Answer:
Step-by-step explanation:
A) multiplied by 12
B) Add 5
C) Minus 3
D) Divide by 5
A coin has heads on one side and tails on the other. The coin is tossed 50 times and lands
heads up 19 times. How does this frequency compare to the expected frequency based on
the probability of the coin landing with heads up?
Answer: A “The Frequency is 31 lower than expected.”
Step-by-step explanation:
The frequency is 12 fewer than expected.
What is relative frequency?Relative frequency or experimental probability is calculated from the number of times an event happens, divided by the total number of trials in an actual experiment.
The experimental relative frequency at which the coin lands heads up is [tex]\frac{19}{50}[/tex] or 0.38.
If the coin were a fair one, we would expect that it had heads up 25 out of 50 times, which would be a relative frequency of 0.50.
Since this is not happening, we conclude that the coin is NOT a fair one.
Expected frequency = 0.50
Experimental relative frequency = 0.38
= 0.50 - 0.38
= 0.12 or 12 %
Hence, the frequency is 12 fewer than expected.
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what expression is equivalent to −24x+72?
Answer choices:
1. 24(x+72)
2. 24(x+3)
3. −24(x−72)
4. −24(x−3)
Step-by-step explanation:
the answer is 4. you factor the equation since 24.
Graph y+9=−3x. please help me
Well, first thing we need to do is put this in slope intercept form of y.
Subtract 9 from both sides to isolate "y".
y= -3x-9
Now we can graph the equation
Graph the point (0,-9) since it is the y-intercept.
To get the x intercept, isolate the "x" variable instead of "y".
y+9 = -3x
(Divide every number on both sides of the equation by -3 to isolate "x".)
y/-3 -3= x
now that this is in slope intercept form of x, plug in 0 for y to get the number for x when y is 0.
0/-3 -3 = x
-3 = x.
Graph (-3, 0). Connect this point to the point (0,-9) and you get have successfully graphed the equation y+9= -3x.
I hope this helped.
What is the scale factor of ABC to A DEF?
Answer:
6
Step-by-step explanation:
All sides of triangle EFD have x6 of BAC.
E.g.: BA = 2. ED = 2 x 6 = 12
step by step
-3(4v+1)+2v=57
Answer:
v= -5.8
Step-by-step explanation:
-12v+1+2v=57
-10v+1=57
-10v=58
v= -5.8
It costs $60 to buy 10 hamburgers. At this rate, how much would it cost to buy 12 hamburgers? (Use proportions to help you).
i need this answer asap!!
Answer:
72
Step-by-step explanation:
I divided.$60 by 10 and got $6 per every burger, then I multiplied $6 x 12 and got $72.
Find the measure of
Answer:
∠RST = 68°Step-by-step explanation:
When looking at the diagram, we can infer that angle RST is the sum of angles RSQ and QST.
Therefore, angle RST = 46 + 22 = 68
∠RST = 68°
If you have 5 dimes and one quarter and gave one of your dimes to your best friend, how much money do you have?
Answer:
65 Cents
Step-by-step explanation:
Lisa says the factors of 18 are 1, 2, 3, 6, and 9. Is Lisa correct?
A.
Yes, she is correct.
B.
No, Lisa forgot the factor 4.
C.
No, Lisa forgot the factor 8.
D.
No, Lisa forgot the factor 18.
Answer:
I think the Answer is ( B. No Lisa forgot the factor 4.)
Step-by-step explanation:
Solve for the variable. You may use the hangers to help you.
40 = 2f + 12
f
f
40
12
Answer:
i don't know what the hangers are for but the calculation is given below
Step-by-step explanation:
40 = 2f + 12
40 - 12 = 2f
28 = 2f
28/2 = f
14 = f
therefore f = 14
show that each quadrilateral with the given vertices is a parallelogram.
N(5,1), P(2,7), Q(6,9), R(9,3)
9514 1404 393
Explanation:
The quadrilateral is a parallelogram if the midpoints of its diagonals are the same point. That is, if ...
(N +Q)/2 = (P +R)/2
Multiplying by 2, we can simplify the test to ...
N +Q = P +R
(5, 1) +(6, 9) = (2, 7) +(9, 3)
(5+6, 1+9) = (2+9, 7+3)
(11, 10) = (11, 10) . . . . . . . true ∴ NPQR is a parallelogram
A store sold 38 books in 2 hours
At this rare, how many books will
it sell in 7 hours?
Answer:
133 Books Sold in 7 hours.
Step-by-step explanation:
38 devied by 2 is 19.
Multiply 19 by 7.
19x7= 133.
On the grid, draw the graph of
y = 2x - 3
for values of x from -2 to 4
Q
Answer:
Plot these points:(-2,-7) (-1,-5) (0,-3) (1,-1) (2,1) (3,3) (4,5)
Step-by-step explanation:
You need to substitute your x values into the x of the equation y=2(3)-3 to find the y value...
The standard equation of a line is expressed as y = mx + b
m is the slope
b is the y-intercept
Given the equation y = 2x - 2
If x = -2
y = 2(-2) - 2
y = -4-2
y = -6
If x = 4
y = 2(4) - 2
y = 8-2
y = 6
This shows that the point (-2, -6) and (4, 6 )must be on the line graph. FInd the graph attached below.
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2,4,6,8...
What is the 32nd term of this sequence?
Answer:
omg im dum i said all the numbers up to 64 i could have just multiplied its 64 xD
Step-by-step explanation:
Answer:
64
Step-by-step explanation:
2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64
Just keep on adding two 32 times
The photo below is being enlarged to form a 24- by 30-inch print. What is the scale factor being used to enlarge it? 5 ia
Answer: 6
Step-by-step explanation:
The the scale factor being used to enlarge the photo is 6. Therefore, option B is the correct answer.
What is scale factor?A scale factor is defined as the ratio between the scale of a given original object and a new object, which is its representation but of a different size (bigger or smaller).
The basic formula to find the scale factor of a figure is expressed as,
Scale factor = Dimensions of the new shape ÷ Dimensions of the original shape.
Given that, the photo below is being enlarged to form a 24- by 30-inch print.
In the figure, the dimensions are 4 inches and 5 inches.
Scale factor = 24/4 = 6
and 30/5 = 6
Therefore, option B is the correct answer.
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Find the missing lengths. Leave answer in simplest radical form.
online sales result in 35% of sales being returned to their local brick-and-mortar store. what is 35% of 2,000 purchases?
a. 70
b. 240
c. 350
d. 700
Answer:
b
Step-by-step explanation:
b
Answer:
D) 700
Step-by-step explanation:
I used a calculator so sorry if I can't give a explanation
What is the range of the graph?
Answer:
y ≥ -1
Step-by-step explanation:
range consists of all y-values contained in the solution set
the lowest y-value (as seen by the graph) is negative 1
Determine the domain of the following graph:
Answer:
Domain: (-7, 4]
General Formulas and Concepts:
Algebra I
Domain is the set of x-values that can be inputted into function f(x)Step-by-step explanation:
According to the graph, the line's x-values span from -7 to 4. Since -7 is open dot, it is exclusive from the domain; since 4 is closed dot, it is inclusive in the domain:
Interval Notation: (-7, 4]
Inequality Notation: -7 < x ≤ 4
food delilah has 4 1/2 pies to divide equally among 9 people. how much would each person get
Answer:
4.5/9 = 0.5
half a pie each
Find the next three terms.
15,15/2,5,15/4,3
Answer:
15/6, 15/7, 15/8
Step-by-step explanation:
sequence is 15/1, 15/2, 15/3 (which is 5), 15/4, 15/5 (which is 3), 15/6, 15/7, 15/8
Scott and Cassie are selling pies for a school fundraiser. Customers can buy cherry pies
and apple pies. Scott sold 4 cherry pies and 6 apple pies for a total of $88. Cassie sold 8
cherry pies and 7 apple ples for a total of $126. What is the cost of each pie?
Cherry pies cost
and apple pies cost
Answer:
9.42857142857
Step-by-step explanation: Is a long decimal so you could just round it to 9.43
I REALLY NEED HELP!!!! Determine how far the intersection of Oak Street and New Street will be from the intersection of Main Street and New Street.
Answer:
2 = 3.5 0.=3.2
Step-by-step explanation:
hope it helps
4. What is of 2107what is 2 fifths of 210
Answer:
points I want ... use of this communication
Myra reads 8 pages of her book. If this is 25% of her book. How many pages does she have left to read?
A box in the shape of a cube has a side length of 1 1/2 feet. What is the volume of the box?
Answer:
Step-by-step explanation:
V cube=s^3, where is the side of the cube
1 1/2ft=3/2 ft
V=(3/2)^3=27/8 ft^3=3 3/8 ft^3
V=3.375 ft^3
I need help ASAP. I am terrible at math
Answer:
1.y=2/3x +9
2.y=-7x+(-3)
Step-by-step explanation:
A visual-effects model maker for a movie draws a spaceship using a ratio of 1 : 24. The drawing of the spaceship is 22 inches long. What is the length of the spaceship in the movie?
Group of answer choices
Answer:
Length of spaceship in movie = 528
Step-by-step explanation:
Given that:
Drawing ratio of spaceship = 1 : 24
It means that 1 inch on drawing equals 24 inches in movie
Drawing of spaceship = 22 inches
Length of spaceship in movie = x
As the relationship is proportional,
1 : 24 :: 22 : x
Product of mean = Product of extreme
24*22 = x
x = 528
Hence,
Length of spaceship in movie = 528
Salvador sold hats during a weekend sporting event. On Saturday, Salvador sold 47 of the total number of hats. On Sunday, he sold 14 of the total number of hats. What fraction of the total number of hats was left over?
Helpppppppppppppp pleaseeeeeeeee
First, lets put this into slope intercept form
3x + 2y = -6
2y = -3x - 6
y = -3/2x - 3
The y intercept is (0, -3)
To find the x intercept we set the new equation to zero and solve
0 = -3/2x - 3
+3 +3
(2)3 = -3/2x(2)
6 = -3x
6/-3 = -3x/-3
-2 = x
The x intercept is (-2,0)
Therefore, your intercepts are:
y-int. = (0,-3)
x-int. = (-2,0)
Hope this helps! =D