Answer:
↓ ↓ ↓
Step-by-step explanation:
Given: f(x)= x² -4x + 3
Find :-
a) f(1)
f(x)= x² -4x + 3
→ Substitute x with with 1:-
[tex]\tt f(1)=\left(1\right)^2-4\left(1\right)+3[/tex]
[tex]\tt f(1)=1-4\cdot \:1+3[/tex]
[tex]\tt f(1)=1-4+3[/tex]
[tex]\boxed{\tt f(1)=0}[/tex]
_______________________
b) f(3)
f(x)= x² -4x + 3
→ Substitute x with with 3:-
[tex]\tt f(3)=\left(3\right)^2-4\left(3\right)+3[/tex]
[tex]\tt f(3)=\left(3\right)^2-4\left(3\right)+3[/tex]
[tex]\tt f(3)=3^2-4\cdot \:3+3[/tex]
[tex]\tt f(3)=3^2-12+3[/tex]
[tex]\tt f(3)=3^2-9[/tex]
[tex]\tt f(3)=9-9[/tex]
[tex]\boxed{\tt f(3)=0}[/tex]
_______________________
c) f(-1)
f(x)= x² -4x + 3
→ Substitute x with with -1:-
[tex]\tt f(-1)=\left(-1\right)^2-4\left(-1\right)+3[/tex]
[tex]\tt f(-1)=\left(-1\right)^2+4\cdot \:1+3[/tex]
[tex]\tt f(-1)=1+4+3[/tex]
[tex]\boxed{\tt f(-1)=8}[/tex]
_______________________
d) -f(1)
f(x)= x² -4x + 3
→ -f(1)
[tex]\tt -f(1)=\left(1\right)^2-4\left(1\right)+3[/tex]
[tex]\tt -f(1)=1-4\cdot \:1+3[/tex]
[tex]\tt -f(1)=1-4+3[/tex]
[tex]\boxed{\tt -f(1)=0}[/tex]
_____________________
Hope this helps! :)
A technology salesperson earned $4008 commission on the sale of video equipment. If he earns 6% on all sales, what amount of video equipment did he sell?
Answer: We can start by using the formula for calculating commission:
Commission = Rate x Sales
where Rate is the commission rate and Sales is the amount of sales.
In this case, we know the commission earned ($4008) and the commission rate (6%), but we don't know the amount of sales. We can set up an equation and solve for Sales:
$4008 = 0.06 x Sales
Dividing both sides by 0.06, we get:
Sales = $4008 ÷ 0.06 = $66,800
Therefore, the salesperson sold $66,800 worth of video equipment.
Step-by-step explanation:
y=4x=6 how many soluations does it have?
The line goes through the point and has a slope of 4, a y-intercept of -6, and a slope of 4. (0, 6).
What is a good example of a line's slope?The proportion of the increase in the y-value to the change inside the x-value may also be used to determine slope. For instance: We can get the slope of a line given two locations, P = (0, -1) and Q := (4,1) on the line.
What does slope mean?A line's slope is how steeply it slopes form LEFT to RIGHT. Divide the rise, or vertically increase, by the run, or horizontally start changing, to get the line's gradient.
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The complete question is:
X in graphs the equation y = 4x - 6.
Select all statements about Xin's graph that are true.
a. The graph is a curved line.
b. The line passes through the origin.
c. The line passes through the point (0, 6).
d. The slope of the line is 4.
e. The y-intercept of the line is -6.
Write your own question that involves time conversion and ask someone to solve it.
Make sure you solve it too so you know if they get the correct answer!
Answer: If a movie starts at 2:45 PM and has a duration of 2 hours and 10 minutes, what time does it end?
To solve this, we need to add the duration of the movie to the start time and convert it back to the 12-hour clock format.
Adding 2 hours and 10 minutes to 2:45 PM, we get:
2:45 PM + 2 hours + 10 minutes = 4:55 PM
So, the movie ends at 4:55 PM.
Step-by-step explanation:
Please help!!! See imagine bellow!!!
Answer:
onomatopoeia
Step-by-step explanation:
Calculate the value of the expression-6(-5-4)-4(-3-2)=
Answer:
74
Step-by-step explanation:
-6(-5-4) - 4(-3-2)
30 + 24 + 12 + 8
= 54 + 12 + 8
= 66 + 8
= 74
'In how many different ways can we select a committee consisting of 3 engineers, 2 physicists, and 2 computer scientists from 10 engineers, 5 physicists, and 6 computer scientists? First guess.
The number of different ways will be 108000.
What is an arrangement?Permutations are various ways to arrange things in a specific order. It can also be stated as the linear reordering of items in an already ordered set.
A first guess for the number of ways to select a committee consisting of 3 engineers, 2 physicists, and 2 computer scientists from 10 engineers, 5 physicists, and 6 computer scientists could be to simply multiply the number of ways to select each group separately:
10 choose 3 x 5 choose 2 x 6 choose 2
This would give us the number of ways to select 3 engineers out of 10, 2 physicists out of 5, and 2 computer scientists out of 6.
The number of ways can be,
N = ¹⁰C₃ x ⁵C₂ x ⁶C₂
N = 10 x 9 x 8 x 5 x 6 x 5
N = 108000
Therefore, the number of different ways will be 108000.
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A factory produces 600 jars of peanut butter and 250 jars of mixed nuts per day. Which shows the ratio of mixed nuts to peanut butter?
Graph the line passing through (3,4) whose slope is m=−1.
The equation of the line passing through (3,4) whose slope is -1 will be y = - x + 7.
What is a linear equation?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 linear equation is given as,
y = mx + c
Where m is the slope of the line and c is the y-intercept of the line.
The slope of the line is -1. Then the equation is written as,
y = - 1x + c
The equation passes through (3, 4), then we have
4 = - 1(3) + c
4 = - 3 + c
c = 4 + 3
c = 7
The equation of the line passing through (3,4) whose slope is -1 will be y = - x + 7.
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Item
Original Price Discount Sale Price
Soccer Jersey $85.75 20% $ ?
Tennis Racket $ ? 55% $49.05
Archery Set $94.00 % ? $61.10
Thus, the archery set's discounted price is $61.10.
What does discount mean?A reduction from the normal or list price. providing clients with a 10% discount. purchasing discounted tickets. (2): a proportionate reduction from an account of debt, typically provided in exchange for cash or quick payment.
The initial cost of the soccer jersey must be multiplied by (100% - 20%) = 80%, or 0.8, to determine the sale price after a 20% discount.
$85.75 x 0.8 = $68.60; Sale Price =Original Price multiplied by (1 - Discount)
Hence, the soccer jersey's retail price is $68.60.
We can apply the formula to get the tennis racket's original cost after just a 55% reduction and a $49.05 sale price:
Original Cost = Discounted Cost (1 - Discount)
Original Price = $49.05 / (1 - 55%) = $49.05 / 0.45 = $109.00
Hence, the tennis racket's original cost is $99.00.
The following formula can be used to determine the discount % for the archer set with just an original cost of $94.00 as well as a sale of $61.10:
Discount = (Original Price - Sale Price) / Original Price x 100%
Discount = ($94.00 - $61.10) / $94.00 x 100% = 35%
Hence, the archery set has a 35% discount.
The following equation can be used to determine the retail price of a archery kit with a 35% reduction and an original cost of $94.00:
Sale Price =Original Price multiplied by (1 - Discount)
Sale Price = $94.00 x (1 - 35%) = $61.10
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7. A pot of water is heated to 200°F. The table shows typical temperature readings for the pot. The room temperature is 70°F.
After 5 minutes the pot of water is 164°F. How long will it take the water to cool to 150°F? Round to the nearest minute.
A. About 4 min
B. About 3 min
C. About 8 min
D. About 6 min
We get abοut 4 minutes if we rοund tο the clοsest minute. The sοlutiοn is thus A. 4 minutes οr sο.
What is prοpοrtiοnality ?A mathematical nοtiοn knοwn as prοpοrtiοnality describes the relatiοnship between twο quantities that cοnsistently change tοgether. When twο quantities are prοpοrtiοnal, their relatiοnship stays cοnsistent οver time. Tο put it anοther way, if twο variables, A and B, are prοpοrtiοnal, then the ratiο οf A tο B must be cοnstant and can be written as fοllοws:
A/B = k
where k is a ratiο cοnstant. This means that tο keep the ratiο cοnsistent, if οne οf the quantities is multiplied by a certain factοr, the οther quantity must alsο be multiplied by the same factοr.
given
dT/dt = -k (T - Ts)
where T is the οbject's temperature, Ts is the envirοnment's temperature, and k is a prοpοrtiοnality factοr. dT/dt stands fοr the rate οf change οf temperature.
In this instance, the rοοm is currently 70°F and the pοt οf water is οriginally 200°F. We thus have:
dT/dt = -k (200 - 70) = -k(130) (130)
The water's temperature has decreased tο 164°F after 5 minutes. Therefοre, we are aware that t = 5 at T = 164:
[tex]164 = 200e^{(-k*5)[/tex]
calculating k:
[tex]e^{(-5k)} = 164/200 = 0.82[/tex]
-5k = ln(0.82) (0.82)
k = -ln(0.82)/5
We can nοw calculate the time it takes fοr the water tο cοοl tο 150°F using this number οf k:
[tex]150 = 200e^{(-k*t)[/tex]
[tex]e^{(-k*t)}= 150/200 = 0.75-k*t = ln(0.75) (0.75)[/tex]
t = -ln(0.75)/k
By changing the amοunt οf k, we οbtain:
t = -ln(0.75)/(-ln(0.82)/5) ≈ 3.8
We get abοut 4 minutes if we rοund tο the clοsest minute. The sοlutiοn is thus A. 4 minutes οr sο.
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Tree Diagrams
'daT vo
1. A family has four children. How many outcomes are in the sample space that indicates the sex of the children?
Assume that the probability of male (M) and the probability of female (F) are each 1/2. Use a tree diagram to model this situation:
Child 1
Child 2
Child 3
Child 4
Possible Outcomes
2. What is the probability that all children are males?
3. What is the probability that they will have all one gender of children (all males or all females)?
4. What is the probability that there will be at least 2 female children?
5. You are bored and decide to flip a coin, then roll a 6 sided die, then flip a coin, then roll a 3-sided die. Create a tree diagram to model all possible outcomes
6. How many possible outcomes are there?
7. What is the probability of getting only heads on both coin tosses?
The total possible outcomes is 16, the probability that all children are males is 1/16, the probability of having all one gender is 1/8
What is the possible outcomes1. The tree diagram for the sex of the children is as follows:
Child 1: M / F
Child 2: M / F
Child 3: M / F
Child 4: M / F
Possible Outcomes: MMMM, MMMF, MMFM, MFMF, FMFM, FMMF, FMFF, FFFF
There are 2 options for each child, so the total number of possible outcomes is 2 x 2 x 2 x 2 = 16.
2. The probability that all children are males is 1/2 x 1/2 x 1/2 x 1/2 = 1/16.
3. The probability of having all one gender of children is the sum of the probability of having all boys and the probability of having all girls. Each of these outcomes has a probability of 1/16, so the total probability is 1/16 + 1/16 = 1/8.
4. The easiest way to solve this problem is to find the probability of having no female children, and then subtract that from 1. The probability of having no female children is (1/2)^4 = 1/16, so the probability of having at least 2 female children is 1 - 1/16 - 1/16 = 7/8.
5. The tree diagram for flipping a coin, rolling a 6-sided die, flipping a coin, and rolling a 3-sided die is as follows:
C / H
/
1-6 1-3
\ /
H / T
The first branch represents the coin flip, the second branch represents the roll of the 6-sided die, the third branch represents the second coin flip, and the fourth branch represents the roll of the 3-sided die.
6. There are 2 options for the first coin flip, 6 options for the second branch, 2 options for the second coin flip, and 3 options for the fourth branch, so the total number of possible outcomes is 2 x 6 x 2 x 3 = 72.
7. The probability of getting only heads on both coin tosses is 1/2 x 1/2 = 1/4. Therefore, the probability of getting only heads on both coin tosses and any result on the dice is 1/4 x 1 = 1/4.
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Three girls share R12000 in the ratio 2:3:7 calculate how much each girl will get show calculations
According to the ratio , the three girls shares are R2000,R3000 and R7000.
What is ratio?
When two numbers are compared, the ratio between them shows how often the first number contains the second. As an illustration, the ratio of oranges to lemons in a dish of fruit is 8:6 if there are 8 oranges and 6 lemons present.
Here the given total share amount is R12000.
Now the ratio for three girls is 2:3:7.
Total = 2+3+7=12
Now the share amounts are,
=> [tex]\frac{2}{12}\times 12000[/tex] = [tex]2\times1000=R2000.\\[/tex]
=> [tex]\frac{3}{12}\times=3\times1000=R3000[/tex]
=> [tex]\frac{7}{12}\times12000=7\times1000=R7000[/tex]
Hence the three girls shares are R2000,R3000 and R7000.
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When Birchwood Elementary School opened for the first year, there were 240 students. During each of the following 10 years, the number of students increased exponentially. To determine the number of years (n) that had passed when the number of students reached 365, use the following equation.
240(1.15)n=365
After how many years did the number of students reach 365?
Responses
1 year
2 years
3 years
4 years
It took about 4.04 years for the number of students to reach 365.
The correct option is D.
What is Logarithmic?The logarithm is the opposite of exponentiation. This shows that the logarithm of x to the base of b is the exponent to which b must be raised in order to reach the number x.
Given:
There were 240 students enrolled in Birchwood Elementary School during its first academic year.
The number of students grew significantly throughout the course of each of the ensuing ten years.
We may use logarithms to find n, the number of years.
By multiplying both sides of the equation by their logarithms, we obtain:
log(240(1.15)ⁿ) = log(365)
Using the rule of logarithms that says log(ab) = log(a) + log(b) and the fact that log(1.15) is a constant,
we can simplify the left side of the equation:
log(240) + nlog(1.15) = log(365)
Subtracting log(240) from both sides, we get:
nlog(1.15) = log(365) - log(240)
Using the rule of logarithms that says log(a/b) = log(a) - log(b), we can simplify the right side of the equation:
nlog(1.15) = log(365/240)
nlog(1.15) = log(1.52083)
Dividing both sides by log(1.15), we get:
n = log(1.52083) / log(1.15)
n ≈ 4.04
Therefore, n = 4 years.
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The graph shows g(x), which is a translation of f(x)=x2. Write the function rule for g(x).
The function g(x) is translation of f(x) 9 units up. The solution has been obtained by using transformation.
What is transformation?An operation known as a transformation involves moving a polygon or other two-dimensional object on a plane or coordinate system.
We are given that the function g(x) is a translation of the function
f(x) = x².
In the graph, we can see that the vertex of the parabola is at (0, 9).
This means that the function g(x) is 9 units up from the function f(x).
So, g(x) = x² + 9
Hence, the function g(x) is translation of f(x) 9 units up.
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12 - ___ =7.32
What is the missing blank
Answer:
Your blank answer is 4.68
Step-by-step explanation:
Well lets make the missing blank into a variable.
12 - x = 7.32
This way we can solve for x. Simplify.
Add x to both side.
12 = 7.32 + x
Subtract 7.32 to both side leaving you x.
12 - 7.32 = x
x = 4.68
Answer:
12 - 4.68 = 7.32
Step-by-step explanation:
Now we have to,
→ Find the missing number in the equation.
Let us assume that,
→ Missing number = m
Forming the equation,
→ 12 - m = 7.32
Then the value of m will be,
→ 12 - m = 7.32
→ -m = 7.32 - 12
→ -m = -4.68
→ [ m = 4.68 ]
Hence, the answer is 4.68.
7 men build a house in 300 days how many men .working in the same rate can build the house in 70 days
Answer:
30 men
Step-by-step explanation:
7 men x 300 days = 2100 man-days to build 1 house)
(2100 man-days/house) x (1 house/70 days) = 30 men
Core Assessment 35. Choose all the expressions that have as a product. 0 1/2 x 1/1/201 17/10 × 1/100 X 07/3 × 19/0 3 01 × 1/2 36. i need this by tonight pls help me i will give u 30 pionts
Help me please I need help i dont know the answer!
The value of x that makes the equation true is 2.25.
What are model representations of equation?A mathematical model is an abstract, mathematically based description of a physical system. Mathematical modelling is the process of creating a mathematical model. Both applied mathematics and the natural sciences employ mathematical models. The area of operations research is largely concerned with using mathematical models to resolve issues in commercial or military operations.
Using the figure we see that, for the left model we have:
3 (-x) = -3x.
Also, we have 10(1) = 10
Thus the left model has the equation:
-3x + 10
For the right model we have:
5x - 8
Equate the two models:
-3x + 10 = 5x - 8
18 = 8x
x = 2.25
Hence, the value of x that makes the equation true is 2.25.
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Determine the inverse of the function f(x)=2(x-3)^2 +4
The correct statement regarding the inverse function is given as follows:
[tex]f^{-1}(x) = 3 - \sqrt{\frac{x - 4}{2}}[/tex], with a domain of x ≤ 3.
How to obtain the inverse function?The function for this problem is defined as follows:
f(x) = 2(x - 3)² + 4.
The axis of symmetry of the function is of x = 3, hence the domain of the inverse function is given as follows:
x ≤ 3.
The inverse function is obtained exchanging x and y and then isolating y, hence:
x = 2(y - 3)² + 4
2(y - 3)² = x - 4.
[tex](y - 3)^2 = \frac{x - 4}{2}[/tex]
[tex]y - 3 = \sqrt{\frac{x - 4}{2}}[/tex]
[tex]f^{-1}(x) = 3 - \sqrt{\frac{x - 4}{2}}[/tex]
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Find the value of x.
Answer:
43 degrees
Step-by-step explanation:
85 degrees + 25 = 110 and the angle sum for a right triangle will always equal 180 degrees. The outside angle is 62 degrees, so 62 +70= 132. 180-132 is 48. Now you want to solve the angle sum for the shorter wider triangle. We know one angle is 89 degrees, plus the 48 degrees= 137. Now to find ? do 180-137=43. The missing angle for ? is 43 degrees.
I hope this helps :)
Given that £1 = $2, how much is $30 worth in Pounds (£)?
Answer:
15£
Step-by-step explanation:
if 1£=2$
then30$=30/2
15£
Camille made a quilt for her cousin's doll. The quilt had an 8 × 8 array of different color square patches. If each patch is 2 2/3 in long, what is the area of the whole quilt?
As a result, the total quilt's area is 512/9 square inches.
What is square used for?Square offers businesses a range of goods and services to help them complete sales deals, use marketing strategies, and control their finances, inventory, and workforce.
The quilt has an 8 x 8 array of square patches, which means it has a total of 8 x 8 = 64 square patches. Each square patch is 2 2/3 inches long.
To find the area of the whole quilt, we need to find the total area covered by all 64 square patches. We can do this by multiplying the length and width of one square patch by the total number of patches:
Area of one square patch = length x width = (2 2/3 in) x (2 2/3 in) = (8/3 in) x (8/3 in) = 64/9 sq in
Total area of all 64 square patches = (64 patches) x (64/9 sq in per patch) = 512/9 sq in
Therefore, the area of the whole quilt is 512/9 square inches.
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It took Matt 25 minutes to read a science article. It took him 13 times as long to read the assigned chapters in a history book. How long did it take Matt to read the history chapters?
The number of hours it would take to read the history chapters is 5 hours 25 minutes.
How long would it take to read the history chapters?In order to determine how long it would take to read the assigned chapters in the history book, multiply the time it take to read the science article by 13.
Multiplication is the mathematical operation that is used to determine the product of two or more values. The sign that is used to represent multiplication is x.
Time it would take to read the history chapters = 25 x 13 = 325 minutes
325 / 60 = 5 hours 25 minutes
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The principal P is borrowed and the loan's future value A at time t is given. Determine the loan's simple interest rate r.
P = $2300, A = $2762, t = 6 months
The loan's simple interest is
%.
The loan's simple interest rate when the loan of $2,300 is taken will be 40.17%.
What is simple interest?Let P be the principal, R be the rate of interest, and T be the time. Then the interest rate is given as,
The formula for interest is written as,
I = (PRT)/100
The value of the principal is $2,300 and the amount generated in six months is $2,762. Then the percentage rate is calculated as,
($2,762 - $2,300) = [$2,300 x r x (6/12)] / 100
46,200 = 1,150r
r = 40.17%
The loan's simple interest rate when the loan of $2,300 is taken will be 40.17%.
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60 pounds of cat food in 5 bags
Answer:
12 lbs of food per bag
Step-by-step explanation:
To distribute cat food equally into a certain number of bags, we can divide the amount of cat food by the number of bags to get how much food should go in each bag.
60 lbs of food ÷ 5 bags = 12 lbs of food per bag
Solve for x. Leave as an improper fraction. 5 = 3x + 9
Answer:
x = -4/3
Step-by-step explanation:
hope this helps^^
Sara is making 3 batches of chocolate chip cookies and 3 batches of oatmeal cookies each batch of chocolate chip cookie uses 2 1/4 cups of flour. She will use 12 3/4 cups of flour for all six batches.
Which equation can be used to determine how many cups of flour are needed for each batch of oatmeal cookies?
Answer:
Step-by-step explanation:
If Sara is making 3 batches of chocolate chip cookies using 2 1/4 cups of flour per batch, then the total amount of flour she uses for the chocolate chip cookies is:
3 batches x 2 1/4 cups per batch = 6 3/4 cups of flour
Since she will use 12 3/4 cups of flour for all six batches, the amount of flour used for the oatmeal cookies can be found by subtracting the amount of flour used for the chocolate chip cookies from the total amount of flour:
12 3/4 cups - 6 3/4 cups = 6 cups
To determine how many cups of flour are needed for each batch of oatmeal cookies, we can divide the total amount of flour used for the oatmeal cookies by the number of batches:
6 cups ÷ 3 batches = 2 cups per batch
Therefore, the equation that can be used to determine how many cups of flour are needed for each batch of oatmeal cookies is:
Flour needed per batch of oatmeal cookies = Total flour needed for oatmeal cookies ÷ Number of oatmeal cookie batches
Or, in this case:
Flour needed per batch of oatmeal cookies = 6 cups ÷ 3 batches = 2 cups per batch.
HELPPP! A yard plan includes a rectangular garden that is surrounded by bricks. In the drawing, the garden
is 7 inches by 4 inches. The length and width of the actual garden will be 35 times larger than the
length and width in the drawing.
(a) What is the perimeter of the drawing? Show your work.
(b) What is the perimeter of the actual garden? Show your work.
(c) What is the effect on the perimeter of the garden with the dimensions are multiplied by 35?
Show your work.
4. Which transformation below would map the polygon A to the polygon B?
Polygon A has been translated to the right and reflected vertically
Polygon A has been rotated 90 degrees counterclockwise
Polygon A has been reflected horizontally and reflected vertically
Polygon A has been translated down and then right
The transformation below would map the polygon A to the polygon B is
Polygon A have translated to the right and reflected vertically.
What is Translation ?A translation is a type of transformation that takes each point in a figure and slides it the same distance in the same direction.
We have two polygon as A and B.
As, 90° clockwise rotation: (x, y) becomes (y,-x) 90° counterclockwise rotation: (x, y) becomes (-y, x).
But there is no change in the coordinate as such rule so rotation is not possible.
As we can see the figure Polygon A have translated to the right and reflected vertically.
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Answer: Polygon A has been reflected horizontally and reflected vertically
Step-by-step explanation: I took the quiz and it was the right answer
i’m so confused with this question, can someone please give me an explanation?
The value of the sides are;
x = 6
HW = 37
AM = 32
WM = 44
How to determine the valueIt is important to note that one of the properties of an isosceles trapezoid is that the non-parallel sides are equal to each other.
From this deduction, we then have;
HW = AM
Given that;
HW = 6x + 1
AM = 3x + 19
Equate the lengths
6x + 1 = 3x + 19
collect the like terms
6x - 3x = 19 - 1
3x = 18
Make 'x' subject
x = 6
Then, HW = 37 and AM = 37
Substitute the value of x in
HA = 6x - 4 = 32
WM = 4x + 20 = 44
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