The possible outcomes must contain at least three tails, not 33 because a coin is flipped eight times. Then, the possible outcomes that contain at least three tails are 219.
The possible outcome is the possible result of an event. The possible outcomes that contain at least three tails mean the possible outcomes with exactly three tails and more than three. So, the calculation is:
[tex]\frac{8!}{3!5!} + \frac{8!}{4!4!} + \frac{8!}{5!3!} + \frac{8!}{6!2!} + \frac{8!}{7!1!} + \frac{8!}{8!0!}[/tex]56 + 70 + 56 + 28 + 8 + 1= 219Hence, the possible outcomes that contain at least three tails are 219.
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2. How would you explain why the equation √z= -7 does not have a solution?
Answer:
It does not have an answer because the square root of any number cannot be negative
Yes, the equation √z= -7 does not have a solution.
What is number?A number is a mathematical object used to count, measure, and label. The original examples are the natural numbers 1, 2, 3, 4, and so forth. Numbers can be represented in language with number words.
here, we have,
given that, the equation √z= -7
now, we know, that the equation √z= -7 does not have a solution.
because, we know,
It does not have an answer because the square root of any number cannot be negative.
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Write an equation of a line in slope-intercept form with the given slope and y-intercept.
slope: -2, y-intercept: 7
Answer: y=-2x+7
Step-by-step explanation:
we know that equation is y=mx+b
b=y intercept
x=the x coordinate
m=slope
y=y coordinate
then you can just fill it in from there . hope this helps
Find the values of x and y. Write your answers in simplest form. Please show how the work so I can see and learn how to get the answer.
According to the area of triangle, the value of x is 8.6 and the value of y is 10.5
Area of triangle:
The area of the triangle is defined as the region enclosed by its perimeter or the three sides of the triangle.
Given,
Here we have the triangle with side values and height.
Now, we have to find the value of x and y in the triangle.
We know the formula of the triangle is,
A = 1/2 b x h
Here the value of b is x + 9 and the value of h = 6
So, the area of the triangle is,
=> [(x + 9) x 6]/2
=> 2 = 6x + 54
=> 6x = 52
=> x = 52/6
=> 8.6
Now, the value of y is calculated by using the Pythagoras theorem,
=> y² = (8.6)² + 6²
=> y² = 73.96 + 36
=> y² = 109.96
=> y = √109.96
=> y = 10.5
Therefore, the value of y is 10.5
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Please help ASAP!! It's due tomorrow at 745am
Answer:
L = 22 W = 4
Step-by-step explanation:
It says that the length is 6 more than 4 times its width, this means
4W + 6 = L
Perimeter is 52, this means
2W + 2L = 52
and Area is 88, this means
W*L = 88
2W = 52 - 2L
W = 26 - L
4(26 - L) + 6 = L
104 - 4L + 6 = L
104 + 6 = L + 4L
110 = 5L
L = 22
W = 26 - 22
W = 4
Calculate a four-day moving average for the price of the stock for the end of day 7. Day 1 - 62. 00; day 2 - 56. 00; day 3 - 50. 00; day 4 - 60. 00; day 5 - 59. 00; day 6 - 55. 00; day 7 - 59. 00; day 8 - 63. 0.
The average for the price of the stock for the end of day 7 is 57.28
Given,
The stock of 8 days;
Day 1 - 62. 00
Day 2 - 56. 00
Day 3 - 50. 00
Day 4 - 60. 00
Day 5 - 59. 00
Day 6 - 55. 00
Day 7 - 59. 00
Day 8 - 63. 00
We have to find the average for the price of the stock for the end of day 7.
Here,
Average = Total sum / Number
Then,
Average = (day 1 + day 2 + day 3 + day 4 + day 5 + day 6 + day 7) / n
= (62 + 56 + 50 + 60 + 59 + 55 + 59) / 7
= 401/7
= 57.28
Therefore,
The average for the price of the stock for the end of day 7 is 57.28
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Parker went to the grocery store and bought bottles of soda and bottles of juice. Each bottle of soda has 50 grams of sugar and each bottle of juice has 10 grams of sugar. Parker purchased a total of 14 bottles of juice and soda which collectively contain 300 grams of sugar. Graphically solve a system of equations in order to determine the number of bottles of soda purchased,x, and the number of bottles of juice purchased, y.
The number of bottles of soda purchased are 4 and the number of bottles of juice purchased are 10.
Given,Parker went to the grocery store and bought bottles of soda and bottles of juice.
Each bottle of soda has 50 grams of sugar and each bottle of juice has 10 grams of sugar.
Parker purchased a total of 14 bottles of juice and soda which collectively contain 300 grams of sugar.
we are asked to determine the number of bottles of soda purchased,x, and the number of bottles of juice purchased, y.
So, the total number of bottles:x+y=14
x=14-y ...eq(1)
As, Each bottle of soda has 50 grams of sugar and each bottle of juice has 10 grams of sugar.
50x+10y=300
Substituting the value of x from eq(1)
⇒ 50(14-y) + 10y = 300
⇒ 700 - 50y + 10y = 300
⇒ -40y = 300 - 700
⇒ -40y =-400
y = 400/40
y = 10
The number of juice bottles = 10.
Now, to get the number of bottle of soda by substituting the value of y in equation (1):
x = 14-y
x = 14 - 10
x = 4
The number of soda bottles = 4.
Therefore, the number of bottles of soda purchased are 4 and the number of bottles of juice purchased are 10.
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help please
.............
Answer:
x ≈ 41.7 ° (a)
Step-by-step explanation:
b² = a² + c² - 2ac × cosβ
~~~~~~~~~~~
25² = 32² + 37² - 2(32)(37)cosx
625 = 2,393 - 2,368 cosx
cosx = [tex]\frac{-2393+625}{-2368}[/tex] ≈ 0.74662162
x ≈ 41.7 ° (a)
12x−x+8+3x= ______x + _______ Complete the equation so that it has infinitely many solutions.
Answer:
14x + 8 for the first column and the second one is i think its 2 (7x + 4)
Step-by-step explanation:
sorry if this is not what your looking for
Evaluate: 3y - 5/4x=
when y = 2 and x = 4
Answer:
1
Step-by-step explanation:
3(2)-5/4(4)
6-20/4
6-5
1
The straight line L passes through the points (4, -1) and (6, 4)
The straight line M is perpendicular to L and intersects the y-axis at the point (0, 8)
Find the coordinates of the point where M intersects the x-axis.
Answer:
Step-by-step explanation:
gradient of L:
4-(-1)/6-4
=5/2
Gradient of m=perpendicular gradient=m1xm2= -1
5/2m2=-1
5m2=-2
m2= 2/5
y intercept given=8
equation:
y= -2/5x+8
y will be0 when line crosses x-axis
input y as 0
0= -2/5x+8
2/5x=8
2=40x
x= 20
coordinate=(-20,0)
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Josh spends of his savings to buy 48 4 5 shares in a cech company. He has $18 left. Part A: How much does each share of the tech company cost? Show your work. Part B: How many more shares can Josh buy with the remainder of his savings? Explain.
Each share of the tech company cost is $1 and 18 more shares can Josh buy with the remainder of his savings.
Given:
Josh spends of his savings to buy 48 4/5 shares in a cech company. He has $18 left.
Let x be the total savings
4/5 x = 48
x = 48*5/4
= 240/4
= $60
= 4/5*60
= 240/5
= $48.
Part A:
The cost of each share of the tech company = 48/48
= $1
Part B :
He has 18 so he can buy =18*1
= 18 shares .
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Write an expression that represents the total owed for 6 months of cable at a price of c dollars for each month, plus a one-time equipment fee of $50?
6(c) + 50
6(c + 50)
2(50) + c
50c + 6
PLEASEEEE HELP!!!
Directions: write the equation of the graph in slope-intercept form
Answer:
Step-by-step explanation:
y = mx+b, where m is the slope and b is the y-intercept (the point where the line crosses the y-axis)
try this it works
Plumbing: If a 45 gallon hot water tank holds 360 lbs of water, what weight of water will a 55 gallon tank hold?
Weight of water will a 55 gallon tank hold 440 lbs.
How to find the weight of water will a 55 gallon tank hold ?If a 45 gallon hot water tank holds 360 lbs.
45 gal⇒ 360 lb
55 gal ⇒ x lb?
Ratio
45 : 360 = 55 : x
Ratios are used to compare two numbers by dividing them. If you want to compare one data point (A) to another (B), your formula would be A/B. This signifies that you are dividing data A by data B. If A is five and B is ten, your ratio will be 5/10.
Here,
do the relation
[tex]\frac{45}{360} = \frac{55}{x}[/tex]
solve the x
[tex]x = \frac{55 * 360}{45} \\ = 440[/tex]
Hence weight of water will a 55 gallon tank hold 440 lbs.
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I NEED A ANSWER RN PLS!!
A cylindrical jar has a radius of 6 inches and a height of 10inches. The jar is filled with marbles that have a volume of 20 in3. Use 3.14 for pi. Show work. Complete sentences.
a. What is the volume of the jar?
b. How many whole marbles can fit in the jar? *Each marble has the volume of 20 cubic inches
The volume of the jar is 1130.4 cubic inches and the number of marbles that can fit is 56.
What is a cylinder?In geometry, it is defined as a three-dimensional shape having two circular shapes at a distance called the height of the cylinder.
We know the volume of the cylinder is given by:
[tex]\rm V = \pi r^2 h[/tex]
It is given that:
A cylindrical jar has a radius of 6 inches and a height of 10inches.
The volume:
V = π(6)²(10)
V = (3.14)(6)²(10)
V = 1130.4 cubic inches
Number of marbles = 1130.4/20 = 56.52 = 56 marbles
Thus, the volume of the jar is 1130.4 cubic inches and the number of marbles that can fit is 56.
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expand by using the distributive property: (y^2 - 3y^3 x^-1) 2m^0 y^-2
The expanding the expression y^2 - 3y^3 x^-1) 2m^0 y^-2 using distributive property is 2y² + 1 - 6y³ + 2x⁻¹ + x⁻¹y⁻²
We need to expand the expression (y² - 3y³ + x⁻¹) (2m⁰ + y⁻²)
The distributive property allows to multiply a sum by multiplying each term separately and then add all of the products together.
y²(2m⁰ + y⁻²) - 3y³(2m⁰ + y⁻²) + x⁻¹(2m⁰ + y⁻²)
2(1)y² + y²⁻² - 3y³2(1) - 3y³⁻² + x⁻¹2(1) + x⁻¹y⁻²
2y² + 1 - 6y³ + 2x⁻¹ + x⁻¹y⁻²
Therefore, the expanding the expression y^2 - 3y^3 x^-1) 2m^0 y^-2 using distributive property is 2y² + 1 - 6y³ + 2x⁻¹ + x⁻¹y⁻²
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Factorize Completely
6xb + 2xy - 9mb - 6my
Answer:
(3b + 2y)(2x - 3m)
Step-by-step explanation:
6xb + 2xy - 9mb - 6my ( factor first/second and third/fourth terms )
= 2x(3b + y) - 3m(3b + 2y) ← factor out (3b + 2y) from each term
= (3b + 2y)(2x - 3m)
write 75 (base 10) using 2 numerals
Answer:
Step-by-step explanation:
75 = 64 + 8 + 2 + 1 = 1*2^6 + 1*2^3 + 1*2^1 + 1*2^0
There is no power 5, 4, or 2 so zeros go in those slots.
75 = 1001011 (Base 2)
Please help me ASAP!!! Answer both questions for example: 1= C and 2= A
2. The equation is given as follows: x + 4x = 25.
3. The constrains are given as follows: 0 ≤ x ≤ 25, 0 ≤ y ≤ 75.
What is the equation in item 2?The time spent running is given by:
Running = 4x.
The time spent walking is one-fourth of the time spent walking, hence it is given by:
Walking = 4x/4 = x.
The total time is the sum of the times spent running and walking, hence the expression is presented as follows:
x + 4x = 25.
What are the constraints in item 3?The variables are given as follows:
x: number of out-of-state hires.y: number of in-state hires.You can accept at most 25 out-of-state hires, hence:
0 ≤ x ≤ 25
(as the number cannot be negative).
The company plans to have three times as many in-state hires, hence:
0 ≤ y ≤ 75.
As:
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please help!
Solve the equation.
√3x-5-3√x = 0
x = -
[?
Answer:
x = 7
x = 2
√ 3x − 5 = x − 3
or
3x − 5 = ( x − 3 ) 2
or
3x − 5 = x 2 − 6x + 9
or
x 2 − 9x + 14 = 0
or
x 2 − 7x − 2x + 14 = 0
or
x(x − 7) − 2(x − 7) = 0
or
(x − 7) ( x − 2) = 0
or
x − 7 = 0
or
x = 7
Ans
1
or
x − 2 = 0
or
x = 2
Ans
2
Plans for a new apartment building call for apartments directly across the hall from each other to be congruent. This computer printout shows Apartment D. If the vertices of Apartment E are located at (-2X1, Y1), (-2%2, Y/2), (-2X3, y3), and (-2%4, y4), will Apartment E be congruent to Apartment D?
Answer:
Step-by-step explanation:
no because (-2X1, Y1), and-2X3, y3), arent congruent so the whole problem is not congruent
7. Write an equation for the line in slope-
intercept form.
Ay
2
4-2 O
2
-4
2
4
X
Answer: y= -2/4x - 3
Step-by-step explanation:
b=y-intercept
Equation for slope-intercept form: y=mx+b
Locate the y-int/b: -3=b
Identify the slope/m: -2/4= 2 down, 4 to the right
Insert slope and y-int into slop-intercept form: y= -2/4x - 3
Explain how you would find 36×3/4 mentally
Answer:
= 27
Step-by-step explanation:
36×3/4
36 × 3
--
4
(cross multiplication)9 × 3
= 27
Which of the following describes how the dotted line relates to the solid line (f(x))? reflection through the y-axis, f(x) → f(-x) reflection through the x-axis, f(x) → -f(x) reflection through the y-axis, f(x) → -f(x) reflection through the x-axis, f(x) → f(-x) | 100 POINTS|
Answer:
B) reflection through the x-axis, f(x) → -f(x)========================
We observe on the graph that:
The line is reflected across the horizontal axis, which is the x-axis,The reflection doesn't affect the x-coordinates,The reflection changes each y-coordinate to opposite sign.All the above helps us to conclude that:
This is the reflection through the x-axis, f(x) → -f(x)Answer:
Reflection through the x-axis, f(x) → -f(x).
Step-by-step explanation:
On comparison of the dotted red line with the solid blue line, it is apparent that the x-coordinates do not change, yet the y-coordinates are negatives of each other.
This suggests a reflection in the x-axis.
(Note: If the function was reflected in the y-axis, the y-coordinates would not change, yet the x-coordinates would be negatives of each other).
Mapping rule for reflection in the x-axis:
(x, y) → (x, -y)Therefore, as y → -y then f(x) → -f(x).
So the correct answer that describes how the dotted line relates to the solid line f(x) is:
Reflection through the x-axis, f(x) → -f(x).£410 is divided between Gordon, Malachy & Paul so that Gordon gets twice as much as Malachy, and Malachy gets three times as much as Paul. How much does Malachy get?
The amount of money that Malachy get is £123 .
In the question ,
it is given that ,
£410 is divided between Gordon, Malachy and Paul .
also given that Malachy gets three times as much as Paul ,
let the amount that Paul get = x .
So , the amount that Malachy get = 3x
it is given that Gordon gets twice as much as Malachy ,
that means , the amount that Gordon get = 2(3x) = 6x
given the total amount is £410 ,
So, equation representing the total amount is
x + 3x + 6x = 410
4x + 6x = 410
10x = 410
x = 410/10
x = 41
So , the amount that Paul get = £41 ,
amount that Malachy get = 3(41) = £123
amount that Gordon get = 6(41) = £246
Therefore , The amount of money that Malachy get is £123 .
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sin60° change to fraction
Answer:
[tex]\frac{\sqrt{2} }{3}[/tex]
Step-by-step explanation:
A triangle has two sides of length 4 and 6. What is the largest possible whole-number length for the third side?
Answer:
9
Step-by-step explanation:
given 2 sides of a triangle then the third side x lies within the limits
difference of 2 sides < x < sum of 2 sides , that is
6 - 4 < x < 6 + 4
2 < x < 10
then the largest possible length is 9
cybil and ronda are sisters. the letters from their names are placed on identical cards so that each of cards contains one letter. without replacement, two cards are selected at random from the cards. what is the probability that one letter is from each sister's name? express your answer as a common fraction.
Using the theories of probability, we got that 5/9 is the probability that one letter is from each sister's name if the letters from their names are placed on identical cards so that each of cards contains one letter. without replacement.
We know very well that if we want to count number of ways by which r object can be chosen from n objects ,this can be done in [tex]^nC_r[/tex] ways which is equivalent to =(n!/(r!.(n-r)!)
Here are the same case, we have 10 cards, in each of the card there is letter written on it. So number of ways to choose two cards such that it contains any letter is can be done in [tex]^1^0C_2[/tex] ways which is equivalent to 45 ways.
Similarly, number of ways of choosing card which contains only Cybil`s name =[tex]^5C_2[/tex] ways=10 ways.
Similarly, number of ways of choosing card which contains only Ronda`s name =[tex]^5C_2[/tex] ways=10 ways.
So the number of ways containing one letter from each name = 45 - 10 - 10 = 25
So....the probability of choosing one of these sets = 25 / 45 = 5 / 9 =0.55
Hence, Cybil and Ronda are sisters. the letters from their names are placed on identical cards so that each of cards contains one letter. without replacement, two cards are selected at random from the cards. the probability that one letter is from each sister's name is = 5/9.
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(Complete question) is:
cybil and ronda are sisters. the 10 letters from their names are placed on 10 identical cards so that each of cards contains one letter. without replacement, two cards are selected at random from the 10 cards. what is the probability that one letter is from each sister's name? express your answer as a common fraction.
Mrs.Galicia bakes and then sells cookies and brownies from her bakery. Her revenue for each baked good (in
dollars) is modeled by the equations, where x is the number of days since the bake goods started to sell.
Brownies: M (d) = 2x² + 8x - 4
Cookies: R(d) = 2x + 4
(a) Solve the system algebraically. After how many days is the revenue for each item the same? Show
your work and explain your answer.
(b) Graph this system to show both solutions. Label each axis appropriately.
a) After 1 day, the revenue for each item is the same.
b) Graph is shown in the attachment.
What is an equation?
An equation is a mathematical statement that proves two mathematical expressions are equal in algebra, and this is how it is most commonly used. In the equation 3x + 5 = 14, for instance, the two expressions 3x + 5 and 14 are separated.
M(d) = 2x² + 8x - 4
R(d) = 2x + 4
a) Find x by taking y=M(d)=R(d). ( same revenue=y)
y= 2x² + 8x - 4
y= 2x + 4
This shows that right-side expressions are equal.
2x² + 8x - 4 = 2x + 4
2x² + 8x - 4 - 2x - 4=0
2x² +6x-8=0
Find the factors
2(x-1)(x+4)=0
x-1=0, x+4=0
x= 1, x=-4
consider positive value for days
So, after 1 day, the revenue for each item is the same
b) The equations:
y= 2x² + 8x - 4
y= 2x + 4
By taking some random values for x and finding the corresponding y values, we get the ordered pairs in the form of (x,y).
By plotting and joining those points, we get the graph as shown in the attachment.
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Why is the degree of the dilated function one more than the degree of the original function?
The degree of a function has no effect by the dilation of the function.
and the degree of the dilated function is same as the degree of the original function.
Dilation is defined as, when a function is multiplied by any number, the graph of the function retain a new shape, either by stretch or by compression in different directions.
Now, when a function is dilated it is either stretched or compressed in upward or downward direction.
It does not affect the degree of the function as the number of roots will be same as original function.
So, the degree of the dilated function is same as the degree of the original function.
Hence, the degree of the dilated function is same as the degree of the original function.
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