Lucia surveyed the students in her class and made a dot plot of the results. What question could Lucia have asked?
Answers
Answer:
How many days do you exercise in a week?
Step-by-step explanation:
The topic is students' weekly exercise so the question has to be about that. also, there are up to 7 days worth of data and there a 7 days in a week. so she most likely asked the question, "How many days do you exercise in a week?".
Related Questions
ANYONE PLEASE HELP
# BRAINLIEST FOR HELP
1) In the quadratic equation, k represents a real number.
3x^2+2kx+2=0
Which value of k gives imaginary solutions to the equation? Select all the values that apply.
A. − 5
B. − 3
C. − 1
D. 2
E. 3
F. 4
2) 1/2 x+12=8+4( x+1)
Which could be a correct first step to solve the equation? Select all the steps that apply.
A. Distribute 4 to the quantity ( x+1).
B. Add − 8 to each side of the equation.
C. Distribute 12 to the quantity ( x+1).
D. Multiply each side of the equation by 2.
E. Subtract 12 from each side of the equation.
F. Add together the 8 and the 4 on the right side of the equation.
G. Multiply the left side of the equation by 2 to eliminate the fraction.
3) In the equation of f(x) shown, r and s are positive real numbers.
f(x)=x^2−2(r−s)x+(r−s)^2+(r+s)
Select the options from the drop-down menus to correctly rewrite f(x).
FILL IN: f(x)= ( ......... ......... )2 ..........
4) A city’s population, P, changes according to the function P( x )=50,000 ( 0.95 )^x. where x represents the number of years after the year 2000.
Select the options from the drop-down menus to complete an accurate description of the population.
The population of the city in the year 2000 was(...……..) . The population is (..............) by (..........)each year.
Answers
Answer:
1)
C. − 1
D. 2
2)
A. Distribute 4 to the quantity ( x+1).
B. Add − 8 to each side of the equation.
D. Multiply each side of the equation by 2
E. Subtract 12 from each side of the equation.
3)
[tex]f(x)=(r-x-s)^2+(r+s)[/tex]
4) The population of the city in the year 2000 was 50000. The population is decreases by 0.95 each year
Step-by-step explanation:
a) Given an equation:
ax² + bx + c = 0
The equation would have imaginary solutions if b² - 4ac is negative. That is:
b² - 4ac < 0
Given an equation: 3x²+2kx+2=0
a) If k = -5
a= 3, b = 2k = 2 × -5 = -10, c= 2
b² - 4ac = (-10)² - 4(3)(2) = 76 > 0
It would not produce imaginary solutions
b) If k = -3
a= 3, b = 2k = 2 × -3 = -6, c= 2
b² - 4ac = (-6)² - 4(3)(2) = 12 > 0
It would not produce imaginary solutions
c) If k = -1
a= 3, b = 2k = 2 × -1 = -2, c= 2
b² - 4ac = (-1)² - 4(3)(2) = -23 < 0
It would produce imaginary solutions
d) If k = 2
a= 3, b = 2k = 2 × 2 = 4, c= 2
b² - 4ac = (4)² - 4(3)(2) = -8 <0
It would produce imaginary solutions
e) If k = 3
a= 3, b = 2k = 2 × 3 = 6, c= 2
b² - 4ac = (6)² - 4(3)(2) = 12 > 0
It would not produce imaginary solutions
f) If k = -5
a= 3, b = 2k = 2 × 4 = 8, c= 2
b² - 4ac = (8)² - 4(3)(2) = 40 > 0
It would not produce imaginary solutions
2)
A. Distribute 4 to the quantity ( x+1). to get:
1/2 x+12=8+4x+4
B. Add − 8 to each side of the equation. to get:
1/2 x+4=4( x+1)
C. Distribute 12 to the quantity ( x+1). This is not correct
D. Multiply each side of the equation by 2. to get:
x + 24 = 16 + 8(x +1)
F. Add together the 8 and the 4 on the right side of the equation. This is not correct
G. Multiply the left side of the equation by 2 to eliminate the fraction. This is not correct
3)
[tex]f(x)=x^2-2(r-s)x+(r-s)^2+(r+s)\\f(x)=x^2-2rx+2sx+r^2+s^2-2rs+r+s\\f(x)=x^2+r^2+s^2-2rs-2rx+2sx+r+s=(r-x-s)^2+(r+s)\\f(x)=(r-x-s)^2+(r+s)[/tex]
4) P( x )=50,000 ( 0.95 )^x, where x represents the number of years after the year 2000
At the year 2000, x = 0 therefore
[tex]P(x)=50000(0.95)^x=50000(0.95)^0=50000[/tex]
Since 0.95 is less than 1, it represent a population decay. 0.95 is the common ratio
The population is decreases by 0.95 each year
y=x^{2} +2x-8 determine the axis of symmetry, the vertex point and find the roots by factoring
Answers
Answer:
x = -1 <--- axis of symmetry
(-1, -9) <-- vertex
2, -4 (or, in my old precalc class we wrote our roots as (2,0) and (-4,0)) <--- roots
Step-by-step explanation:
a) Axis of symmetry equation is defined as
[tex]-b/2a[/tex] = x (i memorized this)
Quadratic equation form:
[tex]ax^2+bx+c[/tex]
And our original equation:
[tex]x^2+2x-8[/tex]
So..
[tex]-2/2 = - 1[/tex]
So our axis of symmetry is at x = -1,
b) now vertex point can be found by plugging this value back into our original equation.
y = [tex](-1)^2+2(-1)-8[/tex]
y = 1 - 2 - 8
y = - 9
So our vertex is at (-1, -9)
c) Finally, lets factor
[tex]x^2+2x-8[/tex] = 0 (when finding the roots, set y = 0, because we are trying to find where we cross the x-axis)
[tex]x^2-2x+4x-8[/tex] = 0
[tex]x(x-2) + 4(x-2) = 0[/tex]
[tex](x-2)(x+4)=0[/tex]
x = 2; x = -4 <--- Roots
Solve: log4(7t + 2) = 2
Answers
Answer:
t= 0.2 I think.....
Step-by-step explanation:
Answer Is not C
please help
Answers
Answer:
B
Step-by-step explanation:
Well since it is arthimetic sequence we know the formula
We know d is difference between second term and first so it will be -5- (-12)= -5+12= 7
[tex]a_{n}= a _{1}+ d (n-1) \\a_{n}= -12+7(n-1)\\a_{n} = -12+7n-7\\a_{n}= 7n-19[/tex]
the domain of this is 1,2,3,4.......
range is -12,-5,2,9.......
Therefore answer is B.
Find the measure of angle 2... State what the relationship is between angle 2 and the 18 degree angle
Relationship: ________
Degree measure of angle 2: _______
Answers
Answer:
-The Relationship:
Both [tex]\angle 2[/tex] and the [tex]18\textdegree[/tex] angle are supplementary.
The measure of [tex]\angle 2[/tex]:
[tex]\angle 2 = 162\textdegree[/tex]
Step-by-step explanation:
-The relationship about both [tex]\angle 2[/tex] and the [tex]18\textdegree[/tex] angle, is that they are supplementary, which they both add up to [tex]180\textdegree[/tex].
-To find the measure of [tex]\angle 2[/tex], you need to subtract [tex]18[/tex] from [tex]180[/tex] to get the actual angle measurement of [tex]\angle 2[/tex]:
Finding the measure of [tex]\angle 2[/tex]:
[tex]180 - 18 = 162[/tex]
[tex]\angle 2 = 162\textdegree[/tex]
So, now you have the measure of [tex]\angle 2[/tex] .
Which is equivalent to 3sqrt8^1/4x
Answers
Answer:
12 √8 ×
Step-by-step explanation:
There is two many variables in that I believe you meant. What is equivalent to 3 square root 8^1/4x? =12 √8 × . Hopefully this helped you .
10/7=x/5 which of the following equation can be used to solve for the value of X?
Answers
Answer:
10*5 = 7x
Step-by-step explanation:
We can solve using cross products
10*5 = 7x
50 = 7x
divide each side by 7
50/7 =7x/7
50/7 =x
Solve the exponential equation: 3x = 27 Question 3 options: A) x = –3 B) x = 3 C) x = 4 D) x = 27
Answers
Answer:
x=3
Step-by-step explanation:
3^x = 27
Rewrite 27 as 3^3
3^x = 3^3
The bases are the same so the exponents are the same
x=3
Please help with this
Answers
Answer:
the answer is C since you want to reflex it on the y axis
which value of h makes 8+h/10=1 a true statement
Answers
Answer:
h=2
Step-by-step explanation:
8+h/10=1
multiply the 1 by 10
8+h=10
subtract 8 from 10
h=2
If the statement is true, the value of h = 2.
What is a statement?
Mathematical statement - a statement of a mathematical relation math, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement equation - a mathematical statement that two expressions are equal.
What is true statement?
Students understand that an equation is a statement of equality between two expressions. When values are substituted for the variables in an equation, the equation is either true or false. Students find values to assign to the variables in equations that make the equations true statements.
Given,
(8+h)=10
given, the equation is true statement.
Therefore, 8+h = 10
h = 10 - 8
h = 2
To know more about true statement, visit:
https://brainly.com/question/17309546
#SPJ2
1/2 divided by -1/7 answers please?
Answers
Answer:
-[tex]\frac{7}{2}[/tex] or -3[tex]\frac{1}{2}[/tex]
Step-by-step explanation:
1/2 ÷ -1/7
1/2 × -7
-7/2
A 25
foot long board is cut into two parts. The longer part is one foot more than twice the shorter part. How long is each part?
Answers
Answer:
The length of one part is 8 feet and the longer part is 17 feet.
Step-by-step explanation:
While the longer part is 1 foot more than twice the shorter part which means that l2=2x+1 l 2 = 2 x + 1
hope this helps
Here is the question to the last post
Answers
Hi!
So the first thing to do is to combine the common terms on each side.
On the left side, 13 and 2a cannot be put together because 2 has a multiplier that 13 does not.
On the right side, however, there are two numbers with the multiplier a. Add those together!
3a + 2a = 5a.
13 + 2a = 5a - 14
Now we want to isolate a to one side. Let's do the right side.
To do this, we have to subract 2a from both sides to get a on only one side.
13 + 2a - 2a = 5a - 2a - 14.
Subract.
13 = 3a - 14.
We have to do the same for the 14 on the right side. Instead, since the number is being subracted from 3a, we have to add it to both sides.
13 + 14 = 3a + 14 - 14.
27 = 3a
a = 9.
Luis uses cubes to represent each term of a pattern based on a recursive function. The recursive function defined is f(n + 1) = f(n) + 4, where n is an integer and n ≥ 2. The number of cubes used in each of the first two figures is shown below. How many cubes does Luis use in the third, fourth, and fifth figures of the pattern? Fill in the blanks.
Answers
Answer:
It's 17, 21, and 25
Step-by-step explanation: hope it helps ^w^
If cos A=28/53 and sin B=60/61 what is the value of sin(A-B)
Answers
Answer:
0.358
Step-by-step explanation:
cos A=28/53 = 58.11
sin B=60/61 = 79.61
sin(79.11 - 58.11) = sin 21 = 0.358
HELP!! What is the exponential regression equation that fits these data?
Answers
Answer:
ITS A
Step-by-step explanation:
CUZ IM A GENUIS mark.
Answer:
A
Step-by-step explanation:
just did the T3ST rn :)
A customer is selected at random what is the probability that the customer is both male and bond
Answers
Answer:
1/20
Step-by-step explanation:
Take the # of blonde males and divide it by the total number of customers.
You get 5/100.
Now Simplify to get 1/20
A bald eagle moving with constant acceleration increases its speed from 5,000m / s to 12.00m / s over a distance of 200.0m. How long does it take you to do this?
a)4.849s
b)23.53s
c)28.95s
d)11.76s
Answers
Answer:
B
Step-by-step explanation:
Which linear function is represented by the graph?
Answers
Answer:
y[tex]\leq[/tex][tex]\frac{1}{3}[/tex]x-4; B
Step-by-step explanation:
The blue is in the y-values where it is more directed towards the negative y- values.
y=mx+b
[tex]\frac{1}{3}[/tex] slope= because rise is 1 and 3 runs and to find slope it is [tex]\frac{rise}{run}[/tex]
-4 is the "b" in y=mx+b where b represents the y-intercept and looking at the graph, the line intercepts at -4
Which best explains whether or not triangles RST and ACB are congruent?
The figures are congruent. ΔRST can be mapped to ΔACB by a reflection over the x-axis and a translation 2 units to the left.
The figures are congruent. ΔRST can be mapped to ΔACB by a reflection over the y-axis and a translation 2 units down.
The figures are not congruent. Point R corresponds to point A, but S corresponds to B and T corresponds to C.
The figures are not congruent. Point R does not correspond with point A.
Answers
Answer:
Correct option: first one
Step-by-step explanation:
If we reflect the triangle RST over the x-axis, the y-coordinate of each point will have the sign switched, so the point S would be in (1, -5), the point R would be in (1, -1) and the point T would be in (4, -1)
Then, if we translate the resulting points 2 units to the left, we would have:
S = (-1, -5) -> matches point C
R = (-1, -1) -> matches point A
T = (2, -1) -> matches point B
So the triangles are congruent, and we can map from triangle RST to triangle ACB with a reflection over the x-axis and a translation of 2 units to the left.
Correct option: first one
Which angles are right?
ND
dohet
А
M
Check all that apply.
A. KLJ
IN B. EFH
1 C. AGFE
D. ZMLK
Answers
Answer:
A, B and D
Step-by-step explanation:
Answer:
A , B , D
Step-by-step explanation:
You can clearly see that those angles have a square between them , thus they are right angkes
simplify this algebraic expression: y-3/3+12
Answers
Answer:
y-13
Step-by-step explanation:
y-3/3+12
because of order of ops you do 3/3 first
y-1+12
1+12 is 13 so
y-13
=(y-3)/15
3x-1 and 5x+2 find the area
Answers
Answer:
[tex] = 15 {x}^{2} + x - 2 \\ [/tex]
Step-by-step explanation:
[tex](3x - 1) \times (5x + 2) \\ 3x(5x + 2 ) - 1(5x + 2) \\ 15 {x}^{2} + 6x - 5x - 2 \\ = 15 {x}^{2} + x - 2[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
Given:
3x - 15x + 2To find out:
Find the area ?
Solution:
Area = ( 3x - 1 ) × ( 5x + 2 )
= 3x ( 5x + 2 ) - 1 ( 5x + 2 )
= 15x² + 6x - 5x - 2
= 15x² + x - 2
Thus, the area is 15x² + x - 2 .
Bryce started the summer with 4 hamster. by september he had 28 hamsters. what is the percent of change?
Answers
Answer:
14.285% or 14.3% if rounded to the nearest one decimal place.
Step-by-step explanation:
4 ÷28 × 100
Simplify 7N - 2N + 3P + 2P.
5N + 5P
10N + 10P
10NP
Answers
Answer:
5n+5p
Step-by-step explanation:
7n-2n+3p+2p
5n+5p (combine like terms)
the answer is 5n+5p
Please answer this !!!!!!
Answers
Answer:
This would be graph A
Step-by-step explanation:
The graph decreases means the line goes down. crosses at -7 means the y intercept is -7 and then remains constant means a horizontal line
This would be graph A
Answer:
Graph A ; Option B
Step-by-step explanation:
Consider the criteria for the graph;
[tex]Criteria;\\\\Crosses Y - axis at Point - ( 0, - 7 ),\\Decreases Before Crossing Y - axis,\\Remains Constant after Crossing Y - axis,\\[/tex]
Now take a look at each option before us;
[tex]Graph A - \\1. Travels Down,\\2. Crosses Y - axis at Point ( 0, - 7 )\\3. Remains Constant\\\\Graph B - \\1. Travels Upward,\\2. Crosses Y - axis at Point ( 0, 7 )\\3. Remains Constant\\\\Graph C - \\1. Travels Down,\\2. Crosses Y - axis at Point ( 0, - 7 )\\3. Travels Upward[/tex]
Comparing the three, we conclude that Graph A meets the provided criteria, which confirms that it is the right answer;
[tex]Solution ; Graph A[/tex]
PLS CAN SOMEONE HELP PLS WILL GIVE BRAINLIEST
THE FIRST TWO PICTURES ARE NUMBER ONE AND THE THIRD ONE IS FOR QUESTION 2
2. Use the diagram below to find x
Answers
Answer:
78 degrees
Step-by-step explanation:
x=108-30 PWP (Part Whole Postulate)
x=78 Solve
Answer:
See solution ( s ) below;
Step-by-step explanation:
1 . Consider the first attachment;
[tex]m< ( unknown ) = 30 degrees, - Given\\m< ( unknown ) = 108 degrees - Given,\\\\\\m< ( unknown ) + x = m< ( unknown ) - By Partition Postulate,\\30 + x = 108, - Through Algebra,\\Conclusion ; ( x = 78 degrees )[/tex]
Solution ; x = 78°
From a horizontal position, in reality we could only bed our knee to a maximum of a little less than 180 degrees. However, let's consider the max Randi can bend her leg as 180° ;
[tex]By Partition Postulate - 108 + x = 180,\\if x - degrees Randi Can Bend more,\\108 + x = 180,\\\\Conclusion ; ( x = 72 degrees )[/tex]
Solution ; Randi can bed her knee 72° further
3 . Consider 3x and 8x + 15 to be a linear pair,
[tex]3x + ( 8x + 15 ) = 180 - Linear Pair,\\\\3x + 8x + 15 = 180,\\11x + 15 = 180,\\11x = 165,\\Conclusion ; ( x = 15degrees)[/tex]
Solution ; x = 15°
I really need help with this please help best aswer gets brainliest
Answers
Answer:
Relative frequency is 7.41% or 0.0741
Step-by-step explanation:
Given
The Attached Table
Required
Calculate the relative frequency of the class with lower limit 27
Relative Frequency is calculated by dividing individual frequency by the total frequency
Mathematically,
[tex]Relative\ Frequency = \frac{Individual\ Frequency}{Total\ Frequency}[/tex]
The total frequency of the given data is 6+8+4+2+5+2
[tex]Total\ Frequency = 27[/tex]
The class with lower limit 27 has a frequency of 2;
Hence;
[tex]Relative\ Frequency = \frac{Individual\ Frequency}{Total\ Frequency}[/tex] becomes
[tex]Relative\ Frequency = \frac{2}{27}[/tex]
[tex]Relative\ Frequency = 0.07407407407[/tex]
[tex]Relative\ Frequency = 0.0741[/tex] (Approximated)
You may also leave your answer in percentage form
[tex]Relative\ Frequency = 0.0741 * 100\%[/tex]
[tex]Relative\ Frequency = 7.41 \%[/tex]
Hence, the relative frequency is 7.41% or 0.0741
Answer:
hi
Step-by-step explanation:
What is the value of A and B and if you can please show how you got that answer
Answers
Answer:
a = 4.5 units
b = 7.5 units
Step-by-step explanation:
By using mean proportional theorem in the ΔACB,
ΔACB ~ ΔADC ~ ΔCDB
[tex]\frac{AD}{CD}=\frac{CD}{DB}[/tex]
[tex]\frac{8}{6}=\frac{6}{a}[/tex]
a = [tex]\frac{6\times 6}{8}[/tex]
a = 4.5
[tex]\frac{AB}{CB}=\frac{CB}{DB}[/tex]
[tex]\frac{(a+8)}{b}=\frac{b}{a}[/tex]
Since a = 4.5
[tex]\frac{4.5+8}{b}=\frac{b}{4.5}[/tex]
b² = 4.5 × 12.5
b = √56.25
b = 7.5 units
Therefore, a = 4.5 units and b = 7.5 units will be the answer.
An irregular polygon has different side lengths and angle measures.
True
False