Answer:
D. No because not all of the pairs are simplified ratiosStep-by-step explanation:
The proportional relationship is:
y = kx, where k- constant of proportionalityLet's find the value of k for each pair and compare:
k = y/x1) x = 3, y = 5 ⇒ k = 5/32) x = 4, y = 7 ⇒ k = 7/43) x = 6, y = 10 ⇒ k = 10/6 = 5/34) x = 9, y = 15 ⇒ k = 15/9 = 5/3As we see thee of the pairs have same value of k, 5/3 and one is different 7/4.
The answer is no.
Answer choices given in the comment:
A. No because not all the pairs represent the same ratioB. Yes because the ratios 3/5 and 6/10 are equalC. Yes because as x increases y increasesD. No because not all of the pairs are simplified ratiosOn Monday, jake could lift 25lbs. One month later he could lift 45lbs. What is the percent change in the number of pounds he can lift? Round to the nearest whole number.
what Is the answer
The percent change in the number of pounds that Jake can lift is 80%.
How to calculate the percentage?From the information illustrated, Jake could lift 25lbs and one month later he could lift 45lbs.
The percentage change will be:
= Change in pounds / Original pounds × 100
= (45 - 25) / 25 × 100
= 20 / 25 × 100
= 4 / 5 × 100
= 80%
The percentage change is 80%.
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Find the solution(s) to the equation sine (startfraction x over 2 endfraction) cosine x minus 1 = 0 on the interval 0 ≤ x 2π. check all that apply. 0 startfraction pi over 3 endfraction startfraction pi over 6 endfraction startfraction 3 pi over 2 endfraction startfraction 5 pi over 3 endfraction
All apply values to the equation are:
0 ⇒ A
π/3 ⇒ B
5π/3 ⇒ E
What is an equation?
A formula known as an equation shows the equality of two expressions by joining them with the equals sign =.
Main Body:
∵ 0 ≤ x ≤ 2π is the domain for angle x
∴ 0 ≤x/2 ≤ π is the domain of angle
∵ sin(x/2) + cos(x) - 1 = 0
→ To solve the equation we should use the rule of cosine double angle
∵ cos(x) = 1 - 2 sin²(x/2)
→ Substitute it in the equation above
∴ sin(x/2) + (1 - 2 sin²(x/2) = 0
∴ sin(x/2) + 1 - 2 sin²(x/2) = 0
→ Add the like terms
∴ sin(x/2) + (1 - 1) - 2 sin²(x/2) = 0
∴ sin(x/2) - 2 sin²(x/2) = 0
→ Take sin(x/2) as a common factor
∴ sin(x/2) [1 - 2sin(x/2)] = 0
→ Equate each factor by 0
∵ sin(x/2) = 0
→ The value of sine equal zero on the x-axis
∴ x/2 = 0, π, 2π
∵ The domain of x/2 is 0 ≤ (x/2) ≤ π
∴ x/2 = 0 and π ⇒ 2π refused because ∉ the domain
→ Multiply both sides by 2 to find x
∴ x = 0 and 2π
∵ 1 - 2sin(x/2) = 0
→ Subtract 1 from both sides
∴ - 2sin(x/2) = -1
→ Divide both sides by -2
∴ sin(x/2) = 1/2
→ The sine is positive in the 1st and 2nd quadrants
∴ (x/2) lies on the 1st OR 2nd quadrants
∵ (x/2) = sin⁻¹(1/2)
∴ (x/2) = π/6 = ⇒ 1st quadrant
→ Multiply both sides by 2
∴ x = π/3
∵ (x/2) = π -π/6 = 5π/6 ⇒ 2nd quadrant
→ Multiply both sides by 2
∴ x = 5π/3
∴ The values of x are 0,π/3 , 5π/3 , 2π
Hence apply values are:
0 ⇒ A
π/3⇒ B
5π/3⇒ E
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what is the square rout of 9
Answer:3
Step-by-step explanation: 3x3=9
Answer:
3
Step-by-step explanation:
√9
=√3²
=√(3²)
=3
{as square root =1/2, 2*1/2 = 1}
Which equation represents the graph below?
-10
Oy = ²r + 10
Oy - 2x + 5
O y = 5x + 2
O y
=
-5
=
x+5
-10
0
-5-
5
y = -1/3 x + 5 this equation represents the given graph.
How do you plot points on graph ?
The horizontal axis is called the x-axis. And the vertical one is the y-axis. Points are written as xy pairs in parentheses, like so: (x, y).Now, just locate the position on x-axis as well as in y-axis and finally plot where these points meet.Proof :
(0, 5) and ( 15, 0) these are the points where the graph is plotted.
y = -1/3 x + 5
put x= 0 and find y
y = 0 + 5
y = 5
put y = 0 and find x
0 = -1/3 x + 5
-5 = -1/3 x
x = 15
So, now we get the same points i.e, (0, 5) and ( 15, 0) as plotted in the given graph.
Hence, we can say that y = -1/3 x + 5 this equation represents the given graph.
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Find the equation of the linear function represented
by the table below in slope-intercept form.
X
1
2
3
4
y
0
-5
-10
-15
The equation of the linear function in slope-intercept form is [tex]y=-5x+5[/tex]
What is slope-intercept form of linear function?When you know the slope of the line to be investigated and the given point is also the y intercept, you can utilize the slope-intercept formula, y = mx + b. (0, b). The y value of the y intercept point is denoted by the symbol b in the formula.
Different values of x and y are given.
Find the slope using any two points from the given points.
[tex]m=\frac{-5-0}{2-1}\\ =-5[/tex]
Use the point-slope form of line to obtain the equation.
[tex]y-0=-5(x-1)\\[/tex]
Arrange the equation in slope- intercept form.
[tex]y=-5x+5[/tex]
So, the equation of the linear function in slope-intercept form is [tex]y=-5x+5[/tex].
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Triangle ABC is congruent to triangle XYZ. Side BC corresponds to what side in triangle XYZ?
Answer:
Side YZ
Step-by-step explanation:
think of the triangles as mirrors of each other
and pay attention to the symbols that correspond from side to side, and angle to angle
Find the x- and y-intercepts of the graph of -2x + y = 22. State each answer as an
integer or an improper fraction in simplest form
The x- and y- intercepts of then graph of; -2x + y = 22 as required in the task content are; -11 and 22 respectively.
What are the x- and y-intercepts of the graph of the given equation?It follows from the task content that the x- and y-intercepts of the graph of the equation; -2x + y = 22 are to be determined.
Recall that the y-intercept of a graph refers to the value of y when x = 0.
Therefore; we have;
-2(0) + y = 22;
y = 22.
Recall that the x-intercept of a graph refers to the value of x when y = 0;
-2x + 0 = 22
x = 22/-2
x = -11.
On this note, it follows that the x-intercept of the graph is at x = -11 while the y-intercept is at; y = 22.
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Can someone please help me on this, I don't understand :)
The values of x and y are 23.3 and 106 as per given diagram.
What is Alternate Interior Angles?
The word "alternate" refers to the transversal's "alternating sides." The "location" of these angles is expressly described by this designation.The alternate interior angles are equal in size when the lines are parallel.The sides of the transversal are "alternated" by alternate interior angles, which are "internal" (between the parallel lines). They are not neighbouring angles, as you can see (next to one another sharing a vertex).The alternate interior angles are equivalent when a transversal cuts two parallel lines.Hence, (3x + 4)° = 74°
3x = 74° - 4°°
x = 70° / 3
x = 23.3
What is Interior Angles on the Same Side of the Transversal?
The name of these angles describes their "location."The measures are supplemental when the lines are parallel.These angles are situated precisely where their names suggests. They are on the same side of the transversal and are "interior" (between the parallel lines).Hence, (3x+4)° + y° = 180°
74° + y° = 180°
y = 106°
Hence, the values of x and y are 23.3 and 106 as per given diagram.
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42 km of 120 km help pls
Answer: 42 km of 120km is 35%
Step-by-step explanation: 42 ÷ 120 is 0.35 then you move decimal 2 places right to get percent.
Can you locate the school where sir isaac newton was once the lucasian professor of mathematics?.
Answer:
The second period from 1669 to 1687 was the highly productive period in which he was Lucasian professor at Cambridge. The third period (nearly as long as the other two combined) saw Newton as a highly paid government official in London with little further interest in mathematical research.
Step-by-step explanation:
PLEASE HELP THIS IS OVERDO
What is the product of 2p + q and –3q – 6p + 1?
–12p2 – 6pq – 4p – 3q + 1
–12p2– 12pq + 2p – 3q2 + q
–9p2q2 + 12pq – 2p + q
12p2 + 12pq +2p + 3q2 + q
The product of the algebraic expression as the product of (2p + q) and (-3q - 6p + 1) is; - 12p² - 12pq + 2p - 3q²+ q
How to multiply algebraic expressions?
We want to find the product of (2p + q) and (-3q - 6p + 1) and this gives;
(2p + q) * (-3q - 6p + 1)
Now, this can be broken down further using distributive property of algebra into;
2p(-3q - 6p + 1) + q(-3q - 6p + 1)
= -6pq - 12p² + 2p - 3q² - 6pq + q
= - 12p² - 3q² - 12pq + 2p + q
Rearranging gives us;
- 12p² - 12pq + 2p - 3q²+ q
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A cyclist rode 5.83 miles in 0.4 hours.
How fast was she going in miles per hour?
At that rate, how long will it take her to go 5.5 miles?
Answer:
Its 12.5 miles per hour.
Step-by-step explanation:
Distance covered by cyclist=3.75 miles. Time =0.3 hours. Speed =3.75÷0.3=12.5
hope this helps
Answer:
0.4 miles per hour
Step-by-step explanation:
Distance covered= 5.83 miles
Time taken to cover the distance =0.4 hours
[tex] speed \: = \frac{distance}{time} [/tex]
[tex] = \frac{5.83}{0.4} [/tex]
=14.575 ~=14.5 miles per hour
If the rate (speed) = 14.575 miles per hour
Distance = 5.5 miles
[tex]time = \frac{distance}{speed} [/tex]
[tex] = \frac{5.5}{14.575} [/tex]
=0.337 ~= 0.4 hours
I inserted a picture so it can be more clear. This is for Algebra 2, Unit 2
Answer: x=-16
Step-by-step explanation:
g^-1 is the inverse of the g(x) graph meaning that the x and g(x) values of the g(x) graph switch places. So in the table when x=-2 g(x)=-16
help meeeeeeeeeeee pleaseee rnnnnn!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!help meeeeeeeeeeee pleaseee rnnnnn!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
By evaluating the exponential equation, we will see that the amount owed after 6 years is $8551.56
How to find the amount owed after 6 years?The formula we need to use is the exponential equation:
A = P*(1 + r/n)^(n*t)
Where:
P is the initial amount, here we know that it is $5,300
r is the rate, in this case is 8%, but it needs to be written as a decimal, so we have r = 0.08
t is the variable, this time is the time in years, we want to find the amount owed after 6 years, so t = 6
n is how many the the rate applies on one unit of t, in this case the rate is monthly, and there are 12 months on a year, so n = 12.
Replacing all that in the given formula we will get:
A = $5,300*(1 + 0.08/12)^(12*6) = $8551.56
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A veterinarian has been asked to prepare a diet, x ounces of Brand A and y ounces of Brand B, for a group of dogs to be used in a nutrition study at the School of Animal Science. It has been stipulated that each serving should be no larger than 8 oz and must contain at least 29 units of Nutrient I and 20 units of Nutrient II. The vet has decided that the diet may be prepared from two brands of dog food: Brand A and Brand B. Each ounce of Brand A contains 3 units of Nutrient I and 4 units of Nutrient II. Each ounce of Brand B contains 5 units of Nutrient I and 2 units of Nutrient II. Brand A costs 5 cents/ounce, and Brand B costs 7 cents/ounce. Determine how many ounces of each brand of dog food should be used per serving to meet the given requirements at a minimum cost. (x,y)=... What is the minimum cost? (Round your answer to the nearest cent.) ..... cents per serving
To meet the given requirements 3 ounces of Brand A and 4 ounces of Brand B should be served , the minimum cost is $43 .
In the question ,
it is given that ,
the each serving should not be larger than 8oz .
let the number of Ounces of Brand A food = x , and
let the number of ounces of brand B = y ,
So , x + y ≤ 8
Brand A has 3 units of Nutrient 1 and 4 units of Nutrient 2 , and
Brand B has 5 units of Nutrient 1 and 2 units of Nutrient 2 ,
So , 3x + 5y ≥ 29 ,
and 4x + 2y ≥ 20,
and x , y ≥ 0 .
given, that
cost of Brand A = 5 cents/ounce
cost of Brand B = 7 cents/ounce
So , the cost equation is c(x) = 5x + 7y ,
drawing the given inequalities on the graph ,
From the graph given below , we find that the vertices of the feasible region are ,
(2,6) , (5.5,2.5) , (3,4)
Substituting the points in the cost equation , we get
For point (2,6) , C = 5(2) + 7(6) = 10 + 42 = 52
For point (3,4), C = 5(3) + 7(4) = 15 + 28 = 43
For point (5.5,2.5) , C = 5(5.5) + 7(2.5) = 45 ,
the minimum cost is at point (3,4) ,
So , 3 ounces of Brand A and 4 ounces of Brand B should be used .
Therefore , To meet the given requirements 3 ounces of Brand A and 4 ounces of Brand B should be served , the minimum cost is $43 .
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What is the answer to this problem ?
The three ordered pairs for the equation y = -4x+3 are (0,3), (1,-1) and (2,-5).
According to the question,
We have the following equation:
y = -4x+3
We have to find the three ordered pairs when the values of x are given in the table.
When x = 0, we have the following value of y:
y = -4*0+3
y = 3
When x = 1:
y = -4*1+3
y = -4+3
y = -1
When x = 2:
y = -4*2+3
y = -8+3
y = -5
Hence, the three ordered pairs for the equation y = -4x+3 are (0,3), (1,-1) and (2,-5).
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Convert the equation y = 3x - 5 from slope-intercept form to standard form.
P is the point (0,-1) and Q is the point (5,9) find the equation of the line through P that is perpendicular to PQ
Answer:
Step-by-step explanation:
Find the slope of PQ
[tex]\frac{9 - (-1)}{5-0}=\frac{10}{5}[/tex] or just [tex]2[/tex]
The perpendicular slope is the negative reciprocal
Use a slope of [tex]-\frac{1}{2}[/tex]
Use the point-slope form of a equation and point P to find a new equation in slope-intercept form
[tex](y- (-1))=-\frac{1}{2}(x-0)[/tex]
[tex]y+1=-\frac{1}{2} x[/tex]
Subtract the 1 from both sides of the equation
[tex]y=-\frac{1}{2}x-1[/tex]
Gabriel is designing a rectangular planter box for their garden. It needs to cover an area of
15 1/2 m
Gabriel wants it to be 7- m long.
4
How wide does the planter box need to be?
Answer:
2m Wide
Step-by-step explanation:
Carlos harvests cassavas at a constant rate. he needs 353535 minutes to harvest a total of 151515 cassavas. write an equation to describe the relationship between t, the time, and ccc, the total number of cassavas.
Carlos harvests cassavas at a constant rate. He needs 353535 minutes to harvest a total of 151515 cassavas.
The ratio of the change in dependent values or outputs to the change in independent values or inputs is known as the rate of change. The change, which also refers to the function's slope, represents the shift in values between two points on a coordinate plane. The formula for the rate of change is (y2 - y1)/, where y stands for the dependent variable and x for the independent variable (x2 - x1).
Given:
Carlos gives 353535 minutes to harvest a total of 151515 cassavas.
Find:
We have to find the total number of cassavas.
Solution:
Carlos harvests cassava at constant rate is 353535 minutes per 151515 cassavas
= 151515/353535
= 0.429
A formula for the quantity of cassava (C) that Carlos harvests each time (T).
This means that after 353535 minutes, 151515 cassavas have been harvested, after 700000 minutes, 300000 cassavas, and so on.
Hence, the required constant rate is 0.429T.
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A number reduced by two, then multiplied by 9
(x-2)9
9x-18
good luck <33
Bella manages a cafe.She bought 15.625 pounds of oranges . She mutiplies the weigh of the oranges by 0.4 to find the weight of the oranges she will use in fruit salads
The weight of an object is the amount of gravitational force applied on the object by the earth. The weight of the oranges to be used is 6.25 pounds.
The level of influence of the earth's gravitational pull on an object determines its weight. This depends also on the size of the mass of the object.
Given that Bella bought 15.625 pounds of oranges.
Let the weight of the oranges required to prepare fruit salad be represented by W. Then the weight of the oranges required is 0.4 of the weight of oranges bought, so that;
W = 0.4 * 15.625
= 6.25
W = 6.25
Thus, the weight of the oranges required to be used for fruit salad is 6.25 pounds.
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Determine the distance between the points (−4, −5) and (8, 0). 13 units 12 units 8 units 29 units
The distance between the points (-4, -5) and (8, 0) is 13 units
The coordinates of the first point = (-4, -5)
The coordinates of the second point = (8, 0)
The distance between the two points d = [tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
Where d is the distance between two points
[tex](x_1,y_1)[/tex] is the coordinates of the first point
[tex](x_2,y_2)[/tex] is the coordinates of the second point
Substitute the values in the equation
The distance between the two points = [tex]\sqrt{(8--4)^2+(0--5)^2}[/tex]
= [tex]\sqrt{12^2+5^2}[/tex]
Find the square of each term
= [tex]\sqrt{144+25}[/tex]
Add the terms together
= [tex]\sqrt{169}[/tex]
Find the square root of the number
= 13 units
Hence, the distance between the points (-4, -5) and (8, 0) is 13 units
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Paul has to put shingles on a roof. A brand new construction worker takes 12 hours to do it alone. When Paul asks the new worker to help him, they can do the job in 2 hours less than it takes Paul to do it alone. How many hours does it take Paul to do the job alone? Workingtogetherformula1a+1b=1T
The number of hours that it takes for Paul to do the job alone is of:
6 hours.
How to obtain the time it takes for Paul do to the job alone?The time that it takes for Paul to do the job alone is given by the together rate, which is obtained as the sum of the separate rates.
The rates in the context of this problem are given as follows:
Construction worker: 1/12.Paul: 1/x.Together rate: 1/(x - 2) -> 2 hours less than Paul's alone.Hence the value of x is obtained applying the together rate, and it gives the number of hours that it takes for Paul to do the job alone.
Hence:
1/(x - 2) = 1/x + 1/12
1/(x - 2) = (12 + x)/(12x)
Applying cross multiplication, we have that:
(12 + x)(x - 2) = 12x
x² + 10x - 24 = 12x
x² - 2x - 24 = 0
(x + 4)(x - 6).
Applying the Factor Theorem, the solutions are given as follows:
x + 4 = 0 -> x = -4 -> extraneous solution, as the number of hours cannot be negative.x - 6 = 0 -> x = 6 -> actual solution.More can be learned about the together rate at https://brainly.com/question/27859524
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Maya is playing a trivia game with multiple choice questions. Each question has 222 correct answers among 555 answer choices. Maya has no idea what the answers to a certain question are, so she needs to choose two different answers at random. What is the probability that maya's first guess is correct and her second guess is incorrect?.
Maya is playing a trivia game with multiple choice questions. Each question has 222 correct answers among 555 answer choices. Maya has no idea what the answers to a certain question are, so she needs to choose two different answers at random.
The probability that maya's first guess is correct and her second guess is incorrect is 0.24.
From the question given above, the following data were obtained:
Correct answer (C) = 222
Total answer = 555
Incorrect answer (I) = 555 – 222 = 333
Next, we shall determine the probability that her 1st guess is correct.
Correct answer, nC = 222
Total answer, nS= 555
Probability of correct answer, P(C) =?
P(C) = nC / nS
P(C) = 222 / 555
Next, we shall determine the probability that her 2nd guess is incorrect
Incorrect answer, nI = 333
Total answer, nS = 554
Probability of incorrect answer, P(I) =?
P(I) = nI / nS
P(I) = 333 / 554
Finally, we shall determine the probability that her first guess is correct and her second guess is incorrect.
Probability of correct answer, P(C) = 222 / 555
Probability of incorrect answer, P(I) = 333 / 554
Probability of 1st correct and 2nd incorrect, P(C n I) =?
P(C n I) = P(C) × P(I)
P(C n I) = (222 / 555) × (333 / 554)
P(C n I) = 0.24
Hence the answer is, The probability that maya's first guess is correct and her second guess is incorrect is 0.24.
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Answer:
0.3
Step-by-step explanation:
Khan Academy ;)
34.7 divided by 0.7
round answer to 2 decimal places
Answer:
49.57
Step-by-step explanation:
0.7 can go into 34.7 49 times. 0.7*49=37.3
34.7-34.3=0.4 and 0.4/0.7 is 4/7 or 0.57...
So 49+.57=49.57
four cards are selected at random without replacement from a well-shuffled deck of 52 playing cards. find the probability of the given event. (round your answer to four decimal places.) four cards of the same suit are drawn.
The probability of selecting four cards of the same suit is 0.0106.
What is probability?A probability is a number that reflects the chance or likelihood that a particular event will occur.
Given that, four cards are selected at random without replacement from a well-shuffled deck of 52 playing cards
No. of cards for each suit = 13
Total types of four suits = 4(hearts, spades, diamond, clubs)
Probability = (conditional case)/(total case)
So, total number of conditional case = No. of case of selecting all 4 cards of hearts suit + no. of case of selecting all 4 cards of spades suit + no. of case of selecting all 4 cards of clubs suit + no. of case of selecting all 4 cards of diamonds suit
= 13C4 + 13C4 + 13C4 + 13C4
= 4*13C4 = 4*13!/9!4! = 4*13*12*11*10*9!/9!*4*3*2*1 = 2860
Total number of cases = 52C4 = 52!/48!4! = 270725
So, probability of getting all 4 cards of the same suit =
2860/270725
= 0.0106.
Hence, The probability of selecting four cards of the same suit is 0.0106.
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A regular polygon has 16 sides. If one of its angles measures (5h − 29)°, what is the value of h?
h=56.5
h=37.3
h=33.6
h=9
PLEASE HELP
The value of h in a regular polygon of 16 sides is 37.3.
According to the question,
We have the following information:
A regular polygon has 16 sides. And one of its angles measures (5h − 29)°.
We know that following formula is used to find the sum of interior angles of a polygon:
(n-2)*180 where n is the number of sides of a polygon
(16-2)180
14*180
2520°
Now, in this polygon, there are 16 sides. So, there will be 16 angles.
Now, to find the measurement of one angle, we will divide total sum by number of angles.
One angle = 2520/16
One angle = 157.5°
Now, we have the following expression:
5h-29 = 157.5
5h = 157.5+29
5h = 186.5
h = 186.5/5
h = 37.3
Hence, the correct option is B (the second one).
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If a = 7 and b equals 13 what is the value of C round your answer to the nearest hundredth
Answer:
c ≈ 14.76
Step-by-step explanation:
In right triangle ABC, you have short sides a=7 and b=13. You want the length of the hypotenuse, 'c'.
Pythagorean theoremThe Pythagorean theorem tells you the relationship between the sides of a right triangle is ...
c² = a² +b²
ApplicationFilling in the given values, we have ...
c² = 7² +13² = 49 +169 = 218
c = √218 ≈ 14.7648
Rounding to hundredths, we have ...
c ≈ 14.76
__
Additional comment
Your posted question asks for the value of C (capitalized). That refers to the right angle, so its value is C = 90°. It is always helpful if you ask for what you really want to know.
A triangle has side lengths of (7x-4)(7x−4) centimeters, (x+3)(x+3) centimeters, and (3y+2)(3y+2) centimeters. Which expression represents the perimeter, in centimeters, of the triangle?
The perimeter of the triangle is, 8x + 3y +1.
What is perimeter?
A perimeter is a closed path that encloses, surrounds, or delimits a one-dimensional length, a two-dimensional shape, or both. The circumference of a circle or an ellipse is its perimeter. There are numerous practical uses for calculating the perimeter.
Let, the side lengths of the triangle are (7x - 4), (x + 3) and (3y + 2).
Since the perimeter is the sum of all side lengths.
So,
Perimeter = (7x - 4) + (x + 3) + (3y + 2)
= 7x - 4 + x + 3 + 3y + 2
Perimeter = 8x + 3y + 1
Hence, the perimeter of the triangle is, 8x + 3y + 1.
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