Answer:
A
Step-by-step explanation:
22 successes out of a group of 40 means 22/40 were good. Now, simplify 22/40. Both can be divided by 2.
22/2 = 11
40/2 = 20
Now you have 11/20. Put this in decimal form and you have 0.55
Option A answer is 0.55
What is the proportion of a sample?The proportion of a sample is the ratio of the number of successes or defeats to the total size of the sample, it is used for understanding which trend is more followed and also has many uses in the real world.
The solution to the given problemThe size of the sample is 40.
There are 22 successes in the sample.
To find the proportion of success we have to find the ratio of 22 and 40 which is 11:20, and in numerical terms 0.55
Hence option A is correct, the proportion is 0.55
Learn more about proportion here
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need help fast not sure how to get the answer
9514 1404 393
Answer:
x = 5y = 52Step-by-step explanation:
In any isosceles triangle, the base angles have the same measure:
y° = 52°
In any triangle the sum of angles is 180°.
52° +(14x +6)° +52° = 180°
14x = 70 . . . . . . . . subtract 110°, divide by °
x = 70/14 = 5 . . . . divide by the coefficient of x
The values of x and y are 5 and 52, respectively.
Mahmoud is making a drink from lemonade, orange juice and ginger in the
ratio 40:9:1. He has 4.5 litres of orange juice and uses it all. How much of
the other ingredients does he use? *
The marked price of fan is Rs.1250, and the shopkeeper allows a discount of 6% on it . Find the selling price of the fan .
Given:;
Marked price of a fan = Rs. 1250.
Discount percent = 6%.
To find:
The selling price of the fan.
Solution:
We have,
Marked price of a fan = Rs. 1250.
Discount percent= 6%.
So,
Selling price = Marked price - Discount
[tex]S.P.=1250-\dfrac{6}{100}\times 1250[/tex]
[tex]S.P.=1250-75[/tex]
[tex]S.P.=1175[/tex]
Therefore, the selling price of the fan is Rs. 1175.
A cafeteria worker is cutting apple wedges for student lunches.Each student lunch requires two apple wedges
The number of apple wedges that the cateteria worker needs to prepare is a linear function of the number of student lunches. Which statement correctly describes the domain of this function?
A numbers
B all real numbers
C all whole numbers
D all even whole numbers
Solve 0=x^2 +6x+13 by completing the square
Answer:
No real solutions
Step-by-step explanation:
0=x^2+6x+13
Step 1: Subtract x^2 from both sides.
0−x^2=x^2+6x+13−x^2
−x^2=6x+13
Step 2: Subtract 6x from both sides.
−x^2−6x=6x+13−6x
−x^2−6x=13
Step 3: Since the coefficient of -x^2 is -1, divide both sides by -1.
−x^2−6x/−1 = 13/−1
x^2+6x=−13
Step 4: The coefficient of 6x is 6. Let b=6.
Then we need to add (b/2)^2=9 to both sides to complete the square.
Add 9 to both sides.
x^2+6x+9=−13+9
x^2+6x+9=−4
Step 5: Factor left side.
(x+3^)2=−4
Step 6: Take square root.
x+3=±√−4
Step 7: Add -3 to both sides.
x+3+−3=−3±√−4
x=−3±√−4
Suppose y varies directly with x, and y = 60 when x = 12. What is y when x is 20?
Step-by-step explanation:
y = kx, where k is a real constant.
When x = 12, y = 60.
=> (60) = (12)k, k = 5.
Therefore when x = 20,
y = kx = (5)(20) = 100.
I will give BRAINIEST
A map has a scale of 2 inches = 20 kilometers. If the distance between two cities on the map is 10 inches, what is the actual distance between the cities?
a.
120 km
c.
100 km
b.
150 km
d.
10 km
Answer:
yes he is right its c. 100
Step-by-step explanation:
on edge2021
HELP I BEG U TUTORS which of the following is the solution for s in the system of equations shown below? r+2s=52
2r-s=4
5x +9= -29
and
5x = -20
Are they equivalent
Answer:
No.
Step-by-step explanation:
We can try to simplify this by making sure the first equation has only the 5x on one side.
[tex]5x+9 =-29[/tex]
Subtract 9 from both sides.
[tex]5x = -38[/tex]
[tex]5x = -38[/tex] ≠ [tex]5x = -20[/tex]
They are not equal.
Please help I don’t understand it’s like angles and stuff picture above. 20 POINTS WILK MARK BRAINLEST FOR RIGHT ANSWERS ONLY
Since 6x - 44 and 88 degrees are the same (exterior angles), we can start off with the first equation, 6x - 44 = 88
6x - 44 = 88
+44 +44
6x = 132
÷6 ÷6
x = 22
same with the second problem (exterior angles are equal):
equation:
15x + 6 = 9x + 54
-6 -6
15x = 9x + 48
-9x -9x
6x = 48
÷6 ÷6
x = 8
Hope this helped! :D
Answer:
1. x=22
2. x=8
Step-by-step explanation:
1. Opposite exterior angles are congruent, so 6x-44=88. You would add 44 to both sides, making the equation 6x=132, and then divide both sides by 6 to get your answer of x=22.
2. Again, opposite exterior angles are congruent, so 15x+6=9x+54. You would subtract 9x from both sides, making the equation 6x+6=54, then subtract 6 from both sides, making the equation 6x=48, and then divide both sides by 6 to get your answer of x=8.
(hope this helps!)
The ratio of the surface area of two cubes is 49:81. Find the ratio of there volumes.
Answer:
343 : 729
Step-by-step explanation:
A cube is made up of 6 square faces. If each face has a side length of a, we can find the surface area of that cube with the formula [tex]A=6a^2[/tex], since we'll have 6 faces with area a². Let's call the edge length of the first cube a and the edge length of the second cube b. The ratio between their surface areas is then 6a² : 6b², or simply a² : b². If we compare this to our given ratio 49 : 81, we can see that a² = 49 and b² = 81, or, square rooting both equations, a = 7 and b = 9.
The volume of a cube with a side length a is a³, so the ratio between our cubes here must be a³ : b³. Using the values for a and b we just found, this ratio becomes 7³ : 9³, which we can simplify to 343 : 729.
Answer:
343 : 729
Step-by-step explanation:
If the ratio of the sides of a cube = a : b , then
ratio of areas = a² : b² and
ratio of volumes = a³ : b³
Given ratio of areas = 49 : 81, then
ratio of sides = [tex]\sqrt{49}[/tex] : [tex]\sqrt{81}[/tex] = 7 : 9 , so
ratio of volumes = 7³ : 9³ = 343 : 729
Brianna took a taxi from her house to the airport. The taxi company charged a pick-up fee of $4.30 plus $1.25 per mile. The total fare was $35.55, not including the tip. How many miles was the taxi ride?
Answer:
35.55-4.30=31.25
31.25/1.25= 25
total miles 25
Answer:
25
Step-by-step explanation:
sub 4.30 35.55 - 4.30 = 31.25
Divide 1.25 31.25/1.25 = 25
Final answer is 25
After dividing what you subtracted, you will successfully get your answer.
In a scale drawing, 3 inches represents 10 miles. How many inches
represent 35 miles?
Answer:
3.5
Step-by-step explanation:
Put the sentence in equation form Thirty-five more than a number is three hundred.
Answer:
35+x=300
Step-by-step explanation:
35 more would be 35 +, and then I added x in as the "number", and since it all adds up to 300, there would be the =300.
(hope this helps :P)
Is this correct?????
Answer:
No, its the second answer
Step-by-step explanation:
The independent variable is what can be controlled, the seller cannot control how many sales the bikes make. The dependent variable is what changes BECAUSE of the independent variable.
Answer:
Yes it is correct
Step-by-step explanation:
The sales depend on the number of bicycles sold.
simplify expression 7w+2w-6w,
9x-3x+2x, 8p+3p-p
Answer:
The answer is -4x - 6x^2 + x^2
Hoped this helped!
Find last year's salary if, after a 6% pay raise, thisyear's salary is 40810
Without computing, decide whether the value of each expression is much smaller than
1, close to 1, or much greater than 1.
a. 100 - 1000
b. 504 + 50-
C. 4.7-5.2
d. 2= 7335
Maddison hid 12 of her sister's birthday gifts around the house. If this was 15% of the gifts, how many total gifts did her sister have?
Answer:
80 gifts
Step-by-step explanation:
Maddison hid 12 of her sister's birthday gifts around the house. If this was 15% of the gifts, how many total gifts did her sister have?
Let the Total gifts that her sister has be represented by x
Hence:
15% of x = 12
15/100 × x = 12
15x /100 = 12
Cross Multiply
15x = 100 × 12
15x = 1200
x = 1200/15
x = 80 gifts
Hence, the total gifts her sister has is 80 gifts
Answer:
80 total gifts
Step-by-step explanation:
Step one:
given data
Maddison hid 12 of her sister's birthday gifts
we are told that 12 gift is 15% of the total gifts
let the total gifts be x
so
=15/100*x= 12
=0.15x= 12
divide both sides by 0.15
x= 12/0.15
x=80 total gifts
what is an equivalent expression to −56z+28
Answer:
(
2
z
−
1
)
Step-by-step explanation:
-56z:28
z equal to 28/56
please help me please will give brainliest to anyone who is right
show your work
Answer:
N = st
Step-by-step explanation:
N/s = t
so st = N
I would appreciate Brainliest
Answer:
The correct answer is B. N = st
Step-by-step explanation:
Step-by-step explanation:
1. Let's review the information given to us to answer the question correctly:
t = number of toothpicks received by each student
s = number of students
N = total number of students
2. Which equation can be used to find the total number of toothpicks, N, given out by the teacher for the project?
Total number of toothpicks for the project = number of toothpicks received by each student * number of students, replacing with the variables:
N = t * s = s * t
The correct answer is B. N = st
What is the solution to 3x+30+x=10+2x+5x+2?
The solution of the linear equation 3x + 30 + x = 10 + 2x + 5x + 2 will be 6.
What is the solution to the equation?The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.
A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.
The equation is given below.
3x + 30 + x = 10 + 2x + 5x + 2
Simplify the equation, then we have
3x + 30 + x = 10 + 2x + 5x + 2
4x + 30 = 7x + 12
3x = 18
x = 6
The solution of the linear equation 3x + 30 + x = 10 + 2x + 5x + 2 will be 6.
More about the solution of the equation link is given below.
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Helloooo please give the right answer :)
Answer:
9 feet
Step-by-step explanation:
3X3=9 feet therefore 3 yards is equal to 9 feet
List three different possible three letter combination the phone could show on the screen after Sam presses 364
Answer: DOG, FNH, and EMI.
Step-by-step explanation: Each number on a phone corresponds to letters.
Triangle XYZ at X(–6,1), Y(4,0), Z(1,3) is reflected across the y-axis. What are the new coordinates of the triangle?
Answer:
X(6, 1), Y(-4, 0), Z(-1, 3)
Step-by-step explanation:
When reflecting an image across the y-axis, (i.e, across a vertical line at the position x = 0), All you need to do is negate the x coordinate of each point, so:
(-6, 1) becomes (6, 1)
(4, 0) becomes (-4, 0)
(1, 3) becomes (-1, 3)
Answer:
(6,1) (-4,0) (-1,3)
Step-by-step explanation:
Help me with this pls
Andrew bought a shirt and a pair of pants that cost $3675. The shirt costs double the pants. How much do they each cost?
Answer: $7350
Step-by-step explanation:
$3675 x 2 = $7350
Elkan played 9 songs from his playlist. Ryan played 3 more songs than Elkan. How many songs did Ryan play?
Answer:
12
Step-by-step explanation: Ryan played 12 songs because 9+3=12
The original cost of a comic book was $3.95. The store markup on the comic book was 20%. What is the store's price for the comic book?
Answer:
$3.16
Step-by-step explanation:
a box of dried fruit has 51 calories in 3 servings. how many calories are in 1 serving?
Answer:
17 calories
Step-by-step explanation:
