Answers
Answer:
17. 6
18. 18 (as shown)
19. 10/3 = 3 1/3
20. 20/3 = 6 2/3
Step-by-step explanation:
17. For this, you can subtract the given length GB=12 from the length you found for problem 18, BF=18. Doing that tells you FG = 18-12 = 6, as you have marked on the diagram.
19. As with median BF, the point G divides it into two parts that have the ratio 1:2. The distance from G to D is the shorter of the distances, so you have ...
... GD = (1/3) CD = (1/3)·10 = 10/3
... GD = 3 1/3
20. You can subtract GD from CD to get CG, or you can multiply CD by 2/3. The result is the same either way.
... CG = CD -GD = 10 -3 1/3
... CG = 6 2/3
_____
Comment on centroid and median
The centroid (G) divides each median into parts in the ratio 1:2. Hence the shorter of those parts is half the length of the longer one, or 1/3 the total length of the median.
The longer of the parts is double the length of the shorter one, or 2/3 the total length of the median.
Your marking of median BF seems to show an understanding of these relationships. (Total length: 18; length of parts: 6 and 12.)
Related Questions
Bonnie is making a dipping sauce. She mixes 150 milliliters of soy sauce with 100 milliliters of vinegar. How much soy sauce does Bonnie mix with every 1 milliliter of vinegar?
Answers
Answer:How much soy sauce does Bonnie mix with every 1 millimeter of vinegar is 1.5
How much vinegar does bonnie mix with 1 millimeter of soy sauce is .666
Step-by-step explanation: The first is 150 divided by 100 is 1.5
Lina bought 22 boxes of crayons for $28.16 how much did she pay for each box of crayons
Answers
Cost per box = $1.28
The cost of each box of crayons can be calculated by dividing the total cost by the number of boxes purchased.
Total cost: $28.16
Number of boxes: 22
Cost per box = Total cost / Number of boxes
Cost per box = $28.16 / 22
=$1.28
PLEASE SHOW WORK
Solve using substitution
y=x+1
3x-y=9
Answers
y = x + 1 (*)
3x - y = 9 (**)
Substitute (*) to (**):
3x - (x + 1) = 9
3x - x - 1 = 9 add 1 to both sides
2x = 10 divide both sides by 2i
x = 5Put the value of x to (*):
y = 5 + 1
y = 6Answer: x = 5 and y= 6 → (5, 6).(3x+7x-20) ÷ (x+4) can someone solve this?
Answers
Answer:
Alright well solve by dividing using polynomial division
10 - 60/x + 4 Hope this helps have a nice day :)
Step-by-step explanation:
What is the area of a parallelogram ABCD
Answers
Answer:
Area of a parallelogram would be 13.46
Step-by-step explanation:
Since area of a parallelogram is represented by the formula
Area = [tex]\frac{1}{2}[/tex] ([tex](D_{1}*D_{2})[/tex]
Where [tex]D_{1}[/tex] and [tex]D_{2}[/tex] are two diagonals of the given parallelograms.
In the given figure [tex]D_{1}=AC[/tex] and [tex]D_{2}[/tex] = BD
We will find the length of [tex]D_{1}[/tex] and [tex]D_{2}[/tex] first
Since points A and C are (3,6) and (5,1)
So distance AC = [tex]\sqrt{(6-1)^{2}+(3-5)^{2} }[/tex]
= [tex]\sqrt{5^{2}+(-2)^{2}}[/tex]
= [tex]\sqrt{25+4}=\sqrt{29}[/tex]
Since B and D are the points (6, 5) and (2, 2)
So length of BD = [tex]\sqrt{(6-2)^{2}+(5-2)^{2}}[/tex]
BD = [tex]\sqrt{4^{2}+3^{2}}=\sqrt{25}=5[/tex]
Now we will put these values in the formula
Area of parallelogram = [tex]\frac{1}{2}(\sqrt{29})(5)[/tex]
= [tex]\frac{5}{2}[/tex] × [tex]\sqrt{29}[/tex]
= (2.5) (5.385)
= 13.46
Name the axis or quadrant in which the point (−3, 2) lies.
A. Quadrant III
B. Quadrant II
C. x-axis
D. Quadrant I
Answers
Which of the following equations represents a degenerate ellipse?
Answers
Answer: [tex]\frac{x^2}{10} = -\frac{y^2}{18}[/tex]
Step-by-step explanation:
Since, The degenerate form of an ellipse is always a point.
Thus, the equation that shows only a point will be our answer.
Since [tex]9x^2 + 4y^2 = 1[/tex] is the equation of an ellipse,
Thus, It can not be a point.
[tex]\frac{x^2}{14} + \frac{y^2}{19} =2[/tex] is not a point ( because it is an equation of ellipse)
But, when we plot [tex]\frac{x^2}{10} = -\frac{y^2}{18}[/tex]
We get only a point (0,0).
Thus, equation, [tex]\frac{x^2}{10} = -\frac{y^2}{18}[/tex] shows only one point.
Therefore, it is a generated form of ellipse.
The equation representing a degenerate ellipse would have the sum of the distances from the foci to any point on the curve as a constant.
Explanation:An ellipse is a closed curve such that the sum of the distances from a point on the curve to the two foci is constant. So, the equation representing a degenerate ellipse would have the sum of the distances from the foci to any point on the curve as a constant. The correct equation is (b).
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Alissa would like to make a deposit into her savings account. She filled out a deposit ticket and handed it to the teller at her bank. The teller apologizes to Alissa and explains that she cannot accept the deposit ticket in its current form. Determine what, if anything, Alissa will have to change in order for her deposit ticket to be accepted. a. The sub total is calculated incorrectly b. Alissa forgot to sign the deposit ticket for less cash back c. The total is calculated incorrectly d. Alissa forgot to date the deposit ticket
Answers
The correct option is c. The total is calculated incorrectly.
When making a deposit, it is crucial that the total amount being deposited is calculated correctly on the deposit ticket. This total amount should match the sum of the cash and checks being deposited. If there is a discrepancy between the subtotal of the individual amounts and the total, the deposit ticket will not be accepted because it does not accurately reflect the amount of money being handled.
Here's the logic behind why the other options are not the primary issue:
a. The sub total is calculated incorrectly: While this is a potential error, the primary concern for the teller would be the total amount being deposited. The subtotal informs the depositor and the bank of the breakdown of the deposit, but the total is what ultimately needs to be correct for the deposit to be processed accurately.
b. Alissa forgot to sign the deposit ticket for less cash back: While a signature is important for verification purposes, especially if cash back is requested, the absence of a signature would typically result in the teller asking for a signature rather than outright rejection of the deposit ticket. The calculation of the total deposit amount is a more fundamental error that must be corrected before the deposit can be accepted.
d. Alissa forgot to date the deposit ticket: The date on a deposit ticket is important for record-keeping purposes. However, forgetting to date the deposit ticket is usually a minor issue that can be resolved quickly at the teller's window. It would not typically prevent the deposit from being accepted, assuming the total deposit amount is correct.
In summary, the teller's refusal to accept the deposit ticket in its current form most likely stems from an incorrect total calculation, as this directly affects the accuracy of the deposit transaction. Alissa will need to ensure that the total on the deposit ticket correctly reflects the sum of the cash and checks she is depositing. Once the total is corrected, the deposit ticket should be accepted by the teller.
Drag each expression to show whether it is equivalent to 36 + 9, 9(4 – 1), or (4 • 9) + (4 • 2).
Answers
Answer:
None of these are equivalent
Step-by-step explanation:
36 + 9 = 45
9(4 – 1) = 9* 3 = 27
(4 • 9) + (4 • 2) = 36+ 8 = 44
For which value of X is the row in the table of values incorrect? The function is the quadratic function Y=3/4x^2
Answers
Answer:
x = 2
Step-by-step explanation:
check by substituting each given value of x into the function
x = 0 ⇒ y = [tex]\frac{3}{4}[/tex] × 0² = 0
hence (0, 0) is correct
x = 2 ⇒ y = [tex]\frac{3}{4}[/tex] × 4 = 3
hence (2, 4 ) is incorrect
x = 3 ⇒ y = [tex]\frac{3}{4}[/tex] × 9 = 6 [tex]\frac{3}{4}[/tex]
hence (3, 6 [tex]\frac{3}{4}[/tex]) is correct
x = 5 ⇒ y = [tex]\frac{3}{4}[/tex] × 25 = 18 [tex]\frac{3}{4}[/tex]
hence (5, 18 [tex]\frac{3}{4}[/tex]) is correct
Complete the table to show how many yellow pencils there are if there are 5,7,9,11, or 13 blue pencils. How many of each type of pencil does shawna have if she has 55 pencils?
Answers
If there are 4 yellow pencils for each blue one, then this is the answer. If not then comment and tell me.
Blue Yellow
5 20
7 28
9 36
11 44
13 52
The required number of yellow and blue pencils are 44 and 11 respectively.
What are equation models?The equation model is defined as the model of the given situation in the form of an equation using variables and constants.
Here,
As Shawan has 4 yellow pencils for every blue pencil,
Let the number of blue pencils be b,
Now,
Yellow pencil (y) = 4 × b
Now,
put b = 5,7,9,11, or 13
So y = 20, 28, 36, 44, or 52
Now,
b + y = 55
when b = 11 and y = 44 sums of the pencil would be 55.
Thus, the required number of yellow and blue pencils are 44 and 11 respectively.
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One grain of sand approximately weighs 7 * 10^{-5} g. How many grains of sand are there in 6300 kg of sand? Give your answer in standard form.
Answers
Answer:
Proportion states that the two ratio or fractions are equal.
Given the statement: One grain of sand approximately weighs 7 * 10^{-5} g.
To find how many grains of sand are there in 6300 kg of sand.
Let x be the number of grains of sand in 6300 kg of sand.
Using conversion :
1 kg = 1000 g
6300 kg = 6300000 g
Then, by using proportion method, we have;
[tex]\frac{1}{7\times 10^{-5}}= \frac{x}{6300000}[/tex]
[tex]\frac{10^5}{7} = \frac{x}{6300000}[/tex]
By cross multiply we get;
[tex]6300000 \times 10^5 = 7x[/tex]
or
[tex]63 \times 10^5 \times 10^5 = 7x[/tex]
[tex]63 \times 10^{5+5} = 7x[/tex] [using [tex]x^a \cdot x^b = x^{a+b}[/tex]]
[tex]63 \times 10^{10} = 7x[/tex]
Divide both sides by 7 we get;
[tex]x = \frac{63 \times 10^{10}}{7} = 9 \times 10^{10}[/tex]
Standard form is a way of of writing down very large or very small numbers easily.
Therefore, [tex]9 \times 10^{10}[/tex] grains of sand are there in 6300 kg of sand.
1.) (7.RP.3) Tracy started a savings account that is set up so that the simple interest earned on the investment is moved into a separate account at the end of each year. Tracy invests $5,000 at 4.5%, what is the total simple interest accumulated in the checking account after 2 years? (1 pt) *
a) $4.50
b) $45
c) $450
d) $4,500
e) $45,000
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2. 2. (7.RP.3) Sylvia bought a 6-month $1900 certificate of deposit. At the end of 6 months, she received a $209 simple interest. What rate of interest did the certificate pay? Show all of your work.
Answers
Answer:
1. c. $450.
2. 22%
Step-by-step explanation:
1. We will use simple interest formula to find the amount of interest after 2 years on $5,000. As interest is not compounded, so it will not matter if she moves the simple interest earned in separate account or not.
[tex]I=P*r*t[/tex], where,
I= Amount of interest.
P= Principal amount.
r= Interest rate in decimal form.
t= Time in years.
[tex]4.5\text{ percent}=\frac{4.5}{100}=0.045[/tex]
Upon substituting our given values in above formula we will get,
[tex]I=5000*0.045*2[/tex]
[tex]I=5000*0.09[/tex]
[tex]I=450[/tex]
Therefore, Tracy will get an amount of $450 as simple interest after 2 years and option c is the correct choice.
2. Sylvia bought a 6-month $1900 certificate of deposit. At the end of 6 months, she received a $209 simple interest.
6 months is same as 1/2 year.
[tex]I=P*r*t[/tex]
Upon substituting our given values in above formula we will get,
[tex]209=1900*r*\frac{1}{2}[/tex]
[tex]209=950*r[/tex]
[tex]r=\frac{209}{950}[/tex]
[tex]r=0.22[/tex]
Since interest rate is in decimal form, let us convert it in percent.
[tex]\text{Interest rate}=0.22\times 100=22\text{ percent}[/tex]
Therefore, interest rate of certificate of deposit was 22%.
The measures of the angles of triangle ABC are given by the expressions in the table
What are the measures of angles A and C
m/A = ? Degrees
m/C = ? Degrees
Answers
Answer:
[tex]m<A=125\°[/tex]
[tex]m<B=35\°[/tex]
Step-by-step explanation:
step 1
Find the value of x
we know that
The sum of the interior angles in a triangle must be equal to 180 degrees
so
[tex]m<A+m<B+m<C=180\°[/tex]
substitute the values and solve for x
[tex](6x-1)\°+20\°+(x+14)\°=180\°[/tex]
[tex]7x=180\°-33\°[/tex]
[tex]7x=147\°[/tex]
[tex]x=147\°/7=21\°[/tex]
step 2
Find the measure of angle A
[tex]m<A=(6x-1)\°=6(21)-1=125\°[/tex]
step 3
Find the measure of angle C
[tex]m<C=(x+14)\°=21+14=35\°[/tex]
Will award brainiest to whoever answers and helps, I really need this ;;
Mathematics of personal finance:
Assume that the probability of a driver getting into an accident is 7.1%, the average cost of an accident is $14,886.05, and the overhead cost for an insurance company per insured driver is $110. What should the driver's insurance premium be?
A)$1156.43
B)$1242.93
C)$1276.27
D)$1165.49
Answers
Multiply the probability by the cost of the accident:
14,886.05 x 0.071 = 1056.91
Now add the overhead cost:
1056.91 + 110 = 1166.91
The closest answer to this is number D.
Answer:
D. $1165.49
Step-by-step explanation:
We have that the probability of a driver getting into an accident = 7.1% i.e. 0.071.
Now, the average cost of an accident = $14,886.05
Then, the expected cost of an accident = $14,886.05 × 0.071 = $1056.91
As, the overhead cost for insurance = $110
Therefore, the driver's insurance premium = $1056.91 + $110 = $1166.91
Since, the closest option to $1166.91 is option D.
Hence, the driver's insurance premium will be $1165.49.
Jim drove 605 miles in 11 hours. At the same rate, how many miles would he drive in 13 hours?
Answers
Answer: 715 Miles
Step-by-step explanation:
Divide 605 miles by 11 hours, which would give you how far he travels in 1 hour. (605/11=55) Since they give you 13 hours, multiply 13 hours by 55 miles which gets you 715 miles :)
Help with #27. Answer choices are
A. 2
B.5
C.3
D.4
Answers
Answer:
C
Step-by-step explanation:
Since GK bisects ∠FGH then ∠FGK = ∠KGH, hence
6v - 2 = 4v + 4 ( subtract 4v from both sides )
2v - 2 = 4 ( add 2 to both sides )
2v = 6 ( divide both sides by 2 )
v = 3 → C
Quadrilateral ABCD is a parallelogram if its diagonals bisect each other. Prove that Quadrilateral ABCD is a parallelogram by finding the value of x.
A) x = 2
B) x = 3
C) x =- 9|2
D) x = -3|4
Information that goes with the picture:
AO = 5x + 2
BO = x − 1
CO = 3x − 7
DO = 3x + 8
Answers
Because this is a parallelogram, we know that the diagonals bisect. This means that AO = DO, and CO = BO
It doesn't matter which two segments we use, but I'm going to use CO = BO for this one.
3x - 7 = x - 1
2x = 6
x = 3
Option B. is the answer.
Answer: d
Step-by-step explanation:
HELP 10PTS!! what is the value of x?
Answers
Answer:
68
Step-by-step explanation:
Since this is an isosceles triangle the bottom 2 angles are equal. So both bottom angles are 56 degrees. The three angles of a triangle add to 180 degrees.
56+ 56+ x = 180
Combine like terms
112 +x =180
Subtract 112 from each side
112-112+x = 180-112
x =68
add like terms: 180 = 112 + x. subtract 112 from both sides: 68 = x. and that's your answer.
is -13/1 rational or irrational number
Answers
Answer:
Rational
Step-by-step explanation:
A rational number is a number that can be written as a fraction, (or is any real number, positive or negative) Irrational numbers, for example, are numbers that are decimals, but dont terminate or repeat. Such as [tex]\pi[/tex] and [tex] the square root of 2, 3 and 5. may i have brainliest?
using the order of operations. select true or false for 81 ÷ 9 + 2 = 11
Answers
Answer: true
Step-by-step explanation: Using the order of operations, 81 / 9 would be first, which is equal to 9. Then, add 2. 2+9 = 11, so the answer is true.
Since division goes before addition we first divide 81:9 and get 9 and to that we add 2 addition goes after division. 9+2 is equal to 11 so the answer is True.
A good way to remember it is:
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
Hope this helps! <3
Help with trig homework
A 6 m ladder is leaning against a wall. The base of the ladder is 1.5 m from the wall. Calculate how high up the wall the ladder reaches.
Answers
Answer:
height = 5.809
Step-by-step explanation:
l=6m
b=1.5m
l^2=b^2+h^2
36=2.25 +h^2
h^2 = 36 - 2.25
h=[tex]\sqrt{33.75}[/tex]
h = 5.809
What is the value of y ?
Answers
Answer:the value of y is 44
Step-by-step explanation:
solve the system of equations. use any method you'd like:
5x+6y=-14
x-2y=10
Answers
x -2y= 10
5x+6y=-14
(x-2y=10)3
5x+6y=-14
3x-6y= 30
8x. = 16
8. 8
x= 2
then you substitute that x value for the x in either equation.
2-2y=10
-2. -2
-2y=8
-2. -2
y=-4
(2,-4)
To solve the system of equations, isolate x in the second equation and substitute it into the first equation. Simplify the resulting equation and solve for y. Substitute this value of y back into the second equation to find the value of x.
Explanation:To solve the system of equations:
From the second equation, isolate x by adding 2y to both sides: x = 10 + 2y.Substitute this value of x into the first equation: 5(10 + 2y) + 6y = -14.Simplify the equation and solve for y:50 + 10y + 6y = -14
16y = -64
y = -4
Substitute this value of y back into the second equation to find x:
x - 2(-4) = 10
x + 8 = 10
x = 2
Therefore, the solution to the system of equations is x = 2 and y = -4.
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how do you solve this?
Answers
Answer: To solve these types of questions what I always do is get a protractor if you have one and put it up against to where the dot is in the middle of the empty hole and then get a ruler or a pencil and make the line keep going to see what angle. In this case your answer is 65% I think.
Can some please help and how to do it with the work shown.
Answers
Total blood cholesterol level was measured for each of
8 adults. Here are the 8
measurements (in mg/dL):
264, 191, 160, 148, 262, 212, 268, 246
Answers
Step-by-step explanation:
Given blood cholesterol level was measured for each of 8 adults (in mg/dL) are:
264, 191, 160, 148, 262, 212, 268, 246
In order to find the mean, we need to add all those 8 numbers and divide by 8.
Therefore, mean = [tex]\frac{264+191+160+148+262+212+268+246}{8} =\frac{1751}{8} =218.9.[/tex]
Mean = 218.9.In order to find the median, we need to arrange them in ascending order:
148, 160, 191, 212, 246, 262, 264, 268.
The middle most two values are 212 and 246.
Therefore, median = [tex]\frac{212+246}{2} =\frac{458}{2} = 229.[/tex]
Median = 229.[tex]\mathrm{The\:mode\:is\:the\:term\:in\:the\:data\:set\:that\:appears\:the\:most.}[/tex]
[tex]\mathrm{If\:there\:is\:more\:than\:one\:term\:that\:appears\:the\:most,\:then\:there\:is\:no\:mode.}[/tex]
[tex]\mathrm{Count\:the\:number\:of\:times\:each\:element\:appears\:in\:the\:list}[/tex]
[tex]\begin{pmatrix}148&160&191&212&246&262&264&268\\ 1&1&1&1&1&1&1&1\end{pmatrix}[/tex]
[tex]\mathrm{The\:most\:common\:element\:is\:not\:unique,\:so\:there\:is\:no\:mode}[/tex]
Therefore, Mode = Zero mode.Answer the following questions showing all your work. You are trying to save up money by working in the summer. You have been able to secure two part time jobs. a. Your first job is to babysit a couple of times a week. You charge a flat fee of $10 for transportation back and forth to the house plus $5.50 per hour. Let t be the time in hours that you babysit. Write an algebraic expression to define the amount of money you will make for t hours of work. b. You also work at a local coffee shop in the mornings. You are paid $10 per hour. Write an algebraic expression to define the amount of money you will make for t hours of work. c. Write an algebraic expression for how much money will you will make for both jobs together.
Answers
First off, p= 5.5t + 10 for the babysitting job. Technically, that is all the work you can possibly have.
Secondly, p= 10h for the coffee shop job, with h being a separate amount of time than the variable t due to the fact that the are attributed to different jobs.
Lastly, p= 5.5t + 10h + 10 for both jobs during the entire day, with the hours worked being applied separately from each job.
Your welcome
write an equation of the line containing the specified point and perpendicular to indicated line. (-5,6) 4x-y=3
Answers
Answer:
y = [tex]\frac{1}{2}x + \frac{29}{4}[/tex]
Step-by-step explanation:
First, we need to rearrange the equation to make it y = mx + c
4x - y = 3
y + 3 = 4x
y = 4x -3
So the slope of the line is 4.
The slope of a line perpendicular to an equation is:
[tex]\frac{-1}{gradient}[/tex]
So the slope of the perpendicular line is:
[tex]\frac{-1}{4}[/tex] = -0.25
Now to find the equation of a line you can use the following equation:
y - y₁ = m(x - x₁)
Where y₁ is the y-coordinate, x₁ is the x-coordinate and m is the gradient. Plug the values in:
y₁ = 6
x₁ = -5
m = [tex]\frac{-1}{4}[/tex]
y - 6 = [tex]\frac{-1}{4}[/tex](x - - 5)
To get rid of the fraction we need to multiply the whole equation by 4:
4y - 24 = -1(x - - 5)
The two negatives cancel out:
4y - 24 = -1(x + 5)
Multiply the brackets out:
4y - 24 = -x + 5
Now, to rearrange the formula back into y = mx + c
Move the -24 over to the other side making it a +24:
4y = 2x + 5 + 24
4y = 2x + 29
Divide everything by 4:
y = [tex]\frac{2}{4}x + \frac{29}{4}[/tex]
y = [tex]\frac{1}{2}x + \frac{29}{4}[/tex]
Hope this helps!
100 POINTS!!!!!!!!!!!
The bottom one is < 1 and < 3
Answers
Answer:
B. <1 and <5
Step-by-step explanation:
they look exactly the same
Answer:
Correct answer is B. <1 and <5
Step-by-step explanation: