Answer:
0.54
Step-by-step explanation:
In Probability "OR" means "ADDITION" and "AND" means "MULTIPLICATION"
Here, we want probability of Jack "OR" Red, so we find individual probabilities and then "ADD" them.
There are 26 cards that are RED, half of the deck. So probability of RED CARD is:
P(red) = 26/52 = 1/2
Now, there are 4 Jacks in the whole deck, 2 red Jack and 2 black Jack. We already accounted for the 2 red jacks, so we have 2 black Jacks at hand. So
P(Jack) = 2/52 = 1/26
Now, we add the 2 probabilities:
P(jack or red) = 1/2 + 1/26 = 13/26 + 1/26 = 14/26 = 0.54 (rounded to 2 decimal places)
The numbers 3 and 10 are on a number line.
Use a model to explain how to find the
distance between the numbers.
Explain in words how to find the distance
between 3 and 10 on the number line.
Answer:
7
Step-by-step explanation:
Using subtraction method, the distance between 3 and 10 is 7. On the number line, the starting point is 3; therefore, from 3 movement will take seven times to get to 10.
What is the distance between the points (3,12) and (14,2)
Answer:
square root of 221
Step-by-step explanation:
d= sqrt (14-3)^2 + (2-12)^2
sqrt 121+100= sqaure root of 221
Answer:
Distance between the points (3, 12) and (14, 2) is 14.8661
Step-by-step explanation:
Distance between two points = √(xB−xA)^2+(yB−yA)^2
Solution :
Distance between two points = √(14−3)^2+(2−12)^2
= √11^2+(−10)^2
= √121+100
= √221 = 14.8661
After spending 1/4 of his allowance on a book and 1/3 of the remainder on stationery, John has $18 left. Find the cost of the book.
This problem is tricky. Let's break it down.
1/4 - book
------------------------------------------------------
1/3 of the remainder(3/4) - stationery
"OF" MEANS MULTIPLY
1/3 x 3/4 = 1/4
So, 1/4 of total allowance on stationery.
Meaning, he spent 1/2 of his allowance in all, and 1/2 of his allowance is $18.
Since the book cost 1/4 of his allowance, and (1/4)2 = 1/2, the book cost 18/2 = $9.
0.5x+7/3 = 21/4 cross multiply
Answer:
Step-by-step explanation:
I'm not sure I would cross multiply as my first step.
How about subtracting 7/3 first.
0.5x = 21/4 - 7/3
0.5x = 21*3/(4*3) - 7*4/(3*4)
0.5x = 63 / 12 - 28/12
0.5x = 35/ 12 Now multiply by 2
2*0.5x = 35*2 / 12
x = 70/12
x = 5 10/12 or
x = 5 5/6 or
x = 5.8333333
There might be a slightly easier way of doing this.
Suppose you multiply by 2 to begin with
x + 14/3 = 42/4
x + 14/3 = 21/2
x = 21/2 - 14/3
x = 63/6 - 28/6
x = 35/6
x = 5 5/6
I don't think there is much difference in how you do it. The numbers are just plain ugly.
Jenna and Heidi together have $60. Jenna has $9 more than twice Heidi’s amount. How much money does each have?
Jenna has $43 and Heidi has $17.
Step-by-step explanation:
Total amount = $60
Let,
Amount of Jenna = x
Amount of Heidi = y
According to given statement;
x+y=60 Eqn 1
x=2y+9 Eqn 2
Putting value of Eqn 2 in Eqn 1;
[tex](2y+9)+y=60\\2y+9+y=60\\3y=60-9\\3y=51[/tex]
Dividing both sides by 3,
[tex]\frac{3y}{3}=\frac{51}{3}\\y=17\\[/tex]
Putting y=17 in Eqn 2
[tex]x=2(17)+9\\x=34+9\\x=43[/tex]
Jenna has $43 and Heidi has $17.
Keywords: linear equations, substitution method
Learn more about substitution method at:
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I need help with question 10 (math work is about adding fractions with putting them in simplest form)
Answer: The answer is equivalent fractions.
Step-by-step explanation:
I hope this helped you! :D
Belle the cat naps 56 hours per week during daylight hours how many hours each day does bell nap? Write a division sentence with a blank for the missing number and solve
Answer: Its 8 hours a day.
56/7=8hours
solve the problems
A) X/840 = 1/21
B) 14/X = 16/20
Answer:
Step-by-step explanation:
A) x/840=1/21
x=(1/21)*840=840/21=40
x=40
------------------
B) 14/x=16/20
simplify 16/20 into 4/5
14/x=4/5
x=14/(4/5)=(14/1)(5/4)=70/4
simplify
x=35/2
order of operations with integers:
Please include steps:
- 5 x 6 -7
Answer:
-37
Step-by-step explanation:
-5(6) - 7
= -30-7
= -37
Hope this helps!
Answer:
-37.
Step-by-step explanation:
The order of operations is given by PEDMAS.
ParenthesesExponentsDivideMultiplyAddSubtract.
- 5 x 6 - 7:
Multiplication is done before Subtraction:
= -30 - 7
= -37.
Help!
What is the area of triangle with a base of 5 1/2 cm and a height of 3 1/2 cm?
Answer:19.25
Step-by-step explanation:
Answer:
9⅝cm²
Step-by-step explanation:
So the formula is
A=1/2bh
A=1/2(5 1/2)(3 1/2)
Turn to improper so it'll be easier
A=1/2(11/2)(7/2)
A=11/4(7/2)
A=77/8
a=9 5/8 cm²
your welcome
x + y = 75
10x + y = 48
Can someone help me?
Final answer:
The system of linear equations x + y = 75 and 10x + y = 48 is solved using the elimination method, resulting in the solution x = 3 and y = 72.
Explanation:
The student is given a system of two linear equations:
x + y = 7510x + y = 48To solve this system, we can use the method of elimination or substitution. Here, elimination appears to be the more straightforward method. We'll subtract the second equation from the first to eliminate the variable y, as they both have the same coefficient in y. Subtracting the second equation from the first gives us:
9x = 27
Solving for x, we find:
x = 27 / 9 = 3
Now that we have the value for x, we can substitute it back into either of the original equations to find the value for y. Substituting into the first equation:
3 + y = 75 => y = 75 - 3 => y = 72
So the solution to the system is x = 3 and y = 72. This method remains effective even with the advent of computer algebra methods and Mathcad.
What’s the answer for
8x+20=11x-31
Answer:
x=17
Step-by-step explanation:
8*17=136+20=156
11*17=187-31=156
156=156
Jack is 4 times as old as Lacy. 5 years from now the sun of their age will 70. How old are they now?
Answer:
Lacy is 14 and Jack is 56
Step-by-step explanation:
2 docters is ---- % of 25 docters
Answer:
8 percent
Step-by-step explanation:
When you're trying to find the percentage, first, you divide what you're trying to find over the total amount.
2/25.
What you get from this is 0.08. However, this is a decimal, not a percent. When converting from decimal to percent, you multiply the decimal by 100 to get 8 percent.
Answer:
8%
Step-by-step explanation:
2/25=8/100=0.08=8%
Let f(x) = 3/4 x
Let g(x) = (3/4)x – 6
Which statement describes the graph of g(x) with respect to the graph of f(x)?
g(x) is translated 6 units right from
f(x).
g(x) is translated 6 units left from
f(x).
g(x) is translated 6 units down from
f(x)
g(x) is translated 6 units up from
f(x)
Answer:
g(x) is translated six units down from f(x).
Step-by-step explanation:
f(x ± k) is for a horizontal translation. So that rules out the first two.
f(x) ± k is a vertical translation. In this case, a negative number means it's moving down and a positive means it's moving up. Because we have a negative (in other words subtracting) we move line on the graph down.
The best description of the graph of g (x) with respect to the graph of
f (x) will be;
''g (x) is translated 6 units down from f (x)''
What is Translation?
A transformation that occurs when a figure is moved from one location to another location without changing its size or shape is called translation.
Given that;
The functions are,
⇒ f (x) = 3/4 x
And, g(x) = (3/4)x - 6
Now,
Since, We know that;
The function f (x) after the translation 'a' unit down, so we get the new function,
⇒ g (x) = f (x) - a
Here, The function g (x) is translation of f (x).
Thus, The best description of the graph of g (x) with respect to the graph of f (x) will be;
''g (x) is translated 6 units down from f (x)''
Therefore, The best description of the graph of g (x) with respect to the graph of f (x) will be;
''g (x) is translated 6 units down from f (x)''.
Learn more about the translation visit:
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does this sum converge: show steps
Answer:
Yes
Step-by-step explanation:
[tex]\sum_{n=1}^{\infty} e^{-\sqrt{n} } \\\sum_{n=1}^{\infty} (\frac{1}{e})^{\sqrt{n} }[/tex]
If we say u = √n, then:
[tex]\sum_{u=1}^{\infty} (\frac{1}{e})^{u}[/tex]
This is a geometric series. Since |1/e| < 1, the series converges.
A baby flower is 2 inches tall. It is growing at a rate of 3 inches every month. Write an equation that represents that situation.(algebra) helppppppppppppp!!!!!
The equation would be y = 3x+2
Here's an explanation:
Let y represent the length of the baby flower in total, and let x represent the number of months that have passed. Since the flower grows at a rate of 3 inches every month, then for x number of months, it would grow 3 times x, which is 3x. The problem also tell us that the flower is already 2 inches tall, which now makes it 3x+2. So the total length is equal to 3x + 2 inches, so the equation would be y=3x+2
Solve the rational equation x divided by 6 equals x squared divided by quantity x minus 1 end quantity, and check for extraneous solutions.
Answer:
Solution: [tex]x=-\frac{1}{5}[/tex],[tex]x=0[/tex]
Step-by-step explanation:
Given:
The rational equation to solve is given as:
[tex]\frac{x}{6}=\frac{x^2}{x-1}[/tex]
Doing cross product, we get:
[tex]x\times (x-1)=6\times x^2\\x^2-x=6x^2\\\textrm{Bringing all variables to the right side, we get:}\\6x^2-x^2+x=0\\5x^2+x=0\\x(5x+1)=0\\x=0\ or\ 5x+1=0\\x=0\ or\ x=-\frac{1}{5}[/tex]
Now, for [tex]x=0[/tex], the rational equation is equal to 0. So, [tex]x=0[/tex] is a solution.
Also, [tex]x=-\frac{1}{5}[/tex] is also a solution.
So, no extraneous solution.
-2(x+2)=-12 .............
Answer:
x=4
Step-by-step explanation:
-2(x+2)=-12
x+2=-12/-2
x+2=6
x=6-2
x=4
2y=5x+8 in standard form
Answer:
5x-2y + 8 =0
Step-by-step explanation:
2y=5x+8
5x-2y + 8 =0
Which of the following matches the graph?
Y=3/4x
Y=1/4x
Y=1/3x
Y=4x
Y=4/3
Answer:
B) y=1/4x
Step-by-step explanation:
Because the slope of this graph is 1/4. You can find this because slope=rise/run. On the graph, it's always 1 upward and 4 rightwards, therefore, the slope is 1/4. Also, the y-intercept is 0 in this case.
What is the total number of funny numbers between 30 and 60
Answer:
Not exactly sure what "funny numbers" are but I'm assuming you mean prime numbers? In that case there are a total of 7 prime numbers between 30 and 60.
Step-by-step explanation:
Answer:
42 but with no 0
Mark is slicing 4 members of his family each person will get 1/6 of the tomato what fraction of the tomato will mark slice use fraction strips
Answer:
Step-by-step explanation:
Final answer:
The fraction of the tomato Mark will slice is [tex]\frac{1}{6}[/tex]. Using fraction strips, 4 members each getting [tex]\frac{1}{6}[/tex] of the tomato equals [tex]\frac{2}{3}[/tex] of the total tomato.
Explanation:
The fraction of the tomato Mark will slice is [tex]\frac{1}{6}[/tex].
We can represent this using fraction strips. If Mark slices 4 members of his family, each getting [tex]\frac{1}{6}[/tex] of the tomato, we can visually represent this as Dividing the fraction strip into 6 equal parts. Shade in 1 part of the strip, representing [tex]\frac{1}{6}[/tex] of the tomato.
If Mark slices 4 members, he will slice 4 times [tex]\frac{1}{6}[/tex], which equals [tex]\frac{4}{6}[/tex] or [tex]\frac{2}{3}[/tex] of the tomato.
Write the equation of a line that is perpendicular to y =3x-2 and that passes through the point(-9,5)
Answer:
y = -1/3x + 8
Step-by-step explanation:
If two lines are perpendicular, the signs of the slope must be opposite and the slopes are reciprocals.
(basically if one is say -2/3, the other is 3/2. just flip it upside down)
So this slope is 3, so the new slope should be -1/3
The equation is now y = -1/3x + b
To find b, substitute (-9,5) in the equation
y = -1/3x + b
5 = -1/3(9) + b
5 = -3 + b
8 = b
So the equation is y = -1/3x + b
Answer:
y = -1/3x + 2
Step-by-step explanation:
I dont know who verified the other guy but he is wrong
ABCE is a trapet AD is parallel to BC DE=4cm area of ABCE=60cm?area of ABCD=48cm work out the values of f and g show all your working please be quick thank youuuu
Answer:
The value are
f = 6 cm
g = 8 cm
Step-by-step explanation:
Given:
ABCE is Trapezium
AD || BC
AD = BC = f
CD = g
Area of ABCE = 60 cm²
Area of ABCD = 48 cm²
To Find :
f = ?
g = ?
Solution:
In the figure ∠ C = 90° and AD || BC
∴ ∠ D = 90° .....Corresponding angles are equal
∴ ABCD is RECTANGLE With Length = f and Breadth = g
∴ [tex]\textrm{Area of Rectangle}=Length\times Breadth\\\textrm{Area of Rectangle}=f\times g\\[/tex]
[tex]\textrm{Area of Triangle AED}= \textrm{Area of Trapezium ABCE}-\textrm{Area of Rectangle ABCD}\\=60-48\\=12\ cm^{2} \\\therefore \textrm{Area of Triangle AED} = \frac{1}{2}\times AD\times DE\\12 =\frac{1}{2}\times f\times 4\\ f=\frac{24}{4}\\\therefore f= 6\ cm[/tex]
Now,
∴ [tex]\textrm{Area of Rectangle}=Length\times Breadth\\\textrm{Area of Rectangle}=f\times g\\[/tex]
[tex]\therefore 48 = f\times g\\48= 6\times g\\\therefore g =\frac{48}{6}\\ g=8\ cm[/tex]
The value are
f = 6 cm
g = 8 cm
Which set of numbers is the most reasonable to describe a person’s hat size?
Answer:
Rational Numbers
Step-by-step explanation:
A hat size cannot be integers as that would include negative numbers. For example a person who's hat size is 7 & 5/8 which would make the answer 7.625 which is a rational number.
Answer:
"Rational numbers" is the set of numbers among the choices that are given in question that is the most reasonable to describe a person's hat size.
Step-by-step explanation:
rational numbers are by far the most reasonable description. The circumference of the human head certainly is not always an integer or whole number.
For this item, i go with letter D. Rational. The hat size cannot be integers as it includes negative numbers. For instance the person's hat size is 7 + 5/8 which leads to an answer of 7.625. That is a rational number.
hope this helps you
if this is correct can you give me the brainliest
simplify these expressions
9(w+6)+4 f+4(f-2)
2m+7+9m 3.1(p-2.7)
5(3+m)-7
Answer:
9w+8f+46, 11m+7, 3.1p-8.37, 8+5m.
Step-by-step explanation:
9(w+6)+4f+4(f-2)
9w+54+4f+4f-8
9w+54-8+8f
9w+46+8f
---------------------
2m+7+9m=2m+9m+7=11m+7
-------------------------------------------
3.1(p-2.7)=3.1p-8.37
---------------------------
5(3+m)-7=15+5m-7=8+5m
i need 7-12 please!!!
Answer:
number 7 is y= [tex]\frac{-ax+c}{b}[/tex]
Step-by-step explanation:
If mr. Brown and his son together had 220 dollars, and mr. Brown had 10 times as much as his son how much money did each have?
Answer:
the son had $20 and the father had $200
Step-by-step explanation:
20 x 10 = 200
200 + 20 = 220
Cant be 22, Ah, 20!
Because 20 Times 10 is 200, and you add the 20 and you get 220!
This pair of figures is similar. Find the missing side. Help ASAP!!
Answer:
The missing side “x” is 2.
Step-by-step explanation:
From the given figure, we came to know that these are “similar triangles” where the ratio of the one “corresponding side” of a triangle is equal to the other two “corresponding sides” of a triangle.
Let the triangles be ∆ABC and ∆DEF
[tex]\Delta A B C \sim \Delta D E F[/tex]
From similarity of triangle rule the sides,
[tex]\frac{A B}{D E}=\frac{B C}{E F}[/tex]
Given that,
AB = x, DE = 8, BC = 4 and EF = 16
[tex]\text { Substitute the values in } \frac{A B}{D E}=\frac{B C}{E F} \text { to find }^{u} \mathrm{x}^{\prime \prime}[/tex]
[tex]\frac{x}{8}=\frac{4}{16}[/tex]
[tex]\frac{x}{8}=\frac{1}{4}[/tex]
[tex]x=\frac{8}{4}[/tex]
x = 2
Therefore, we found the missing side x = 2