URGENT WORTH 20 POINTS
What is the best equation for the line of best fit for the data set?
yˆ=−3x+15
yˆ=−13x+15
yˆ=−3x+2
yˆ=−13x+2
Answers
In the options given, the slope is either -3 or -13. If we imagine a line through the plotted points, the rise would be about 15 while the run would be about 5. This means the slope is about -3.
The best answer is y = -3x + 15
Related Questions
verify the identity sec(theta)sin(theta)cot(theta) = 1
Answers
sine = opposite / hypotenuse
cotangent = adjacent / opposite
So, if we multiply all three we have a numerator of
hypotenuse * opposite * adjacent and a denominator of
adjacent * hypotenuse * opposite
Notice that "hypotenuse", "opposite", and "adjacent" appear exactly once in the numerator AND the denominator.
When numerator = denominator, then a fraction equals ONE.
mrs adrian bought 30 yards of dirt for her garden in her backyard. she hired 4 girls to spread the dirt if the girls divided the dirt up evenly, how many yards did each girl need to spread mrs adrians garden?
Answers
= 30 yards ÷ 4 girls
= 30/4
simplify by 2
= 15/2
convert to mixed number
= 7 1/2 yards per girl
ANSWER: Each girl needs to spread 7 1/2 yards.
Hope this helps! :)
1 girl = 30 ÷ 4 = 7.5 yards
Answer: Each girl needs to spread 7.5 yards of dirt.
if 20 students ride on your bus and two fifth of them pack there lunches how many of them didnt pack there lunch
Answers
12.
(If you need an explanation, comment below.)
Glad I Could Help, And Good Luck!
~AnonymousGiantsFan~
What expression can be used for estimating 868 divided by 28?
Pls help me
Thanks
Answers
870 / 30 = 29
So 868 / 28 is approximately 29.
What is the slope of line m?
A.2
B.-2
C.-1/2
D.1/2
Answers
Use the slope formula: [tex] \frac{x2-x1}{y2-y1} [/tex].
Plug the numbers in.
[tex] \frac{0-(-2)}{-4-0} [/tex] = -[tex] \frac{1}{2} [/tex]
C) -1/2
Hi there!
Step-by-step explanation:
Lesson: Exploring Slope/ and slope intercept formFirst, you use slope formula.
[tex]SLOPE=\frac{Y^2-Y^1}{X^2-X^1}=\frac{RISE}{RUN}[/tex]
[tex]\frac{(-4)-0=-4}{0-(-2)=0+2=2}=\frac{-4}{2}=\frac{-4/2}{2/2}=\frac{-2}{1}=-2[/tex]
Slope is -2
Answer is -2
*the answer must have a negative sign.*
I hope this helps you!
Thanks!
Have a nice day! :)
-Charlie
:D
Please solve both and tell me how!
Answers
To determine k, you need to throw x + 3 into the original function:
[tex]f(x)= x^{2} -2x-24[/tex]
So, [tex]f(x+3)[/tex] would be:
[tex]f(x+3)= (x+3)^{2} -2(x+3)-24[/tex]
Doing some FOILing/distributing, we get:
[tex]f(x+3)= (x^{2}+6x+9) -2x-6-24[/tex]
Doing some clean up/combining like terms, we get:
[tex]f(x+3)= x^{2}+4x-21[/tex]
Now, it should be clear that k=4, since k is the coefficient in front of the x term (it's the "b" in [tex]ax^2+bx+c[/tex]).
PART B:
There are several ways to find the zeros, but perhaps the easiest is to factor the result from Part A:
[tex]f(x+3)= x^{2}+4x-21=(x+7)(x-3)[/tex]
From those factors, we know that zeros occur at x = -7 and x = 3 (answers A and E).
By the way, you can check the logic of these zeros if you know about shifts/translations. [tex]f(x+3)[/tex] is a 3 unit left shift from the original function, which has zeros at x = -4 and x = 6. Well, x = -7 is 3 units to the left of x = -4. And x = 3 is 3 units to the left of x = 6. So everything seems to check out.
Help please Math Geometry
Answers
5.7+70
=???
Hope this helps
What is the axis of symmetry for
Y=5x^2+12x+2
Answers
The axis of symmetry is x = -6/5.
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END OF UNIT ASSESSMENT TEST QUESTION!!!!
The table shows the results of a random survey of children between the ages of 10 and 15 about their favorite food.
Pizza Hamburger Chicken fingers Hot dogs Mac and cheese
67 42 59 14 24
Based on these results, if 375 children are asked about their favorite food, how many children will prefer pizza?
Answers
find the slope of, m, of the line passing through points (-4,-3) and (0,-2)
Answers
where X2 is the x-coordinate of the second ordered pair and X1 is the x-coordinate of the first ordered pair. Same applies for Y2 and Y1.
Now we just plug in.
[tex] \frac{-2 - (-3)}{0 - (-4)} [/tex]
which equals
[tex] \frac{1}{4} [/tex] which is your slope.
the average car length is 200 inches. how many feet and inches is the average car
Answers
1) divide 200 by 12 which is roughly 16.6666 repeating
2) now we know that the average car length is at least 16 feet, but less than 17
3) What I do now, is I take 12 and multiply it by 16
12 x 16 = 192
4) 200-192 = 8
5) 16 feet and 8 inches is the answer
---------------- * ---------- = 16 2/3 feet = 16 ft 8 inches (answer)
1 12 in
what is the length of leg s of the triangle below?
Answers
a² + b² = c²
4² + s² = (√32)²
16 + s² = 32
s² = 16
s = 4
Use the above figure to answer the following questions. Show your work if possible
A. What is the intersection of plane P and plane R?
B. Name three points that are collinear
C. Name R in two more ways
D. Name four coplanar points
Answers
#2 is A & B & D (because they all touch)
#3 is Plane DFG & Plane GFA
#4 is A & B & D & F
Two angles are complementary. If one angle measures 32 degrees, what is the measure of the second angle?
Answers
Complementary angles = 90°
Supplementary angles = 180°
To calculate the measure of the second angle, subtract 32 from 90.
90 - 32 = 58
The measure of the second angle is 58°. :)
If one angle measures 32 degrees, the measure of the second angle can be found by subtracting 32 from 90. Therefore, the second angle is 58 degrees.
Explanation:Complementary angles are two angles whose sum is 90 degrees. So, if one angle measures 32 degrees, we can find the measure of the second angle by subtracting 32 from 90:
Second angle = 90 - 32
Second angle = 58 degrees
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A math club took a math test. Twelve of the members had an average score of 80. Eighteen of the members had an average score of 86. what is was the class average
Answers
18 x 86 = 1548
960 + 1548 = 2508
12 + 18 = 30
2508/30 = 83.6
The class average is 83.6
There were twelve people who had an average of 80. With this, you just have to believe they all received an 80%. The same with the score of 86.
12•80=960
18•86=1,548
Now add them together.
960+1,548=2,508
Now add the total students.
12+18=30
2,508/30
83.6
The class average is 83.6%
Antoine is wrapping a block of cheese that is 22 centimeters long by 6 centimeters high by 10 centimeters wide with plastic wrap. What is the surface area of the cheese box?
Answers
width = 10 cm
height = 6 cm
Surface area of a rectangular prism (cheese box) = 2B + PH
Word form ⇒ 2(Area of base) + (perimeter of base)(height)
Find the measurements needed for the formula.
Area of base = 22 × 10 = 220 cm²
Perimeter of base = 22 + 10 + 22 + 10 = 64 cm
Height = 22 cm
Plug these into the formula.
2(220) + (64)(22) = 1,848
The SA of the cheese box is 1,848 cm².
Jason and Kyle both choose a number from 1 to 10 at random. What is the probability that both numbers are odd?
Answers
what is the solution to 11/(2x+5) = 12/2x
Answers
11 * 2x = 2x+5 * 12
22x = 12(2x+5)
22x = 24x+60
-24x -24x
-2x = 60
Divide both sides by -2
X = -30
What is the attribute being measured?
A. Psi
B. Stress
C. glass rods
D. number of rods
Answers
Answer:
B. Stress
Step-by-step explanation:
Did the usa prept test :)
calculate length of x
Answers
x^2 = 576 - 90.25
x^2 = 485.75
x = √485.75
x = 22.04 cm
if triangle ABC is rotated 180 degrees about the origin, what are the coordinates of A?
Answers
Answer:
The coordinates of A is [tex](-x_1,-y_1)[/tex].
Step-by-step explanation:
We are given that a triangle ABC is rotated 180 degrees about the origin .
We have to find the coordinates of A.
Let vertices of triangle ABC [tex]A(x_1,y_1),B(x_2,y_2) ,C(x_3,y_3)[/tex]
When we rotate the about 180 degrees then the coordinates changes like as
[tex](x,y)\rightarrow (-x,-y)[/tex]
When we rotate triangle ABC about 180 degrees then its vertices Ais ([tex]x_1,y_1)[/tex] change into [tex](-x_1,-y_1)[/tex]
Hence, the coordinates of A is [tex](-x_1,-y_1)[/tex].
Final answer:
After rotating triangle ABC 180 degrees about the origin, the coordinates of point A, initially at the origin (0, 0), remain unchanged at (0, 0).
Explanation:
If triangle ABC is rotated 180 degrees about the origin, the coordinates of point A after the rotation can be determined by applying the rules of rotation in the Cartesian coordinate system. Since point A is at the origin, its initial coordinates are (0,0). A rotation of 180 degrees about the origin will essentially reflect a point over both the x-axis and y-axis, but the location of point A will remain unchanged because it is located at the center of rotation. Therefore, the rotated coordinates of point A will still be (0, 0).
A circular table has a diameter of 4ft.what is its approximate area?(use pi=3)
Answers
Area = pi r^2
r = d/2
r = 4/2
r = 2 feet
pi = 3
Area = 3 * 2 * 2 = 12 square feet <<<<<< Answer.
Somewhere in 1 Kings Ch 7, the Bible makes reference to pi being 3. It's a pretty good estimate considering the number system the Bible used.
Which choice represents the best rational approximation for *square root symbol* 3? A) 14/9 B) 15/13 C) 17/10 D) 6/5
Answers
A rational number is a number which is in the form [tex]\frac{p}{q} ,q \neq 0[/tex]
Now, the value of the number [tex]\sqrt 3 = 1.73[/tex]
Now let us evaluate each given rational number in decimal form.
[tex]\frac{14}{9} = 1.6\\ \\ \frac{15}{13} = 1.2\\ \\ \frac{17}{10} = 1.7\\ \\ \frac{6}{5} = 1.2[/tex]
Therefore, among these numbers, the best approximation is option c i.e. 17/10.
C is the correct option.
Answer:
C) [tex]\frac{17}{10}[/tex]
Step-by-step explanation:
[tex]1,732050808 ≈ \sqrt{3} \\ \\ 1,73 ≈ \sqrt{3}[/tex]
Therefore answer choice C) would be the best approximate answer to this:
* [tex]1\frac{7}{10} = 1,7[/tex]
I am joyous to assist you anytime.
A father is ten times as old as his daughter. In 5 years he will be just five times as old as she will be. How old are they now? HELP PLEASEEE
Answers
The given problem is an algebraic equation where the daughter's age is denoted as 'x' and the father's age as '10x'. An equation is formulated to solve for 'x' based on future ages. The solution to the problem is that the daughter is 5 years old, and the father is 50 years old.
Explanation:The problem asked is a classic example of algebra problem solving. We are told that a father is 'ten times as old as his daughter', and in five years, 'he will be just five times as old as she will be'. Let's denote the daughter's current age as 'x'. Therefore, the father's current age will be '10x'.
In five years, the daughter will be 'x+5' and the father will be '10x+5'. At this future moment, the father is 'five times as old as the daughter', so we can create the equation: 10x + 5 = 5(x + 5). Solving this equation leads to 'x=5'. So, the daughter is 5 years old and the father is 50 years old.
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The probability of Jaden making a free throw is 15%. Predict the number of free throws that he can expect to make if he attempts 40 free throws.
Answers
We have been given that the probability of Jaden making a free throw is 15%.
Now, we have to predict the number of free throws that he can expect to make if he attempts 40 free throws.
In order to find the total number of free throws, we will find 15% of 40.
Therefore, the number of free throws should be
[tex]15\% \text{ of }40\\ \\ =\frac{15\times 40}{100} \\ \\ =\frac{600}{100} \\ \\ =6[/tex]
Therefore, the number of free throws that he can expect to make if he attempts 40 free throws is 6.
The table shows the results of drawing letter tiles from a bag. What is the probability that the next title drawn will have the letter C on it?
Outcome. Number of times drawn
A. 12
B. 5
C. 18
D. 15
A) 1/18
B)6/25
C)9/25
D)18/25
Answers
number of times C has already been drawn: 18
probability of getting a C is 18/50 which reduces to 9/25
The answer is C
Just say answer, no need to explain. Thanks
Answers
f (x) = root (x)
We have the following information:
Reflections
To graph y = -f (x), reflect the graph of y = f (x) on the x-axis. (Vertical reflection)
f (x) = - root (x)
Vertical translations
Suppose that k> 0
To graph y = f (x) + k, move the graph of k units up.
f (x) = - root (x) +3
Answer:
f (x) = - root (x) +3
option C
Find the area of the figure
Answers
How to do this I’m lost
Answers
[tex]We\ have\ y^{-1}=\sqrt{9-x}\\\\D:\\9-x\geq0\to x\leq9\\\\x\in\left(-\infty;\ 9\right>[/tex]
given the function f(x)=2x^2-3x, calculate f(a+h)-f(a)/h
Answers
[tex] \dfrac{ f(a+h)-f(a)}{h} [/tex]
[tex]= \dfrac{2(a + h)^2 - 3(a + h) - (2a^2 - 3a)}{h} [/tex]
[tex]= \dfrac{2(a^2 + 2ah + h^2) - 3a - 3h - 2a^2 + 3a}{h}}[/tex]
[tex]= \dfrac{2a^2 + 4ah + 2h^2 - 3a - 3h - 2a^2 + 3a}{h}}[/tex]
[tex]= \dfrac{4ah + 2h^2 - 3h}{h}}[/tex]
[tex]= \dfrac{h(4a + 2h - 3)}{h}}[/tex]
[tex]= 4a + 2h - 3[/tex]