Subtraction is a mathematical operation that reflects the removal of things from a collection. The difference between −9 4/5 and −3 2/3 is -6 2/15.
What is subtraction?Subtraction is a mathematical operation that reflects the removal of things from a collection. The negative symbol represents subtraction.
The difference between −9 4/5 and −3 2/3 is,
−9 4/5 − (−3 2/3)
= −9 4/5 + 3 2/3
= (−9+3) + (−4/5 + 2/3)
= −6 + (-2/15)
= -6 2/15
Hence, The difference between −9 4/5 and −3 2/3 is -6 2/15.
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NEED HELP ASAP!!
This graph shows the total number of patients seen by a doctor over the course of a 5-day workweek.
What are the domain and range of this relationship??
Using the domain and range concepts, we have that:
The domain is: {0, 1, 2, 3, 4, 5}.The range is: {0, 12, 24, 36, 48, 60}.What are the domain and the range of a function?The domain of a function is the set that contains all the values of the input. In a graph, it is given by the values of x.The range of a function is the set that contains all the values of the output. In a graph, it is given by the values of y.Hence, considering the given graph:
The domain is: {0, 1, 2, 3, 4, 5}.The range is: {0, 12, 24, 36, 48, 60}.More can be learned about the domain and the range of a data-set at https://brainly.com/question/10891721
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Problem Set
Show instructions
Question 4 (1 point)
Given a triangle with sides of length 5 and 8, find the range of possible values for the third side. (Note: left
hand side of inequality in Blank 1 and right hand side in Blank 2)
Blank 1:
Blank 2:
____
Answer:
3 < x < 13
Step-by-step explanation:
Triangle Inequality Theorem
The sum of the lengths of any two sides of a triangle is greater than the length of the third side.
Let x be the length of the unknown side.
Therefore, x will either be the longest side or one of the shorter sides.
Therefore:
x < 5 + 8
⇒ x < 13
And:
8 < 5 + x
⇒ 3 < x
So the range of possible values of the third side is greater than 3 and less than 13: 3 < x < 13
Write at least 1 full sentence explaining the steps you would take to evaluate an expression.
The step you would take to evaluate an expression is to follow the order of operation
What are expressions?Expressions are mathematical statements that involve variables, terms, coefficients and mathematical operators
How to determine the steps?Different expressions require different ways of solving
However, the general guide is that the order of operation must be followed
The order of operation is represented by the acronym BEDMAS
Which means
Bracket
Exponent
Division
Multiplication
Addition
Subtraction
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A triangle is translated by using the rule (x,y) →(x-4.y+1). Which describes how the figure is moved?
O four units left and one unit down
O four units left and one unit up
O one unit right and four units down
O one unit right and four units up
Answer:
Four units left and one unit up.
Step-by-step explanation
Adding -4 to each x-coordinate shifts the figure to the left 4 units.
Adding +1 to each y-coordinate shifts the figure up 1 unit.
The figure is moved ...
four units left and one unit up
Answer:
2nd option
Step-by-step explanation:
x-4 = 4 left
y+1 = 1 up
2nd option
Briefly explain how multiple regression enhances the two primary purposes of regression analysis.
The statistical goal of multiple regression analysis is to build a linear equation model that identifies the optimal weighted linear combination of independent variables in the study in order to optimally predict the reference variable.
Regression analysis is usually performed for one of two purposes. Predicting the value of the dependent variable of a person whose information about the explanatory variable is available, or estimating the effect of the explanatory variable on the dependent variable.
In multiple regression analysis, researchers can determine the strength of the relationship between the outcome (dependent variable) and multiple predictors, and the importance of each predictor in the relationship, often the effect of other predictors. It can be evaluated by statistically eliminating it.
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Select the correct answer from each drop-down menu.
The endpoints of the longest chord on a circle are (4, 5.5) and (4, 10.5).
The center of the circle is at the point (-4, 6.75)(4, 8)(4, 9.25)(4, 16), and its radius is 1.252.53.756.25 units. The equation of this circle in standard form is (x - 4)^2 + (y - 8)^2 = 2.5(x + 4)^2 + (y + 8)^2 = 2.5(x - 4)^2 + (y - 8)^2 = 6.25(x + 4)^2 + (y + 8)^2 = 6.25.
The correct options regarding the circle with endpoints of the longest chord at (4, 5.5) and (4, 10.5) are:
The center is (4,8).The radius is of 2.5 units.[tex](x - 4)^2 + (y - 8)^2 = 6.25[/tex]What is the equation of a circle?The equation of a circle of center [tex](x_0, y_0)[/tex] and radius r is given by:
[tex](x - x_0)^2 + (y - y_0)^2 = r^2[/tex]
The center is the midpoint of the chords, hence:
[tex]x_0 = \frac{4 + 4}{2} = 4[/tex].[tex]y_0 = \frac{5.5 + 10.5}{2} = 8[/tex].The radius is half the distance between the chords, hence:
[tex]r = 0.5\sqrt{(4-4)^2 + (10.5 - 5.5)^2} = 0.5 = 2.5[/tex].
Hence the equation is:
[tex](x - x_0)^2 + (y - y_0)^2 = r^2[/tex]
[tex](x - 4)^2 + (y - 8)^2 = 2.5^2[/tex]
[tex](x - 4)^2 + (y - 8)^2 = 6.25[/tex]
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Does dy/dx in a graph mean the value of f'(x), or the slope of f'(x) at the point?
What is a disadvantage of debt consolidation?
OA. You can have payments that are lower.
B. You can spread payments over a longer time.
о C. You can have a lower interest rate.
о D. You can pay more money in the long term.
A disadvantage of debt consolidation is you can pay more money in the long term.
What is debt consolidation?
Debt consolidation is when a person takes out a new loan in order to pay off an existing loan. Debt consolidation increases the money you pay in the long term because you would still have to pay for the new debt incurred.
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Solve the following linear system by elimination. Check your solution:
1. x + 5y =4
2. 4x + 12y = 8
Answer:
(- 1, 1 )
Step-by-step explanation:
x + 5y = 4 → (1)
4x + 12y = 8 → (2)
multiplying (1) by - 4 and adding to (2) will eliminate x
- 4x - 20y = - 16 → (3)
add (2) and (3) term by term to eliminate x
0 - 8y = - 8
- 8y = - 8 ( divide both sides by - 8 )
y = 1
substitute y = 1 into either of the 2 equations and solve for x
substituting into (1)
x + 5(1) = 4
x + 5 = 4 ( subtract 5 from both sides )
x = - 1
As a check
substitute these values into the left side of both equations and if equal to the right side then they are the solution.
- 1 + 5(1) = - 1 + 5 = 4 = right side
4(- 1) + 12(1) = - 4 + 12 = 8 = right side
(- 1, 1 ) is the solution to the system of equations
117 Mr. Turtle, Mrs. Squirrel and Ms. Pigeon work at the Magic Forest's post office. Mr. Turtle can
deliver a package from the Southern Glade to the Northern Glade in 3 days, while Ms. Pigeon can
deliver it in 30 minutes. How much time will the same job take Mrs. Squirrel, if the ratio of Mr.
Turtle's time to the Mrs. Squirrel's time is the same as the ratio of Mrs. Squirrel's time to Ms.
Pigeon's time?
The proportion shows that the time taken to do the same job by Mrs. Squirrel is 6 hours.
How to calculate the value?From the information given, the ratios are:
Turtle / Squirrel = Squirrel / Pigeon
3/x = x/(1/48)
x² = 1/16
x = 1/4
The number of days will be:
= 1/4 × 24
= 6 hours.
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PLEASE HELP, kinda forgot how to do it
Answer:
20
Step-by-step explanation:
Rise over run
Answer:
m = 20
Step-by-step explanation:
What is the measure of the corresponding central angle for XY in radians?
Answer:
4 radians
Step-by-step explanation:
Arc Length (Radians) = rθ
Given Arc Length XY = 40cm and radius, r = 10cm,
we will substitute these 2 values into the formula to find θ.
(10)θ = 40
θ = 40 / 10
= 4 radians
Answer:
A
Step-by-step explanation:
the length of arc XY is calculated as
arc = circumference of circle × fraction of circle
= 2πr × [tex]\frac{0}{2\pi }[/tex] ( r is radius and Θ is central angle )
here arc = 40 and r = 10 , then
2π × 10 ×[tex]\frac{0}{2\pi }[/tex] = 40
20π × [tex]\frac{0}{2\pi }[/tex] = 40 ( cancel 20π and 2π by 2π )
10Θ = 40 ( divide both sides by 10 )
Θ = 4 radians
Can someone help me out on these geometry fill in the blanks questions? Just questions 2,3,4.. it’s urgent
In an interview of 45 students, 12 liked Mathematics and Science, 5 liked Mathematics and English, 25 liked Mathematics; 23 liked Science; 4 liked all three subjects; 15 liked English; 10 liked Science and English. How many students did not like any of the subjects?
Answer:
Step-by-step explanation:
plus 18 and subtract 4
The table shows data from a survey about the number of times families eat at restaurants during a week. The families are either from Rome, Italy, or New York, New York:
High Low Q1 Q3 IQR Median Mean σ
Rome 21 1 1.5 7.5 6 4.5 6.5 6.6
New York 20 1 3.5 7.5 4 5 6.5 5.2
Which of the choices below best describes how to measure the center of these data?
Both centers are best described by the mean.
Both centers are best described by the median.
The Rome data center is best described by the mean. The New York data center is best described by the median.
The Rome data center is best described by the median. The New York data center is best described by the mean.
Choices for the measure of center that is best are: C. Rome data center is best described by the mean while that of New York data is best described by the median.
What are the Measures of Center?The measures of center include the mean and the median. Mean is best for a symmetrical data distribution while median is good for a skewed data distribution with an outlier.
The data for New work has an outlier, while that of Rome does not. Therefore, the best choices for the measure of center is: C. Rome data center is best described by the mean while that of New York data is best described by the median.
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What else would need to be congruent to show that triangle ABC is congruent to DEF by AAS?
Answer:
B
Step-by-step explanation:
In order the angles <C and <F are shared, then <B and <E, then the side equaling 10. This together proves that this triangle is congruent because of AAS (angle,angle,side) a triangle congruency rule.
What is the logarithmic form of 13² = 169?
The logarithmic form of 13² = 169 is ㏒₁₃ 169 = 2
How to determine the logarithmic formUsing the logarithmic rule , we have that
㏒ₙn = bⁿ
Given 13² = 169
It is important to note that it can be written either in the logarithmic form or in the index form.
In this case, we have written in the index form as .
㏒₁₃ 169 = 2
Thus, the logarithmic form of 13² = 169 is ㏒₁₃ 169 = 2
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A triangle has vertices as D(4,5), E(1,8) and F (1,2). Show that the height from D is also the median from D.
The x-coordinate of the altitude on EF is the same as the point D(4, 5) and by calculation, the height from D (1, 5) is also median from D (1, 5)
How can the height and median be calculated?The height from D is perpendicular to EF
The slope of EF = (8 - 2)/(1 - 1) = ∞
Therefore, the side EF is parallel to the y-axis.
Therefore, the coordinates of the point of intersection of the altitude from D and the line EF is (1, 5)
The median is the midpoint of the side EF
The coordinates of the midpoint is found as follows;
[tex] \mathbf{ \left(1 + \frac{1 - 1}{2}, \: 1 + \frac{8 - 2}{2}\right)} = (1 ,5)[/tex]
Therefore;
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is 2x 2 times or 2x mean 2 x or 1x+1x or 0x+2?
Answer:
Generally x means times so the best and not dummest option is 2 times
2x and 2 x is the same the 2 x is spaced out a little
Step-by-step explanation:
Point X is the incenter of ΔABC.
Triangle A B C has point X as its incenter. Lines are drawn from the points of the triangle to point X. Lines are drawn from point X to the sides of the triangle to form right angles. Line segments X F, X G, and X E are formed.
If EX = 4z + 1, XF = 2z + 7, and mABC = 44°, find the following measures.
GX =
there are 12 students including 4 boys in a classroom. Find the number of girls in 8 such classrooms
Answer:
64 girls
Step-by-step explanation:
Number of boys in a classroom: 4
Total no. of students in the classroom: 12
Number of girls in 1 classroom: 12-4 = 8
Number of girls in 8 such classrooms: 8 × 8 = 64
Substituting the equation y = 4x + 1 into the equation 2y = -x – 1 will produce the equation ________.
a.)
7x = -3
b.)
7x = 1
c.)
9x = -3
d.)
9x = 1
Answer:
C.
Step-by-step explanation:
This is substitution method in solving simulteanous equations.
given y = 4x + 1
we will substitute y into 2y = -x-1
[tex]2(4x + 1) = - x - 1 \\ 8x + 2 = - x - 1 \\ 8x + x + 2 = - 1 \\ 9x + 2 = - 1 \\ 9x = - 1 - 2 \\ 9x = - 3[/tex]
Therefore the answer is C.
[tex]\Large\maltese\underline{\textsf{A. What is Asked}}[/tex]
Substituting the equation given into another equation will produce another equation. But which one?
[tex]\Large\maltese\underline{\textsf{B. This problem has been solved!}}[/tex]
[tex]\bf{2y=-x-1}[/tex] | substitute the required equation
[tex]\bf{2(4x+1)=-x-1}[/tex] | solve in terms of x
[tex]\bf{8x+2=-x-1}[/tex] | carry on solving
[tex]\bf{9x+2=-1}[/tex] | carry on solving
[tex]\bf{9x=-3[/tex]
[tex]\cline{1-2}[/tex]
[tex]\bf{Result:}[/tex]
[tex]\bf{=The\;third\;option}[/tex]
[tex]\LARGE\boxed{\bf{aesthetics\not1\theta 1}}[/tex]
Identical prizes are to be given to two winners from a group of 12 contestants. What counting formula would you use to determine how many ways the prizes could be given out
We will use a combination formula to determine how many ways the prizes could be given out.
In mathematics, a combination is a way of selecting items from a collection where the order of selection does not matter. Suppose we have a set of three numbers P, Q and R. Then in how many ways we can select two numbers from each set, is defined by combination.
The combination is defined as “An arrangement of objects where the order in which the objects are selected does not matter.” The combination means “Selection of things”, where the order of things has no importance.
The formulas nCk is popularly known as counting formula.
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Solve for z square root of z^2-8- square root of 6z-17=0
[tex]\large\displaystyle\text{$\begin{gathered}\sf \sqrt{z^{2}-8 }-\sqrt{6z-17}=0 \end{gathered}$}[/tex]
Simplify the left side. Yes n is a positive integer greater than x and a is a real number or a factor, then [tex]\bf{\sqrt[n]{a^{x} }=a^{\frac{x}{n} }. }[/tex]
[tex]\large\displaystyle\text{$\begin{gathered}\sf \bf{(z^{2}-8)^{\frac{1}{2} }-\sqrt{6z-17}=0 } \end{gathered}$}[/tex]
If n is a positive integer greater than x and a is a real number or a factor, then [tex]\bf{\sqrt[n]{a^{x} }=a^{\frac{x}{n} }. }[/tex]
[tex]\large\displaystyle\text{$\begin{gathered}\sf \bf{(z^{2}-8)^{\frac{1}{2} }-(6z-17)^{\frac{1}{2}} =0 } \end{gathered}$}[/tex]
Draw each side of the equation. The solution is the x value of the point of intersection.
[tex]\red{\underbrace{\overbrace{\boxed{\boldsymbol{\sf{\green{z=3}}}}} \ \ \to \ \ \ Answer}}[/tex]
{ Pisces04 }Answer:
Step-by-step explanation:
[tex]\sqrt{z^2-8} -\sqrt{6z-17} =0\\\sqrt{z^2-8} =\sqrt{6z-17} \\6z > 17\\z > \frac{17}{6} \\z^2-8=0\\z^2 > 8\\so \\z < -\sqrt{8} \\or\\z > \sqrt{8} \\combining\\z > \frac{17}{6} \\again\\z^2-8=6z-17\\z^2-6z-8+17=0\\z^2-6z+9=0\\z^2-3z-3z+9=0\\z(z-3)-3(z-3)=0\\(z-3)(z-3)=0\\z=3[/tex]
For which value of b can the expression x2 + bx + 18 be factored?
An expression is defined as a set of numbers, variables, and mathematical operations. The value of b for which the expression x² + bx + 18 can be factored is 9.
What is an Expression?In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
The value of b for which the given expression x² + bx + 18 can be factored is 9. This will make the expression factored as (x+3) and (x+6).
Thus, the value of b for which the expression x² + bx + 18 can be factored is 9.
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PLEASE HELP!!
Triangle not drawn to scale
Given: m & B = 18°, b = 9, and c = 20. Find
m & Co to nearest whole number.
Answer:
43°
Step-by-step explanation:
Calculating for the measure of angle C using
sine rule[tex] \frac{sin18}{9} = \frac{sinc}{20} \\ sinc = \frac{sin18 \times 20}{9} \\ sinc = 0.6867 \\ c = \csc(0.6867) \\ c = 43.3869 \\ c = 43 \: degrees[/tex]
What is the system of inequalities associated with the following graph?
A) {y>−2
{x+y≥1
B){y<−2
{x+y≥1
C){y<−2
{x+y<1
D){y< -2
{x+y> 1
Answer: C
Step-by-step explanation:
[tex]y=-2[/tex] is dotted and shaded below, so it represents [tex]y < -2[/tex].
Also, [tex]x+y=1[/tex] is shaded above, so it represents [tex]x+y < 1[/tex].
Li invests money in a savings account. She wants to know the amount of simple interest that she will earn in 6 years at 3.75 percent. What additional information does she need to find this amount?
Answer:
She needs the starting amount of money to create an equation.
Step-by-step explanation:
The formula that she can use when she has the starting amount or the y-intercept is this one: f(t)=P(1+b)^t.
t=time
b=percent
P=starting value
The formula with the information given is: f(6)=P(1+3.75)^6
Hope this helps!
If not, I am sorry.
Answer:
Principal
Step-by-step explanation:
Since, the amount in the simple interest is,
Where, P is the principal amount,
r is the annual rate,
t is the time ( in years ),
Here, r = 3.75 %, t = 6 years,
Thus, By the above explanation,
It is clear that, we need the value of P, that is, principal to find the amount.
(a) sin x° = 0.8
Given that x is an obtuse angle, find x.
(b) cos 127° = -cos yo
Given that y is an acute angle, find y.
The value of x is 126.87° and the value of y is 53°.
What is an obtuse and an acute angle?An obtuse angle is an angle that is greater than 90° but lesser than 180° while an acute angle is an angle between 0-90°.
From the given information:
sin x° = 0.8
x = sin⁻¹ (0.8)
x = 53.13°
x + 53.1° = 180°
x = 180° -53.13°
x = 126.87°
If cos 127° = -cos y°,
-cos y = -0.6018
cos y = 0.6018
y = cos⁻¹ (0.6018)
y = 53°
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Michell is making a sign for her sister's birthday. The sign says "HAPPY BIRTHDAY" in all capital letters. If each letter is 4/5 inches long estimate the length needed to spell out “HAPPY BIRTHDAY."
ps.also add 4/5 for the space between the two words..................... Thanks
Answer:
5/4 is the correct answer for this question