What is number ll I'm in advanced math and this is the only one I don't know. I'm in the 7th grade and in 9th grade math please help me.
Answers
2 4/5 - 1 1/5
14/5 - 6/5
8/5
-8/5
Now, we should turn it back into a mixed number.
-1 3/5
The value of this expression is -1 3/5 or -8/5.
Related Questions
Erika and Rita have added a 1-mile walk to their daily exercise schedule. The table lists the time each of them took to walk the 1-mile distance over the past five days. Erika’s Time (in minutes) Rita’s Time (in minutes) 20 21.25 21.5 24.75 22.75 23 23.25 23 20.25 20.75 On average, it takes Erika about minute(s) per mile less than Rita.
Answers
Erika's average = (20+21.5+22.75+23.25+20.25)/5 = 21.55
Rita's average = (21.25+24.75+23+23+20.75)/5 = 22.55
On average, Erika is much slower than Rita by 1 minute.
Answer ALL if u cant see all the answers it don't matter all u need is the question
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on every 3rd day Ivan goes to the gym. On every fifth day Gavin goes to the gym. What day will Ivan and Gavin will see each other.
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ini earned $160 during the summer doing chores. She bought 3 dresses worth $12 each using her chore money. How much money was left after she bought the dresses?
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When the factors of a trinomial are (x - p) and (x - q) then the constant term of the trinomial is:
A. The quotient of -p and -q
B. The product of -p and -q
C. The difference of -p and -q
D. The sum of -p and -q
Answers
that is b.
The constant term will be the product of -p and -q.
What is a trinomial?A trinomial is an algebraic expression that has three non-zero terms and has more than one variable in the expression.
Given that the factors of a trinomial are (x - p) and (x - q) we need to determine the constant term of the trinomial:
We know that a trinomial in its factors form can be written as,
x² + (α+β)x + αβ, where α and β are factors.
So, here the constant term of the trinomial will be (-p) × (-q) = pq.
Hence the constant term will be the product of -p and -q.
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Which of these expressions is equal to 6 + (2 + 3) × 5
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6 + (5) x 5
6 + 25
31
Order of operations: PEMDAS
Parenthesis
Exponents
Multiply Divide
Addition
Subtraction
can someone help with this
Answers
Solve for g.
[tex]g/20=12/48 [/tex]
Isolate the variable; Multiply both sides by 20.
[tex](g/20)*20=(12/48)*20 [/tex]
[tex]g=240/48 [/tex]
[tex]g=5[/tex]
Hope this helps.
-Benjamin
For three consecutive years, Sam invested some money at the start of the year. The first year, he invested x dollars. The second year, he invested $2,000 less than 5/2 times the amount he invested the first year. The third year, he invested $1,000 more than 1/5 of the amount he invested the first year.
During the same three years, Sally also invested some money at the start of every year. The first year, she invested $1,000 less than 3/2 times the amount Sam invested the first year. The second year, she invested $1,500 less than 2 times the amount Sam invested the first year. The third year, she invested $1,400 more than 1/4 of the amount Sam invested the first year.
If Sam and Sally invested the same total amount at the end of three years, the amount Sam invested the first year is $ and the amount Sally invested the last year is $ .
Answers
Below are the expressions translated from the given word forms for the amount invested.
Sam:
2nd year : amount = 5x/2 - 2000
3rd year : amount = x/5 + 1000
The sum of money invested by Sam is:
x + (5x/2 - 2000) + (x/5 + 1000)
Similarly, we derive the expressions that we use for the amount that Sally invested.
Sally
1st year : amount = 3x/2 - 1000
2nd year : amount = 2x - 1500
3rd year : amount = x/4 + 1400
The total amount that Sally invested is,
total = (3x/2 - 1000) + (2x - 1500) + (x/4 + 1400)
Equating the two equations:
(x) + (5x/2 - 2000) + (x/5 + 1000) = (3x/2 - 1000) + (2x - 1500) + (x/4 + 1400)
Solving for x,
x = 2000
For Sally's investment in the third year:
amount = x/4 + 1400 = (2000/4 + 1400) = 1900
ANSWERS:
Sam's first year = $2000
Sally's third year = $1900
The sum of 74 and four times a number is 258. Find the number
Answers
4x = 258 - 74
4x = 184
x = 184/4
x = 46 ← the number
The unknown number is 46.
What is a word problem?A word problem is a verbal description of a problem situation. It consists of few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.
For the given situation,
Let the number be x.
The sum of 74 and four times a number is 258,
⇒ [tex]74+4x=258[/tex]
⇒ [tex]4x=258-74[/tex]
⇒ [tex]x=\frac{184}{4}[/tex]
⇒ [tex]x=46[/tex]
Hence we can conclude that the unknown number is 46.
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if O represents number of integers between 10,000 and 100,000 all of whose digits are odd, and E represents number of integers between 10,000 and 100,000 all of whose digits are even, what is the value of O - E?
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fist let's find O, that is the number of all numbers between 10,000 and 100,000, whose all digits are odd.
so we have to count: 11,111; 11,113; ... 99,999
we notice that all these numbers are 5 digit, and they are made up of the odd digits {1, 3, 5, 7, 9} with repetition allowed.
so there are in total [tex]5*5*5*5*5= 5^{5} [/tex] such numbers.
ii)
E is the total number, of 5-digit numbers formed from the set{0, 2, 4, 6, 8} with repetition allowed, and the first digit not equal to 0.
so [tex]E=4*5*5*5*5= 4*5^{4}[/tex]
iii) [tex]O-E=5^{5}-4*5^{4}=5^{4}(5-4)=5^{4}=625[/tex]
Answer: 625
Solve the equation for the letter L: A=LW
L = AW
L equals W over A
L = A − W
none of the above
Answers
[tex] \frac{LA}{A}=LWA [/tex] ⇒ The terms 'A' on the LHS cancel each other
[tex]L=LWA[/tex] ⇒ Divide both sides by 'L'
[tex] \frac{L}{L}= \frac{LWA}{L} [/tex] ⇒ The terms 'L' on the LHS cancel each other to '1' and the terms 'L' on the RHS will also cancel each other
[tex]1= WA[/tex]
The correct answer is the last option = none of the above
If the family has three pets, what is the theoretical probability that they have three dogs or three cats?
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The probability helps us to know the chances of an event occurring. The theoretical probability that they have three dogs or three cats is 0.25.
What is Probability?The probability helps us to know the chances of an event occurring.
[tex]\rm{Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}[/tex]
As it is given that the pet can either be a dog or a cat, therefore,
The probability that all the three pets are dogs is:
[tex]\rm P(X= 3\ dogs) = \dfrac{1}{2}\times \dfrac{1}{2}\times \dfrac{1}{2} = \dfrac{1}{8}[/tex]
The probability that all the three pets are cats is:
[tex]\rm P(X= 3\ Cats) = \dfrac{1}{2}\times \dfrac{1}{2}\times \dfrac{1}{2} = \dfrac{1}{8}[/tex]
Now, we need to calculate the probability that all three pets are either dogs or cats, therefore, the probability can be written as,
[tex]\rm P(3\ Dogs\ or\ 3\ Cats) = P(X = 3\ dogs) + P(X = 3\ cats)[/tex]
[tex]= \dfrac{1}{8}+\dfrac{1}{8}\\\\=\dfrac{2}{8}\\\\ = \dfrac{1}{4} = 0.25[/tex]
Hence, the theoretical probability that they have three dogs or three cats is 0.25.
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Let set A = {odd numbers between 0 and 100} and set B = {numbers between 50 and 150 that are evenly divisible by 5}. What is A ∩ B? (2 points)
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A = {1, 3, 5, 7,...., 95, 97, 99}
B = {numbers between 50 and 150 that are evenly divisible by 5}
B = {50, 55, 60, 65, ..., 140, 145, 150}
The notation A ∩ B means the set of items that are in set A and also in set B. In terms of venn diagrams, it's the overlapping region between circle A and circle B
In this case, the following values are found in both set A and set B
{55, 65, 75, 85, 95}
So that's why
A ∩ B = {55, 65, 75, 85, 95}
which is the final answer
The height of a ball thrown directly up with a velocity of 10 feet per second from a initial height of of 100 feet is given by the equation h(t) = -16tsquared + 10t + 100, where t is the time in seconds and h is the ball’s height, measured in feet. When will the ball hit the ground? Round your answer to the nearest tenth.
Answers
-16t^2+10t+100=0
Using the quadratic equation:
t=(-10±√6500)/-32, and since t>0
t≈2.8 seconds (to nearest tenth of a second)
Answer:
The ball will hit at 2.83 seconds.
Step-by-step explanation:
It is given that,
Velocity with which a ball is thrown up is, v = 10 ft/s
Initial height, h = 100 ft
The equation for the height of an object as a function of t is given by :
[tex]h(t)=-16t^2+10t+100[/tex]...............(1)
Where
t is the time in seconds
h is the ball's height measured in feet
We have to find the time when the ball hits the ground. It can be calculated by solving the quadratic equation of equation (1). On solving we get the value of t as :
t = 2.832 seconds
So, at 2.83 seconds the ball will hit the ground. Hence, this is the required solution.
What is the area of the polygon shown below?
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Polygon ABCD has the following vertices:
A(−4, 2), B(3, 2), C(3, −5), and D(−4, −2)
Calculate the area of the polygon.
Answers
To be able to solve clearly this problem, the best thing to do is to plot the graph (see attached pic). From the graph we can see that the points form a trapezoid.
The base is formed by the segment connecting point A and point B.
While the two heights: shorter one by the segment connecting points A and D, and the longer one by the segment connecting points B and C.
The formula for area of trapezoid is given as:
A = b (h1 + h2) / 2
Where,
b = base of the trapezoid = 3 – (-4) = 7
h1 = shorter height = 2 – (-2) = 4
h2 = longer height = 2 – (-5) = 7
Therefore the area is:
A = 7 (4 + 7) / 2
A = 77 / 2
A = 38.5
The answer is 38.5. I took this exam and I chose 38.5 and got it right, I hope this helps!
Solve the equation by completing the square. Round to the nearest hundredth if necessary? X^2+3x=24
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In this case (3/2)^2=2.25
x^2+3x+2.25=26.25 now the left side is a perfect square...
(x+1.5)^2=26.25 take the square root of both sides
x+1.5=±√26.25 subtract 1.5 from both sides
x=-1.5±√26.25
x=-1.5-√26.25 and -1.5+√26.25
x≈ -6.62 and 3.62
how to write place value 35 thousand,26hundredand 16 tens and 12 ones
Answers
26 hundred=2,600
16 tens=160
12 ones=12
jackson bikes 2 miles in 15 minutes. At this rate, how many miles will he bike in 45 minutes?
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Look at the cups shown below (please note that images are not drawn to scale): A cone is shown with width 3 inches and height 6 inches, and a cylinder is shown with width 3 inches and height 5 inches How many more cubic inches of juice will cup B hold than cup A when both are completely full? Round your answer to the nearest tent
Answers
Amount of juice that cup B will hold than cup A when both are completely full is A: 18.8 cubic inches. therefore, Option A: 18.8 cubic inches.
Amount of juice hold by Cup B which is in the shape of a cylinder having width 2 inches that is radius 1 inches and height 7 inches
πr^2h = π × 1^2 ×7 = 7π cubic inches
Amount of juice hold by cup A which is in the shape of a cone having width 2 inches that is radius 1 inches and height 3 inches
1/3 × π × r^2 h
1/3 × π × 1^2 × 3 = πcubic inches
Amount of juice that cup B will hold than cup A when both are completely full = 7π - π = 6π cubic inches
= 6 × 3.14
= 18.84 cubic inches
Option A: 18.8 cubic inches
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Question
Look at the cups shown below (please note that images are not drawn to scale):
A cone is shown with width 2 inches and height 3 inches, and a cylinder is shown with width 2 inches and height 7 inches.
How many more cubic inches of juice will cup B hold than cup A when both are completely full? Round your answer to the nearest tenth.
18.8 cubic inches
21.9 cubic inches
25.1 cubic inches
32.6 cubic inches
Find the value of X in the problem below. Geometry
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(3x+10) +14x = 180
17x +10 = 180
17x=170
x = 170/17 = 10
x = 10
o graph the equation 2x + 5y = 10, Zeplyn draws a line through the points (5, 0) and (0, 2). What is the slope of the line represented by 2x + 5y = 10?
a.-5/2
b.-2/5
c.2/5
d.5/2
Answers
Change to y = mx + b
subtract 2x from both sides
5y = -2x + 10
divide both sides by 5
y = -2/5x + 2
slope = -2/5
LETTER B
we have
[tex] 2x + 5y = 10 [/tex]
we know that
the formula to calculate the slope is equal to
[tex] m=\frac{(y2-y1)}{(x2-x1)} [/tex]
Let
[tex] A( 5,0)\\B( 0,2) [/tex]
Step [tex] 1 [/tex]
Find the slope AB
[tex] mAB=\frac{(2-0)}{(0-5)} \\ \\ mAB=-\frac{2}{5} [/tex]
therefore
the answer is the option B
[tex] -\frac{2}{5} [/tex]
the graph in the attached figure
In italy about 74 of every 100 people use celular telephones. Write the fraction of celular phone users in italy. Then write it as a decimal.
Answers
74/100 reduces to 37/50 = 0.74
If there are 11 apples and I eat one and split half of the rest with my friend. How many do i have?
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Select the factors of 6ab + 3ay − 2bx − xy.
A. (3a − x)(2b + y)
B. (3a − y)(2b + x)
C. (2a − x)(3b + y)
D. (2a − y)(3b + x)
I need the answer I don't get it ...and this is a really long test ..but so far I only need help on this one . thanks to whoever helps me and give correct answer
Answers
A. (3a − x)(2b + y)
cause
(3a − x)(2b + y) = 6ab + 3ay -2bx -xy (expand by using distributive property)
Answer:
The factors of given expression is (3a-x)(2b+y)
A is correct
Step-by-step explanation:
Given: [tex]6ab+3ay-2bx-xy[/tex]
We need to factor the given expression.
First we make two group
[tex]\Rightarrow (6ab+3ay)+(-2bx-xy)[/tex]
Factor each group
[tex]\Rightarrow 3a(2b+y)-x(2b+y)[/tex]
[tex]\Rightarrow (3a-x)(2b+y)[/tex]
So, we get two factor (3a-x) and (2b+y)
Hence, The factors of given expression is (3a-x)(2b+y)
What are the factors of 60a
Answers
Answer:
Factors of 60 are:
1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60
0.75 = log x raise each side of the equation as power
Answers
0.75 = logx
I always flip them so that I can make sure I don't forget anything. FYI, this is one of the trick they used to force you make the mistake so make sure you always flip the equation (omg I talked too much)
--------------------------------------------------------------------------------
0.75 = logx
Flip it
logx = 0.75
We need to solve for the logarithm
log(x)= 0.75
Take exponent of both sides
10^logx =10^0.75
x = 10^0.75
x= 5.623413
I hope that helps!
c+1/c-2 = 4/7 please show how you got the answer
Answers
C + 1 = 4
c - 2 = 7
4 - 1 = C
C = 3
2+ 7 = c
c = 9
hope this helps
Module 04.03 Exponential Functions and Models: Essential Questions:
1) How do the properties of exponents apply to exponential functions?
2)How are key features of graphs and tables used to model relationships between two quantities?
3)How can the average rate of a change be identified for a function?
*PLEASE HELP! NEED TO KNOW THIS.*
Answers
Properties of exponents are used to simplify and manipulate exponential functions. In graphing, growth rate, intercept, and asymptotes model relationships. The average rate of change for a function is calculated based on changes in output divided by input changes over an interval.
Explanation:Understanding Exponential Functions and ModelsExponential functions are mathematical expressions where a constant base is raised to a variable exponent. The properties of exponents, such as product, quotient, and power rules, apply to these functions and are used to simplify and manipulate expressions.
When modeling relationships between two quantities using graphs and tables, key features like the growth rate, y-intercept, and asymptotes are important. The growth rate can be understood from the steepness of the graph or how quickly the y-values increase as x increases. The y-intercept represents the starting value of the quantity being modeled when x equals zero.
The average rate of change for a function is identified by calculating the change in the function's output values (y-values) divided by the change in the input values (x-values) over the interval of interest. For exponential functions, this rate of change is not constant, but increases or decreases at a rate proportional to the function's current value.
An example of exponential growth in a natural population might be the rapid increase in a bacteria population in an ideal lab condition, where it doubles every fixed amount of time. In contrast, a logistic growth pattern occurs when the growth rate decreases as the population reaches carrying capacity, such as the population of sheep in a field with limited grass for food.
Exploring the Exponential DistributionThe exponential distribution is typically used to model the time between events in a memoryless process, where the probability of an event occurring is the same at any moment. In an exponential distribution, outcomes are not equally likely as not all intervals of time are equally likely to occur before the next event. The mean (m), often referred to as the expected value, and the standard deviation can be derived from the rate parameter, which is the reciprocal of the mean.
Understanding how to manipulate a linear equation, as well as interpret and compute growth rates, is foundational in various applications including those in economics, biology, and environmental science. The ability to read and manipulate graphs is crucial for clearly presenting data and drawing accurate conclusions.
Simplify the following expression: 2x − 6y + 3x2 + 7y − 14x. 3x2 + 12x + y 3x2 − 12x − y 3x2 − 12x + y 3x2 − 12x − 13y
Answers
The required simplified solution of the given expression 2x − 6y + 3x² + 7y − 14x is 3x² -12x + y.
Given that,
To simplified solution of the given expression 2x − 6y + 3x² + 7y − 14x.
The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
What is arithmetic?In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division,
= 2x − 6y + 3x² + 7y − 14x.
= 3x² + 2x -14x + 7y -6y
= 3x² -12x + y
Thus, the required simplified solution of the given expression 2x − 6y + 3x² + 7y − 14x is 3x² -12x + y.
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