Considering the definition of an equation and the way to solve it, the correct answer is option C: Riley need to work 13 weeks to save enough money to buy the new television.
Definition of equationAn equation is the equality existing between two algebraic expressions connected through the equals sign in which one or more unknown values appear.
The solution of a equation means determining the value that satisfies it. To solve an equation, keep in mind:
When a value that is adding, when passing to the other member of the equation, it will subtract.If a value you are subtracting goes to the other side of the equation by adding.When a value you are dividing goes to another side of the equation, it will multiply whatever is on the other side.If a value is multiplying it passes to the other side of the equation, it will pass by dividing everything on the other side.Weeks that Riley need to workBeing "x" the number of weeks Riley need to work, and knowing that:
The total amount that Riley requires = $1,290.78The amount of savings Riley already has = $200.73Riley's earnings per week = $83.85the equation in this case is:
200.73 + 83.85x= 1290.78
Solving:
83.85x= 1290.78 - 200.73
83.85x= 1090.05
x= 1090.05 ÷ 83.85
x=13
Finally, Riley need to work 13 weeks.
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Find the value of x, 6,4, 3x, 4x+1
Answer:
If two chords intersect in a circle, then the product of the segments of one chord equals the product of the segments of the other chord.
6(3x) = 4(4x + 1)
18x = 16x + 4
2x = 4
x = 2
Given the sets
A
and
B
expressed in interval notation, find
A
∩
B
.
A
=
(
−
∞
,
−
42
)
∪
(
−
25
,
+
∞
)
B
=
(
−
54
,
70
)
Answer:
Step-by-step explanation:
A∩B=[-54,-42]∪[-25,70]
A recipe says that 2 cups of dry rice will serve 6 people. How many cups of rice are needed to serve 45 people?
(Please Help)
Answer:
7.5 cups pf rice
Step-by-step explanation:
45 divided by 6
Identify the coefficients: -3h - 2h + 6h +9
Answer:
-23h
Step-by-step explanation:
which expression is another way to show 8 x 67 Model your thinking
A
(2+4) +6
B
(2+4) x6
C
(2×4) +6
D
(2×4) × 6
An expression that is equivalent to the expression 8 x 6 is (2 x 4) x 6.
The correct option is D.
What are the equivalent expressions?Expressions that are equivalent to the same thing, even when they have distinct appearances. When we enter the same value(s) for the variable, two algebraic expressions that are equivalent have the same value (s).
Given:
An expression is 8 x 6.
That means 8 multiplied by 6.
Or, 6 multiplied by 8.
To find the equivalent expression:
Simplify the expression by using the multiplication property.
Applying the multiplication property of associativity,
8 can be written as 2 x 4.
So, the expression is,
(2 x 4) x 6.
Therefore, the expression is (2 x 4) x 6.
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The complete question;
Which expression is another way to show 8 x 6?
A
(2+4) +6
B
(2+4) x6
C
(2×4) +6
D
(2×4) × 6
An office will increase salary to its top 8% employees on the basis of a performance score the office created for each employee. The performance score is approximately normal with mean 82.5 and standard deviation 9.25. How high must an employee score in order to qualify for increase in the salary?
Answer:
An employee's score in order to qualify for increase in the salary must be higher than 95.45.
Step-by-step explanation:
Let X represent the performance score of employees.
It is provided that X follows a normal distribution with parameters μ = 82.5 and σ - 9.25.
It is provided that the office will increase salary of its top 8% employees on the basis of a performance score the office created for each employee.
That is, the probability to qualify for increase in the salary is,
P (X > x) = 0.08
⇒ P (X < x) = 0.92
⇒ P (Z < z) = 0.92
The corresponding z-value is,
z = 1.40
Compute the value of x as follows:
\(z=\frac{x-\mu}{\sigma}\\\\1.40=\frac{x-82.5}{9.25}\\\\x=82.5+(1.40\times 9.25)\\\\x=95.45\)
Thus, an employee's score in order to qualify for increase in the salary must be higher than 95.45.
What is the value of k?
k=
8
m
o
4
k
N
M
Answer: It’s 2
Step-by-step explanation:
look at picture
a high school sells students tickets for $5 as well as general admission tickets for $7 to attend thier football games. The school needs to bring in at least $1500 per game in order to maintain the costs of the football team
The cost of students ticket is $37.5and the cost of general admission is $187.5.
What is system of equations?A finite set of equations for which common solutions are sought is referred to in mathematics as a set of simultaneous equations, also known as a system of equations or an equation system.
Assume s be the students tickets cost and g be the general admission cost.
From the given information,
⇒ s + g = 225 ..(1)
5s + 7g = 1500 ..(2)
From equation (1),
s = 225 - g
Plug the value of s in equation (2)
5(225 - g) + 7g = 1500
1125 - 5g + 7g = 1500
2g = 1500 - 1125
2g = 375
g = 187.5
Plug g = 125 in equation (1),
s + 187.5= 225
s = 225 - 187.5
s = 37.5
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In circle K with m/JKL = 74° and JK = 4, find the area of sector
JKL. Round to the nearest hundredth.
Answer:
10.33 square units
Step-by-step explanation:
Area of the sector:
∠JKL = Ф= 74°
JK = r = 4
\(\boxed{\text{\bf Area of sector = $ \dfrac{\theta}{360}\pi r^2$}}\)
Ф is the central angle of the sector.
r is the radius
\(\sf Area \ of \ the \ sector = \dfrac{74}{360}*3.14*4*4\)
= 10.33 square units
(c) Given the expression x, the value of the coefficient is
Answer:
Before a variable there is no coefficient.
There is an invisible 1 infront bc there is no real number. so the 1 appears.
How does one solve for the n+1st term with the nth term of a sequence
Answer:
The answer is option BStep-by-step explanation:
The nth term of the sequence is
A(n) = 5n + 7
To find the (n+1)st term substitute n+1 into the general equation
That's
For (n + 1)st term
A(n+1) = 5(n+ 1) + 7
A(n+1) = 5n + 5 + 7
A(n+1) = 5n + 12Hope this helps you
\( n^{\text{th}} \text{ term is } 5n+7 \)
forget n for a while.
let's call it t .
The \( t^{\text{th}} \text{ term is } 5t+7 \)
agreed? I don't think there should be a problem.
you're asked what's the \((t+1)^{\text{th}}\) term.
let's call it u . so just like we did before,
\( u^{\text{th}} \text{ term is } 5u+7 \)
but we know, \(u=t+1\)
So, \(5u+7=5(t+1)+7=5t+12\)
does that answer your question?
The mean mass of 11 players in football team is 65.2kg .The mean mass of the team plus a substitute is 65.4kg what is the mass of the substitute
1 Suppose the equation 28 = x. 4 in the Example is written in the form 4x = 28.
Is 7 still a solution? Explain.
Answer: yes
Step-by-step explanation:
if u substitute 7 into the x for 4x - 28 then it would be the same as 4(7), because any variable next to a number means multiplication.
hope this was an easier way for u to understand
Answer:
Yes, 7 is still a solution.
Step-by-step explanation:
3,998-(-7)= can you please help me with this problem
Answer:
4005
Step-by-step explanation:
3,998 - (-7) = ?
Two negative signs will make a positive sign.
3,998 - (-7) = 3998 + 7 = 4005
So, the answer is 4005
In 1995, wolves were introduced into Yellowstone Park.
The function `w\left(x\right)=14\cdot1.08^{x}` models the number of wolves, `w`, in the years since 1995, `x`.
By what percent does the number of wolves change each year?
In this manner, the number of wolves changes by around 8 percentage 8% each year based on the given work.
Percent calculation.
To determine the percentage change within the number of wolves each year, we ought to look at the development rate of the work w(x) = 14 * 1.08^x.
The development rate in this case is given by the example of 1.08, which speaks to the figure by which the number of wolves increments each year. In this work, the coefficient 1.08 speaks to a development rate of 8% per year.
To calculate the percentage change, we subtract 1 from the growth rate and increase by 100 to change over it to a rate:
Percentage change = (1.08 - 1) * 100 = 0.08 * 100 = 8%.
In this manner, the number of wolves changes by around 8 percentage 8% each year based on the given work.
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Kevin compró 5 libras de nueces por $50.89. ¿Cuánto fue el costo por libra?
A. $ 0.18 B. $5
C. $10 D. $10.17
Answer:
la respuesta es D
If
m
�
�
⌢
=
5
4
∘
m
GT
⌢
=54
∘
and
m
�
�
⌢
=
16
0
∘
m
YC
⌢
=160
∘
, find
m
∠
�
m∠W.
Answer:
∠ W = 53°
Step-by-step explanation:
the measure of the secant- secant angle W is half the difference of the measures of the intercepted arcs , that is
∠ W = \(\frac{1}{2}\) (YC - GT) = \(\frac{1}{2}\) (160 - 54)° = \(\frac{1}{2}\) × 106° = 53°
can someone please help me!!!
Answer:
12x9= 124
Step-by-step explanation:
if you multply it right
Find the missing integer that makes the following addition statement true.
+ 3 = 2+3=2
The missing integer that makes the following addition statement true is -1.
What is the commutative law of addition?The commutative law of addition is also known as the law of cumulative addition and it states that when two numbers are added together, then, the outcome is equal to the addition of their interchanged position because addition is considered as a binary operation.
Mathematically, the commutative law of addition can be represented using the following formula:
A + B = B + A.
What is an integer?An integer can be defined as a whole number that may either be positive, negative, or zero such as -1, 0, 1, 2, 3, etc.
Now, we would determine the missing number:
x + 3 = 2
x = 2 - 3
x = -1.
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Complete Question:
Find the missing integer that makes the following addition statement true.
+ 3 = 2
The diameter of a circle is 3 inches. What is the area?Give the exact answer in simplest form. _____ square inches. (pi, fractions)
The radius of a circle is half the diameter.
Thus, the radius (r) is >>>
\(r=\frac{3}{2}\)The area of a circle is given by the formula,
\(A=\pi r^2\)Where
r is the radius
Substituting the radius value into the area formula, we have:
\(\begin{gathered} A=\pi r^2 \\ A=\pi(\frac{3}{2})^2 \\ A=\pi(\frac{9}{4}) \\ A=\frac{9\pi}{4} \end{gathered}\)x-6/2 = 10 help again pls
Answer:
30
Step-by-step explanation:
get the x by itself on one side to solve
x-6/2=10
multiply both sides by 2 and divide by 6 which cancels out s x is by itself
x=10*6/2
simplify
x=60/2
x=30
Answer:
x = 13
Step-by-step explanation:
Given equation,
→ x - (6/2) = 10
Now the value of x will be,
→ x - (6/2) = 10
→ x = 10 + (6/2)
→ x = 10 + 3
→ [ x = 13 ]
Hence, the value of x is 13.
Consider the polynomial function q(x) = -2x^8 + 5x^6 -3x^5 + 50 What is the end behaviour of the graph of q?
The end behavior of the function q(x) is:
when x → ∞, q(x) → -∞when x → -∞, q(x) → -∞How to identify the end behavior?To know the end behavior we need to look at the degree and the sign of the leading coefficient.
If the degree is even, and the leading coefficient is negative, then in both ends the function will tend to negative infinity.
Here we can see that the function is:
q(x) = -2x⁸ + 5x⁶ - 3x⁵ + 50
So, the degree is 8, and the leading coefficient is -2, then the end behavior of the function is:
when x → ∞, q(x) → -∞
when x → -∞, q(x) → -∞
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Answer it pls option c
Answer:
\(x = \frac{1}{4}\)
Step-by-step explanation:
\(\frac{x}{2} +\frac{3}{4} =\frac{7}{8}\)
→ Find the LCM of the denominators (2,4 and 8)
LCM = 8
→ Multiply the whole equation by 8 to get rid of the fractions
4x + 6 = 7
→ Minus 6 from both sides to isolate 4x
4x = 1
→ Divide both sides by 4 to isolate x
\(x = \frac{1}{4}\)
Answer:
\(x = \frac{1}{4} \)Step-by-step explanation:
\( \frac{x}{2} + \frac{3}{4} = \frac{7}{8} \)
Multiply both sides of the equation by 8
\( \frac{x}{2} \times 8 + \frac{3}{4} \times 8 = \frac{7}{8} \)
\(4x + 6 = 7\)
Move constant to R.H.S and change its sign
\(4x = 7 - 6\)
Subtract the numbers
\(4x = 1\)
Divide both sides of the equation by 4
\( \frac{4x}{4} = \frac{1}{4} \)
Calculate
\(x = \frac{1}{4} \)
hope this helps..
Best regards!!
An equilateral triangle was rotated to create this figure. What is true about the axis of rotation?
The true statement about the axis of rotation is the option;
It is parallel to a side of the equilateral triangle, but is separate from the equilateral triangle.
What is an axis of rotation?The axis of rotation is a straight line around which all points on a rotating body rotates.
The diagram shows a figure with a hollow cylindrical cross section and triangular cross section on the left and right, which indicates that the figure is created by the rotation of the equilateral triangle about height of the cylinder, such that the axis of rotation is a vertical line through the center of the hollow cylinder. Therefore, the axis of rotation is parallel to the height of the cylinder, and therefore, it is parallel to the base of the equilateral triangle, but it it seperate from walls of the cylinder, and therefore, separate from the equilateral triangle
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3. Chris rode his bike along the same route every day for 60 days. He logged that he had gone exactly 127.8 miles.How many miles did he bike over the course of two weeks
Step-by-step explanation:
2wks = 24 days
If he spent 60days going 127.8 miles
He will spend 14 days going X miles
60/14 =127.8/X cross multiply
60X= 14×127.8
X=( 14×127.8)÷60
X= 29.82 miles
solve the following equation by completing the square. x^2-8x-2=0
\(x^2 -8x-2=0\\\\x^2 -8x=2\\\\x^2 -8x+16=18\\\\(x-4)^2 =18\\\\x-4=\pm \sqrt{18}\\\\\boxed{x=4 \pm \sqrt{18}}\)
Write the coordinates of the vertices after a dilation with a scale factor of 1/5
The coordinates of the vertices after a dilation with a scale factor of 1/5 are A' = (-1, -2), B' = (2, 0), C' = (1, 2) and D' = (-2, 0)
How to write the coordinates of the vertices after a dilation with a scale factor of 1/5?The complete question is added as an attachment
From the attached figure, we have the vertices before dilation to be:
A = (-5, -10)
B = (10, 0)
C = (5, 10)
D = (-10, 0)
The scale factor of dilation is given as:
k = 1/5
So, the coordinates of the vertices after a dilation with a scale factor of 1/5 are calculated using
Image = k * Pre-image
This gives
A' = 1/5 * (-5, -10)
B' = 1/5 * (10, 0)
C' = 1/5 * (5, 10)
D' = 1/5 * (-10, 0)
Evaluate the products
A' = (-1, -2)
B' = (2, 0)
C' = (1, 2)
D' = (-2, 0)
Hence, the coordinates of the vertices after a dilation with a scale factor of 1/5 are A' = (-1, -2), B' = (2, 0), C' = (1, 2) and D' = (-2, 0)
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If this set of points was graphed on a coordinate system, the graph would pass the Vertical Line
Test.
{(5,7), (2,1), (4,0), (-1,7), (3,9), (-6,-2)}
True
False
Find the volume of the solid whose base is a triangle with vertices (0,0), (0,3), and (5,0). Slices perpendicular to the x-axis are semicircles. Enter answer using exact values.
The volume of the solid whose base is a triangle with vertices (0,0), (0,3), and (5,0) is 25π/12 cubic units.
What is a triangle?
A triangle is a closed geometric shape that is formed by connecting three line segments. These line segments are called sides, and the points where they meet are called vertices. A triangle has three sides, three angles, and three vertices.
To start, let's graph the triangle to get a better understanding of the problem:
(0,3) *
|\
| \
| \
| \
| \
(0,0) *-----*-----> x
(5,0)
The height of this slice is given by the line from the point (x,0) to the point (0,3), which has equation y = 3/5 * x + 0. The radius of the semicircle is half the height of the slice, which is given by the equation r = 3/10 * x.
The area of a semicircle is πr²/2, so the volume of this slice is:
V(x) = π * (3/10 * x)² / 2 * dx
To find the total volume of the solid, we need to integrate this expression over the range of x values that covers the entire base of the solid, which is from x=0 to x=5:
V = ∫₀₅ π * (3/10 * x)² / 2 dx
V = π/20 * ∫₀₅ x² dx
V = π/20 * [x³/3] from 0 to 5
V = π/20 * (5³/3)
V = π/4 * (25/3)
V = 25π/12
Therefore, the volume of the solid is 25π/12 cubic units.
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PLZZZZZZZZZZZZZZZZZZZZ HELPPPPPPPPPP MEEEEEEEEEE
Mariam makes $50 a week.
a) Show this relationship in a graph below. Try make graph or jus label the numbers
b) What is the unit rate of the line in the equation?
c) What is the connection between the unit rate and the amount of money Mariam makes per week?
d) Write the equation for this relationship.
e) Is this a proportional relationship? Justify your answer.
Answer:
b
Step-by-step explanation: