The result is not an outlier and there is a gap in the data.
B. The result is not an outlier and there is no gap in the data.
C. The result is an outlier and there is a gap in the data.
D. The result is an outlier and there is no gap in the data.
What does the line of best fit mean?The line of best fit gives the expected exam score for a student that studies x hours. For example, for a student that studies 16 hours, the expected score is of 90.
The actual score is 61.4%, which is significantly less than the expected score, meaning that there is an outlier. However, there are no gaps in the data-set, as as the line considers students between 0 and 20 hours, and 16 is in this interval.
This means that option D is correct.
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Determine if the sequence below is it arithmetic or geometric in determine the common difference/ratio in the simplest form 125,25,5
The sequence given by the terms 125,25,5 is a geometric sequence with common ratio 1/5.
In a geometric sequence, each term following the first is found by multiplying the preceding one by a constant, non-zero quantity known as the common ratio.
The nth term of a geometric series with first term a and common ratio r is given by [tex]a_n=ar^{n-1}[/tex] .
In the given sequence, the first term denoted by a is 125. The second term is 25 and the third term is 5.
Ratio of the second term to first term = 25/125 = 1/5
And the ratio of third term to second term is = 5/25 =1/5
Hence since the ratios are equal therefore the sequence is geometric, and the common ratio is 1/5 .
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2 You hang two strands of Decorative light strand one change color every 30 seconds straight to change every 45 seconds both strands just change color how many seconds will the strands change color at the same time
The two strands of Decorative light will shine at same time after every 15 seconds.
What is defined as the Highest common factor?The greatest of all their common factors is the Highest Common Factor (HCF) of more than one number. As a result, it is also known as the greatest common factor (GCF).There isn't an exact formula for determining the greatest common factor of two numbers. However, when considering prime factorization, we can write a statement that aids in evaluating the greatest common factor of more than one number.The stated condition are-
The light strand one change color every 30 seconds.
The light strand second change color every 45 seconds.
Prime factorization of both number are;
30 = 2×3×5
45 = 3×3×5
The numbers with highest power are;
HCF(30, 45) = 3×5 = 15.
Thus, the time after which both the light strands will change colour at the same time is 15 seconds.
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? 4 cm Area = 20 cm² 6 cm
The height of the triangle whose base is 4 cm and area is 20 cm² is 10 cm .
The area of a triangle is defined as the total space occupied by the three sides of the triangle in a two-dimensional plane. The basic formula for the area of a triangle is half the product of the base and the height, or A = 1/2 × b × h.It is given that base is 4 cm and area is 20 cm² .
Putting above values in area formula , we get
Area = 1 / 2 × base × height
20 = 1 / 2 × 4 × height
20 = 2 × height
10 cm = height
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The complete question is given below :
Find the height of the triangle whose base is 4cm and area is 20 cm².
What’s the algebraic expression of:
Six times the sum of a and b squared minus four times the product of a and b squared
Answer:
6(a+b)^2 + 4ab^2
Step-by-step explanation:
sum is addition (a+b)
product is multiplication (ab)
6(a+b)^2 + 4ab^2
Four friends are on vacation in Hawaii.
Leilani is hiking in Oahu at 952 m in elevation.
Keanu is snorkeling at -2 m in elevation.
Kiah is scuba diving at 608 m in elevation.
Kanoa is enjoying a picnic at 4 m in elevation.
Which friend is closest to sea level?
WILL GIVE BRAINLIST TO BEST ANSWER
Julia drove a car 10 miles in 30 minutes. Jasmine drove a motorcycle 3 miles in 12 minutes. who drove faster? show work!
Name the property illustrated by the statement " (7a * 2b) + 3c = 3c + ( 7a * 2b)" Group of answer choices Associative Property of Multiplication Associative Property of Addition Commutative property of Multiplication Commutative Property of Addition
The property illustrated by the statement where the equation is given as (7a * 2b) + 3c = 3c + (7a * 2b) is the Commutative Property of Addition
How to name the property illustrated by the statement?The equation is given as
(7a * 2b) + 3c = 3c + (7a * 2b)
The Commutative Property of Addition states that
a + b = b + a
In this case
a = (7a * 2b) and b = 3c
When the Commutative Property of Addition is applied using the above variables, we have
(7a * 2b) + 3c = 3c + (7a * 2b)
Hence, the property illustrated by the statement where the equation is given as (7a * 2b) + 3c = 3c + (7a * 2b) is the Commutative Property of Addition
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Find the inverse of each function. Is the inverse a function? f(x)=4 x-1
We need to know about inverse of a function to solve this problem. The inverse of the given function is (x+1)/4.
The inverse of a function is a function for whom the range of the function becomes it's domain. The domain of a function is the set of values that the function can take as input. The range of a function is the set of values that the function can have as possible output. The inverse of a function is a function that finds the pre-image of it's function. If the function is in terms of x, then the inverse of the function will be in terms of y. The inverse of a function can be found by making y the independant variable and expressing x in terms of y.
f(x)=4x-1
write this function in terms of y and wquating to x
x=4y-1
x+1=4y
y=(x+1)/4
[tex]f^{-1} (x)[/tex]=(x+1)/4
Therefore we found the inverse of the function to be (x+1)/4.
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if the test scores of a class of 35 students have a mean of 73.1 and the test scores of another class of 26 students have a mean of 65.6, then the mean of the combined group is
The mean of the combined group of classes is 69.35
Mean is given by by dividing the sum of the given numbers by the entire number of numbers, the mean—the average of the given numbers—is determined. Mean is equal to (Sum of All Observations/Total Observations).
It is given that,
The mean of test scores of a class having 35 students = 73.1
And,
The mean of test scores of a class having 26 students = 65.6
We need to find,
The mean of the combined group of classes = mean of both classes
Mean of both classes = [tex]\frac{73.1 + 65.6}{2}[/tex]
= [tex]\frac{138.7}{2}[/tex]
= 69.35
Hence, 69.35 is the mean of the combined group of classes
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A triangle has side lengths of (8w + 8x) centimeters, (3w+10y) centimeters, and
(4y + 8x) centimeters. Which expression represents the perimeter, in centimeters,
of the triangle?
Answer:
(8w+8x)(8w+8x)+(3w+10y)(3w+10y)+(4y+8x)(4y+8x)
Step-by-step explanation:
please help im giving 60 points on my most recent question earn another 10 here :D
Find the midpoint given the endpoints:
(___),(___)
Note: 1.5 = 3/2
=======================================================
Explanation:
The two points shown on the graph are located at (-3, -2) and (1, 5)
Let's focus on the x coordinates for now.
To find the midpoint of -3 and 1, we do two things in the order shown
Add up the values: -3+1 = -2Divide in half: -2/2 = -1Therefore, -1 is the midpoint of -3 and 1 on the number line.
It is also the x coordinate of the midpoint.
------------
Repeat these steps for the y coordinates of the given points.
Add: -2+5 = 3Divide in half: 3/2 = 1.5This is the y coordinate of the midpoint.
-------------
The midpoint overall is located at (-1, 1.5)
I used GeoGebra to confirm the answer as correct.
Write each logarithm as the quotient of two common logarithms. Do not simplify the quotient.
log₉3.3
Each logarithm as the quotient of two common logarithms is :
[tex]\frac{log\\ 3.3}{log \\9}[/tex]
What is logarithmic equation ?In, mathematics a logarithmic equation is inverse of exponential equation. That means, we can easily convert the logarithmic equation into exponential equation and vice versa. The basic form of the logarithm function can be written as .
[tex]log_ax=N[/tex]
where, a is the base of function or equation
x define expression
Mathematically, if [tex]a^N=x[/tex] is an exponential function then, this can be converted to logarithmic function as [tex]log_ax=N[/tex].
There are many formulas that are given to us for solving several simple and complex problems based on logarithmic functions and logarithmic equations.
Some important formulas of logarithms are :
log_c (a) +log_c (b) = log (a b)log a/b = log a - log blog a^x = x log alog a^a = 1log (√x) = 1/2 log (x)The given expression is,
[tex]log_9{3.3}[/tex]
as, [tex]log_bm= \frac{log_cm}{log_cb}[/tex]
therefore ,
[tex]log_9{3.3}[/tex] = [tex]\frac{log \ 3.3}{log \ 9}[/tex]
Hence, logarithm as the quotient of two common logarithms is :
[tex]\frac{log\\ 3.3}{log \\9}[/tex]
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you will get 100 points if you get this right
Answer:12.5 Km/L
Step-by-step explanation:[tex]\frac{100km}{8L}[/tex]
=12.5Km/L
Answer: 12.5
100 / 8 = 12.5
CHECK
12.5 x 8 = 100
Hope this helps 0v0
3 A trader buys some goods for $820. When he sells them, he makes a profit of 35%.
a Work out the profit, in dollars.
b Work out how much he sells them for
Based on the amount that the trader bought the goods for, when he sells them, he would make a profit of $287
The amount that the trader will sell the goods for is $1,107
How to find the dollar profit?The dollar profit that the trader will make from selling the goods is:
= Cost of the goods x Percentage profit
= 820 x 35%
= 820 x 0.35
= $287
The amount that the trader will sell the goods for is:
= Cost of the goods + Profit on the goods
= 820 + 287
= $1,107
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Simplify each number. (-32)⁶/₅
Simplify by expressing 32 as a product of its prime factors. Write it in index form and apply the power rule: (a^m)^n = a^mn
32 =2x2x2x2x2 = 2^5
(-2^5)^6/5 = -2 ^ 5x6/5 = -2^6
= -64
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The result of simplifying each number (-32)⁶/₅ using the exponent rules is 64
To solve this exercise we have to resolve algebraic operations following the exponent rules.
(-32)⁶/₅
Base= -32
Exponent = 6/5
The base number -32 is the same as: -2⁵, then we get:
(-2⁵)⁶/₅
Using the power of a power rule that indicates that: the exponent result will be the multiplication of these exponents, we have:
(-2)⁵*⁶/₅
(-2)⁶
64
What is an exponent?In mathematics an exponent is the number of time that a number, called (base) is multiplied by itself. It is also called, power or index.
Example: 3² = 3*3 = 9
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y varies directly with x .
If x=1 when y=5 , find y when x=3 .
After direct variation y = 15 when x = 3.
What exactly do we mean when we say "direct variation"?To give the reader a hint, direct variation equations use the same phrase.Either "directly proportional" or "directly varies" is the phrase.For example, the area of a square is proportional to the square of its side.The variational constant is k = 3 if y varies directly as x and y = 6 when x = 2.As a result, y = 3x is the direct variation equation.So,
The initial statement is y = kx
Then to find y when x = 3.
K constant will be y/x ⇒ 5/1That is y = kx ⇒ y = 5/1 × xWhen x = 3:
y = 5/1 × 3 ⇒ y = 15Therefore, after direct variation y =15 when x = 3.
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2. A clothing company buys 458 of a
new style of blouse. Each blouse costs
the company $24. What was the total
spent on the blouses?
Answer:
6,192
Step-by-step explanation:
Simplify each number. (-343)¹/₃
The result of simplifying each number (-343)¹/₃ using the properties of exponents is -7
To solve this exercise we have to resolve algebraic operations following the exponent properties.
(-343)¹/₃
Base= - 343
Exponent= 1/3
The base number -343 is the same as: -7³, then we get:
(-7³)¹/₃
Using the power of a power rule that indicates that: the exponent result will be the multiplication of these exponents, we have:
(-7)⁽³*¹/₃⁾
(-7)⁽³/₃⁾
(-7)⁽¹⁾
-7
What is an exponent?In mathematics an exponent is the number of time that a number, called (base) is multiplied by itself. It is also called, power or index.
Example: 3² = 3*3 = 9
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Find the exact value of cos (-315)° .
Answer:
[tex]\frac{1}{\sqrt{2}}[/tex]
Step-by-step explanation:
cos(-315)° = cos 315°
The cosine function is an even function.cos 315° = cos 45°
cos(360°-x)=cos(x)This is equal to
[tex]\frac{1}{\sqrt{2}}[/tex]
Describe the relationship between rational numbers and whole numbers. Are all rational numbers also whole numbers? Are all whole numbers also rational numbers? Give examples to support your answer. need answers ASAP
Rational numbers include all integers and fractions. All negative integers and whole numbers make up the set of integers. Whole numbers comprise of all natural numbers and zero.
Are all rational numbers also whole numbers:#Every Rational number is not a whole number because A whole number is a component set of zero and all positive numbers such as 0, 1, 2, 3, 10, 15,… include only positive integers. It excludes negative integer, decimal, and fractional values .
Rational Number includes all the fractions, integers as well as decimal numbers.
Here set of whole number like 3, 4, 5 we can write this number as a fraction of 1 like 3/1, 4/1, 5/1… in ratio of two integers. Therefore every whole number is a rational number but every rational number is not a whole number.
Are all whole numbers is a rational number :#Whole numbers are that starts from 0 to infinity. Whole numbers can be written in the form of 0/1, 1/1, 2/1, … Thus, every whole number is a rational number but every rational number is not a whole number.
What percent of 40 is 70
Answer:
think its 175%
Step-by-step explanation:
Convert the fraction to a decimal, then multiply by 100 =175%
Please help!!! 4(3x + 2)= -76, show your work pleaseee!!!
Answer:
x=-7
Step-by-step explanation:
Divide both sides by 4: 4(3x+2)/4=-76/4
Simplify; 3x+2=-19
Subtract 2 from both sides: 3x+2-2=-19-2
Solve:3x=-21
divide side by 3: 3x/3=-21/3
simplify: x=-7 B)
Answer:
x = -7
Step-by-step explanation:
Given equation:
[tex]4(3x+2)=-76[/tex]
Distribute:
[tex]\implies 4 \cdot 3x+4 \cdot 2=-76[/tex]
[tex]\implies 12x+8=-76[/tex]
Subtract 8 from both sides:
[tex]\implies 12x+8-8=-76-8[/tex]
[tex]\implies 12x=-84[/tex]
Divide both sides by 12:
[tex]\implies \dfrac{12x}{12}=\dfrac{-84}{12}[/tex]
[tex]\implies x=-7[/tex]
help me out asap pls
Answer:
I don't think any are parrallel.
Step-by-step explanation:
If you look at the angles, they are different. Just slightly. So the rays making the angles would be at different angles. If they were the same angles the rays making the angles would be the same not allowing them to touch making them parallel. But since they are not I don't think they are parallel.
What is the quotient of 1. 843\times 10^71. 843×10 7 and 4. 85 \times 10^44. 85×10 4 expressed in scientific notation?
The quotient of 1.843 × 10^7 and 4.85 × 10^4, expressed in scientific notation, is 3.8 × 10^2.
Scientific notation is a way of expressing a very large or a very small number that are too much to be written in decimal form. The scientific notation is represented as:
a × 10^b
where a is between 1 and 10 and b is an integer representing the number of zeros
To divide numbers in scientific notation,
1. Divide the decimal numbers.
1.843 ÷ 4.85 = 0.38
2. Subtract the exponents of your power of 10.
7 - 4 = 3
3. Place the new power of 10 with the decimal in scientific notation form.
0.38 × 10^3 = 3.8 × 10^2
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quadrilateral A'B'C'D. Describe a sequence F. Quadrilateral ABCD is congruent to of rigid motions that takes A to A, B to B, C to C, and D to D. (Lesson 1-17) A' B' C' A D C B
The sequence of transformations that take quadrilateral ABCD to quadrilateral A'B'C'D' is given by:
Rotation 90º clockwise.Translation left.What are examples of transformations in the graph of a function?Examples of transformations are given as follows, along with explanations on the changes caused by the transformations.
Translation: Can be either left/right or down/up, changing the position of the figure.Reflections: Can be over one of the axes or over a line, changing the orientation of the figure.Rotations: Happens over a degree measure, changing the inclination, along with the orientation, of the figure.Dilation: Happens when the coordinates of the vertices of the original figure are multiplied by the scale factor, changing the side lengths of the figure.As a dilation changes the side lengths the figure, a dilated figure is not congruent to the original figure, hence a dilation does not happen for this problem.
The first change was in the inclination and orientation of the figure, hence it underwent a rotation. From the movement of the vertices, for example, A to the bottom to the top, B from right to left, the rotation was of 90º clockwise.
Then, the function had the base at the same position, however it moved left, hence the second transformation was a translation left.
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6000 was rounded to 1 significant figure.
What is the lower bound?