Answer:
8/13
Step-by-step explanation:
In a standard deck there are 52 cards. Let A denote the event of drawing a black card and B denote the event of drawing face card. We have to find P(A or B) or P(A∪B).
P(A∪B)=P(A)+P(B)-P(A∩B)
There are 26 black cards in a standard deck so,
P(A)=26/52.
There are 12 face cards in a standard deck so,
P(B)=12/52.
There are 6 cards that are black face cards.
P(A∩B)=6/52.
P(A∪B)=P(A)+P(B)-P(A∩B)
P(A∪B)=26/52+12/52-6/52
P(A∪B)=38/52-6/52
P(A∪B)=32/52
P(A∪B)=8/13
Thus, probability of drawing a black card or a face card is 8/13.
polar decomposition of complex matrx
Answer:
hope it helps you
Step-by-step explanation:
The right polar decomposition of a matrix A ∈ Cm×n m ≥ n has the form A = UP where U ∈ Cm×n is a matrix with orthonormal columns and P ∈ Cn×n is positive semi-definite. Definition 2.2 (Left Polar Decomposition).
Explain how to estimate the product of 12/3/8 times 6/7/8.
Answer:
210 approximately.
Step-by-step explanation:
12/3/8 = 12*8/3 = 32
6/7/8 = 6*8/7 = 48/7 = 7 approximately
So the product is approximately 30*7 = 210.
A. 2,−4, 6,−8
B. −1/3, −1/6, 1/2, 1
C. −11/0, 0.2, 3/10, 1/4
D. −11/2,−0.75,−0.25, 1/12
E. −8,−34,−3, 1/4
Please tell me all of the answers that are correctly in order from least to greatest.
Answer:
The answer is D
Step-by-step explanation:
Cant be C because one of them is undefined.
Cant be A because 2 is greater than -4
can't be B because -1/3 is closer to 0 than -1/6
can't be E because -8 is closer to 0 than -34
D is all in order.
Answer:
d
Step-by-step explanation:
because I'm tired and tried trying to dosn hem
How many of the 20% acidic solution be added to create the needed 30% acidity in the final mixture
Big ideas math segments lesson 1.2
12, 14,16,18
The provided arithmetic sequence adds up to 60.
What is an arithmetic sequence?The difference between every two successive terms in an arithmetic series is always the same. The number "a" is the first term, and "d" is the common difference between the sequence. The nth term of an arithmetic sequence is given by. aₙ = a + (n – 1)d
Given an arithmetic sequence 12, 14,16,18
The general formula for the Sum of arithmetic sequence:
Sn = n/2 [2a+(n−1)d]
where: n = the number of terms to be added.
a = the first term in the sequence.
d = the constant value between terms.
In our case,
a = 12
n = 4
and d = 14 - 12 = 2
thus
Sum = 4/2(2*12 + (4- 1 )2)
Sum = 2( 24 + 6)
Sum = 60
therefore, the Sum of the given Arithmetic sequence is 60.
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I need help plssssssss
Answer:
Choices Please?
Step-by-step explanation:
Comment on this
Answer:
.
Step-by-step explanation:
Susan needs to buy apples and oranges to make fruit salad. She needs 15 fruits in all. Apples cost $3 per piece, and oranges cost $2 per piece. Let m represent the number of apples. Identify an expression that represents the amount Susan spent on the fruits. Then identify the amount she spent if she bought 6 apples. 30 + 5m; $36 30 + m; $36 30 + 5m; $24 30 + m; $24
Answer:
m + 30 ; $36
Step-by-step explanation:
Given that:
Total fruits needed = 15
Fruits needed :
Apple (m) ; cost = $3 per piece
Oranges (o) ; cost = $2 per piece
Amount spent on fruits :
[(cost of apple * number of apples) + (cost of orange *(total fruits - number of apples)]
3m + 2(15 - m)
3m + 30 - 2m
3m - 2m + 30
m + 30
Amount spent if 6 apples is purchased :
m = 6
m + 30
6 + 30 = $36
What are the two decisions that you can make from performing a hypothesis test? Select all that apply.
A.
accept the alternative hypothesis
B.
fail to reject the alternative hypothesis
C.
accept the null hypothesis
D.
fail to reject the null hypothesis
E.
reject the null hypothesis
F.
reject the alternative hypothesis
G.
make a type II error
H.
make a type I error
Answer:
reject the null hypothesis or fail to reject the null hypothesis.
The two decisions that perform the hypothesis test includes fail to deny the null hypothesis, and deny the null hypothesis.
Hypothesis testing refers to the testing that can give access to the reliability of the hypothesis via sample data.
There are two types of decisions that are considered to be wrong while performing the hypothesis test is:
In the case when the hypothesis is true but i.e. rejected. This is known as a type I error.In the case when the hypothesis is false, but it is failed to reject it. This is known as a type II error.So, the decisions that should not be considered while performing the hypothesis test is:
Acceptance of the alternative hypothesis.Acceptance of the null hypothesis.Fail to deny the alternative hypothesis.Deny the alternative hypothesis.Making of type I error.Making of type II error.Therefore we can conclude that options D and option E are considered from performing a hypothesis test.
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A local bank charges $9 per month plus 24 per check. The credit union charges $7 per month plus 4e per chock. How many checks should be written each month to make the credit union a bottor deal?
The credit union is a better deal when writing or fower checks per month
This question was not properly written
Correct Question
A local bank charges $9 per month plus 2c per check. The credit union charges $7 per month plus 4cper check. How many checks should be written each month to make the credit union a better deal?
The credit union is a better deal when writing fewer checks per month
Answer:
Writing between 0 to 99 checks makes the credit union a better deal.
Step-by-step explanation:
Let the number of checks be represented by x
Note, 1 cent = $0.01
A local bank charges $9 per month plus 2c per check.
2c = $0.02
$9 + 0.02× x
= 9 + 0.02x
The credit union charges $7 per month plus 4c per check.
4c = $0.04
= $7 + 0.04 × x
= 7 + 0.04x
The credit union is a better deal when writing fewer checks per month
Hence:
Credit union < Local bank
7 + 0.04x < 9 + 0.02x
Collect like terms
0.04x - 0.02x < 9 - 7
0.02x < 2
x < 2/0.02
x < 100 checks
Hence, writing less than 100 checks (i.e writing between 0 to 99 checks) makes the credit union a better deal.
a) how would you work out 4 1/3 x 6?
The solution of the expression 4¹/₃ x 6 will be 26.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that the expression is 4¹/₃ x 6. The expression of multiplication will be solved as below,
E = 4¹/₃ x 6
E = ( 13 / 3 0 x 6
E = 13 x 2
E = 26
Hence, the solution will be 26.
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Walking100
a) How many students ride in a tricycle, motorcycle and car going to their school
b) How many students ride in both a motorcycle and a tricycle?
c) How many students ride in both a motorcycle and a car?
d) How many students ride in both a car and tricycle?
e.)How many students go to school
in a car only;
in a motorcycle only;
30
Complete question :
The Venn diagram relating to the question can be found in the picture attached below :
Answer:
A.) 15 ; b.) 17 ; c.) 20 ; d.) 19 ; e.) 55 ; 67; 76 ;100 ; F.) 369
Step-by-step explanation:
Let :
Cars = C ; Motorcycle = M ; Tricycle = T ; Walking = W
a) How many students ride in a tricycle, motorcycle and car going to their school
Intersection of the 3 modes;
(C n M n T) = 15 ; it is the number which sits in between all the three circles.
B.) How many students ride in both a motorcycle and a tricycle?
(M n T) = 17 ; number in the middle of both circles representing motorcycle and tricycle
C.) How many students ride in both a motorcycle and a car?
(M n C) = 20 ; number in the middle of both circles representing motorcycle and Car
D) How many students ride in both a car and tricycle?
(C n T) = 19 ; number in the middle of both circles representing Car and tricycle
e.)How many students go to school
in a car only = 55
in a motorcycle only = 67
Tricycle only = 76
Walking = 100
F.) How many Grade Seven students of Koronadal National Comprehensive High School are there in all?
(100 + 67 + 76 + 55 + 19 + 20 + 17 + 15) = 369
Your family goes to dinner. The meal costs $55 for all of you. You pay 7% sales tax and leave a 9% tip. What is the total cost of the meal after tax and tip?
Answer:
8.80 dollars
Step-by-step explanation:
The cost of parking a motor home in a state park includes a one time fee of $180, plus a daily rate of $55 per day. Anthony prepaid for his stay and paid the state park commission a fee of $565. This paid for the one time fee as well as for a number of days. How many days of parking did Anthony pay for? Group of answer choices
Answer:
Anthony paid for 7 days of parking.
Step-by-step explanation:
From the information given, the cost of parking a motor home in a state park would be equal to the one time fee plus the result of multiplying the daily rate for the number of days:
c=180+55x, where c is the cost of parking the motor home and x is the number of days.
Now, you can replace c with 565 that is the amount Anthony prepaid and you can solve for x to be able to find the number of days he paid for:
565=180+55x
565-180=55x
385=55x
x=385/55
x=7
According to this, Anthony paid for 7 days of parking.
What must be true about Alternate Interior Angle?
Answer:
Congruent
Step-by-step explanation:
They need to be congruent, it would not be alternate interior angle if the transversal intersects two parallel lines.
2y-5y=-10.
what are the x and y intercepts
Answer:
The y intercept is (0,2) and the x intercept is (5,0)
Step-by-step explanation:
Find the y-intercept by letting x = 0
2(0) + 5y = 10
5y = 10
y = 2 Therefore, the y-intercept is (0, 2)
Find the x-intercept by letting y = 0
2x + 5(0) = 10
2x = 10
x = 5 Therefore, the x-intercept is (5, 0)
Here is the graph!!
1. The perimeter of a rectangular rug is 40 feet. The length is 4 feet less
than twice the width.
a. Find the length and the width of the rug
b. Find the area of the rug.
2. The sum of three numbers is 45. The second number is 8 less than the
first and the third number is 5more than twice the first. Find the three
numbers.
I need help with both questions please help.
Jan designs a new logo for Kim's website. Kim pays Jan $45 for 5 hours of work. How much will Kim pay Jan for 15 hours of work?
am not sure but i think its 135$
i divided 45 by 5 to get the pay per hour
then multipled 9 by 15 to get the answer
am not the best in maths so its better u get someone to check if before u submit.
Answer:
675
Step-by-step explanation:
$45✖15 hours=675
so you see what we did here is multiply the money amount by the hour .
HOPE IT HELPS :)PLEASE GIVE ME brilliant!!!............................................................(18x-8) (4x+16)
Answer:
[tex](18x-8)(4x+16)=72x^2+256x-128[/tex]
That's really all you can do to that equation, I think.
Hope this helps!
Enter an equation in standard form to model the linear situation.
A barrel of oil was filled at a constant rate of 6.7 gal/min. The barrel had 12 gallons before filling began.
Answer:
jdfjafdsds
Step-by-step explanation:
Martha has some nickels and dimes worth $6.25. She has three times as many nickels as dimes. How many nickels does she have?
Answer:
75 nickels.
Step-by-step explanation:
Here is the system of equations you can use:
0.05n+0.1d=6.25 (which can be converted to 5n+10d=625)
3d=n
5(3d)+10d=625
15d+10d=625
25d=625
d=25
3(25)=n
n=75
Denise is going to shop with the $250.00 that she earned from doing chores. She wants to save
20% of her money to put into a savings account. She buys a pair of jeans for $75.00 and a new
leather coat for $110.00, with 5% sales tax on both items. Does Denise still have the amount of
money she planned to put into her savings account?
Yes she does.
I just answered the question.
PLEASE HELP ME
My teacher is really bad at explaining this so I'm confused
-2/3x^2-1=17 can y'all help me please !!!
The answer is ±3[tex]\sqrt{3\\}[/tex]
First, you should make one side of the quadratic 0. You can do this by subtracting 17 from both sides, making the equation
2/3x^2 - 18 = 0
To make everything an integer, you can multiply both sides by 3/2, making the equation
x^2 - 27 = 0
By adding 27 to both sides, you get
x^2 = 27
Now you are practically done! By taking the square root of both sides, you get
x = ±3[tex]\sqrt{3\\}[/tex]
Ben solved a fraction division problem using the rule “multiply by the reciprocal.” Look at his work.
StartFraction 7 Over 20 EndFraction divided by two-fifths. StartFraction 20 Over 7 EndFraction times two-fifths = StartFraction 40 Over 35 EndFraction = StartFraction 8 Over 7 EndFraction = 1 and StartFraction 1 Over 7 EndFraction
Did he solve the problem correctly?
Yes. He solved the problem correctly.
No. He multiplied the dividend by the divisor.
No. He multiplied the denominators instead of finding a common denominator.
No. He multiplied with the reciprocal of the dividend instead of with the reciprocal of the divisor.
Answer:
(d) No. He multiplied with the reciprocal of the dividend instead of with the reciprocal of the divisor.
Step-by-step explanation:
The problem should have been written ...
[tex]\dfrac{7}{20}\div\dfrac{2}{5}=\dfrac{7}{20}\times\dfrac{5}{2}\qquad\text{the reciprocal of the divisor is used}[/tex]
Instead, Ben wrote it as ...
[tex]=\dfrac{20}{7}\times\dfrac{2}{5}\qquad\text{the reciprocal of the dividend is erroneously used}[/tex]
_____
Additional comment
Ben will get the reciprocal of the proper answer: 8/7 instead of the correct value of 7/8.
Answer:
D) No. He multiplied with the reciprocal of the dividend instead of with the reciprocal of the divisor.
Step-by-step explanation:
LaTeX: Create\:an\:equation\:in\:slope\:intercept\:form\:that\:is\:parallel\:to\:y\:=\frac{\:1}{3}x\:+\:4\:and\:goes\:through\:the\:point\:\left(-3,\:1\right).C r e a t e a n e q u a t i o n i n s l o p e i n t e r c e p t f o r m t h a t i s p a r a l l e l t o y = 1 3 x + 4 a n d g o e s t h r o u g h t h e p o i n t ( − 3 , 1 ) .
Group of answer choices
LaTeX: y=\frac{1}{3}x+2 y = 1 3 x + 2 y = 1 3 x + 2 y = 1 3 x + 2
LaTeX: y\:=\:-3x\:+\:4 y = − 3 x + 4 y = − 3 x + 4 y = − 3 x + 4
LaTeX: y=\frac{1}{3}x y = 1 3 x y = 1 3 x y = 1 3 x
LaTeX: y=-3x-8
Answer:
[tex]y = \frac{1}{3}x +2[/tex]
Step-by-step explanation:
Given
Equation:
[tex]y = \frac{1}{3}x + 4[/tex]
[tex]Point: (-3,1)[/tex]
Required
Determine the equation of the point parallel to the given equation
First, we need to determine the slope of: [tex]y = \frac{1}{3}x + 4[/tex] using
[tex]y = mx + b[/tex]
Where m represents slope.
By comparison
[tex]m = \frac{1}{3}[/tex]
The equation of the point is calculated as thus:
[tex]y - y_1 = m(x - x_1)[/tex]
Where [tex](x_1,y_1) = (-3,1)[/tex]
So, we have:
[tex]y - y_1 = m(x - x_1)[/tex]
[tex]y - 1 = \frac{1}{3}(x - (-3))[/tex]
[tex]y - 1 = \frac{1}{3}(x +3)[/tex]
[tex]y - 1 = \frac{1}{3}x +1[/tex]
Solve for y
[tex]y = \frac{1}{3}x +1 +1[/tex]
[tex]y = \frac{1}{3}x +2[/tex]
The GCF of two numbers is equal to the lesser of the numbers? Always,sometimes, or never true
Answer:
Sometimes
Step-by-step explanation:
To answer this question, I'll make use of the following illustrations:
GCF of 4 and 10
[tex]4 = 1 * 2 * 2[/tex]
[tex]10 = 1 * 2 * 5[/tex]
Hence:
The GCF is
[tex]GCF = 1 * 2[/tex]
[tex]GCF = 2[/tex]
GCF of 5 and 10
[tex]5 = 1 * 5[/tex]
[tex]10 = 1 * 2 * 5[/tex]
[tex]GCF = 1 * 5[/tex]
[tex]GCF = 5[/tex]
In the first scenario, the GCF is lesser than the smallest number.
In the second, the GCF is equal to the smaller number.
Hence:
The option that completes the question is "sometimes"
i need help with this equation: p+9=-1
Answer:
p = - 10
Step-by-step explanation:
Step 1:
p + 9 = - 1 Equation
Step 2:
p = - 1 - 9 Subtract 9 on both sides
Answer:
p = - 10
Hope This Helps :)
Translate the sentence into an equation.
Twice the difference of a number and 8 is 2.
Use the variable c for the unknown number.
Answer:
2×c=8 c=4
Step-by-step explanation:
PLEASE HELP I WILL GIVE BRAINLIEST!!!
Solve for x: 5x + 15 = 28 (5 points)
forty-three over five
thirteen over five
13
43
Answer:
x=3
or 13/5
Step-by-step explanation:
5x+15=28 (-15)
5x=13 (/5)
x=3
Find the sequence whose nth term is 4n + 5 also prove that the sequence is an AP