A card is drawn from a standard deck, not replaced, and another is drawn. What is the probability of choosing a heart then a spade?
Answers
Answer:
49/52
Step-by-step explanation:
Related Questions
Number 4. HURRY PLEASE
Answers
Answer:
its b
Step-by-step explanation:
becasue i had the same typ eof questions 2 days ago glad to help pls mark it 5 starts its 100% corect i am an A+ student
Three swimmers competed in a 50 m freestyle race. A description of their swimming speeds is given. Order the swimmers from first to third place.
1) Terrance swam faster than mike
2) Nathan swam 50 meters in 32 seconds
3) Mike swam 50 meters in 28 seconds
Answers
Answer:
terrance then mike then nathan
Step-by-step explanation:
please help 7th grade math question
Answers
Answer: 5 1/2 rounded
5.33
Step-by-step explanation:
What are the two decisions that you can make from performing a hypothesis test?
Answers
The two decision while performing hypothesis, these are -
Reject the null hypothesisFail to reject the null hypothesis.What is hypothesis?an assertion on a population's makeup. Frequently, a population parameter is used to express it. A statistical hypothesis that is to be tested is known as a null hypothesis.
Alternative hypothesis: A hypothesis that differs from the null hypothesis.
In the scientific process, the hypothesis is developed prior to the completion of any relevant study, other than a brief background review.
These claims list certain factors as well as their suggested outcomes. Cavities arise as a result of the variable in this case, which is the sugar intake.
The decisions are -
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28. There are 5 red marbles, 9 blue marbles, 4
yellow marbles and 2 green marbles in a bag.
a
What is the ratio of red marbles to the total
marbles in the bag?
Answers
Answer:
Step-by-step explanation:
There are a total of 5 + 9 + 4 + 2 = 20 marbles
The number of red marbles is 5
Therefore the ratio of red to total = 5/20 or 1/4
In a group there are 3 boys and 4 girls. A child is selected from the group at random. Find the probability that the selected child is a boy.
Answers
Answer:
3/7
Step-by-step explanation:
Probability=Number of possible items÷Number of total items.
We will make the possible item 3 because we are looking for the probability whether a boy will be picked.
The number of total items will therefore be: the number of boys + the number of girls; that will be 3+4 =7.
So the probability of picking a boy will be 3/7
THANK YOU.
A control chart plots 19 samples per day, 7 days a week. The process runs 24 hours per day and the chart is currently in control. 1. What is the probability of plotting 5 samples in a row in Zone B? a. 0.8145 b. 1.08 c. 0.02117 d. 0.005314 e. 0.001435 2. On average, an observation will fall into either Zone A or Zone B approximately once every hours. a. 1 b. 2 c. 3 d. 4 e. 5 f. 6
Answers
The probability of plotting 5 samples in a row in Zone B is 0.02117. Therefore, the answer to the second question is option D, 4. On average, an observation will fall into either Zone A or Zone B approximately once every 4 hours.
In control charts, Zone B represents the area between one and two standard deviations away from the process mean. To calculate the probability of plotting 5 samples in a row in Zone B, we can use the binomial probability formula. The probability of a sample falling in Zone B is given by p = 0.267 (since Zone B represents one standard deviation away from the mean, which has a probability of 0.267 according to the standard normal distribution table).
The probability of plotting 5 samples in a row in Zone B can be calculated as (0.267)^5 = 0.02117. Therefore, the answer is option c, 0.02117.
To determine the average time it takes for an observation to fall into either Zone A or Zone B, we need to consider the frequency of observations falling within these zones. In this case, 19 samples are taken per day, 7 days a week, resulting in a total of 19 * 7 = 133 samples per week.
Since the process runs 24 hours per day, the average time for an observation to fall into either Zone A or Zone B can be calculated as 24 hours / 133 samples ≈ 0.18 hours per sample. Rounded to the nearest whole number, this is approximately once every 4 hours.
Therefore, the answer to the second question is option d, 4. On average, an observation will fall into either Zone A or Zone B approximately once every 4 hours.
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Trapezoid W′X′Y′Z′ is the image of trapezoid WXYZ under a dilation through point C. What scale factor was used in the dilation? −7/3 −3/7 3/7 7/3
Answers
14 / 6 = 7/3.
Therefore, 7/3 is the scale factor used in this dilation.
The scale factor is the ratio of the new measurement to the old measurement. The scale factor that was used in the dilation is 7/3.
How to calculate the scale factor?Suppose the initial measurement of a figure was x units.
And let the figure is scaled and the new measurement is of y units.
Since the scaling is done by multiplication of some constant, that constant is called the scale factor. Let that constant be 's'.
Then we have:
\(s \times x = y\\s = \dfrac{y}{x}\)
Thus, the scale factor is the ratio of the new measurement to the old measurement.
Scale factor
= Dimension of the new shape ÷ Dimension of the original shape
= 14ft / 6ft
= 7ft / 3ft
Hence, the scale factor that was used in the dilation is 7/3.
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b) Select all expressions that can be used to find 85% of 280.
A.
8.5
10
280
B.
0.85
100
280
C.
85
100
280
Answers
Answer:
238
85%of 280 is 238
Step-by-step explanation:
hope this helps
1-2 Plot the point whose spherical coordinates are given. Then find the rectangular coordinates of the point. 1. (a) (6, 1/3, 1/6) (b) (3, 7/2, 37/4
Answers
(a) To plot the point (6, 1/3, 1/6), we first convert to Cartesian coordinates as follows:
x = r sinφ cosθ = 6(1/3)cos(1/6π) ≈ 2.991
y = r sinφ sinθ = 6(1/3)sin(1/6π) ≈ 0.499 z = r cosφ = 6 cos(1/3π) ≈ 5.196
Therefore, the rectangular coordinates of the point (6, 1/3, 1/6) are approximately (2.991, 0.499, 5.196).
(b) To plot the point (3, 7/2, 37/4), we first convert to Cartesian coordinates as follows:
x = r sinφ cosθ = 3(1/2)cos(37/8π) ≈ -1.149
y = r sinφ sinθ = 3(1/2)sin(37/8π) ≈ -1.172 z = r cosφ = 3 cos(7/4π) ≈ -1.097
The rectangular coordinates of the point (3, 7/2, 37/4) are approximately (-1.149, -1.172, -1.097).
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Which built-in data type stores only whole numbers? a. whole b. number c. float d. int
Answers
The built-in data type that stores only whole numbers is int data type
Built-in data types are the data types used to declare and store the variables in the program, They are also known as primary data types
Int data type is a data type that can store the whole number. The range of int data type is from -2147483648 to 2147483647.
Here,
Here the condition is a built-in data type stores only whole numbers
So, the int data types satisfy these conditions
Hence, the built-in data type that stores only whole numbers is int data type
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2b - 6 = -4 Answer quick please
Answers
Answer:
b=1
Step-by-step explanation:
Identify the terminal point for a 45° angle in a unit circle.O A. (24)O B. (1.)Oc. (1,1)O D. (2,3)
Answers
(x, y) = ( cos 45, sin 45) =
\(=\text{ (}\frac{\sqrt[]{2}}{2}\text{ , }\frac{\sqrt[]{2}}{2}\text{ )}\)The correct option is A
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What should be done to x^2 - 12x to create a perfect square?
A) add 36
B)subtract 6
C)add 6
D)subtract 36
Answers
Answer:
A.) add 36To find the last term, divide the coefficient of the middle term by 2 then raise to the power of 2,that will be :
\(( \frac{ - 12}{2} )^{2} = { - 6}^{2} = 36 \)
Answer:
add 36
Step-by-step explanation:
if x + ay = b then y equals
Answers
(Isolate y from equation)
ay = b - x
y = (b - x)/a
Hey there!
\(x+ay=b\\\) for y
Add -x to both sides:
\(ay+x+-x=b+-x\\ay=b-x\)
Now, let's divide both sides by a:
\(\frac{ay}{a} =\frac{b-x}{a}\)
\(y=\frac{b-x}{a}\)
Hope this helps!
Estimate 40% of 128
Please help :c
Answers
Answer:
51.2 is 40% of 128
Step-by-step explanation:
Answer:
76.8
Step-by-step explanation:
128 x .40 = 51.2
128 - 51.2 =76.8
which point has coordinates
Answers
Answer:
The coordinates of a point are a pair of numbers that define its exact location on a two-dimensional plane. Recall that the coordinate plane has two axes at right angles to each other, called the x and y axis.
Solve for 50+77
50+77=___
Answers
Answer:
the answer is 127 have a good day
Answer:
127
Step-by-step explanation:
add 77+50 carry the one over
Twoooooooooooooooooooooooooooo
Answers
Answer:
n = 60.22
Step-by-step explanation:
Hello
To find Sn, we need to draw out equations for each a₇ and a₁₉
In an arithmetic progression,
Sn = a + (n-1)d
Where Sn = sum of the A.P
a = first term
d = common difference
a₇ = 32
32 = a + (7-1)d
32 = a + 6d ........equation (i)
a₁₉ = 140
140 = a + (19-1)d
140 = a + 18d .........equation (ii)
Solve equation (i) and (ii) simultaneously
From equation (i)
32 = a + 6d
Make a the subject of formula
a = 32 - 6d .....equation (iii)
Put equation (iii) into equation (ii)
140 = (32 - 6d) + 18d
140 = 32 - 6d + 18d
Collect like terms
140 - 32 = 12d
12d = 108
d = 108 / 12
d = 9
Put d = 9 in equation (i)
32 = a + 6(9)
32 = a + 54
a = 32 - 54
a = -22
When Sn = 511
Sn = a + (n - 1)d
Substitute and solve for n
511 = -22 + (n-1) × 9
511 = -22 + 9n - 9
511 = -31 + 9n
511 + 31 = 9n
542 = 9n
n = 542 / 9
n = 60.22
A hamburger costs 30 cents more than a hot dog, and 20 cents less than a hamburger. If you buy 3 hamburgers, 4 cheeseburgers, 2 hot dogs, and give a 1. 25 tip for a toal of 10, how much does a hamburger cost
Answers
The cost of a hamburger is $1.10. A hamburger costs 30 cents more than a hot dog.- 3 hamburgers were purchased.- 4 cheeseburgers were purchased.
Simplifying this equation:9h + 40 - 60 = total cost9h - 20 = total costNow we can solve for h (the cost of a hamburger) by adding the $1.25 tip and setting it equal to $10:9h - 20 + 1.25 = 109h - 18.75 = 1010 - 1.25 + 18.75 = 27.50Total cost before tip was $9h - 20, so:9h - 20 = 27.5036 = 9h1 = h
Therefore, a hamburger costs $1.10.
The cost of a hamburger can be determined by using algebra. If we let h be the cost of a hamburger, then the cost of a hot dog would be (h-30), and the cost of a cheeseburger would be (h+20).Since 3 hamburgers were purchased, the total cost for hamburgers is 3h. Similarly, the total cost of cheeseburgers is 4(h+20), and the total cost of hot dogs is 2(h-30). Adding up these values gives us an equation for the total cost of food (before tip):3h + 4(h+20) + 2(h-30) = total cost
Simplifying this equation:9h + 40 - 60 = total cost9h - 20 = total cost
Now we can solve for h (the cost of a hamburger) by adding the $1.25 tip and setting it equal to $10:9h - 20 + 1.25 = 109h - 18.75 = 1010 - 1.25 + 18.75 = 27.50Total cost before tip was $9h - 20, so:9h - 20 = 27.5036 = 9h1 = h
Therefore, a hamburger costs $1.10.
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Help! :))
In 10 years the population increased from 87,196 to 120,310. By how many people did the population increase in 10 years?
Answers
Answer:
33114
120310 - 87196=33114
Step-by-step explanation:
-4(-3n-8)=104
A:11
B:-6
C:10
D:6
Answers
♡ The Question ♡
- -4(-3n-8)=104
*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*
♡ The Answer ♡
- D) 6
*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*
♡ The Explanation/Step-By-Step ♡
- -4(-3n - 8) = 104
Divide both sides by -4!
-4(-3n - 8) over -4 = 104/-4
Simplify!
-3n - 8 = -26
Add 8 to both sides!
-3n - 8 + 8 = -26 + 8
Simplify!
-3n = -18
Divide both sides by -3!
-3n/-3 = -18/-3
Simplify!
n = 6
*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*
♡ Tips ♡
- No tips provided!
find the dimensions of the closed right circular cylinder can of smallest surface area whose volume is 1024 cm
Answers
The dimensions of the closed right circular cylinder with the smallest surface area and a volume of 1024 cm can be determined by finding the radius and height that minimize the surface area.
To find the dimensions of the cylinder with the smallest surface area, we need to minimize the surface area function while keeping the volume fixed at 1024 cm. The surface area of a closed right circular cylinder is given by the formula A = 2πr² + 2πrh, where r is the radius and h is the height.
To minimize the surface area, we can use calculus. By taking the derivative of the surface area function with respect to either the radius or the height, setting it equal to zero, and solving for the variables, we can find the critical points.
Differentiating the surface area function with respect to the radius, we get dA/dr = 4πr + 2πh. Setting this derivative equal to zero, we find that h = -2r. However, since the height cannot be negative, we discard this solution.
Next, differentiating the surface area function with respect to the height, we get dA/dh = 2πr. Setting this derivative equal to zero, we find that r = 0. Therefore, the only critical point is when r = 0, which means the cylinder has no radius and no surface area.
Since a cylinder without a radius is not possible, we conclude that there is no cylinder with the smallest surface area and a volume of 1024 cm. It is important to note that the surface area can be arbitrarily small as the height approaches infinity, but it cannot be minimized for a fixed volume.
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Using determinant, find the area of the triangle whose vertices are :
(−3,5),(3,−6) and (7,2).
Answers
The area of the triangle whose vertices are (-3, 5), (3, -6), and (7, 2) is 14.
To find the area of a triangle given the coordinates of its vertices, we can use the formula:
Area = 1/2 * |(x1y2 + x2y3 + x3y1) - (y1x2 + y2x3 + y3x1)|
where (x1,y1), (x2,y2), and (x3,y3) are the coordinates of the three vertices.
Substituting the given coordinates, we get:
Area = 1/2 * |(-3*-6 + 32 + 75) - (5*3 - (-6)7 + 2(-3))|
= 1/2 * |(-18 + 6 + 35) - (15 + 42 - 6)|
= 1/2 * |23 - 51|
= 1/2 * |-28|
= 14
Therefore, the area of the triangle is 14 square units.
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Question 1:
Solve this system of equations using any method.
4x – y = 5
3x + y = 16
a. (3, 5)
b. (4, 11)
c. (4, 4)
d. (3, 7)
Question 2:
Solve the following system of equations.
d + e = 6
d – e = 4
a. no solution
b. (5, 1)
c. (3, –1)
d. infinite number of solutions
Question 3:
Solve the following system of equations by linear combination:
4x + 3y = 12
y = x – 10
a. (3, –7)
b. (6, –4)
c. (–7, 3)
d. (–4, 6)
Answers
Answer:
Question 1: d. (3, 7)
Question 2: b. (5, 1)
Question 3: b. (6, –4)
Step-by-step explanation:
Question 1:
Solve this system of equations using any method.
4x – y = 5
3x + y = 16
Add the equations.
7x = 21
x = 3
4(3) - y = 5
-y = -7
y = 7
d. (3, 7)
Question 2:
Solve the following system of equations.
d + e = 6
d – e = 4
Add the equations.
2d = 10
d = 5
5 + e = 6
e = 1
b. (5, 1)
Question 3:
Solve the following system of equations by linear combination:
4x + 3y = 12
y = x – 10
4x + 3y = 12
-x + y = -10
Multiply the second equation by 4 and add to the first equation.
4x + 3y = 12
(+) -4x + 4y = -40
----------------------------
7y = -28
y = -4
-4 = x - 10
x = 6
b. (6, –4)
.
A person invests 10000 dollars in a bank. The bank pays 5.5% interest compounded
monthly. To the nearest tenth of a year, how long must the
person leave the
in the bank until it reaches 27400 dollars?
leave the money
r
A = P(1 + -)nt
n
Answers
Answer:
The answer is 18.4 months.
TEMPERATURE The temperature on a thermometer dropped from a reading of 25°to -8°. Find the midpoint of these temperatures.
Answers
Answer:
8.5°
Step-by-step explanation:
25 + (-8)
=25 - 8
=17 ÷ 2
= 8.5°
My car uses 8.5L of petrol per 100km travelled. If petrol costs $2.05 per litre, how much will the petrol cost for my trip?
Answers
Answer:
$0.17425/Km
Step-by-step explanation:
8.5L/100Km*$2.05/L
= $0.17425/Km
number of your answer choice and the answer itself.
2. The point (5,-9) is the image under the translation (x, y) = (x + 4, y - 2). What is the pre-image?
1) (9,-11)
2) (1, -7)
3) (1, -11)
4) (20, 18)
+ Ac
Pear Deck Interactive Slide
Students, write your response!
Answers
Answer:
Answer: (1,-7)
Step-by-step explanation:
since the translation is under (x + 4, y - 2)
the symbols (+ and -) would change so the translation to use would be
(x - 4, y + 2)
so you plug in (5, -9) to the new translation and you get your answer which is (1,-7)
A group of 24 students and 3 adults visited the zoo. The admission fee for an adult was $4 more than the fee for a student. The total amount due
was $133.50.
What was the cost of each type of admission fee?
Select from the drop-down menus to correctly complete the statement.
Adult admission fees cost $___ and student admission fees cost $___