(A). |-9| + 7 =
(B). |-9 + 7| =
Answer:
A= 16
B= 2
Step-by-step explanation:
Answer:
A= 16
B= 2
That is the correct answer
Pls help with the last question C very urgent and explain the method please 20 POINTS
Answer:
2.432926829 rounded to a significant figure
Step-by-step explanation:
798/(8*41)
798/328=399/164=2 71/164 or approx 2.432926829
Round to a "significant figure."
(I don't know what that's referring to. The nearest whole number is 2.)
Identify the domain and range of the relation. Write your answers as lists of numbers.
((-4,-4), (1, 3), (0, 5), (3, 9)}
Answer:
The domain is -4,1,0,3
The range is -4, 3, 5, 9
Step-by-step explanation:
Domain is the x intercept
range is the y intercept
hope this helps!
Students spent 950 hours
researching public policies. They
spent 64% of this time talking to
members of Congress. How many
hours did the students spend talking
to members of Congress?
Answer:
608 hours
Step-by-step explanation:
64% as a decimal is 0.64.
950(0.64) = 608
2 prime numbers added together to get 30
Answer:
7 and 23 or 11 and 19
Step-by-step explanation:
First, let's determine the prime numbers between 1 and 30.
2, 3, 5, 7, 11, 13, 17, 19, 23, and 29 are all the prime numbers between 1 and 30.
We can now see that 7 and 23 add up to 30.
But 11 and 19 also works.
Hope this helped!!
The if 18and 12 subtracted from 50
Answer:
20
Step-by-step explanation:
18+12=30-50
bbbbbbtbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb bbbbbbtbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
For each function, find the inverse and the domain and range of the function and its inverse. Determine whether the inverse is a function.
f(x)=√x-5
If the inverse of f exists, it is represented by f⁻¹ and exists only if f is a bijective function.
The inverse of the function f(x)=√x-5 is x² + 5,
What is the inverse formula?The inverse function returns the original value for which the output of a function was given. When it comes to functions, f and g are inverse, with f(g(x)) = g(f(x)) = x. A function that is made up of its inverse returns the original value.
Considering f(x) = y, To find the inverse function, the x, and y values are switched giving the new equation of
x = √y - 5
Now we solve f(x),
x + 5 = √y
simplifying the above equation, we get
x² + 5 = y
The inverse function of f(x)=√x-5 is x² + 5
The domain of the function would be all x, such that
F(x) = √x + 5
The domain is {x∈R |x ≥ -5}
For f(x) to be defined, the term under the square root should be greater
than or equal to zero
x - 5 = 0
√x - 5 ≥ 0
The range of the function f(x)=√x-5 is [0,∞).
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Can someone help plss
Answer:
Yes
Step-by-step explanation:
Replace x with -7 and y with 1 in the original inequality and solve
1 < -7/2 + 9
1 < -3.5 +9
1 < 5.5 (Since this statement is true, the point (-7, 1) is a solution)
For each function, identify the transformation from the parent function y=b x . y=1/2 (9) x
Transformation of y= bx into [tex]y=\frac{1}{2} 9x[/tex] will take place by vertical dilation by a scale factor of [tex]\frac{9}{2}[/tex] .
A parent function is the simplest form of a particular family of functions. A family of functions is a group of functions that have the same highest degree and therefore the same graph shape. Function transformations "move" or "resize" or "mirror" the graph of the parent function. Mathematically speaking, the transformation of the function y = f(x) is usually y = a f(b(x + c)) + d. where a, b, c, and d are arbitrary real numbers representing transformations. Note that all outer numbers (outside the brackets) represent vertical translations, and all inner numbers represent horizontal translations. Addition and subtraction are translations, and multiplication and division are dilations. Every time a minus sign is multiplied it means it is a reflection here, 'a' stands for vertical stretch , 'b' stands for horizontal stretch , 'c' stands for horizontal movement , 'd' stands for vertical movementWe have given two function y=b x and [tex]y=\frac{1}{2} 9x[/tex] which means that first y changes into [tex]\frac{1}{2} 9x[/tex] i.e., vertical dilation by a scale factor of [tex]\frac{9}{2}[/tex] .
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Regular hexagon ABCDEF is inscribed in a circle with center H.
Regular hexagon ABCDEF is inscribed in a circle with center point H.
a. What is the image of segment BC after a 120-degree clockwise rotation about point H?
Answer:
Step-by-step explanation:
the image of BC reflecting over FC is DC.
Solve each equation by factoring. Check your answers.
9 x²+15 x+4=0
The factors of the equation are -1/3 and -4/3
Rewriting the equation -
9x² + 15x + 4 = 0
ax² + bx + c = 0
Factorizing the equation such that
sum of the factors should be equal to middle expression (15x in this question)product of the factors should equal to product of (a and c) (9 and 4 in this question)12 and 3 are suitable factors for solving the given expression -
9x² + 3x + 12x+ 4 = 0
Taking common factors -
3x(3x + 1) +4 (3x + 1) = 0
(3x + 1) (3x + 4) = 0
x = -1/3, -4/3
So, the two factors of expression are -1/3 and -4/3
Checking the answers by keeping each value of x in expression
When x = (-1/3)
9x² + 15x + 4 = 0
9(-1/3)² + 15(-1/3) + 4 = 0
1 -5 +4 = 0
5 - 5 = 0
0 = 0
When x = (-4/3)
9x² + 15x + 4 = 0
9(-4/3)² + 15(-4/3) + 4 = 0
16 - 20 +4 = 0
- 4 + 4 = 0
0 = 0
Since for both values of x, Left Hand Side of equation is equal to Right Hand Side of equation, the resultant factors are correct.
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PLEASE HELP!!!
18k-6<34-2k<10k+46
Does this table represent a function? Why or why not?
X=2,3,4,5,5
Y= 1,4,4,2,5
Let's arrange the pairs on the chart as follows:
(x, y) \s(2,1) \s(3,4) \s(3,3) \s(4,2) \s(5,5)
Two y-values are present at x=3 as indicated by the bold type. Therefore, this relationship does not pass the vertical line test (two points on the same vertical line). It's not a function, this.
There may be errors in the answer choices.
No, because there are multiple y-values that can be represented by a single x value.
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The table represents a quadratic function. Write an equation of the function in
standard form.
X- -3,-2,-1,0
f(x)-2,0,2,8
The equation y=2x² +8x +8 represents the quadratic function in standard form.
Quadratic Function
The Standard form for a quadratic equation is ax²+ bx + c=0, where: a, b and c are your respective coefficients. In the quadratic function, the coefficient "a" must be different than zero (a≠0) and the degree of the function must be equal to 2.
To solve a quadratic function, you should find the discriminant: D=b²-4ac and then use this variable in the formula: [tex]x=\frac{-b \± \sqrt{D} }{2a}[/tex] .
You should replace the given values for x and y in the standard form for a quadratic equation is ax²+bx+c=0. When you use x=0, you can find the coefficient c. See below.
y = ax²+ bx + c
8 = 2*0 + b*0 +c
8 = 0 + 0 + c
c =8
Next step, you should find the coefficients a and b from the two given points.
For x =-1 and y=2 and x= -2 and y=0, you will havey = ax²+ bx + c, for (-1,2)
2 = a -b +8
y = ax²+ bx + c, for (-2,0)
0 = 4a -2b +8
Then,
a - b= -8+2
4a - 2b = -8
Here you have a linear system
a - b= -6 (1)
4a-2b = -8 (2)
For solving the linear system, first, you should multiply equation 1 by (-2) and after that sum equations 1 and 2.
Thus,
-2a +2b = +12 (1)
4a - 2b = -8 (2)
The result from sum equations 1 and 2 is
-2a +4a=4
2a=4
a=2
From equation 1 : a-b= -6, if a=2 you have:
a-b= -6
2 - b = -6
-b = -6 -2
-b = -8
b=8
Now you have all data for writing the standard for a quadratic equation: a= 2, b=8 and c=8
y=ax²=bx+c
y=2x²+8x+8
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Can someone help me with this pls
Answer:
6
Step-by-step explanation:
Angles DBF and EBF form a linear pair, so:
[tex]5x+6+3x-2=180 \\ \\ 8x+4=180 \\ \\ 8x=176 \\ \\ x=22 \\ \\ \implies m\angle DBF=116^{\circ}[/tex]
Similarly, because angles DBF and DBC form a linear pair,
[tex]m\angle DBC=64^{\circ}[/tex]
Since angle DBE is a straight angle, angle ABE is 26 degrees.
[tex]4y+2=26 \\ \\ 4y=24 \\ \\ y=6[/tex]
need help to find equations that solve -1/2.
Three equations with a solution of -1/2 are given as follows:
5x + 3 = 7x + 4.6x + 4 = 8x + 5.7x + 5 = 9x + 6.What is a system of equations?A system of equations is when multiple variables are related, and equations are built to find the values of each variable, according to the relations given in the problem.
One example of a system of equations is when two equations are equaled, as is the case for this problem:
ax + b = cx + d.
We want solution of -1/2, hence:
x = -1/2
(a - c)x = d - b.
Thus:
a - c = -2. -> c = a + 2.d - b = 1. -> d = b + 1.Then three possible cases are given as follows:
a = 5, c = 7, b = 3, d = 4: 5x + 3 = 7x + 4.a = 6, c = 8, b = 4, d = 5: 6x + 4 = 8x + 5.a = 7, c = 9, b = 5, d = 6: 7x + 5 = 9x + 6.More can be learned about a system of equations at https://brainly.com/question/24342899
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Students at a high school were polled about their opinion of the food in the school cafeteria. A total of 200 students were chosen randomly from among the student body and asked to fill out a survey. Out of the 200 surveys received, one question had the following responses:
Food is acceptable as it is: 54
Food is terrible and should be improved: 103
Food is excellent and should not be changed: 15
Identify the problem with the study.
A. The relationship between two variables implies one causes the other.
B. Nonresponse
C. Some of the sample data are missing.
D. The conclusion is based on a voluntary response sample.
Based on the poll of the opinion of food by students at a high school, one problem with the study is that B. Nonresponse.
What is a problem with the study?In the question that was asked about how acceptable the food was, the total number of people who responded were:
= 54 + 103 + 15
= 172 responses
This means that the number of people who didn't respond were:
= 200 - 172
= 28 students
This is a problem of nonresponse as 28 students opted not to respond to the question which can affect research conclusions.
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DEBATE! WHO MAKES THE BEST SONGS?! (these are alt/metal/rock ones)(you can rank them)
Kim Dracula
Jazmin Bean
Melanie Martinez
Ashnikko
Skillet
carolesdaughter
Linken Park
Imagine Dragons
Slipknot
Evanescence
Fall Out Boy
My Chemical Romance
Green Day
Panic! At the disco
Paramore
21 pilots
Pierce The Veil
Arctic Monkeys
Factor the sums of two squares. SEE EXAMPLE 5
34. 4x² + 49
35. x² + 1
36.36 + 100a²
38.16² +25
37. 18y² +8
39. x² + y²
A factor is a number that divides another number, leaving no remainder. In other words, if multiplying two whole numbers gives us a product, then the numbers we are multiplying are factors of the product because they are divisible by the product.
factor of 4x² + 49 is (2x)^2+(7)^2
x² + 1 is x^2+(1)^2
36 + 100a² is (6)^2=(10a)^2
16² +25 is (4)^2+(5)^2
18y² +8 is([tex]\sqrt{18}[/tex] y)^2+([tex]\sqrt{8}[/tex])^2
x² + y² is (x)^2+(y)^2
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True or false, 0 is a solution to 2x + 10 = 4x + 10
grue
O False
Answer:
True
Step-by-step explanation:
You can either solve for x (which produces 0 as the result) or you can plug zero in for x into the original equation to verify that it produces a true statement.
Answer:
TRUEStep-by-step explanation:
True or false, 0 is a solution to
2x + 10 = 4x + 10
2x - 4x = 10 - 10
-2x = 0
x = 0/-2
x = 0
the equation is TRUE
HELP......................................
Answer:
The equation's result: 32,000 (Rounded)
Goal: Find the closest or equivalent result in another expression
Step-by-step explanation:
A)[tex](1.5^{15})/(0.7^{12})\\(1.5^{15})/(0.7^{12}) = (437.894)/(0.7^{12})\\437.894/(0.014)\\31636.79[/tex]
How we got to 31,636 was by dividing from left to right.
Remember: When dividing decimals, it's like multiplying whole numbers in a way. The number(the quotient, also) ends up bigger instead of being smaller like when dividing whole numbers. If you multiply decimals, they(the product) end up smaller.
Therefore, A is the correct answer.
Which angles are congruent to each other?
<3 and <1
<3 and <8
<5 and <4
<4 and <1
Answer:
<3 and <1
Step-by-step explanation:
they're vertical angle pairs
After 15 years, Salma will be four times as old as she is now.
Answer:
x+15 = 4x
3x = 15
x = 5
Therefore her present age is 5 years
Step-by-step explanation:
hope this helps! <3
Answer:
4
Step-by-step explanation:
Under his cell phone plan, Ian pays a flat cost of $44.50 per month and $5 per gigabyte. He wants to keep his bill at $61 per month. Which equation could be used to determine xx, the number of gigabytes of data Ian can use while staying within his budget?
Answer:
x<2.1
Step-by-step explanation:
5x<70-59.5
5x<10.5
X<10.5/5
X<2.1
The following data displays ages in which people started wearing braces. Use the data
below to answer questions 1-4:
14, 14, 15, 15, 16, 16, 16, 18, 19, 57
1. Calculate the following:
a. Mean
b. Median
c. Mode
2. What is the best measure of center for this data? Why?
3. Create a boxplot using the data.
4. Create a stem and leaf plot using the data.
Answer:
Step-by-step explanation:
how big is yo toes?
Select the locations on the number line to plot the points −6, −12, and −16.
Answer:
. . .
_________-16____-14____-12____-10____-8____-6____-4____-2____0
William has 24 cans of fruit and 60 cans of vegetables that he will be putting into bags for a food drive. He wants each bag to have the same number of cans of each type of food. He uses all the cans. Use the drop-down menus to complete the statements below about the number of bags of food William can make. CLEAR CHECK The greatest number of bags William can make is 12 . Each of these bags will have 2 cans of fruit and 5 cans of vegetables. If he made fewer bags, at least one type of food would not evenly divide . He could use bags, but this is not the greatest number he could use.
The highest number that can be placed in each bag is 12.
How to calculate the value?It should be noted that it was stated that William has 24 cans of fruit and 60 cans of vegetables that he will be putting into bags for a food drive.
In this case, he wants each bag to have the same number of cans of each type of food.
It should be noted that the information simony wants us to get the highest common factor for 24 and 60.
Factors of 24 = 1, 2, 3, 4, 6, 8, 12, 24
Factors of 60 = 1, 2, 3, 4, 5,6, 10 ,12, 15, 20, 30, 60
Therefore, the highest number that can be placed in each bag will be the highest common factor for 24 and 60 which is 12.
Therefore, the highest number that can be placed in each bag is 12.
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A coordinate plane. The x- and y-axes each scale by one. A graph of a line intersects the points zero, two and one, zero.
A coordinate plane. The x- and y-axes each scale by one. A graph of a line intersects the points zero, two and one, zero.
What is the slope of the line?
Answer:
-1
Step-by-step explanation:
I'm just good like that
Determine whether the variable is qualitative or quantitative. explain your reasoning. colors of automobiles
The colors of automobiles are qualitative variables.
Qualitative data deals with traits and qualities that are difficult to quantify but can be perceptually experienced, such as flavors, sensations, looks, and colors. In general, you create quantitative data when you measure something and assign it a numerical value.
A qualitative variable, often known as a categorical variable, classifies a quality of something to characterize it. A wonderful illustration of anything that may be categorized is the hues of the cars in a parking lot: red, green, blue, black, white, etc. As a result, this is a qualitative variable.
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Select all the equations that satisfy this fact.
Answer:
2) SA + AM = SM
3) SA = AM
What is a defined term?
A term is a single mathematical expression. It may be a single number (positive or negative), a single variable ( a letter ), several variables multiplied but never added or subtracted. Some terms contain variables with a number in front of them. The number in front of a term is called a coefficient.
What is a midpoint?
In geometry, the midpoint is the middle point of a line segment. It is equidistant from both endpoints, and it is the centroid both of the segment and of the endpoints. It bisects the segment.
Hope this helped :)