The number of scores between 19.5 and 49.5 using the cumulative frequency is 16.
What is the cumulative frequency?The cumulative frequency is the running total of frequencies over some class intervals.
The frequency refers to the number of elements in the set or class.
Therefore, the cumulative frequency is the sum of all previous frequencies up to the required point.
Data and Calculations:Scores on a Test
Class Frequency Cumulative Frequency
20–29 9 9 (0 + 9)
30–39 4 13 (9 + 4)
40–49 3 16 (13 + 3)
50–59 2 18 (16 + 2)
60–69 10 28 (18 + 10)
Thus, the number of scores between 19.5 and 49.5 using the cumulative frequency is 16.
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............help ?????????????
Step-by-step explanation:
Solution.x+40°+35°=180°(straight line)x+75°=180°x=180°-75°x=105hope it helps!!
Answer:
x = 75°
Step-by-step explanation:
∠ p = 40° [alternate interior angles]
∠ q = 35° [alternate interior angles]
x = ∠ p + ∠ q
x = 40° + 35°
x = 75°
Here are the shopping times (in minutes) of ten shoppers at a local grocery store.
Complete the grouped frequency distribution for the data.
In the distribution, the frequency of a class is the number of shopping times in that class.
(Note that we are using a class width of 5 .)
The frequency which is to filled in the table is 3,1,2,4.
Given shopping time of ten shopkeeper: 36,20,32,18,20,33,28,34,37,23.
We have to complete the frequency in the table. Frequency of something is the number of times that number is coming.
Shopping time is given as 36,20,32,18,20,33,28,34,37,23.
Intervals for which frequency is given is 18 to 22, 23 to 27, 28 to 32, 33 to 37.
Numbers in the range 18 to 22=18,20,23 therefore 3
Numbers in the range 23 to 27=23 therefore 1
Numbers in the range 28 to 32=32 , 28 therefore 2
Numbers in the range 33 to 37=36, 33, 37, 34 therefore 4.
Hence the frequency which is to filled are 3,1,2,4.
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Two friends, Olivia and Melanie, took summer jobs. The equation y=22.2xy=22.2x represents Melanie's earnings in dollars and cents, yy, for working xx hours. Olivia earned $1156 in 40 hours. How much less per hour does Melanie earn than Olivia?
Answer:
$6.70 per hour
Step-by-step explanation:
We want to compare the pay for 1 hour's work.
Melanie's payThe equation tells us that her pay for working 1 hour can be found from the equation using x=1.
y = 22.2x
y = 22.2×1 = 22.2 . . . . pay for 1 hour
Melanie earns $22.20 per hour.
Olivia's payWe assume that Olivia's pay is proportional to hours worked, so pay for 40 hours will be 40 times 1 hour's pay.
pay per hour = $1156/(40 h) = $28.90/h
Olivia earns $28.90 per hour.
Pay differenceThe difference in their rates of pay is ...
$28.90 -22.20 = $6.70
Melanie earns $6.70 less per hour than Olivia.
Choose the lowest common denominator.
03 04 05 06 08 010 012
Find the sum:
Alw
The sum is
and
colch
The expression written in equivalent form with a
common denominator is
Done
1) 8
2) [tex]-\frac{3}{4}=-\frac{6}{8}[/tex], so it is equal to [tex]-\frac{6}{8}+\frac{5}{8}[/tex]
3) 1/8
Work out the surface area of the triangular prism below. Give your answer in cm cm². 17 cm 14 cm 15 cm 8 cm
Answer:
Step-by-step explanation:
A= 2AB+(a+b+c)h
AB= s (s﹣a) ( s﹣b) (s﹣c)
s = a+b+c
2
Solving for A
A= ah +bh+ch+1
2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=17·8+14·8+15·8+1
2·﹣174+2·(17·14)2+2·(17·15)2﹣144+2·(14·15)2﹣154≈ 567.35897
The graph is of a function in the form p(t) = a*b^t. What is the function?
Answer:
p(t) = 5*2^t
Step-by-step explanation:
We can solve for 'a' and 'b' using the point coordinates shown on the graph.
SetupSubstituting for (t, p(t)), the two equations we can make from the given points are ...
p(t) = a*b^t
5 = a*b^0 . . . . . . . (t, p(t)) = (0, 5)
10 = a*b^1 . . . . . . . (t, p(t)) = (1, 10)
SolutionThe first equation tells you ...
5 = a
The second equation tells you ...
10 = 5*b
2 = b
EquationThe function is ...
p(t) = a*b^t
p(t) = 5*2^t
324 divided into 6.846
324 divided into 6.846 is 47.33
How to evaluate the division?The statement is given as:
324 divided into 6.846
This is represented as:
324/6.846
Using a calculator, we have:
47.3269062226
Approximate
47.33
Hence, 324 divided into 6.846 is 47.33
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9029
2066
10
4
-6-54-3-2-12- 2 3 4 5 6 x
-f(x)
-6
-8
-10
-12+
how long would it take to drive 18 miles while going 18 mph
Answer:
1 hour
Step-by-step explanation:
18 miles because if u go 18 miles per hour it takes a hour
Given the function defined by g(x)=x²+4x-3, find g (s).
Answer:
[tex]g(s)=s^{2} +4s-3[/tex]
Step-by-step explanation:
If we have a function f(x) and want to find f(a) , just substitute by x=a in the Equation of f(x) , the Result will be f(a)So for our Question , we have [tex]g(x)=x^{2} +4x-3[/tex]
and we want to find g(s) , so just substitute by x = s in the Equation of g(x)
[tex]g(s)=s^{2} +4s-3[/tex]
Use the spinner to identify the probability to the nearest hundredth of the pointer landing on a non-shaded area
ANSWERS QUCIK PLS AND THINK U
Answer:
50.3cm²
Step-by-step explanation:
Formula: The area of a circle is found by A = πr²
Given:
radius is 4cmπ = 3.142Plug in:
A = πr² → A = (3.142)(4)²
→ A = (3.142)(16)
→ A = 50.272
"1 decimal places", round up to 50.3
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how would i explain my students proportional reasoning
Answer:
proportional reasoning involved thinking about relationship and making comparisons of countries are values in the words of John went Diwali portion reasoning is difficulty find it is not something that you can or not to but is diploma over 3 reasoning
The coordinates of the points P, Q and R are given by (-2, 1), (1, 4) and (4, k) respectively. Find the value(s) of k if
(b) PQ=QR(clue:distance).
There are two values of k based on the assumption that PQ = QR and the definition of distance and the Pythagorean theorem, k₁ = 7 and k₂ = 1.
How to find the missing value of a coordinate
Herein we can find the value of the missing coordinate of point by the Pythagorean theorem, which is described below:
PQ = QR (1)
[tex](Q_{x}-P_{x})^{2} + (Q_{y}-P_{y})^{2} = (R_{x}-Q_{x})^{2} + (R_{y}-Q_{y})^{2}[/tex]
If we know that P(x, y) = (- 2, 1), Q(x, y) = (1, 4) and R(x, y) = (4, k), then the missing value of the point R is:
[1 - (- 2)]² + (4 - 1)² = (4 - 1)² + (k - 4)²
(k - 4)² = 9
k - 4 = ± 3
k = 4 ± 3
There are two values of k based on the assumption that PQ = QR and the definition of distance and the Pythagorean theorem, k₁ = 7 and k₂ = 1.
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3) Which letter has a perpendicular line segment?
A. Y
B. L
C. R
D. U
Answer: L
Step-by-step explanation:
The two segments that form L meet at a 90 degree angle.
Given that a bag of m&ms has 21 brown candies, 15 orange candies, 10 yellow candies, 14 red candies, and 5 green candies, find the probabilities
The probability of drawing brown candies , orange candies, yellow candies, red candies, green candies is 0.323 , 0.231 , 0.154 , 0.215 ,0.077
What is Probability ?Probability is the study of likeliness of an event to happen.
It is given that a bag of candies that have
21 brown candies
15 orange candies,
10 yellow candies,
14 red candies,
5 green candies,
probabilities of drawing each candy =?
Total Candies = 21 +15+10+14+5 = 65
Probability = No. of chances / Total outcomes
Probability of drawing Brown candies = P(B) = 21 /65 = 0.323
Probability of drawing Yellow candies = P(Y)= 10/65= 0.154
Probability of drawing Orange candies = P(O) = 15/65= 0.231
Probability of drawing Red candies =P( R) = 14/65= 0.215
Probability of drawing Green candies = P(G) = 5/65= 0.077
Therefore the probability of drawing brown candies , orange candies, yellow candies, red candies, green candies is 0.323 , 0.231 , 0.154 , 0.215 ,0.077.
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Find the missing value of the ordered triple that will make the solution to the equation x + 2y – 3z = 8 true.
7. (4, , 0)
8. ( , -2, -2)
9. (2, 3, )
10. (-3, -2, )
The missing value of the ordered triple for questions 7,8,9 and 10 will be y=2,x=6,z=0, and z=-5 respectively.
What is the equation?A mathematical statement consisting of an equal symbol between two algebraic expressions with the same value is known as an equation.
The given equation in the problem is;
7) (4, ,0)
Substitute the values in the equation;
⇒x+2y-3z = 8,
⇒4+2y-3(0) = 8
⇒2y=8-4
⇒2y=4,
⇒y=4/2
⇒y=2
8) (, -2, -2)
Substitute the values in the equation;
x+2(-2) -3(-2)= 8
x-4+6 =8
x= 8-6+4
x=8-6+4
x=6
9)(2, 3, )
Substitute the values in the equation;
⇒2+2(3)-3z = 8
⇒8-3z = 8
⇒-3z = 0
⇒z = 0/-3
⇒z= 0
10) (-3, -2, )
Substitute the values in the equation;
⇒-3+2(-2) -3z = 8
⇒-7 -3z = 8
⇒-3z = 15
⇒z = 15/-3
⇒z = -5
Hence, the missing value of the ordered triple for questions 7,8,9, and 10 will be y=2,x=6,z=0, and z=-5 respectively.
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Which functions have a maximum and are transformed to the left and down of the parent function, f(x)=x2? Check
all that apply.
p(x) = 14(x + 7)² + 1
g(x) = -5(x + 10)² - 1
s(x) = –(x − 1)? +0.5
g(x) = 2x² + 10x-35
t(x) = -2x² - 4x - 3
Using translation concepts, the functions that have a maximum and are transformed to the left and down of the parent function are given by:
g(x) = -5(x + 10)² - 1t(x) = -2x² - 4x - 3What is a translation?A translation is represented by a change in the function graph, according to operations such as multiplication or sum/subtraction in it's definition.
For the translations, we have that:
Shift left, hence x -> x + a, a > 0.Shift down, hence y -> y - a, a > 0.Having a maximum means that the leading coefficient is negative.The functions that respect these conditions are:
g(x) = -5(x + 10)² - 1t(x) = -2x² - 4x - 3 = -2(x² + 2x) - 3 = -2(x + 1)² - 1More can be learned about translation concepts at https://brainly.com/question/4521517
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Whats the correct answer answer asap for brainlist
Answer:
B
Step-by-step explanation:
Giving brainliest to first accurate answer
Answer:
x<3
Step-by-step explanation:
There isn't a question that I can see for the first image, and I cannot see the yellow part, so I am not 100% sure if this is an accurate answer to the question you were asking.
Evaluate the following expression.
(5x)^0
Hello,
Answer:
1
Step-by-step explanation:
(5x)⁰ = 1
Rule : a⁰ = 1
Answer:
1
Step-by-step explanation:
(5x)^0
Any base raised to the zero power is 1
a^0 = 1
5^0 =1
(5x)^0 =1
does 6(2x-6)=-7(-2x+4) have no solution or infinite solution
Answer:
It does not.
Step-by-step explanation:
[tex]6(2x - 6) = -7(-2x + 4); \\ 6 * 2x - 6 * 6 = -7 * (-2x) + (-7) * 4; \\ 12x - 36 = 14x - 28; \\ 14x - 12x = -36 + 28; \\ 2x = -8; \\ x = -4.[/tex]
[tex]\{-4\}[/tex] is our set of solutions. Answering your question, it does not.
X. y.
-1. 1/10
0. 1/2
1. 5/2
2. 25/2
3. 125/2
What is the rate of change of the function described in the table?
a. 12/5
b. 5
c. 25/2
d. 25
Answer: B
Step-by-step explanation:
Each time x increases by 1, y is multiplied by 5.
Define coefficiend, base and index of an algebraic term with an example
Step-by-step explanation:
a number used multiplier variable
example 6z menas 6 times z and z is a variable so sixes coefficient variable with no number have a question of one example X is a really 1x
At a restaurant levys total bill is 46 bucks, if he wants to tip 15 percent how much should he leave as a tip?
Which statements are true? Select three options.
You can use for reference ;)
Dante has scored 30, 18, and 28 points in his three basketball games so far. How many points does he need to score in his next game so that his average (mean) is 26 points per game
Answer:
He needs to score 28 points.
Step-by-step explanation:
[tex]1^{st}\,\,score: 30\,\,points;\\\\2^{nd}\,\,score: 18\,\,points;\\\\3^{rd}\,\,score: 28\,\,points;\\\\4^{th}\,\,score: \,\,?[/tex]
Let's calculate Dante's 4th score, given that the average is 26 points:
[tex]\frac{S1 + S2 + S3 + S4}{4} = 26\\\\\frac{30 + 18 + 28 + S4}{4} = 26\\\\76 + S4 = 104\\\\S4 = 28\,\,points.[/tex]
what mixed number is equivalent to the fraction 28/5
The mixed number equivalent to the fraction 28 / 5 is 5 3 / 5
What is mixed fraction?A fraction represented with its quotient and remainder is a mixed fraction.
Therefore, it is a combination of a whole number and a proper fraction.
Hence,
The fraction is in improper fraction, let's convert it to mixed fraction.
Therefore,
28 / 5 = 5 3 / 5
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They work-infested $18,000 into accounts, one yielding 4% interest and the other yielding 12%. If he received a total of $1,280 and interest at the end of the year, how much did he invest at 4%?
Answer:
$11,000
Step-by-step explanation:
Let amount invested for 12% yield be p . Amount for 4% yield is therefore (18000-p)
Interest for 12%: 12% of p=0.12p
Interest for 4%: 4% of (18000-p)=0.04(18000-p)=720-0.04p
Total interest:
=0.12p + (720-0.04p)
=0.12p-0.04p+720
=0.08p+720
But we already know the total interest is 1280
Therefore: 0.08p+720=1280
0.08p=1280-720
0.08p=560
p=560÷0.08
p=7000
Therefore at 4% the person invested:
(18000-p)
18000-7000
$11,000
What is the slope of a line parallel to the line with equation 2x−5y=9?
25
−25
−95
−52
Answer:
For this one the parallel slope is going to be 2/5
Step-by-step explanation: