Maria gathered the data in the table. She finds the line of best fit to be y = 2.78x – 4.4. What is the residual value when x = 4?
Solution:
The line of best fit is given as y=2.78x-4.4
We need to find the residual value when x=4.
The residual value is an estimate of the wholesale value .To find the residual value we plug in x=4 in the given line of best fit.The corresponding y value will give the predicted value.
y=2.78x-4.4
Substituting x=4,
y=2.78(4)-4.4
y=11.12-4
y=7.12.
The predicted value when x=4 is y=7.12.
Residual value = predicted value - Actual value -=7.12 - actual value.
using radicals, write an expression for the expression y 1/2
Graph f(x)=34x+2. Use the line tool and select two points to graph the line.
we have
[tex]f(x)=\frac{3}{4}x+2[/tex]
To graph the linear equation find the intercepts
we know that
The x-intercept is the value of x when the value of the function is equal to zero
The y-intercept is the value of the function when the value of x is equal to zero
so
Find the y-intercept
for [tex]x=0[/tex]
[tex]f(x)=\frac{3}{4}*0+2=2[/tex]
the y-intercept is the point [tex](0,2)[/tex]
Find the x-intercept
for [tex]f(x)=0[/tex]
[tex]0=\frac{3}{4}x+2[/tex]
Multiply by [tex]4[/tex] both sides
[tex]0=3x+8[/tex]
[tex]x=-\frac{8}{3}=-2.667[/tex]
the x-intercept is the point [tex](-2.667,0)[/tex]
Plot the intercepts to graph the line
The answer in the attached figure
Answer:
the answer is (-2,0) and (0, 2)
Good luck!
Geometry help please?
4 questions.
Thanks!
the set of ____ contains all the whole numbers amd their opposite
Sarah said that 0.00001 is bigger than 0.001 because the first number has more digits to the right of the decimal point. Is Sarah correct? Explain your thinking using negative powers of 10 and the number line
The number 0.001 is greater than the number 0.00001. She is incorrect.
What is Algebra?The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
PEMDAS rule means for the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.
Inequality is defined as an equation that does not contain an equal sign. Inequality is a term that describes a statement's relative size and can be used to compare these two claims.
Sarah said that 0.00001 is bigger than 0.001 because the first number has more digits to the right of the decimal point. She is incorrect.
0.001 > 0.00001
Because the number 0.001 is greater than the number 0.00001.
More about the Algebra link is given below.
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What is the value of x in the equation 2x + 3y = 36, when y = 6
2x+3y=36
y=6
2x +3(6) = 36
2x +18 =36
2x = 18
x = 9
Answer:
The value of the provide expression is 9.
Step-by-step explanation:
Consider the provided expression.
[tex]2x + 3y = 36 [/tex]
We need to find the value of the expression, for x when y=6
Substitute the respective values in the provided expression.
[tex]2x + 3(6) = 36 [/tex]
[tex]2x + 18 = 36 [/tex]
[tex]2x= 36-18 [/tex]
[tex]2x= 18 [/tex]
[tex]x= 9 [/tex]
Hence, the value of the provide expression is 9.
ABCD is a kite, find the length of BD
Answers:
A. 8
B. 16
C. 12
D. 24
Describe the cross section
Answer:
D. Square
Step-by-step explanation:
A cross section is the shape that we get when we cut the object.
Here the given object is a cube.
It is cut straight through the middle.
Imagine a cube cut through the middle, when we look at the same on the top, we get square.
Since in a cube all the sides are equal.
Therefore, we get square when we cut the cube straight through the middle.
Answer: D. Square.
The cross-section of the shape in the image is a square.
Here's why:
The shape in the image is a cube.
A cube has six square faces.
When you cut a cube through the middle along any of its axes, the resulting cross-section will always be a square.
Therefore, the answer is D. square.
Identify the 35th term of an arithmetic sequence when a1 = −7 and a 18 = 95
Of 60 students, 24 students have a pet. What is the ratio of students with pets to students without pets?
Converting fractions to decimals worksheet 7th grade
A pack of cinnamon scented pancils sells for $7.00.What is the sales tax rate if the total cost of the pencils is $7.49?
The amount of sales tax rate on the scented pencils will be equal to 7%.
What is the Percentage?The Latin phrase "per centum," which means "by the hundred," is where the English word "percentage" comes from. Percentage segments are those with a numerator of 100. In other words, it is a connection where the whole is always deemed to be valued 100.
As per the given information in the question,
Price of scented pencils = $7
Price of pencils after-tax = $7.49
Then, the percentage of tax on the pencils will be,
= (7.49 - 7)/7 × 100
= 0.07 × 100
= 7%
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1.17 - 0.07a + (-3.92a)
Answer:
The simplified form of the given expression is [tex]1.17-3.99a[/tex].
Step-by-step explanation:
The given expression is
[tex]1.17-0.07a+(-3.92a)[/tex]
The given expression can be written as
[tex]1.17-0.07a-3.92a[/tex]
Now, combine the like terms.
[tex]1.17+(-0.07a-3.92a)[/tex]
[tex]1.17+(-3.99a)[/tex]
[tex]1.17-3.99a[/tex]
Therefore the simplified form of the given expression is [tex]1.17-3.99a[/tex].
The number of CDs sold has decreased each year. The graph shows the number of CDs sold in a given year. (coordinate graph) Which is a reasonable inference for the number of CDs at month 4?
7x=2x-35
A. 7
B.5
C.-5
D.-7
PLEASE HELP I NEED TO GET THIS CORRECT.
Look at the following expression.
5(3x + 2)
Which of the answer choices below is NOT an equivalent expression?
A.15x + 10
B.10x + 15
C.5 ∙ 3x + 5 ∙ 2
D.5(2 + 3x)
What are the solutions to the inequality? Graph the solutions. x/5 greater than or equal to -2
In triangle ΔABC, ∠C is a right angle and CD is the height to AB, Find the angles in ΔCBD and ΔCAD if: m∠A = α
m∠DBC =
m∠DCB =
m∠CDB =
m∠ACD =
m∠ADC =
The equation ax=0 has only the solution x=0 because
am i correct ? geometry problem
Mayumi is constructing a line through point P that is perpendicular to RS←→. She places her compass on point P to construct an arc. What must be true about the width of the compass opening when Mayumi draws the arc?
A. It must be equal to PS .
B. It must be greater than 12RS.
C. It must be wide enough so that the arc intersects RS←→ in two points.
D. It must be equal to PR .
Answer:
Width of the compass should be more than the smallest space between P and RS, so that it cuts RS at two distinct points. Therefore, it must be wide enough so that the arc intersects RS←→ in two points. The photo is attached so that you can understand it more.
Which expression is equivalent to square root of 9x^2?
A jar can hold 3/4 of a pound of flour. Austin empties 1/2 of a pound of flour into the jar. What fraction of the jar is filled? Enter your answer in numerical form.
Answer: 1/2 or one-half
Step-by-step explanation:
Compute the requested average. Tim Worker receives the following income monthly from a second job. Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. $200 $150 $250 $260 $285 $380 $200 $225 $200 $250 $220 $150 In dollars and cents the average pay will be?
Determine which equations below, when combined with the equation 3x-4y=2, will form a system with no solutions. Choose all that apply.
A) 2y = 1.5x - 2
B) 2y = 1.5x - 1
C) 3x + 4y = 2
D) -4y + 3x = -2
Answer: D,B,B,C,D,A,C,B,D, (A-D)
ALL TEST ANSWERS
Step-by-step explanation:
Write the fraction 29 over 7 as a repeating decimal
It is a week before the maths festival. A maths exhibitor costs £75.40 and so far 12 have been bought.
Please help me. Thank you.