Answer:
False, all lines are not functions.
Step-by-step explanation:
Vertical lines are not functions since they do not pass the vertical line test. In this case, one x-coordinate relates to several y-coordinates.
Which of the following expressions is equal to -4x2-36 ?
Answer:
-4(2x+9) or its -8x-36
Which table of ordered pairs represents a proportional relationship?
Answer:
I think its the second one but I might not be right.
Step-by-step explanation:
A student is given an object and is asked to identify its density. The object has a
volume of 3 cubic centimeters and a mass of 6 grams. Using the formula in the diagram below, what is the density of the object given to the student?
Answer:
density= 2 g/cm3
Step-by-step explanation:
6 grams divided by 3 cubic centimeters
mass divided by volume
The Svensons find a refrigerator valued at $2,300 on sale for $1,900. They decided to withdraw $500 from savings to
use as a down payment on the purchase of the refrigerator and took out a loan to pay the balance. Choose the true
statement
a. The Svensons' assets increased by $1,400.
b. The Svensons'assets increased by $1,800.
C. The Svensons'assets increased by $1,900.
d. The Svensons'assets increased by $2,300.
Answer:
The Svensons' assets increased by $1,800.
Step-by-step explanation:
I just took the quiz!
Answer:
its b
Step-by-step explanation:
i took the test.
4/5 + 1/3
Answers should be in format example: 5/2 or 2/5. No decimals or mixed numbers.
Answer:
16/15
Step-by-step explanation:
The LCM of 5 and 3 is 15
4/5 + 1/3 = 12 / 15 + 4 / 15 = 16 / 15
Answer:1.13333333333 also known as 1.13 repeat
Step-by-step explanation:
Solve for y: -6x + 3y = 12
Answer:
x=y-4/2
Step-by-step explanation:
just use the app cymath it helps alot
3+0.5(4x + 8) = 9-2x
Answer:
1/2
Step-by-step explanation:
if you want me to explain it Just tell me and i will edit it
Answer:
X=0.5 or 1/2
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
The volume of a cube is 1000 in.3. How long is each side?
Each side of the cube is ___
in. long
Each side of the cube is 10 in long.
Step-by-step explanation:Hi there !
volume cube formula
V = s³
1000in³ = s³
(10in)³ = s³
s = 10 in
Good luck !
Answer:
Each side of cube is 10 in long
Step-by-step explanation:
Hello
Volume of cube formula,
V = L^3
1000 = L^3
(10)^3 = L
L = 10
Write an equation of a line that is perpendicular to y = 1/4x-4
that passes through the point(2.8)
Answer:
Step-by-step explanation:
perp. -4
y - 8 = -4(x - 2)
y - 8 = -4x + 8
y = -4x + 16
Need help with this?
Answer:
Measurements.
Step-by-step explanation:
Measurements are important because they help us in our every day lives such as cooking and baking, construction and many other things but measurements also help us find out our weight and height, or even what size shoe we have. So basically measurements are important in every part of our every day lives.
Hope it helps!
OwO
PLEASEEE HELPPP If quadrilateral C'D'EF represents quadrilateral CDEF rotated 90° clockwise about the origin, the ordered pair of D'is
THANK U
Answer:
Step-by-step explanation:
If D is rotated 90 degrees clockwise then it should wind up at (0,2). Try drawing the quadrilateral to see why this is true.
E' would be (0,3)
C' would be (5,1)
F' would be (-3,-3)
what is (2/3) squared equal
Answer:
[2/3]^2=[2/3]*[2/3]=[2*2]/[3*3]= 4/9
Answer:
(2/3)^2 equals 4/9
What is the equation of the line that passes through the point (-2, 7) and has a slope of zero?
O A. X = 7
O B. y = -2
O C. X = -2
O D. y = 7
Plsss answer asap
Answer:
The answer is option DStep-by-step explanation:
To find the equation of a line given the slope and a point we use the formula
[tex]y - y_{1} = m(x - x_{1})[/tex]where
m is the slope
( x1 , y1) is the point
From the question
slope = 0
The point is (- 2 , 7)
Substitute the values into the above formula and solve
That's
[tex]y - 7 = 0(x +2) \\ y - 7 = 0[/tex]We have the final answer as
[tex]y = 7[/tex]Hope this helps you
Use the given property of equality to complete the given statement. If a + 5 = b + 3 and a + 5 = 12, then b + 3 = ______________ (Transitive Property of Equality)
Answer:
b+3=9+3
a+5=12
a+5=b+3
12-3=9
You spend $168 on materials to start a business making silk flower arrangements. Each arrangement sells for $12. You decide to create a linear graph to model the relationship between profit, P, and sales, x. Which statements are true about the graph?
Answer:
B) The graph models P(x) = 12x − 168.
C) The x-axis represents the number of sales.
D) The break-even point for the number of sales and profit is (14, 0)
Step-by-step explanation:
Answer:
B) The graph models P(x) = 12x − 168.
C) The x-axis represents the number of sales.
D) The break-even point for the number of sales and profit is (14, 0)
Step-by-step explanation:
The x-axis represents the number of sales.
The graph models P(x) = 12x − 168
The break-even point for the number of sales and profit is (14, 0)
The x-axis represents independent values, such as the number of sales.
Profit = 12(#sales) − cost of materials → P(x) = 12x − 168
0 = 12x − 168 → x = 14 → (14, 0) is the break-even point.
The 16th percentile in a Normal distribution is 25 and 2.5% of the values in the distribution are greater than 40.
Which of the following are the best estimates for the mean and standard deviation of the distribution?
(a) mean = 32.5; standard deviation = 2.5
(b) mean = 32.5; standard deviation 5
(c) mean 32.5; standard deviation = 10
(d) mean = 30; standard deviation - 2.5
(e) mean = 30; standard deviations
This question is not complete
Complete Question
The 16th percentile in a Normal distribution is 25 and 2.5% of the values in the distribution are greater than 40.
Which of the following are the best estimates for the mean and standard deviation of the distribution?
(a) mean = 32.5; standard deviation = 2.5
(b) mean = 32.5; standard deviation = 5
(c) mean 32.5; standard deviation = 10
(d) mean = 30; standard deviation = 2.5
(e) mean = 30; standard deviations = 5
Answer:
(e) mean = 30; standard deviations = 5
Step-by-step explanation:
From the question, we are told that the 16th percentile in a Normal distribution is 25
Hence the standard deviation is calculated as √of the 16th percentile in a normal distribution
= √25
= 5
Hence, the standard deviation = 5
In other to obtain the mean, we used the formula of z score.
z score formula =(x-μ)/σ,
where x is the raw score
μ is the population mean
σ is the population standard deviation.
From the question
x = 40, σ = 5
We are told that 2.5 % of the values is greater than 40
This means The percentile for this values = 100 - 2.5 %
= 97.5%
The z-score for a 97.5th percentile = 1.96
Hence,
z = (x-μ)/σ
1.96 = (40 - μ) / 5
Cross Multiply
= 1.96 × 5 = 40 - μ
= 9.80 = 40 - μ
μ = 40 - 9.80
μ = 30.2
≈ 30
Hence, the Mean = 30
A normal distribution is symmetric about the mean.
The mean of the distribution is 30The standard deviation is 5Given
[tex]P_{16} = 25[/tex] ---- 16th percentile
First, we calculate the standard deviation as follows:
[tex]\sigma = \sqrt{P_{16}[/tex]
So, we have:
[tex]\sigma = \sqrt{25[/tex]
[tex]\sigma = 5[/tex]
Next, we have:
[tex]2.5\%[/tex] of the value are greater than 40
This means that:
[tex]x =40[/tex] and 97.5% are less.
So: the z-score of 97.5% is:
[tex]z = 1.960[/tex]
Using z formula:
[tex]z = \frac{x - \mu}{\sigma}[/tex]
Substitute values for z, x and [tex]\sigma[/tex]
So, we have:
[tex]1.960 = \frac{40 - \mu}{5}[/tex]
Multiply through by 5
[tex]5 \times 1.960 = 40 - \mu[/tex]
[tex]9.8 = 40 - \mu[/tex]
Collect like terms
[tex]\mu = 40 - 9.8[/tex]
[tex]\mu = 30.2[/tex]
Approximate
[tex]\mu = 30[/tex]
Hence, the mean is 30 and the standard deviation is 5
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1-6
For the problem below, display the data using a dot plot, bar graph, or two-way table. Decide
which type of data display is best and explain why.
Appliances sold at Housemart during the month of September:
Washers: 35 Dryers: 21 Ovens: 19 Refrigerators: 27
Dishwashers: 23
10 + 3x < 4 or 2x + 5 > 11 in interval notation
Answer:
( − ∞ , ∞ ) hope i help
Step-by-step explanation:
First, solve each inequality. I'll solve the first one first.
7 ≥ 2 x − 5
12 ≥ 2 x
6 ≥ x
Therefore, x could be any number less than or equal to 6. In interval notation, this looks like:
( − ∞ , 6 ]
The parenthesis means that the lower end is not a solution, but every number above it is. (In this case, the lower end is infinity, so a parenthesis must be used, since infinity is not a real number and so it cannot be a solution.) The bracket means that the upper end is a solution. In this case, it indicates that not only could
x
be any number less than 6, but it could also be 6.
Let's try the second example:
3 x − 2 4 > 4
3 x − 2 > 16 3 x > 18 x > 6
Therefore, x could be any number greater than 6, but x couldn't be 6, since that would make the two sides of the inequality equal. In interval notation, this looks like:
( 6 , ∞ )
The parentheses mean that neither end of this range is included in the solution set. In this case, it indicates that neither 6 nor infinity are solutions, but every number in between 6 and infinity is a solution (that is, every real number greater than 6 is a solution).
Now, the problem used the word "OR", meaning that either of these equations could be true. That means that either x is on the interval ( − ∞ , 6 ] or the interval ( 6 , ∞ )
. In other words, x
is either less than or equal to 6, or it is greater than 6. When you combine these two statements, it becomes clear that
x
could be any real number, since no matter what number
x
is, it will fall in one of these intervals. The interval "all real numbers" is written like this:
( − ∞ , ∞ )
If the points (–2, –1), (–1, 0), (2, 3), and (–3, –2) are joined to form a straight line, at what point does the line intersect the y-axis?
Answer:
0
Step-by-step explanation:
Pick 2 points and use the slope formula
(–1, 0), (2, 3)
Slope =(y2−y1)/(x2−x1)
(3−0)(2−−1)
3/3
1
y=1x
Hope this helps! Plz award Brainliest : )
Which answer explains whether the table of values represents a function? x y –4 –5 –2 2 0 3 1 –7 –6 –9 Yes, the values represent a function because each x-value is paired with only one y-value. Yes, the values represent a function because each y-value is paired with only one x-value. No, the values do not represent a function because the x-values are not in ascending order. No, the values do not represent a function because there is no single rule that relates each pair of values.
The answer is A,
In a function, an x value can only be paired with one y value.
However, a y value and have multiple different x values, for example when you graph a constant/horizontal line.
The given table represents a function as for every x, there is only one y.
This is best explained in the first option: Yes, the values represent a function because each x-value is paired with only one y-value.
What is a function?A function is a relation between a dependent and an independent variable, say y and x respectively, written as y = f(x). Any such relationship will be called a function if and only if, there is only one value of y corresponding to every x.
How to solve the question?In the question, we are asked about the values in the table:
x y
-4 -5
-2 2
0 3
1 -7
-6 -9,
whether these values represent a function or not.
We know that for a relationship to be a function, there should be only one value of the dependent variable (y) for every independent variable (x).
This is true for the given values as for every x value, we only have one y value.
Thus, we can say that the values represent a function because each x-value is paired with only one y-value. Hence, the first option is the right choice.
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Find the mDEC, If mBAC = 50° and mCBA = 70°.
50°
70°
60°
80°
???????????????????????????????
Answer: Its B
Step-by-step explanation:
How to solve this problem
Answer: [tex]\sqrt100=10[/tex]
Step-by-step explanation:
[tex]\sqrt[n](-4-4)^{2} +(-3-3)^{2} \\\sqrt64+36\\\sqrt100\\=10[/tex]
What is 1624 divided by 987
Answer:
1.64539007092
Step-by-step explanation:
You can use long division but with this type of problem, calculators you best bet.
Hope this helps! Plz award Brainliest : )
Use the graph of a quadratic function to find the following:
a. Vertex
B. Axis of symmetry
C. Y-intercept
D. X-intercept
E. Domain and range
Don’t mind my answers
Answer:
a: (2, 8) it's where the loop is
b: x = 2 its where the U would fold over itself
c: (0,0)
d: (0,0) , (4, 0)
e:
domain- (negative infinity, infinity)
range- (negative infinity, 8)
the answers that you did that i can see are right! don't be embarrassed to not be sure of your answers.
a torch battery produces electricity from – energy
Answer:
chemical energy to produce light energy
Factor: 15x2+23x-14.
Which of the following is one of the factors?
(15x-7)
(x-2)
(5x+2)
(5x-7)
(3x-7)
(5x-14)
pls hurry!!!
Answer:
15x-7
Step-by-step explanation:
[tex]15x {}^{2} + 23x - 14 [/tex]
[tex](15x - 7)(x + 2)[/tex]
6)
Do these calculations and use proper significant figures:
26 X 0.02584 =
15.3 +1.1 =
782.45 X 3.5 =
63.258 + 734.2 =
Answer:
0.67184
16.4
2738.575
847.458
Answer:
0.67184
16.4
2738.575
797.458
What is m∠PTR? a. 12 b. 40 c. 50 d. 140
Answer:
d. 140
Step-by-step explanation:
QTR is a 180 degree angle, so we can assume PTR is 140 degrees because (x+28) is (12+28)= 40
The required m∠PTR is 140°.
It is required to find the m∠PTR.
What is angle?In Plane Geometry, a figure which is formed by two rays or lines that shares a common endpoint is called an angle and corner whether constituting a projecting part or a partially enclosed space.
Given:
We have to find the value of x.
According to given question we have.
m<PTQ = (x + 28)°
m<RTS = (2x + 16)°
m<PTQ = m<RTS (vertical opposite angles are congruent)
Therefore:
x + 28 = 2x + 16
Solve for x. Combine like terms
28 - 16 = 2x - x
12 = x
x = 12
Find m<PTQ
m<PTQ = (x + 28)
plug in the value of x
m<PTQ = 12 + 28 = 40°
m<PTR + m<PTQ = 180° (supplementary angles)
m<PTR + 40° = 180° (substitution)
m<PTR = 180 - 40 (subtracting 40 from each side)
m<PTR = 140°
Therefore, the required m∠PTR is 140°.
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hi does anyone know the answer to this??
Answer:
3 x 3 and there is a negative so 3^2 is 3 x 3 and the number outside the parenthsese is negative so ye
Step-by-step explanation:
