Answers
Answer:
Step-by-step explanation:
2. Subtraction property of equality
3. Simplification
4. Subtraction property of equality
5. Simplification
Related Questions
Sandra has 10 books. She divides them into groups of 2 each. How many groups can she make?
Answers
Answer:
5 groups
Step-by-step explanation:
10/2=5
Which of the following is not a benefit of stressing
1. Poor circulation
2. Increased speed and power
3. Increased flexibility
4. Minimized chances of injuries
Which of the following is not in upper body stretch?
1. Arms circles
2. Trunk twist
3. Straddle stretch
4. Triceps stretch
Answers
The option that is not a benefit of stretching is 1. Poor circulation
The option that is not in upper body stretch is 3. Straddle stretch
What are the Advantages of Stretching?The benefits include:
Increase your physical activity performance.Reduce your risk of injury.Assist your joints in moving through their entire range of motion.Increase blood flow to the muscles.Allow your muscles to work as efficiently as possible.Improve your ability to perform daily tasks.The straddle stretch is one that is not considered an upper body stretch. Straddle stretch, also known as the middle split, requires a lot of leg flexibility. In conclusion, the correct option is C.
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of the 360 people that attended a town meeting 96 were senior citizens what percent of the people that attended the town meeting are senior citizens if necessary round to the nearest tenth (1 point)
Will give brainliest need now
Answers
Answer: 0.26666667 (0.3)
For a project in his Geometry class, Feng uses a mirror on the ground to measure the height of his school’s flagpole. He walks a distance of 8.65 meters from the flagpole, then places a mirror on flat on the ground, marked with an X at the center. He then steps 1.1 meters to the other side of the mirror, until he can see the top of the flagpole clearly marked in the X. His partner measures the distance from his eyes to the ground to be 1.65 meters. How tall is the flagpole? Round your answer to the nearest hundredth of a meter.
Answers
The height of the flagpole, found using the ratio of the sides of similar triangles is 12.975 meters
What are similar triangles?Similar triangles are triangles in which two angles of one triangle are congruent to two angles in the other triangle, such that they have the same shape.
The parameters that can be used to find the height of the flagpole are;
Distance of the mirror from the flagpole = 8.65 meters
Distance of Feng on the other side of the flagpole = 1.1 meters
The height from Feng's eyes to the ground = 1.65 meters
According to the law of reflection, the angle of incident and the angle of reflection are the same
The angle made by Feng and the ground = Angle made by the flagpole and the ground = 90°
The triangle formed by the Feng and the flagpole are therefore similar by AA similarity postulate
The ratio of corresponding sides of similar triangles are the same, therefore;
[tex]\dfrac{1.65}{Height\, of \, the \, flagpole} = \dfrac{1.1}{8.65}[/tex]
[tex]Height\, of \, the \, flagpole = \dfrac{1.65}{1.1} \times 8.65 = 12.975[/tex]
Height of the flagpole = 12.975 meters
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8 1/2 - 6 1/4 = ? I would like to know the anwer of thi equation becaue i’m having trouble olving it. Thank you
Answers
Answer:
2 1/4
Step-by-step explanation:
Subtract the whole numbers first:
8 - 6 = 2
To subtract the fractions, change 1/2 to 2/4 since they equal the same thing and 2/4 has the same denominator as 1/4:
2/4 - 1/4 = 1/4 <--- all we needed to do was subtract the numerators
Your final answer is 2 1/4.
9x² + 31x+ 20 = ( ? ) ( ? )
2x² +7x-4 = ( ? )( ? )
2x² - 13x-5 = ( ? )( ? )
Answers
Answer: The square root of 169 is 13, so the two solutions for x are:
x = (13 + 13) / 4 = 3.25
x = (13 - 13) / 4 = -0.25
Since the quadratic expression 2x^2 - 13x - 5 equals 0 when x is either 3.25 or -0.25, the factors of this expression are (x - 3.25)(x + 0.25).
In summary, the factors of the first quadratic expression are (x + 1.056)(x + 5.937), the factors of the second expression are (x - 0.75)(x + 3.75), and the factors of the third expression are (x - 3.25)(x + 0.25).
Step-by-step explanation: To find the factors of a quadratic expression, we can use the quadratic formula. The quadratic formula states that for a quadratic expression of the form ax^2 + bx + c = 0, the solutions for x are given by the formula x = (-b ± sqrt(b^2 - 4ac)) / (2a).
In the first equation, a is 9, b is 31, and c is 20. Plugging these values into the quadratic formula, we get:
x = (-31 ± sqrt(31^2 - 4 * 9 * 20)) / (2 * 9)
This simplifies to:
x = (-31 ± sqrt(961 - 720)) / 18
This further simplifies to:
x = (-31 ± sqrt(241)) / 18
We can find the value of the square root by using a calculator or by remembering some common square roots. The square root of 241 is approximately 15.937, so the two solutions for x are:
x = (-31 + 15.937) / 18 = -1.056
x = (-31 - 15.937) / 18 = -5.937
Since the quadratic expression 9x^2 + 31x + 20 equals 0 when x is either -1.056 or -5.937, the factors of this expression are (x + 1.056)(x + 5.937).
We can use the same approach to find the factors of the other two quadratic expressions. For the second expression 2x^2 + 7x - 4, the values of a, b, and c are 2, 7, and -4, respectively. Plugging these values into the quadratic formula, we get:
x = (-7 ± sqrt(7^2 - 4 * 2 * -4)) / (2 * 2)
This simplifies to:
x = (-7 ± sqrt(49 + 32)) / 4
This further simplifies to:
x = (-7 ± sqrt(81)) / 4
The square root of 81 is 9, so the two solutions for x are:
x = (-7 + 9) / 4 = 0.75
x = (-7 - 9) / 4 = -3.75
Since the quadratic expression 2x^2 + 7x - 4 equals 0 when x is either 0.75 or -3.75, the factors of this expression are (x - 0.75)(x + 3.75).
For the third expression 2x^2 - 13x - 5, the values of a, b, and c are 2, -13, and -5, respectively. Plugging these values into the quadratic formula, we get:
x = (13 ± sqrt(13^2 - 4 * 2 * -5)) / (2 * 2)
This simplifies to:
x = (13 ± sqrt(169 + 40)) / 4
``
A city has 3 new houses for every 7 old houses. If there are 21 new houses in the city, how many old houses are there?
A.
52
B.
49
C.
51
D.
47
Answers
Answer:
B. 49
Step-by-step explanation:
21/3 = 7
7*7 = 49
Use the values In 3≈ 1.1 and In 47≈ 3.85 to find the approximate value of log3 47.
O log, 47
4.95
O log3 47
4.235
O log3 47
0.286
O log3 47≈ 3.5
Answers
The value of the equation log(3 47) is about 4.235.
Describe log.The power to which a number must be increased in order to obtain another number is known as a logarithm. For instance, since ten raised to the power of two equals 100, the base ten logarithm of 100 is 2: log 100 = 2.
Given that the approximate values of log(3) and log(47) are 1.1 and 3.85, respectively,
we must determine the approximate value of log(347).
log(a × b) = log(a) × log(b)
we get ,
log(3 × 47) = log(3) × log(47)
substituting , the values of log(3) and log(47) ,
we get ,
log(3 × 47) = 1.1 × 3.85
≈ 4.235
Therefore , The approximate value of log(3 × 47) is 4.235 .
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Write the equation in slope-intercept form of the line that is parallel to the graph of each equation and passes through the given point. y=1/2x+5;(4,-5)
Answers
let f be a function by f(x)= -5x-3, D is its graph. Determine the coordinates of the point of intersections of D with the x-axis and the y-axis
Answers
Indirectly we are asked for x and y intercepts because
The point at which a line crosses x axis is called its x intercept and there y coordinate is 0.Similarly the point at which a line crosses y axis is called its y intercept and there x coordinate is 0Let us find out
f(x)=-5x-3Y intercept:-
put x=0
y=-5(0)-3y=-3(0,-3)
X intercept
put y=0
-5x-3=0-5x=3x=-3/5(-3/5,0)
Yo’s hi and Mariam are both driving from Chicago to Columbus yo’s hi leaves at 8:00 and averages 60 mph on the way.Mariam leaves at 8:15 and averages 65 mph on the way. The situation is modeled by this system, where x is the number of hours after Mariam leaves and y is the distance each will travel: y=60x+15
Y=65x
How long after Miriam leaves will she pass Yoshi, and how far will they each travel?
Answers
Answer:
x = 3
y = 195
Step-by-step explanation:
y = 60x + 15
y = 65x
65x = 60x + 15
5x = 15
x = 3
y = 65(3)
y = 195
Hope it helps!
From a normally distributed population, a simple random sample of size 30 is taken. The mean of the sample is 144 and the standard deviation of the sample is 12. Which interval is a 99% confidence interval for the population mean?.
Answers
On solving the provided question, we got that The 90% confidence interval for the population mean mu is (140.4, 147.6)
The meaning of the standard deviationA measure of how far the data are from the mean is called standard deviation (or). Data that have a low standard deviation are more likely to be centered around the mean than those that have a high standard deviation.
xbar = 144 (sample mean)
s = 12 (sample standard deviation)
n = 30 (sample size)
z = 1.645 (critical value at 90% confidence; use a calculator or table to compute this value)
[tex]The lower limit of the confidence interval is L, which is found by\\\\L = xbar - z(s/sqrt(n))\\L = 144 - 1.645(12/sqrt(30))\\L = 140.395985571616\\L = 140.4\\[/tex]
Similarly the upper limit U is
U = xbar + z(s/sqrt(n))
U = 144 + 1.645(12/sqrt(30))
U = 147.604014428384
U = 147.6
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helppp i need helpppp
Answers
Explanation
X and 60 are linear pair and linear pair are supplementary so x and 60 = 180 so subtract 180-60=120
Richard and Teo have a combined age of 28. Richard is 13 years older than twice Teo’s age. How old are Richard and Thiago?
Answers
Richard is 23years old and Thiago is 5years old
What is word problem?
A word problem is a mathematical exercise where significant background information on the problem is presented in ordinary language rather than in mathematical notation.
From the question,
Let R stands for Richard
T stands for Teo
we were told that the combined age of Richard and Teo is 28
i.e
R + T = 28 ......eqn (i)
we were also told that Richard is 13 years older than twice Teo’s age
i.e
R = 2T + 13 .....eqn(ii)
substituting 2T + 13 for R in eqn (i)
(2T+13)+T = 28
expanding the bracket
3T + 13 = 28
collecting like terms
3T = 28 - 13
3T = 15
T = 15/3
T = 5
Teo age is 5years
From eqn (i)
R + T = 28
R + 5 = 28
R = 28 - 5
R = 23
Hence, Richard age is 23years
From eqn (ii)
R = 2T + 13
substituting for R in the eqn
23=2T+13
collecting like terms
23-13=2T
10=2T
T=10/2
T=5
Hence. Thiago age is 5years
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Find the probability of rolling a um greater than 7 given that you rolled an odd number firt
Answers
As the out comes are (3,6), (5,6), (5,3), (5,4), (5,5),(3,5) when you rolled an odd number first so the probability of rolling a sum greater than 7 is 1/6
What is probability and example?The probability is equal to the variety of possible outcomes. the total number of outcomes that could occur. For instance, there is only one way to receive a head and there are a total of two possible outcomes, hence the probability of flipping a coin and getting heads is 1 in 2. (a head or tail). it will be written as P(heads) = 1/2.
Why do we use probability?Information about the possibility that something will happen is provided by probability. For instance, meteorologists use weather patterns to forecast the likelihood of rain. Probability theory is utilized in epidemiology to comprehend the connection between exposures and the risk of health outcomes.
There are total 36 possible outcomes of two dices when they are rolled.
N=36
now we have to consider the out comes having sum greater than 7
which are;
(2,6),(3,5),(3,6),(4,4) ,(4,5),(4,6),(5,3),(5,4),(5,5) ,(5,6),(6,2),(6,3),(6,4),(6,5),(6,6)
and now selecting only those having first number is odd
so they are:
(3,5),(3,6),(5,3),(5,4),(5,5),(5,6)
now using probability formula;
Probability = favorable outcomes /total outcomes
value putting;
probability = 6/36
probability =1/6
this is our required answer.
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Probability of rolling an odd number on a single die is 3/6, or 1/2. This is because there are three odd numbers (1, 3, and 5) on a standard six-sided die, and the probability of rolling any given number is 1/6.
What is meant by Probability?Probability is a metric used to determine how likely an event or result is to occur. A decimal or fraction between 0 and 1 is typically used to express it, with 0 denoting that the event will not occur and 1 denoting that it will occur without a doubt. For instance, the likelihood of rolling a 6 on a conventional six-sided die is 1/6 since there is only one scenario out of the six conceivable events that will result in rolling a 6. By dividing the number of desired outcomes by the total number of potential possibilities, one may compute probability. In general, the more likely an event is to occur, the greater its probability.
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Which table of values represents a linear function?
Answers
Therefore the table values of which represents a linear function are table 2 and table 3
What is linear equation?A linear equation is a first-order (linear) term and a constant in the algebraic form y=mx+b, where m is the slope and b is the y-intercept. A "linear equation of two variables" is what is sometimes referred to here, where y and x are the variables.
Here,
The values shown in table 2 have same constant rate of change of 3 units.
where as,
The values shown in table 3 have same constant rate of change of 5 units.
Therefore the table values of which represents a linear function are table 2 and table 3
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A line a pae through point (-3,5) and (0,0) and line b paed through point (3,5) and (0,0). Are line a and b parallel, perpendicular, or neither? Explain your anwer
Answers
A line 'a' and line 'b' are perpendicular to each other.
We know that the formula for the slope of line passing through two points (x1, y1) and (x2, y2) is,
m = (y2 - y1)/(x2 - x1)
A line 'a' passes through points (-3,5) and (0,0)
Let m1 be the slope of line 'a'
m1 = (0 - 5)/(0 - (-3))
m1 = -5/3
A line 'b' passes through points (3,5) and (0,0).
Let m2 be the slope of line 'b'
m2 = (0 - 5)/(0 - 3)
m2 = (-5)/(-3)
m2 = 5/3
We can observe that, m1 * m2 = -1
Since the product of slopes of the lines is -1, the lines a and b are perpendicular.
Therefore, the lines are perpendicular.
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Tritan walk 1/4 of mile in 1/10 of an hour. What i the unit rate of mile per hour?
Answers
Half a mile every hour is equal to 1/5 mile every 4/10th of an hour.
What is unitary method ?Area is the total amount of space that an object's shape or a flat (2-D) surface occupy.
Create a square on paper by using a pencil. Two dimensions make it up. A shape's area on paper is the space it takes up.
Imagine that your square is made up of smaller unit squares.
The area of a figure is equal to the number of unit squares required to completely cover the surface area of a particular 2-D shape. Square cms, square feet, square inches, square meters, etc. are a few common units for measuring area.
To get the area of the square figures presented below, draw unit squares with 1-centimeter sides. Therefore, the shape will be measured.
According to our question-
(1/5) / (4/10) = x / 1
Cross-multiplication yielding
1/5 * 1 = 4/10 * x
How to find x?
10 / 20 = x
x = 1 / 2
Half a mile every hour is equal to 1/5 mile every 4/10th of an hour.
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finding x??????????????????????????
Answers
Answer:
x = 12.5
Step-by-step explanation:
The inside angles of a triangle should sum 180°
then
2x + (7x+5) + (180 - (11x-25)) = 180
2x + 7x + 5 + 180 - 11x -25 = 180
-2x - 25 = 0
2x = -25
x -25/2
x = 12.5
god is good everyday and all time
Answers
The LORD is faithful to all generations, and His loving kindness endures forever.
Explain about the god is good everyday and all time?God Is Love, Therefore God Is Good God is light, and He is also love. God "is love." Because God loved the world so much that he gave his one and only Son, he ensured that everyone who trusted in him would not perish but have eternal life.
In the church, the adage "God is good, all the time, all the time" gained popularity a number of years ago. It is still in use today and was once used as a welcome and a response, frequently in a call-and-response pattern.
The Oxford English Dictionary describes omnibenevolence as unlimited or infinite compassion.
The complete question is,
Why is God so merciful all the time?
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State the domain and range of the following function {(2,3),(7,9),(4,-7),(6,2)(3,-5)
Answers
Domain: {2,7,4,6,3}
Range: {3,9,-7,2,-5}
Create an equivalent expression for 18^-7. 18^5. -18² 18² 1/18^-2 1/18²
Answers
The equivalence of the expression 18⁺⁷ * 18⁵ is
D. 1/18²How to write the equivalence of the expressionPower or exponents as used in mathematics are number written on top of a base number. The power says how many times the base number multiplies itself.
The given expression 18⁺⁷ * 18⁵ is solved using the power rule, the power rule used is equation of bases> In equation of bases the base are kept constant and the mathematical operators act on the powers
This method is used as in this case as shown below
= 18⁺⁷ * 18⁵
= 18⁺⁷⁺⁵
= 18⁻²
= 1/18²
Therefore the equivalence of the expression is 1/18²
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Find the greatest common factor (GCF) of 10 and 6 =. use the GCF to factor 10+6.
Answers
Answer: It would be 2.
Step-by-step explanation: The GCF of 10 and 6 would be 2 because that is the greatest number that 10 and 6 can be divided into. If we added them both to get 16. It would still be 2. I hope this helps!
work out the value of (4^0 x 6^0)
Answers
Answer: 1
Step-by-step explanation:
Jessica and Anthony are trying to finish a large pizza all by themselves. If Jessica ate 7/12 of the pizza and Anthony ate 3/12 of the pizza, what fraction of the pizza is left? A pizza cut into 12 equal pieces.
ANSWER ASAP
Answers
Answer:
2/12 of the pizza is left.
Step-by-step explanation:
7/12 plus 3/12 is 10/12, then minus that from 12/12 and you get 2/12.
What is the approximate perimeter of this triangle?
Answers
Answer:
Step-by-step explanation:
perimeter = hypotenuse + side a + side b
sin = opposite / hypotenuse
tan = opposite/adjacent
find the hypotenuse
let x = hypotenuse
sin(55 deg) = 56 / x
x * sin(55 deg) = 56
x = 56 / sin(55 deg) use a calculator
x ~ 68.36
find the side adjacent to 55 degrees
let x = adjacent leg
tan(55 deg) = 56 / x
x * tan(55 deg) = 56
x = 56 / tan(55 deg) use a calculator
x ~ 39.21
add them together
perimeter = 56 + 68.36 + 39.21
perimeter ~ 163.57 or 164
how do we do this I just forgot please help!
I will pray for you If you do it
Thanks
Answers
Answer:
Step-by-step explanation:
=(37 * 45 ) + (63 * 45 )
=1665 + 2835
=4500
Answer:
4720275Step-by-step explanation:
[tex]\tt 37\times 45\times63\times45[/tex]
[tex]\tt 1665\times63\times45[/tex]
[tex]\tt 104895\times 45[/tex]
[tex]\tt 4720275[/tex]
____________________
Hope this helps you!
Have a great day! :)
A class is planning a trip to the local City Museum of Art. There are 22 people going on this trip.
There are four drivers and two types of vehicles, cars and trucks. The cars set four people,
including the driver and the truck seats six people again including driver. How many trucks and
cars doe the class need for this trip? Write a system of equations to solve.
12/24
Answers
The number of trucks and cars need by the class for the trip will be 3 and 2 respectively
How to find the number of trucks and cars the class need for this tripInformation from the question is used as follows
There are 22 people going on this trip.
total number = 22
There are four drivers and two types of vehicles, cars and trucks
drivers = 4
vehicle types = 2
The cars set four people, including the driver and the truck seats six people again including drive
cars = 4 people
truck = 6 people
Total number of people + drivers = 26
let the number of people in the truck be t and the number of people in the car be c
6t + 4c = 26
assuming the trucks were 3
6 * 3 + 4c = 26
4c = 26 - 18
4c = 8
c = 2
The class will need 3 trucks and 2 cars
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doors for the small cabinets are 10.5 inches long. Doors for the large cabinets are 2.7 times as long as the doors for the small cabinets. How many large doors can be cut from a board that is 12 feet long?
Answers
Answer:
5 doors.
Step-by-step explanation:
10.5 times 2.7 is 28.35. 12 times 12 is 144. and 144 divided by 28.35 is 5.08 simplified to 5 doors
Solve the system of equations.
4x - 9y - 2 = 0
12x - 5y + 38 = 0
x =
y =
Answers
2.(x,y)=(-4,-2)