Perimeter of a rectangle is :
\(\qquad \sf \dashrightarrow \: P= 2l + 2b\)
where,
P = perimeter = 48 cml = Length = ?b = breadth = 6 cm\(\qquad \sf \dashrightarrow \: 48 = 2l + 2(6)\)
\(\qquad \sf \dashrightarrow \: 2l = 48 - 2(6)\)
\(\qquad \sf \dashrightarrow \: 2l = 48 -12\)
\(\qquad \sf \dashrightarrow \: 2l = 36\)
\(\qquad \sf \dashrightarrow \: l = 36 \div 2\)
\(\qquad \sf \dashrightarrow \: l = 18 \: cm\)
So, length if the rectangle is 18 cm
Answer:
18cm
Step-by-step explanation:
the perimeter of a rectangle is the width/breadth (I'm calling it width) + the other width on the opposite side + the length + the length on the opposite side
(perimeter is a measure of the border length)
so,
l + l + w + w = perimeter
if the width is 6, our new equation is:
l + l + 6 + 6 = 48
l + l + 12 = 48
now, if we subtract 12 from both sides of the equation...
l + l + 12 = 48
- 12 -12
l + l = 36
(number plus itself is equal to the number x2)
2L = 36
divide both sides by 2...
2L = 36
__ __
2 2
L = 18
So, the length of the rectangle is 18 cm
(to check, we can add 18 + 18 + 6 + 6 = 48)
Work out the lengths of sides a and b. Give your answers to 1 decimals place. (Pythagoras theoram
Step-by-step explanation:
h²=o²+a²
a²=8²+5²
a²=64+25
a²=89
a=√89
a=9.433
To one decimal place it is 9.4
for b,
h²=o²+a²
17²=b²+12²
289=b²+144
289-144=b²
145=b²
b=√145
b=12.041
To one decimal place it is 12.0
What part of an hour passes from 3:12 p.m. to 5:30 p.m.?
Answer:
2.3 hours
Step-by-step explanation:
From 3:12 pm to 4:12 pm, one hour passes.
From 4:12 pm to 5:12 pm, another hour passes.
From 5:12 pm to 5:30 pm, there are 18 minutes that pass.
Therefore, the total time elapsed is 2 hours and 18 minutes out of 60 minutes in an hour.
To convert this to a fraction, we can write:
2 hours + 18 minutes = 2 + 18/60 hours = 2.3 hours
So, 2.3/1 hour passes from 3:12 pm to 5:30 pm.
Given: D is the midpoint of AB: E is the midpoint of AC
Prove: DE 1 BC
Complete the missing parts of the paragraph proof
Proof
To prove that DE and BC are parallel, we need to show
that they have the same slope.
slope of DE
V
A(25, 20)
loro, o
CC
GDD
Elab, o)
slope of BC
BIOO)
C(2,0)
Therefore, because
DE I BC.
Answer:
Step-by-step explanation:
Slope of DE = \(\frac{y_2-y_1}{x_2-x_1}\)
= \(\frac{c-c}{a+b-b}\)
= 0
Slope of BC = \(\frac{y_2-y_1}{x_2-x_1}\)
= \(\frac{0-0}{2a-0}\)
= 0
Therefore, DE║BC because slopes of BC and DE are equal.
Which expression is the best estimate of the product 7/8 and 8 1/10
Answer:567/ 80 or 7(which was rounded to the nearest whole number)
Step-by-step explanation:
What transformations were applied to ABC to obtain A'B'C'?
Answer: rotated 90 degrees counterclockwise and shifted 2 units up.
Step-by-step explanation:
Troy, Rico, and Mario each bought an item at the book store. Troy bought a magazine for 4.99, Rico bought a pocket dictionary for 12.99, and Mario bought a package of notepads for 8.95. What is the average amount that each boy spent?
Which rate corresponds to the proportional relationship shown in the graph?
Drag and drop the answer into the box to match the graph with its unit rate.
The required rate of change of snail is given as 1.34 cm/s, as of the given graph.
What is the slope of the line?The slope of the line is a tangent angle made by line with horizontal. i.e. m =tanx where x in degrees.
Here,
to determine the rate of change in the graph, we first need to locat two coordinates and determine the slope of the line,
since of slope of the line is equal to the rate of change,
So,
From the graph, we have two points (0, 0) and (12, 16)
Rate of change = slope
Rate of change = 16 - 0 / 12 - 0
= 16/12 = 4/3 = 1.34 cm/s
Thus, the required rate of change of snails is given as 1.34 cm/s.
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Matrix M has x-rows and (11-x) columns. Matrix N has y-rows and (y+5) columns. If MN and NM both are defined, find the values of x and y
Answer:
\(x=8, y=3\)
Step-by-step explanation:
Recall that if a matrix multiplication of two matrices is defined, then the number of columns of the first matrix is equivalent to the number of rows of the second matrix.
Since matrix M has (11-x) columns and matrix N has y rows, and MN is defined, so it follows:
\(y=11-x----(1)\)
Since matrix N has (y+5) columns and matrix M has x rows, and NM is defined, so it follows:
\(y+5=x----(2)\)
Substitute (1) into (2):
\(11-x+5=x\\2x=16\\\therefore x=8--(3)\)
Substitute (3) into (1):
\(y=11-8=3\)
Manuel's small dog eats
1
8
bag of dog food in 1 month. His large dog eats
5
8
bag of dog food in 1 month.
How many bags do both dogs eat in 6 months?
Answer:
I wanna say 348?? maybe.... I think
Which expression is equivalent to 9 more than the quoteint of x and 5
The equivalent expression to the sentence "9 more than the quotient of x and 5" is given as follows:
x/5 + 9.
How to obtain the equivalent expression?The sentence in the context of this problem is defined as follows:
"9 more than the quotient of x and 5"
The quotient of x and 5 is given by the division of x by 5, as follows:
x/5.
9 more means that 9 is added to the quotient of x and 5, hence the equivalent expression to the sentence "9 more than the quotient of x and 5" is given as follows:
x/5 + 9.
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The perimeter of the rectangle below is 166 units. Find the value of y.
4y + 2
Sy
The value of y is 9.
Perimeter is the total length of the boundary of any closed shape. It is basically the sum of all the sides of a given figure.
Perimeter of a rectangle is given by [ 2( l + b ) ] or (2 l + 2 b ) or
( l + l + b + b), here l and b represent the length and breadth of the given rectangle.
Perimeter of the given rectangle = 166 units ( given )
Length of the given rectangle = 5y ( given )
Breadth of the given rectangle = (4y + 2) ( given )
By putting values in the formula, we get
perimeter = 2 ( l + b )
166 = 2 [ (5y) + (4y + 2) ]
166 = 2 [ 5y + 4y + 2 ]
166 = 2 [ 9y + 2 ]
166 = 2*9y + 2*2
166 = 18y + 4
166-4 = 18y ( moving 4 to other side thus changing the sign to negative )
162 = 18y
162/18 = y ( moving 18 to other side for further solution )
y = 9
Therefore, the value of y for which the perimeter of the given rectangle is 166 units is 9.
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The value of y is 9.
The whole length of any closed shape's boundary is known as its perimeter. In essence, it is the total of a given figure's sides.
A rectangle's perimeter can be calculated using [2(l + b)] or (2 l + 2 b) or
(l + l + b + b), where l and b stand for the provided rectangle's length and width
The rectangle's perimeter is 166 units ( given )
The rectangle's length is 5y ( given )
Given rectangle's width equals (4y + 2) ( given )
When we enter values into the formula, we obtain
perimeter = 2 ( l + b )
166 = 2 [ (5y) + (4y + 2) ]
166 = 2 [ 5y + 4y + 2 ]
166 = 2 [ 9y + 2 ]
166 = 2*9y + 2*2
166 = 18y + 4
166-4 = 18y ( moving 4 to other side thus changing the sign to negative )
162 = 18y
162/18 = y ( moving 18 to other side for further solution )
y = 9
Therefore, the value of y for which the perimeter of the given rectangle is 166 units is 9.
a) Explain why this method does not result in a fair decision?
b) Explain how they can use the sum of the numbers rolled to make a fair decision?
Alexa has 10/36, Gayle 16/36, and Mei 10/36 respectively. Due to Gayle's comparatively enhanced likelihood of claiming the post of captain, the overall system is unfair.
How to solveThis approach of decision-making is adversely biased since the probabilities of each individual's choice as captain are not equivalent.
Through cogitating the potential outcomes for all three contestants--Alexa, Gayle and Mei--we can establish that due to the number of combinations augmenting each sum, their respective ranges possess different frequencies.
Whilst two dice have a total of 36 possible outcomes upon being thrown, enumerating their extent yields:
Alexa (sum of 2 through 5):
2: (1, 1) -> just one combination
3: (1, 2), (2, 1) -> two combinations
4: (1, 3), (2, 2), (3, 1) -> three combos
5: (1, 4), (2, 3), (3, 2), (4, 1) -> four combinations
Consequently, Alexa's total combinations amount to 10.
Contrastingly, Gayle (sum 6 through 8) obtains 5+6+5 = 16 combinations whereas Mei (sum 9 through 12) collects 4+3+2+1 = 10 combinations in total.
With this knowledge, deducing the affinities for each contestant comes with ease; Alexa has 10/36, Gayle 16/36, and Mei 10/36 respectively. Due to Gayle's comparatively enhanced likelihood of claiming the post of captain, the overall system is unfair.
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Is the equation 6x-15y=-12 in standard form? Why or why not
Answer:
2x-5y=-4
Step-by-step explanation:
No, the GCF is 3 not 1
3x * -2y= -100
Solve for y and x.
Answer:
x=50/3y
y=50/3x
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Find the indicated angle measures. pls help i’m dyin lol
Answer:
utv = 24° wtx=113°
Step-by-step explanation:
I solved in the picture
hope this helps ^-^
A car’s gas tank will hold 24 gallons when full. The car’s tank is presently 1/3 full. How much more gas will it take to fill the tank?
The additional gas it will take to fill the tank is 16 gallons
How much more gas will it take to fill the tank?From the question, we have the following parameters that can be used in our computation:
Capacity = 24 gallons
Current volume = 1/3 full
This means that
Remaning volume = 1 - 1/3
Evaluate
Remaning volume = 2/3
The additional gas it will take to fill the tank is
Additional = 2/3 * 24
Evaluate
Additional = 16
Hence, the additional gas it will take to fill the tank is 16 gallons
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Answer this equation 3(2-4d)-9dx43((2+4-34.2
please answer incorrectly
Answer:
12+ 23734.9d That's the incorrect answer.
From the top of a 189-ft lighthouse, the angle of depression to a ship in the ocean is 27°. How far is the ship from the base of the lighthouse?
Answer:
Step-by-step explanation:
First, you will need to use angling.
The angle from the ship is 27 degrees. If using the strategy of how you asked the question, you will need to divide 189 by 27.
Which leaves you with the ship being 7-feet away from the base of the lighthouse.
Consider the following scenario: P(E) = 0.4, P(F) = 0.5
a. Find P(E or F) if E and F are disjoint
b. Find P(E or F) if E and F are independent
Part (a)
The term "disjoint" is the same as "mutually exclusive".
If events E and F are disjoint, then we know that P(E and F) = 0. In other words, the two events have nothing in common. Therefore, it's impossible for them both to occur simultaneously.
P(E or F) = P(E) + P(F) - P(E and F)
P(E or F) = 0.4 + 0.5 - 0
P(E or F) = 0.9
Answer: 0.9====================================================
Part (b)
If events E and F are independent, then P(E and F) = P(E)*P(F).
P(E or F) = P(E) + P(F) - P(E and F)
P(E or F) = P(E) + P(F) - P(E)*P(F)
P(E or F) = 0.4 + 0.5 - 0.4*0.5
P(E or F) = 0.4 + 0.5 - 0.2
P(E or F) = 0.9 - 0.2
P(E or F) = 0.7
Answer: 0.7In 1990, the profit of the Gamma company was $11,218,614. Each year after 1990, profits fell by
$12,189 on average. Construct a linear model for this scenario and use it to solve for the profits in
the year 2020. Remember to treat 1990 as x=0. Round your answer to a whole dollar.
The required solution for the profits in the year 2020 is $10452958.
What is equation?
An equation is a mathematical statement that is made up of two expressions connected by an equal sign. Equation, statement of equality between two expressions consisting of variables and/or numbers.
Given:
In 1990, the profit of the Gamma company was $11,218,614.
profits fell by $12,189 on average.
According to given question we have
Initial profit P(x)= $11900848
Fall rate= $48263 per year
The year in between 1990<x<2020
The Equation is
P(x)= 11900848 - (x-1990)*48263,
P(2020)= 11900848- 30*48263
= $10452958
Therefore, the required solution for the profits in the year 2020 is $10452958.
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PLSSS HELPP
IMAVE ATTACHED
Answer:
38\(\sqrt{3}\)
Step-by-step explanation:
6\(\sqrt{5x5x3}\) + 4\(\sqrt{2x2x3}\) We can pull out a pair of 5's and 2's
6(5) \(\sqrt{3}\) + 4(2)\(\sqrt{3}\)
30\(\sqrt{3}\) + 8\(\sqrt{3}\)
38\(\sqrt{3}\)
HELP MEHHHH! I WILL MARK YOU BRAINLIEST! I NEED AN EXPLANATION
This illustrates the rule of large numbers, according to which the sample mean approaches the population mean as the sample size rises.
what is probability ?The likelihood or chance of an occurrence occurring is measured by probability. It is expressed as a number between 0 and 1, with 0 denoting impossibility and 1 denoting certainty of the occurrence. Additionally, probabilities can be stated as percentages, with 0% denoting an improbable event and 100% denoting a specific event. By dividing the number of favourable outcomes by the total number of potential outcomes, the probability of an occurrence is determined.
given
Since there are six potential outcomes and only one of them is a 5, the theoretical probability of rolling a 5 on a fair die is 1/6.
Mya's experimental chance of rolling a 5 after 100 trials is 25/100, which can be expressed as 1/4. Her experimental probability after 200 attempts is 30/200, which can be expressed as 3/20.
This implies that the experimental probability moves closer to the theoretical probability as the number of trials rises.
In other words, Mya's experimental findings get closer to the anticipated theoretical probability the more times she rolls the die.
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The complete question is :- Communicate and Justify Mya rolls a fair die and counts the number of times she rolls a 5. She rolls a 5 on 25 of the first 100 trials. She rolls a 5 on 30 of the first 200 trials. Compare the experimental probability to the theoretical probability after 100 trials and 200 trials. What do you notice? Explain.
Solve the radical equation.
X+4=√x+10
What is the extraneous solution to the radical equation?
O The solution -1 is an extraneous solution.
O Both -1 and -6 are true solutions.
O The solution -6 is an extraneous solution.
O Neither -1 nor -6 is a true solution to the equation.
The answer is c
Step-by-step explanation:
that kind of wording is always misleading.
please give my regards and comments to your teacher.
a square root has ALWAYS 2 solutions : a positive AND a negative one.
in that sense the negative solution to a square root is NOT an extraneous solution.
only any value of x < -10 (to make the argument of the square root negative) as solution would be extraneous.
so, if your teacher wants to say that only the positive solutions of a square root are allowed, it has to be said as an extra definition or by applying the "+" sign to the square root.
so,
x + 4 = sqrt(x + 10)
since the 2 solutions are already given to us, we only need to use them in the equation and see what happens.
x = -1
-1 + 4 = sqrt(-1 + 10)
3 = sqrt(9) = 3 (actually, it is ±3)
so, x = -1 is a real solution.
x = -6
-6 + 4 = sqrt(-6 + 10)
-2 = sqrt(4) = 2 (actually, it is ±2)
so, based on your teacher's expectation of only positive results of the square root (even though it was not stated),
x = -6 is an extraneous solution.
therefore, the third answer (c) is the "correct" answer.
but actually, formally, the second answer (b) is the truly correct answer.
Ivanna received a $70 gift card for a coffee store. She used it in buying some coffee that cost $7.31 per pound. After buying the coffee, she had $26.14 left on her card. How many pounds of coffee did she buy?
the first time in my class or must i forget abt u cos i always indoors and i know ukuthi im not strong so
Help help help please in a hurry!!!!!!!!!!!!!!!!!!!
Answer:D
Step-by-step explanation:
please mark brainliest
what is the z score of x=12 if it is two standard deviations to the right of the mean?
The value of the Z-score will be equal to 2.
What is Z-score?The z score indicates how many standard deviations your score is from the mean.
At the mean position, the standard deviation is 0 now the z score is the measure of the data which is how far from the mean. So the given data is at two standard deviations to the right of the mean so the Z-Score will be 2.
Therefore the value of the Z-score will be equal to 2.
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How many prime numbers are there between 40 and 60
Answer:
20.
Step-by-step explanation:
60 - 40 = 20
Answer:
There are 5 prime numbers between 40 and 60.
Step-by-step explanation:
A prime number is a number that is ONLY divisible by itself and 1 with no remainder. For example 3 can only be divided by 1 or 3 without a remainder left.
Between 40 and 60 there are 5 prime numbers: 41, 43, 47, 53, and 59.
A can of soda can be modeled as a right cylinder. Noah measures its height as 9.2 cm and its radius as 2.6 cm. Find the volume of the can in cubic centimeters. Round your answer to the nearest tenth if necessary.
Answer:
195.4
Step-by-step explanation:
Volume of a right cylinder is:
V = π r² h
where r is radius and h is height.
V = π (2.6 cm)² (9.2 cm)
V = 195.4 cm³
Question 29 The Valley of Ashes symbolizes the emotional turmoil and feelings of the characters the working class who enable the lifestyles of the wealthy the negative economic impact of prohibition laws Gatsby's fears
The Valley of Ashes symbolizes the emotional turmoil and feelings of the characters the working class who enable the lifestyles of the wealthy the negative economic impact of prohibition laws Gatsby's fears organized crime
What is the Valley of Ashes?On the north shore of Long Island, the valley of ashes was a two to three thousand acre marshland that encircled the Flushing River mouth. This small river primarily serves as an inlet into Flushing Bay, which is an arm of the East River, with tidal water flowing through it rather than fresh water.
It is a metaphor for the moral and societal decay brought on by the unrestrained pursuit of wealth, as the wealthy indulge in only their own pleasure. The emotional turmoil and feelings of the characters from the working class that support the lifestyles of the wealthy are symbolized by The Valley of Ashes. the damaging effects of prohibition laws on the economy Gatsby worries about organized crime.
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Find sin 2x, cos 2x, and tan 2x from the given information.
cscx=4,tanx<0.
Answer:
Step-by-step explanation:
Given the expression cosec (x) = 4 and tan(x)< 0
since cosec x = 1/sinx
1/sinx = 4
sinx = 1/4
From SOH, CAH TOA
sinθ = opposite/hypotenuse
from sinx = 1/4
opposite = 1 and hypotenuse = 4
to get the adjacent, we will use the Pythagoras theorem
adj² = 4²-1²
adj² = 16-1
adj ²= 15
adj = √15
cosx = adj/hyp = √15/4
tanx = opposite/adjacent = 1/√15
since tan < 0, then tanx = -1/√15
From double angle formula;
sin2x = 2sinxcosx
sin2x = 2(1/4)(√15/4)
sin2x = 2√15/16
sin2x = √15/8
for cos2x;
cos2x = 1-2sin²x
cos2x = 1-2(1/4)²
cos2x = 1-2(1/16)
cos2x= 1-1/8
cos2x = 7/8
for tan2x;
tan2x = tanx + tanx/1-tan²x
tan2x = 2tanx/1-tan²x
tan2x = 2(-1/√15)/1-(-1/√15)²
tan2x = (-2/√15)/(1-1/15)
tan2x = (-2/√15)/(14/15)
tan2x = -2/√15 * 15/14
tan2x = -30/14√15
tan2x = -30/7√15
rationalize
tan2x = -30/7√15 * √15/√15
tan2x = -30√15/7*15
tan2x = -2√15/7