Answers
Answer:
i) The probability of getting 50 cent coin is 5/18, or approximately 28%
ii) To scale the numbers up to let us have 65 fifty cent coins, there would be a total of 234 coins
Step-by-step explanation:
We are told the probability of choosing ten and 20 cent coins, and from that we can work out the probability for the 50 cent coin. All we need to do is add up the other two probabilities and subtract them from 1.
[tex]p = 1 - (\frac{1}{3} + \frac{7}{18})\\p = 1 - (\frac{6}{18} + \frac{7}{18})\\p = 1 - \frac{13}{18}\\p = \frac{5}{18}\\[/tex]
So the chance of getting a 50 cent coin is five eighteenths, or approximately 28%
For the second question We are asked to find the total number of coins if there are 65 fifty cent coins. (I can't see the text below that, but presumably it's saying that the ratios will stay the same).
We can solve this by comparing the two ratios, with x as the total, and solving for x:
[tex]\frac{5}{18} = \frac{65}{x}\\5x = 65 * 18\\x = 13 * 18\\x = 234[/tex]
So to keep the same ratios and have 65 fifty cent coins, we would need a total of 234 coins.
Related Questions
2(x+1)= - 8x +12+ 10x -10
Answers
Answer:
all real numbers
Step-by-step explanation:
distribute the 2
2x+2=-8x+12+10x-10
combine like terms on each side
2x+2=2x+2
0=0
all real numbers
A grocery store sells tangerines in 25kg bags. A customer bought 4 kg of tangerines for a school party. How many bags did he buy? (2 points) A. Write a multiplication equation and division equation to represent the situation.
Answers
Answer:
x = 4/25
Step-by-step explanation
Amount of tangerines in bags sold = 25kg
If a customer bought 4kg of tangerines, the number of bags he bought is expressed as x;
4 kg = x bags
25 kg = 1 bag
Cross multiply
25 x = 4 * 1
25x = 4
Divide both sides by 25
25x/25 = 4/25
x = 4/25
Hence the required equation is x = 4/25
Answer:
So if you are in middle school like me, they are asking for an equation answer, and that equation is 4 divided by 2/5 = _ and _ x 2/5 = 4
Step-by-step explanation:
2 tickets cost $14. How many tickets can you buy with $63
Answers
Answer:
9 tickets
Step-by-step explanation:
If two tickets cost 14 dollars, then each ticket will cost 7 dollars
63/7=9
You can buy 9 tickets
Answer:
You can buy about 31 tickets
Step-by-step explanation:
Write the equation 3x+2=4x² in standard form.
Identify the values of a,b, and c that you would use to solve the equation using the Quadratic Formula.
Answers
Answer:
Write the Equation in Standard Form 3x+2=4x^2. 3x+2=4x2 3 x + 2 = 4 x 2. To write an equation in standard form, move each term to the left side of the equation ...
Missing: 4x² | Must include: 4x²
Step-by-step explanation:
Write the Equation in Standard Form 3x+2=4x^2. 3x+2=4x2 3 x + 2 = 4 x 2. To write an equation in standard form, move each term to the left side of the equation ...
Missing: 4x² | Must include: 4x²
PLEASE HELP ME WITH THIS QUESTION I NEEED HELP ASAPm
Answers
Answer:
one pound is 4 dollars and 12 pounds would cost 48 dollars
What is the slope of the line?
Answers
Answer:
3
Step-by-step explanation:
down 3 over 1 3/1 or 3.
Hope this helps plz hit the crown ;D
someone help 6th grade math i will give brainliest
Answers
Answer:
The first on is 64.
The second one is -64.
The last one is 10,000.
Step-by-step explanation:
I hope this helps! :)
Find the prime factor of the number 3825.
Answers
Answer:
the answer is 3×3×5×5×17=3825 use prime factorization
Which of the following functions maps 3 to -5?
O f(x) = 4 – x2
O f(x) = x-5
O f(x) = -x + 2
O f(x) = x + 8
Answers
Answer: A
Step-by-step explanation:
An item has a listed price of $45. If the sales tax rate is 5%, how much is the sales tax (in dollars)?
Answers
Answer:
$42.75
Step-by-step explanation:
A line has the equation y = -1/2 + 3. A second line is parallel to the first. What is the slope of the parallel line?
Answers
Answer:
m = -1/2
Step-by-step explanation:
parallel lines always have the same slope
If A = 50 degrees, B = 62 degrees, and a = 4, find b.
Round to the nearest tenth.
Answers
=================================================
Work Shown:
Use the law of sines
b/sin(B) = a/sin(A)
b/sin(62) = 4/sin(50)
b = sin(62)*4/sin(50)
b = 4.61042489526572
b = 4.6
Make sure your calculator is in degree mode.
Find the component form of the resultant vector.
f = (10,5)
v = (-3,-10)
Find: -f +v
Answers
Answer:
(-f+v) = -13i-15j
Step-by-step explanation:
Given that,
Vector f = (10,5) = 10i+5j
Vector v = (-3,-10) = -3i-10j
We need to find (-f+v).
Let x = (-f+v)
Plug all the values,
x = [-(10i+5j) + -3i-10j]
= (-10i-3i)+(-5j-10j)
= -13i-15j
Hence, (-f+v) = -13i-15j
If Clare earns $75 the next week from delivering newspapers and deposits it in her account, what will her account balance be then? her account balance is $-50 to start out with
Answers
Answer:
25
Step-by-step explanation:
because 75 - 50 = 25
The Clare account balance after the deposit of $75 will be $25.
What is subtraction?To subtract in mathematics is to take something away from a group or a number of objects.
In other meaning, subtraction is a mathematical operation such that two values are going to subtract and give a resultant value.
As per the given,
The account balance initial = -$50
The amount of deposition = $75
Total amount = -$50 + $75
⇒ $25
Hence"The Clare account balance after the deposit of $75 will be $25".
For more about subtraction,
https://brainly.com/question/1927340
#SPJ2
The family built a house that has a length and width in a ratio of 5: 4, what is the length and width of the house if the total area of two identical floors is 160m2
Answers
I hope it will help u , please Brain -list the question
Step-by-step explanation:As given that
L:W=5:4
L/W=5/4
L=(5/4)W
hence we also know that
Area of rectangle= L*W
As given A=160m2
putt the value of A and L=(5/4)W in above equation ,
hence 160 = (5/4)W * W
W^2 = 160*4/5
W^2 = 32*4
W^2=128
taking square root
W= +_ 11.3
but length can't be negative so we take positive value of W
W=11.3 m
Now for L putt in above equation,
L=5/4 * 11.3 = 14.12 m
What do you notice about dividing numbers with the same base?
Answers
Answer:
it's the one all the way to the right
you are making sandwiches for a mountain hike.each sandwich uses 3 slices of bread,and you want to prepare 2 sandwiches for each person going on the hike. how many slices of bread will you need if if 6 people are going on the hike
Answers
Answer:
36
Step-by-step explanation:
3*2*6
f(x) = 2x – 4/?
What are the domain and range
Answers
Answer:
domain
Step-by-step explanation:
range
A) The probability distribution below is for the number of radios sold at Kisumu City Sound Store in a week. Radios(X) 0 1 2 3 4 5 P(X=x) 0.03 0.20 0.50 0.20 0.05 0.02 Determine: i. The expected weekly radio sales (3 Marks)
Answers
Answer:
2.1
Step-by-step explanation:
Given :
Radios(X):_0 ___ 1 ___2 ___ 3 ___4 ___5
P(X=x) : 0.03 0.20 0.50 0.20 0.05 0.02
The expected weekly radio sales :
Σ(X) * p(x) : (0*0.03) + (1*0.20) + (2*0.50) + (3*0.20) + (4*0.05) + (5* 0.02) = 2.1
Hence, expected weekly radio sale = 2.1
870 g of brass contains 40 percent zinic and the rest is copper.find the mass of zinic and copper in the alloy
Answers
Step-by-step explanation:
Mass of Zinc = 870g * (40/100) = 348g.
Mass of Copper = 870g - 348g = 522g.
Mass of zinc = 40/100*870 = 348
Mass of Copper = 60/100*870 = 522
Therefore, the mass of zinic in the alloy is 348 and the mass of copper in the alloy is 522.
Which number is the smallest?
33/2, 555/3, 7/1000, 100, 50/1111, 150
A. 33/2
B. 555/3
C. 100
D. 50/1111
E. 7/1000
F. 150
5/3, 6/5, .9, 1, 1.3, 7/5
A. 5/3
B. 1.3
C. 7/5
D. .9
E. 6/5
F. 1
10.34, 500/50, 10.4, 1000/100, 2000/250, 4000/400
A. 4000/400
B. 500/50
C. 10.34
D. 1000/100
E. 2000/250
F. 10.4
Answers
Answer:
E D C are the answers for the questions
Which of the following may be used as reasons in a two-column proof? Select all that apply.
Answers
Answer:
definitions, theorems, postulates, properties, and "given"
Step-by-step explanation:
Definitions, theorems, postulates, properties, and statements that are given are all either assumed to be true or proven to be true, and can be cited in a two-column proof.
Quotes and opinions are not statements of fact, and cannot be used in proofs.
Which expression best estimates. -18 1/4 ÷ 2 2/3 A. 18÷3 B. -18÷3 C.-18÷(-3) D. 18÷(-3)
Answers
Answer:
the amswer is d hope this helps
Of the 75 cars that Lindsay saw pass on the highway, 16% had an out-of-state license plate. How many had an out-of-state license plate?
Answers
Answer:
12
Step-by-step explanation:
75 * 0.16 = 12
Answer:
12 cars
Step-by-step explanation:
Find an equation for the line perpendicular to 4 x + 12 y = 96 and goes through the point ( − 3 , 4 ) . Write your answer in the form y = m x + b .
Answers
Answer:
y= 3/4x + 6.4
Step-by-step explanation:
If your teacher asks why it's so specific tell them you used desmos <3
the perimeter of a rectangle is (8x + 7y) feet, give two possible dimensions of the rectangle
please help ??
Answers
Answer:
Two possible dimensions of the rectangle are 4x and 7/2 y.
Step-by-step explanation:
The Perimeter of a Rectangle
It's given the perimeter of a rectangle is
P = 8x + 7y
The formula to calculate the perimeter of a rectangle of dimensions L and W is:
P = 2W + 2L
Equating term by term, we can guess two possible dimensions of the rectangle:
2W = 8x
Dividing by 2:
W = 4x
And also:
2L = 7y
Dividing by 2:
L = 7/2 y
Thus, two possible dimensions of the rectangle are 4x and 7/2 y.
Jennifer's grade on a math quiz was a 85%. There were 20 questions on the quiz.
Answers
Answer:
She got 16/20 on the test
Step-by-step explanation:
Just divide 16/20 and the answer is 80%
What is the coefficient of y^3 in the expansion of (y+3) raised to the 4th power?
A. 1
B. 6
C. 4
D. 3
Answers
Solve -17 =
7 / 3 for x.
Answers
Hurryyyyyy giving brainliest
Solve for h.
h/4=6
Answers
Answer:
H equals 24
24/4 equals 6
Answer:
h = 24
Step-by-step explanation:
multiply both sides
h/4=6
4 x h/4 = 4 x 6
reduce multiply
and the solution is h = 24