Answer: A
Step-by-step explanation:
4 1/2 is the same thing as 4.5
2 3/4 is the same thing as 2.75
4.5 - 2.75 = 1.75 = 1 3/4
Answer:
1 3/4
Step-by-step explanation:
SOLVE FOR P!
2p − 10 = –2
P=
Please help im desperate and its a 8th grade question only please
Answer:
a. 31/6; 33/6; 35/6
b. + 2/6
c. 37/6; 39/6; 41/6
d. 49/6
Step-by-step explanation:
First we need to find the first three terms.
To do so solve the equations in the boxes.
When dividing by a fraction you multiply by the reciprocal so the equations are now as follows:
2 * 31/12
3 * 11/6
5 * 7/6
Solve these to get
62/12 = 31/6
33/6
35/6
The term to term rule as shown above is adding 2/6 or 1/3.
To find the next three terms in the sequence add 2/6 to the term.
35/6 + 2/6 = 37/6
37/6 + 2/6 = 39/6
39/6 + 2/6 = 41/6.
To find the 10th term you need to write out the arithmetic sequence equation.
an = a1 + (n-1)d
an is the term you want to find and n is the term number in this case that is 10. D is the common difference which in this case is 2/6. Plug these into the equation. A1 is the first term in the equation which in this case is 31/6.
31/6 + (10-1) 2/6
31/6 + (9)2/6
31/6 + 18/6 = 49/6
Find an equation of the line that goes through the points (7,20) and (2,10). Write your answer in the slope-intercept form, y = mx + b.
Answer: y =
The linear equation of the line that goes through points (7,20) and (2,10) is y = 2x + 6.
What is a linear function?A straight line on the coordinate plane is represented by a linear function.
A linear function always has the same and constant slope.
The formula for a linear function is f(x) = ax + b, where a and b are real values.
A linear equation or function is given as ;
y = mx + b
Now,
At x = 0 ⇒ y = b so it will be a y-intercept.
The slope associated with two points (x₁, y₁) and (x₂, y₂) is given by
Slope = (y₂ - y₁)/(x₂ - x₁)
Slope = (10 - 20)/(2 - 7) = 2
Substitute,(2,10) and m = 2
10 = 2(2) + b
b = 6
Thus, the equation will be y = 2x + 6
Hence "The linear equation of the line that goes through points (7,20) and (2,10) is y = 2x + 6".
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Find the missing angle
RPQ= __________
The value of angle RPQ in the circle is 115 degrees.
How to find the angle in the circle?Using angles of intersecting chord theorem, If two chords intersect inside a circle, then the measure of the angle formed is one half the sum of the measure of the arcs intercepted by the angle and its vertical angle.
Therefore,
∠RPQ = 1 / 2 (arc angle RQ + arc angle SA)
arc angle RQ = 175 degrees
arc angle SA = 55 degrees
Hence,
∠RPQ = 1 / 2 (175 + 55)
∠RPQ = 1 / 2 (230)
∠RPQ = 115 degrees.
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Answer: 115 degrees
Step-by-step explanation:∠
RPQ = 1 / 2 (175 + 55)
∠RPQ = 1 / 2 (230)
∠RPQ = 115 degrees.
**WILL MARK BRAINLIEST AND GIVE 20 POINTS**
Graph the equations y=-1/2x+3 and y=2x-2 in the applet below.
1) After you graph the two lines, be sure to take a screenshot of your work and include it in your answer below.
2) What is the solution to the system of equations?
3) Prove that the answer you provided in part 2 is correct, by substituting the solution into the original equations. Be sure to show all your work.
the solution is (2,2)
step by step explanation:
y=-1/2x+3 : go up 3 on the y-axis, then go down 1 and the the right 2 and repeat.
y=2x-2 : go down 2 the y-axis, then got up 2 and to the right 1 and repeat.
where ever point the two linear lines intersect in the solution point.
PLEAS ANSWER ASAP I WILL GIVE BRIAINLYIST
The coordinates of the vertices of a polygon are (-3, 1), (-3, 3), (-1, 5), (2, 4), and (2, 1).
What is the perimeter of the polygon to the nearest tenth of a unit?
A. 16.0 units
B. 17.2 units
C. 15.4 units
D. 18.8 units
Using the coordinates of the vertices of a polygon (-3, 1), (-3, 3), (-1, 5), (2, 4), and (2, 1) the perimeter of the polygon is 16.0 units
How to find the perimeter of the polygonThe perimeter is calculated by summing the sides
The length of line in an ordered pair is calculated using the formula
d = √{(x₂ - x₁)² + (y₂ - y₁)²}
where
d = distance between the points
x₂ and x₁ = points in x coordinates
y₂ and y₁ = points in y coordinates
(-3, 1) and (-3, 3) =√{(-3 - -3)² + (3 - 1)²} = 2
(-3, 3) and (-1, 5) = √{(-1 - -3)² + (5 - 3)²} = 2√2
(-1, 5) and (2, 4) = √{(2 - -1)² + (4 - 5)²} = √10
(2, 4) and (2, 1) = √{(2 - 2)² + (1 - 4)²} = 3
(2, 1) and (-3, 1) = √{(-3 - 2)² + (1 - 1)²} = 5
The perimeter = 2 + 2√2 + √10 + 3 + 5
The perimeter = 15.9907
The perimeter = 16.0 units
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16.5 + 2.75h = 9h + 7.5 − 4.25h for h. please show how you got
Answer:
h = 4.5
Step-by-step explanation:
16.5 + 2.75h = 9h + 7.5 − 4.25h
Combine like terms on the right side.
16.5 + 2.75h = 4.75h + 7.5
Subtract 4.75 h from both sides.
16.5 - 2h = 7.5
Subtract 16.5 from both sides.
-2h = -9
Divide both sides by -2.
h = 4.5
Answer:
h = 1.2
Step-by-step explanation:
1.) Isolate the variable H. To isolate the variable H, you have to move numbers onto one side and variable onto another. I will show this process in the next steps:
2.) First, move the numbers onto one side. You will subtract 7.5 on both sides, ending up with 16.5 - 7.5 + 2.75h = 9h - 4.25h.
3.) Now, move the variable to one side. You will subtract 2.75h on both sides, and get 16.5 - 7.5 = 9h - 4.25h + 2.75h.
4.) Finally, Simplify. 16.5 - 7.5 = 9. 9h - 4.25h + 2.75h = 7.5h. Therefore, 7.5h = 9.
5.) If we divide both sides by 7.5, we get h = 9/7.5, which is 1.2. By this, h = 1.2
F and H are sets of real numbers defined as follows.
F = { v l v < 4}
H = { v l v ≥ 7}
Write F ∩ H and F ∩ H using interval notation. If the set is empty, write ∅.
For the two sets F = {v | v < 4} and H = {v | v ≥ 7}, F∩H = Ф and
F∪H = {v | v ∈ R} - {4, 5, 6}.
What are sets and subsets?A set is a collection of well-defined objects.
A subset contains all the elements or a few elements of the given set.
The improper subset is when it contains all the elements of the given set and the proper subset is when it doesn't contain all the elements of the given set.
Given, Are two sets F = {v | v < 4} and H = {v | v ≥ 7}.
Now, F∩H are those elements of the sets that are common to both here none of the elements are coom so F∩H is Ф.
F∪H are those elements that are either in F or in H or in both.
∴ F∪H = {v | v < 4 or v ≥ 7} Or F∪H = {v | v ∈ R} - {4, 5, 6}
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A
B
Solve the following inequality.
-3(x - 3) < -2x - x + 1
All real numbers
No solution
x
No solution is the answer
SOLVE F FOR FFF
1 + 8f = -6+ 7f
F =
Answer:
f = -7
Step-by-step explanation:
1 + 8f = -6 + 7f
Add 6 on both sides
7 + 8f = 7f
Subtract 8f on both sides
7 = -1f
Divide by -1 to make f positive
f = -7
If Alex earns $380/week. How much would he make per year, and per month? Explain
Answer:
$19,760 per year
$1,520 per month
Step-by-step explanation:
There are 4 weeks in 1 month, so multiply $380 by 4:
380 x 4 = $1,520 per month.
1 year = 52 weeks:
380 x 52 = $19,760 per year.
May I have Brainliest please? My next rank will be the highest one: A GENIUS! Please help me on this journey to become top of the ranks! I only need 10 more brainliest to become a genius! I would really appreciate it, and it would make my day! Thank you so much, and have a wonderful rest of your day!
A video store is having a sale where you can buy 2 new-release DVDs for $22 or you can buy 4 new-release DVDs for $40. Are these rates equivalent? Explain your reasoning.
Answer: These rates are not equivalent.
Step-by-step explanation:
2/22 = 1/11
4/40 = 1/10
Hence, 1/11 and 1/10 are not equivalent because they do not have the same denominator.
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One antifreeze solution is 41% alcohol and another is 11% alcohol. How much of each mixture should be added to make 30 L of a solution that is 29% alcohol?
Answer:
18 liters of 41% alcohol and 12 liters of 11% alcohol.
Step-by-step explanation:
.41x + .11(30-x) = .29(30) I am going the clear the decimal by multiply all the way through by 100
41x + 11(30 -x ) = 29(30)
41x + 330 -11x = 875 Combine like terms
30x +330 = 875 Subtract 330 from both sides
30x = 540 Dived both sides by 30
x = 18
30 - 18 = 12
Amount Percent Total
x .41 .41x
30 - x .11 .11(30 - x)
30 .29 .29(30)
Look at the total column
.41x + .11(30-x) = .29(30)
contractor bought 10.8 ft2 of sheet metal. He has used 2.3 ft2 so far and has $170 worth of sheet metal remaining. The equation 10.8x−2.3x=170 represents how much sheet metal is remaining and the cost of the remaining amount. How much does sheet metal cost per square foot?
The cost of sheet metal per square foot is $20.
What is a expression? What is a mathematical equation? What is Equation Modelling? What is the general equation of a straight line? What is the significance of slope of line?A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem. The general equation of a straight line is -
y = mx + c
[m] is called slope and it tells the unit rate of change in [y] with respect to [x].
We have a contractor bought 10.8 ft² of sheet metal. He has used 2.3 ft² so far and has $170 worth of sheet metal remaining.
The equation 10.8x − 2.3x = 170 represents how much sheet metal is remaining and the cost of the remaining amount.
We have the following equation -
10.8x − 2.3x = 170
8.5x = 170
x = 170/8.5
x = 20
Therefore, the cost of sheet metal per square foot is $20.
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True or False
Determine if the ratios are equivalent.
4/5 and 15/20
Group of answer choices
True
False
Answer:
False
Step-by-step Explanation:
15:20=5×3 5×4 =3 4=3:4 So it is not equivalent to 4 : 5.
Answer:
this my alt account
Step-by-step explanation:
4.1 Number Talk: Division
Find each quotient mentally.
645 divided by 100
645 divided by 50
48.6 divided by 30
48.6 divided by x
The cleaning service charges $15 per hour. Mr. Henrickson is hiring the cleaning service but does not want to spend more that $75. What is the maximum number of hours that he can hire the cleaning service? Write an inequality and solve.
The maximum number of hours that he can hire the cleaning service is 5.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
Let us consider the number of hours for which the total cost would be the same be x
The first equation would be
$15x > $75
Now equate these equations
$15x - $75 = 0
15x = 75
x = 5
Hence, the maximum number of hours that he can hire the cleaning service is 5.
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2x - 7 + 3x + 10 > x - 6 + 8x - 11
The answer would be (5,0)
Which values of x are solutions to the equation below?
Check all that apply.
4x²2²-30=34
A. X = √√8
B. X=-4
C. X= 4
D. X = 8
E. X = -8
OF. X = -√8
Answer:
Step-by-step explanation:
D
Gasoline costs $2.75 a gallon. At most, how many gallons can be boughts for $22.00.
15.2 gallons of gasoline will cost:
15.2 * 2.75 =$41.8
9.5 gallons of diesel will cost:
9.5 * 3.02= $28.69.
The total amont Grabiel will spend on gasoline and diesel:
$41.8 +28.69= $70.49
Answer:
8
Step-by-step explanation:
2.75x8=22
or
22.00÷2.75=8
(not sure)
Let a,b,c be positive real numbers. Prove the inequality
[tex]\dfrac{(a+b)^2}{c} +\dfrac{c^2}{a} \geq 4b.[/tex]
If a,b,c are positive real numbers, the inequality [tex]\frac{(a+b)^{2} }{c} +\frac{c^{2} }a[/tex] [tex]\geq 4b[/tex] is not correct because it gives the value a³+2a²b+ab²≥4abc
How to find the solution set of an inequality?
Inequality is a mathematical statement showing that two quantities are not equal.
The given inequality is [tex]\frac{(a+b)^{2} }{c}[/tex] +[tex]\frac{c^{2} }{a}[/tex][tex]\geq[/tex]4abc
Simplifying the inequality we have [tex]\frac{(a+b)(a+b)}{c}[/tex] +[tex]\frac{c^{2} }{a }[/tex] [tex]\geq[/tex]4b
This implies that: [tex]\frac{a^{2}+ab+ab+b^{2} }{c}[/tex] +[tex]\frac{c^{2} }{a}[/tex] [tex]\geq[/tex] 4b
Taking the LCM,
[tex]\frac{a^{2}+2ab+b^{2} }{c}[/tex] +[tex]\frac{c^{2} }{a}[/tex] [tex]\geq[/tex]4b
Simplifying further
[tex]\frac{a^{3}+2a^{2}b+ab^{2}+c^{3} }{ac}[/tex] [tex]\geq[/tex]4b
The expression gives that: a³+2a²b+ab²≥4abc
Comparing the values of a,b,c on both sides of the inequality, the inequality is wrong.
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the larger number is 18 more than twice the smaller . if the sun of the numbers is 93 find both numbers
Answer: The numbers are 25 and 68.
Step-by-step explanation:
Answer:
x = 68
y = 25
Step-by-step explanation:
Let the larger number be x and smaller number be y.
Condition 1:x = 18 + 2y ----------------(1)
Condition 2:x + y = 93 -----------------(2)
Put Eq. (1) in Eq. (2)
18 + 2y + y = 93
18 + 3y = 93
Subtract 18 to both sides
3y = 93 - 18
3y = 75
Divide 3 to both sides
y = 72/3
y = 25Put y = 24 in Eq. (1)
x = 18 + 2(25)
x = 18 + 50
x = 68[tex]\rule[225]{225}{2}[/tex]
given h(x)=-x+1, find h(2)h(2).
Answer:
h(2)=-1
h(2)=-1
Step-by-step explanation:
Use the given functions to set up and simplify
h
(
2
)
Which ordered pair could represent another vertex of the image? (0, –1) (2, 6) (4, 0) (6, 1)
Answer:
Step-by-step explanation:
t says that's 4 units distant from the another vertex. So, if a square is formed by 4 equal sides and 4 right angles, then you just have to add 4 units on x or y.
-> (2, 1) -> + 4 units on X
-> = (6, 1)
or
-> (2, 1) -> +4 units on Y
-> = (2, 5)
(2, 5) isn't an answer so the unique possible answer is (6, 1)
Answer: (6, 1)
Geometry help please! 50 points
it is Abe and afe
hope this helps
Given (x – 7)2 = 36, select the values of x.
For the given equation, [tex](x-7)2=36[/tex] the value for [tex]x=25[/tex].
Calculating the value of the unknown variable while keeping the equation balanced on both sides is the process of solving equations.
A condition on a variable is an equation when it ensures that two expressions in the variable have the same value. The equation's solution is the amount of the variable for which the condition is met.
Initially, the equation [tex](x-7)2=36[/tex] must be made simplified to find [tex]x[/tex].
[tex](x-7)2=36[/tex]
By using distributive law,
⇒ [tex](x-7)2=36[/tex]
⇒ [tex]2x-14=36[/tex]
Now add 14 on both sides,
⇒ [tex]2x-14+14 =36+14[/tex]
⇒ [tex]2x =36+14[/tex]
⇒ [tex]2x =50[/tex]
As the next step, divide both sides by 2,
⇒ [tex]\frac{2x }{2} =\frac{50}{2}[/tex]
⇒ [tex]x=25[/tex]
Therefore, after solving the equation step-by-step, [tex]x=25[/tex].
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Write an equation of the line in slope-intercept form. Use x and y for variable.
The exponential model A = 796.2e0.006t describes the population, A, of a country in millions, t years after
2003. Use the model to determine the population of the country in 2003.
Answer:
796.2 million
(796,200,000)
Step-by-step explanation:
[tex]\boxed{\begin{minipage}{9 cm}\underline{General form of an Exponential Function with base $e$}\\\\$y=ae^{kx}$\\\\where:\\\phantom{ww}$\bullet$ $a$ is the initial value ($y$-intercept). \\ \phantom{ww}$\bullet$ $e$ is Euler's number. \\ \phantom{ww}$\bullet$ $k$ is some constant.\\\end{minipage}}[/tex]
Given exponential function:
[tex]A=796.2e^{0.006t}[/tex]
where:
A is the population of the country in millions.t is the number of years after 2003.The initial value is 796.2, which means the population of the country in 2003 was 796.2 million.
8x - 3y = 12
-8x+3y=5.
Answer:
No solution-------------------------
Given system:
8x - 3y = 12,- 8x + 3y = 5.We see constants are same with opposite sign.
To make them same multiply both sides of the second equation by -1:
( -1 )( -8x + 3y) = ( - 1)*5 ⇒ 8x - 3y = - 5Now we have two equations with same left sides but different right sides:
12 = - 5This is false and hence the system has no solution.
The coldest temperature ever recorded in Mathville was - 16 deg * E This happened on January 30th, 1978. The normal low for that day is 19^ * E. How much colder was the record temperature than the normal low temperature?