Answer:
28%
Step-by-step explanation:
Percentage mark up = (new - original) / original * 100 %
new = 704
original = 550
Substituting these values in
Percentage mark up = (704 - 550) / 550 * 100 %
=154/550 * 100%
=.28*100%
28%
A pilot whale is swimming at 20 feet below sea level. He dives to a depth of 3290 feet in 15 minutes. What is the change in depth per minute?
Answer:
218 feet per minute
Step-by-step explanation:
To find this, first subtract the initial amount (20) from the depth he soon reaches (3290). This will leave you with the amount of 3270 which is the distance the pilot whale went.
To find the feet per minute, divide by new depth by 15 in order to get the final answer of 218 feet per minute.
Hope this helps!
find the center and the radius of the circle with the equation x^2+6x+y^2+4y+12=0
Answer:
(x + 3)² + (y+ 2)² = 1²
Step-by-step explanation:
The standard form for the equation of a circle with centre (a, b) and radius r is
(x - a)² + (y - b)² = r²
x² + 6x + y² + 4y + 12 = 0
Step 1. Subtract the constant from each side
x² + 6x + y² + 4y = -12
Step 2. Complete the squares for x and y
Square half the coefficients of x and y
(x² + 6x + 3²) + (y² + 4y + 2²) = -12 + 3² + 2²
Step 3. Write the lhs as squares of binomials
(x + 3)² + (y+ 2)² = -12 + 3² + 2²
Step 4. Convert the rhs to a square
(x + 3)² + (y+ 2)² = -12 + 9 + 4
(x + 3)² + (y+ 2)² = 1
(x + 3)² + (y+ 2)² = 1²
The graph below shows that this is the equation for a circle with
centre (-3, -2) and radius 1.
The center and radius of the given circle are respectively; (-3, -2) and 1
What is the radius of the circle?The standard form for the equation of a circle with it's centre coordinate (a, b) and radius r is given as;
(x - a)² + (y - b)² = r²
Now, we are given the circle equation to be; x² + 6x + y² + 4y + 12 = 0
Let us subtract 12 from both sides to leave only the variables on the left side;
x² + 6x + y² + 4y + 12 - 12 = 0 - 12
x² + 6x + y² + 4y = -12
Now let us complete the squares for variable x and y;
Square half the coefficients of x and y and add to both the x, y and constant to get;
(x² + 6x + 3²) + (y² + 4y + 2²) = -12 + 3² + 2²
(x² + 6x + 3²) + (y² + 4y + 2²) = -12 + 9 + 4
(x² + 6x + 3²) + (y² + 4y + 2²) = 1
Write the left hand side as squares of binomial to get;
(x + 3)² + (y+ 2)² = 1
This can be also written as;
(x + 3)² + (y+ 2)² = 1²
Thus, from the general standard form of equation of a circle, we can say that;
centre is at (-3, -2) and radius is 1.
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5(a+3)=8a
How can I solve this?
Simplify the left side of the equation using the distributive property.
5(a+3) = 5*a + 5*3 = 5a + 15
Now the equation looks like this: 5a + 15 = 8a
Next we want to put all the variables on the same side.
In this case, the easiest way to do this is subtract 5a from both sides.
5a + 15 - 5a = 8a - 5a
15 = 3a
In order to isolate a, divide both sides by 3
15/3 = 3a/3
5 = a
Answer: a = 5What would it be answer for 23 points
Answer:
t≤ 2
Step-by-step explanation:
The temperature must be 2F or less
t <=2
t≤ 2
Mark is making 10 kites.he uses 5yards of ribbon for each kite.he has already made 2 of the kites.how many yards of ribbon will mark need to make the rest of the kites?
Answer:
40 yards
Step-by-step explanation:
8×5≈40
PLEASE HELP AS FAST AS POSSIBLE!!!!!!!
Find the appropriate answer for each word problem.
a. A group of twelve art students are visiting a local art museum for a field trip. The total cost of admission for the students is $125. What is the cost of admission for each student?
b. The school van can carry twelve passengers at a time. What is the least number of trips the van must make in order to bring 125 passengers to the same location?
c. Charlotte and her mother baked 125 cookies to give as Christmas gifts to their neighbors. If they plan to give a dozen cookies to each neighbor, how many neighbors will receive a gift?
d. Nicholas and Elaine are planning to serve cheesecake for dessert at their wedding and have purchased twelve cheesecakes. If the cheesecakes are divided evenly among the 125 wedding guests, how much cheesecake will each guest receive?
HELP AND PLS SHOW WORK.
the number of chocolate chips in an 18- ounce bag of Chips Ahoy! chocolate chip cookies is approximately normally distributed with a mean of 1262 chips and a standard deviationof 118 chips, according to a study by cadets of the U.S. Air Force Academy.
Answer: the answer is (A)
Step-by-step explanation:
Choose the equivalent system of linear equations that will produce the same solution as the one given below.
4x − y = −11
2x + 3y = 5
Option 1)−4x − 9y = −21
−10y = −30
Option 2)4x + 3y = 5
2y = −6
Option 3)7x − 3y = −11
9x = −6
Option 4)12x − 3y = −33
14x = −28
Answer:
Option 4
Step-by-step explanation:
Firstly, we need to make the two x's or the two y numbers the same. Lets multiply the second equation by 2:
(2x + 3y = 5 ) * 2 =
4x + 6y = 10
Now, subtract the second equation from the first one:
(4x - y = -11) - (4x + 6y = 10)
4x - 4x = 0
-y - 6y = -7y
-11 - 10 = -21
-7y = -21
Divide both sides by -7:
y = 3
Plug 3 into the first equation as y:
4x - 3 = -11
4x = -11 + 3
4x = -8
x = -2
So x = -2 and y = 3. We need to find one of the options that equals this.
-4x - 9y = -21
-10y = -30
40x - 90y = -210
-90y = -270
40x - 0 = 40x
-90y - - 90y = -90 + 90 = 0y
-210 - -270 = -210 + 270 = 60
40x = 60
x = 1.5
We already know this isn't equivalent because the x value is not the x value of the given equation.
4x + 3y = 5
2y = -6
_______
8x + 6y = 10
6y = -18
8x - 0 = 8x
6y - 6y = 0
10 - -18 = 10 + 18 = 28
8x = 28
x = 3.5
So we know this isn't equivalent because again, the x value isn't the same as the given equation.
7x - 3y = -11
9x = -6
-----------
63x - 27y = -99
63x = -42
----------------
63x - 63x = 0
-27y - 0 = -27y
-99 - - 42 = -99 + 42 = -57
-27y = -57
-9y = -19
9y = 19
y = 19/9
So we know this one isn't equivalent as the y value isn't the same as the given equation.
12x - 3y = -33
14x = -28
x = -28/14 = -2
12(-2) - 3y = -33
-24 - 3y = -33
-3y = -33 + 24
-3y = -9
y = 9/3
y = 3
So x = -2 and y = -3 which is the same as the first equation.
Final answer:
Option 4 is the correct equivalent system for the given linear equations because you can derive the system in Option 4 by multiplying the original system's equations by constants and rearranging them.
Explanation:
We are given the system of linear equations:
4x − y = −112x + 3y = 5To find an equivalent system, each equation from the new system should be derivable from the original system. A common method is to multiply one or both of the original equations by a constant to see if it matches one of the offered options.
Option 4 is the correct choice. Multiplying the first original equation by 3, we get:
(4x − y) ⋅ 3 = −11 ⋅ 312x − 3y = −33And multiplying the second original equation by 7 and rearranging yields:
(2x + 3y) ⋅ 7 = 5 ⋅ 714x + 21y = 3514x = 35 − 21yBut since y = 0 (from 2y = −6, which implies y = −3),14x = 35 − 21(−3)14x = −28The other options cannot be derived from the original system through multiplication or other allowed operations, hence they are not equivalent.
What is the slant height of the pyramid to the nearest tenth?
A.) 13.9 mm
B.) 15.5 mm
C.) 12.5 mm
D.) 19.0 mm
check the picture below.
Answer:
(C) 12.5mm
Step-by-step explanation:
It is given that a pyramid having slant height AC is to be determined. From the given information, we get
AB=12mm, BC=3.5mm and we have to find out the value of AC.
Thus, using the Pythagoras theorem, we have
[tex](AC)^2=(AB)^2+(BC)^2[/tex]
Substituting the given values, we have
[tex](AC)^2=(12)^2+(3.5)^2[/tex]
[tex](AC)^2=144+12.25[/tex]
[tex](AC)^2=156.25[/tex]
[tex]AC={\sqrt{156.25}}[/tex]
[tex]AC=12.5mm[/tex]
Therefore, the value of the slant height is 12.5mm.
Hence, option C is correct.
find the greatest common factor of the following monomials 3B + 30 B
Answer:
3B
Step-by-step explanation:
The greatest common factor is the greatest number that will divide two values. We have two values 3B and 30B. Each has numbers which multiply together to give the number. We need to find the highest value or most in common they share. Each has the factors:
3B: 1,3,B
30B: 1, 3, 5, 6, 10, B
Both have 3 and B has factors. Our GCF is these two factors.
What fo the graphs if lines in the form y=mx have in common?How might they differ
Answer:
654
Step-by-step explanation:
The graphs of lines in the form y=mx always pass through the origin (0, 0). These graphs only differ in the rate of decrease or increase of the lines.
In Mathematics and Geometry, a proportional relationship is a type of relationship that produces equivalent ratios and it can be represented by the following mathematical equation:
y = mx
Where:
y represents the y-variable.x represents the x-variable.m is the constant of proportionality.Generally speaking, the characteristics for a graph that shows a proportional relationship or an equation in y = mx form include the following:
"A straight line can be drawn through the points.""The line connecting the points passes through the origin (0, 0)."In conclusion, the difference between the graphs of the form y = mx is the rate of decrease or increase of the lines.
Complete Question:
What do the graphs of lines in the form y=mx have in common? How might they differ?
What is the degree of x^5-4x+2
Answer:
5
Step-by-step explanation:
The degree of a polynomial is found by identifying the term with the largest exponent. The degree of a term is found by adding all the exponents of the variables of that term.
For example: [tex]3x^{2} yx^{3}[/tex]
The degree of this term is found by adding all the exponents: 2+1+3=6
In the case of a polynomial, it meets the largest degree term
For example: [tex]2x^{2} y+5x^{2} y^{2} z-8x^{4}[/tex]
If we add the exponents of each term, we will have the term with the greatest degree : 5
The degree of the polynomial, [tex]x^5-4x+2[/tex] is 5.
What is the Degree of a Polynomial?The degree of a polynomial can be defined as the largest exponents on any of the variables of a polynomial of the largest sum of exponents, if any of it's term has multiple variables.
Thus: The largest exponent in [tex]x^5-4x+2[/tex] is 5.
Therefore, the degree of the polynomial, [tex]x^5-4x+2[/tex] is 5.
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the 146.35 cost of a party was shared by 10 people. how much did each person have to play? be sure to round to the nearest cent.
Answer:
$14.64 per person
Step-by-step explanation:
If we are sharing the cost between 10 people, we divide the total cost by 10
$146.35 /10 = $14.635
We round to the nearest cent
$14.64
Each of the 10 people would need to pay $14.64 for the party cost of $146.35, rounded to the nearest cent.
To calculate how much each person would have to pay for the party cost of $146.35 shared by 10 people, you divide the total cost by the number of people.
Step-by-step calculation:
Find the total cost of the party: $146.35.Divide the total cost by the number of people sharing the cost, which is 10.The calculation would be: $146.35 / 10 = $14.635.Round the amount to the nearest cent: $14.64.Therefore, each person would have to pay $14.64.
I need a step by step solution i need corrections
1/3+3/4=4/12+9/12=13/12=1 and 1/12. (1 1/12)
5/6+2/3=5/6+4/6=9/6=3/2 or 1.5 or 1 and 1/2.
What is the gcf of 42 and 56
[tex]42=2\cdot21=\boxed2\cdot3\cdot\boxed7\\\\56=2\cdot28=2\cdot2\cdot14=\boxed2\cdot2\cdot2\cdot\boxed7\\\\Answer:\ GCF(42,\ 56)=\boxed2\cdot\boxed7=14[/tex]
If you vertically stretch the exponential function, f(x)=2^x by a factor of 3, what is the equation of the new function?
A. g(x)=2•3^x
B. g(x)=2^3x
C. g(x)=1/3•2^x
D. g(x)=3•2^x
Answer:
The correct answer is D.
Step-by-step explanation:
just multiply the original function by the factor 3.
For each 9 mm of coloured fabric Sarah uses to make her curtains, she also uses 2 cm of white fabric. Express the amount of white fabric to coloured fabric as a ratio in its simplest form.
Answer:
The ratio of the white fabric to the colored fabric is [tex]\frac{20}{9}[/tex] in its simplest form
Step-by-step explanation:
The ratio indicates how many times one number contains another
The ratio can be written as:
A fraction [tex]\frac{a}{b}[/tex] a : ba to bThe two terms of the ratio must have the same units
∵ Sarah uses 9 mm of colored fabric to make her curtains
∵ She also uses 2 cm of of white fabric
- To express the amount of white fabric to colored fabric as a ratio
you must change the centimeter to millimeter because the
terms of ratio must have the same unit
∵ 1 centimeter = 10 millimeters
∴ 2 centimeters = 2 × 10 = 20 millimeters
∴ She uses 20 millimeters of the white fabric
Now write the ratio between the white fabric and the colored fabric
→ White : colored
→ 20 : 9
∵ 20 and 9 do not have a common factor
∴ The simplest form of the ratio is 20 : 9
The ratio of the white fabric to the colored fabric is [tex]\frac{20}{9}[/tex] in its simplest form
Sarah uses 2 cm of white fabric for every 9 mm of coloured fabric. After converting to the same unit (centimeters), the simplest form of the ratio of white fabric to coloured fabric is approximately 2.22:1.
Explanation:To determine the ratio of the amount of white fabric to coloured fabric Sarah needs for her curtains in its simplest form, we first need to ensure that both fabrics are expressed in the same units. The question states Sarah uses 9 mm of coloured fabric and 2 cm of white fabric. Since there are 10 mm in a cm, 9 mm of coloured fabric can be converted to 0.9 cm.
Now, with both fabric measurements in centimeters, we can write the ratio of white fabric to coloured fabric: 2 cm of white fabric to 0.9 cm of coloured fabric. To find the simplest form of this ratio, we divide both sides by 0.9:
2 cm ÷ 0.9 cm = 2.2222...0.9 cm ÷ 0.9 cm = 1The simplest form of the ratio is therefore 2.2222...:1, which can be rounded and written as approximately 2.22:1, white to coloured fabric.
Fourteen seniors were asked how many minutes they spent on doing their homework the previous night. The data is displayed below. Find the median and interpret the value in context. 73 75 87 65 69 62 81 64 68 101 74 71 89 87 a 74 minutes; About half of the students spent less than 74 minutes doing homework and about half spent more than 74 minutes on homework. b 73.5 minutes; About half of the students spent less than 73.5 minutes doing homework and about half spent more than 73.5 minutes on homework. c 73 minutes; About half of the students spent less than 73 minutes doing homework and about half spent more than 73 minutes on homework. d 73.5 minutes; Most of the students spent 73.5 minutes on homework.
Answer:
b
Step-by-step explanation:
We need to find the median of:-
73 75 87 65 69 62 81 64 68 101 74 71 89 87
First, we need to arrange the numbers in ascending order as below:-
62, 64, 65, 68, 69, 71, 73, 74, 75, 81, 87, 87, 89, 101
Since there are a total of 14 numbers, let's split it up into two halves (each of seven numbers)
62, 64, 65, 68, 69, 71, 73 ||| 74, 75, 81, 87, 87, 89, 101
The median would be the mean of the two middle numbers i.e. the mean of 73 and 74
Median = [tex]\frac{73+74}{2}[/tex]
= [tex]\frac{147}{2}[/tex]
= 73.5
So, about half of the students spent less than 73.5 minutes doing homework and about half spent more than 73.5 minutes on homework
Answer:
Option b is the correct choice.
Step-by-step explanation:
We have been given a data set about minutes spent on doing homework the previous night by 14 seniors.
To find the median of data set, first of all we will arrange our data values from least to greatest order.
62, 64, 65, 68, 69, 71, 73, 74, 75, 81, 87, 87, 89, 101.
Since our data set has an even number (14) of data points, therefore, median will be the average of middle two points, that is 7th and 8th term.
[tex]\text{Median}=\frac{\text{7th term + 8th term}}{2}[/tex]
[tex]\text{Median}=\frac{73+74}{2}[/tex]
[tex]\text{Median}=\frac{147}{2}[/tex]
[tex]\text{Median}=73.5[/tex]
Therefore, median of our given data set is 73.5.
Since median of a data set separates the higher half from the lower half of a data sample. So about half of the students spent less than 73.5 minutes doing homework and about half spent more than 73.5 minutes on homework.
Therefore, option b is the correct choice.
|x| – 7 = 8 plz help me
x = –1 or 1
x = 1
x = 15
x = –15 or 15
[tex]|x|- 7 = 8\\\\|x|=15\\\\x=-15 \vee x=15[/tex]
Answer:
x = –15 or 15
Step-by-step explanation:
|x| – 7 = 8
We need to isolate the absolute value.
Add 7 to each side
|x| – 7+7 = 8+7
|x| = 15
Now to get rid of the absolute values, we take what is inside the absolute values and set it equal to the right hand side. Remember we set it equal to the positive amount and the negative amount.
x=+15 and x=-15
"Name the property:
a + (b+12) = (a+b) + 12"
Answer:
This property would be the Associative property of addition.
Describe how the number of total triangles in each shape is related to the shape’s number.
Need more info:
Can you give me more info so I can help you better?
Problem Page
A certain drug is made from only two ingredients: compound A and compound B. There are
5 milliliters of compound A used for every
6 milliliters of compound B. If a chemist wants to make
935 milliliters of the drug, how many milliliters of compound A are needed?
Answer:
425 mm
Step-by-step explanation:
The ratio of compound A to compound B is 5 is to 6.
So, we can say that the total ratio is of 11 parts (5+6=11).
If the chemist wants a total of 935 mm of the drug, then each of the 11 parts are worth:
[tex]\frac{935}{11}=85[/tex]
From the ratio, we know that Compound A is 5 parts. So:
[tex]85*5=425[/tex]
425 mm of Compound A is needed.
To make 935 milliliters of the drug using 5 milliliters of compound A for every 6 milliliters of compound B, approximately 429 milliliters of compound A would be needed. This was found by setting up and solving a proportion based on the given ratio.
Explanation:This question refers to a ratio or proportion problem. Given that for every 5 milliliters of compound A you use 6 milliliters of compound B, we can set up a proportion to solve for the amount of compound A needed to make 935 milliliters of the drug.
First, establish the existing ratio. 5ml A is to 6ml B, or in other words, 5/6 = A/B. Having the amount of the entire drug, 935 ml, we can sum up the parts, which means A (the required amount of compound A in ml) plus B (the required amount of compound B in ml) should equal to 935 ml.
Substituting B as 6A/5 in the equation, we get A + 6A/5 = 935. Solving this equation gives A approximately equal to 429 ml. Thus, you would need approximately 429 milliliters of compound A to create 935 milliliters of the drug.
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Solve for d. 20d − 19d + 3d + 4d + 2d = 20
7x + 3x + 4 = 24 (Given) 10x + 4 = 24 (Simplify) 10x = 20 (?) x = 2 (Division) What is the missing reason for the argument shown?
A)
addition
B)
division
C)
subtraction
D)
multiplication
Answer:
I think it is A or B Hope this helps
Step-by-step explanation:
Answer:
The answer is C.Subtraction im a math teacher so if right mark brainliest
Step-by-step explanation:
find the radius of a circle with a circumference of 45pi centimeters
Answer: 7.16cm
Step-by-step explanation:
R=C/2pi
R=45/pi2
R=45/2 = 22.5pi
The radius of a circle with a circumference of 45pi centimeters is 22.5 centimeters.
Explanation:To find the radius of a circle with a circumference of 45pi centimeters, we can use the formula for circumference:
C = 2(pi)r
Given that the circumference is 45pi, we can substitute this value into the formula:
45pi = 2(pi)r
Now, we can solve for r:
r = 45/2 = 22.5 centimeters
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plz help I don't understand
thank you
Answer:
A. you take 3 ft and divide it in fourths which is 9 inches.
B. side length is 9 inches and the equation is 3ft ÷ .25
Step-by-step explanation:
I explained it in the answer however I will say that a square is the same length all around so I chose to use 3ft instead of 4.5 because its easier but you cannot do this with rectangles.
Which is a solution of y=3x+2?
A) (-1,0)
B) (0,3)
C) (1/3,1)
D) (1,5)
Answer:
D) (1,5)
Step-by-step explanation:
You have to substitute so...
(-1,0):
y = 3x + 2
0 = 3(-1) + 2
0 = -3 +2
0 = -1
(-1,0) is NOT a solution.
(0,3):
y= 3x + 2
3 = 3(0) + 2
3 = 0 +2
3 = 2
(0,3) is NOT a solution.
(1/3,1):
y = 3x + 2
1 = 3(1/3) + 2
1 = 1 + 2
1 = 3
(1/3,1) is NOT a solution.
(1,5):
y = 3x + 2
5 = 3(1) + 2
5 = 3 + 2
5 = 5
(1,5) IS a solution.
Helppppp pleaseeeeee
15) Yes, it is a function.
16)
A f(-4)=2
B F(3)= something around -1.75
C f(-5)=0
D f(-2)=4
E f(0)=0
F) -2
17)2(2a+5)=4a+10
a(a+5)=a^2+5a
18) 1
An arithmetic sequence has a first term of 3 and a fifth term of 31. What is the second term?
Answer:
10
Step-by-step explanation:
let's call the difference in each term d so the sequence would look like
3,(3+d),(3+2d),(3+3d),(3+4d)
notice how in this sequence that (3+4d) is the fifth term so it must equal 31
3+4d=31
4d=28
d=7
now plug this into the second term
(3+(7))
and we see that the second term is 10
The value of the second term will be 10.
Since the arithmetic sequence has a first term of 3 and the fifth term of 31, this can be represented thus:
First term = a = 3
Fifth term = a + 4d = 31.
Substitute the value of a into the second equation.
a + 4d = 31
3 + 4d = 31
4d = 31 - 3
4d = 28.
d = 28/4
d = 7
Therefore, the value of the second term will be:
= a + d
= 3 + 7
= 10
The value of the second term will be 10.
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Answer:
Question 7: I am not very good at recursive rules, so I cannot figure it out, sorry.
Question 8: 1/3
Question 9 a: 75 = How much money per paycheck
Question 9 b: 300 = How much money he started with
Question 10 a: 0,328 = initial amount
Question 10 b: 1.013 = percent increase
Question 11-12: Please submit another picture/question with the full graph.
Step-by-step explanation:
Question 8:
To find the common ratio you take one term divided by one term: 3/1 = 3
Since it is getting smaller every time, fraction: 1/3, because 3 * 1/3 = 1. 1 * 1/3 = 1/3, and it continues in that pattern.
Question 9 a:
f(p) = 75p + 300
Since p = paychecks, 75 appears to be how much money he makes per paycheck.
Question 9 b:
Since you are adding 300 to his current makings, it appears that 300 is the amount of money he already has.
Question 10 a:
Since t = weeks after beginning, 1.013 appears to be the percent increase, and since original amount times percent increase equals total, 10,328 appears to be the initial amount.
Question 10 b:
Since t = weeks after beginning, you would times the percent increase in order to calculate the increase, therefore 1.013 is the percent increase.
Question 11-12: Please submit another picture/question with the full graph.