Answer:
(- 2, [tex]\frac{5}{3}[/tex] )
Step-by-step explanation:
y = [tex]\frac{2}{3}[/tex] x + 3 → (1)
x = - 2
substitute x = - 2 into (1)
y = [tex]\frac{2}{3}[/tex] × - 2 + 3 = - [tex]\frac{4}{3}[/tex] + [tex]\frac{9}{3}[/tex] = [tex]\frac{5}{3}[/tex]
solution is (- 2, [tex]\frac{5}{3}[/tex] )
the area of 4 walls of a room is 120 m^2. if the length and breadth are 7m and 5m respectively, find the height.
=========================================================
Explanation:
The floor is a 7 meter by 5 meter rectangle. The perimeter is
P = 2(L+W)
P = 2(7+5)
P = 2(12)
P = 24
The perimeter of the floor is 24 meters.
Multiply this perimeter by the unknown height h to get 24h
This expression represents the lateral surface area. This is the combined wall area. Set this equal to 120 and solve for h.
24h = 120
h = 120/24
h = 5
-----------------
Check:
One pair of walls is 7 meters by 5 meters, giving an area of 7*5 = 35 square meters each. So far that's 2*35 = 70 square meters for these two walls combined.
The other pair of walls is 5 by 5. Each has an area of 5*5 = 25 which doubles to 2*25 = 50
The total wall area is 70+50 = 120 to confirm the answer.
Use the Pythagorean identity
to find cos X.
15
19
?]√
sin x =
COS X =
Answer:
Step-by-step explanation:
So sin is defined as [tex]\frac{opposite}{hypotenuse}[/tex]. and cosine is defined as [tex]\frac{adjacent}{hypoteunse}[/tex]. So we need the adjacent side. Since we already have the opposite, and hypotenuse, you can use the Pythagorean identity to solve for the missing side: [tex]a^2+b^2 = c^2[/tex]
[tex]15^2 + b^2 = 19^2[/tex]
[tex]225 + b^2 = 361[/tex]
[tex]b^2 = 136[/tex]
[tex]b = \sqrt{136}[/tex]
[tex]b = \sqrt{4} * \sqrt{34}[/tex]
[tex]b = 2\sqrt{34}[/tex]
This is the adjacent side, so now plug this into the cosine equation and you get: [tex]\frac{2\sqrt{34}}{19}[/tex]
The perimeter of an equilateral triangle is 38 centimeters. Find the length of an
altitude of the triangle. Round to the nearest tenth.
Answer:
11.0 cm
P=38 cm
38/3=12.67cm length of one side
Base of triangle = 12.67/2 =6.34 cm
Use formula [tex]a^2+b^2=c^2[/tex]
[tex]6.34^2+x^2=12.67^2\\\\=11.0 cm[/tex]
x = altitude of triangle
X=
Help me please! Thanks so much
In the given diagram, the value of x is 15
Circle GeometryFrom the question, we are to determine the value of x
From one of the circle theorems, we have that
Opposite angles of a cyclic quadrilateral are supplementary.
Thus, in the diagram
5x + 7x = 180°
12x = 180°
x = 180°/12
x = 15
Hence, the value of x is 15
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A florist made 4 bouquets of flowers. each bouquet had "c" carnations and 9
daisies. 4(c+9) this expression can be used to represent the total number of flowers the florist used for the bouquets.
The equivalent expression without parenthesis that can be used to determine the total number of flowers the florist used is 4c + 36
How to find equivalent expression?The equivalent expression without parenthesis that can be used to determine the total number of flowers the florist used.
total number of flower the florist used for the bouquet = 4(c + 9)
Therefore,
total number of flower the florist used for the bouquet = 4c + 36
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(5 - 1/2- 2)x^2 + ( 1/5 + 1/2 - 1/3 )x + (5/2 - 1/3 - 1/6 ) =
Answer:
Step-by-step explanation:
Answer:
The answer is
5/2x^2+11/30x+2
[tex] \frac{5}{2}x ^{2} + \frac{11}{30} x + 2[/tex]
Lisandro fabrica juguetes. Si tiene 100 ruedas ¿Cuantos autos puede armar?
Me aydan porfa
Answer:
25
Step-by-step explanation:
un carro tiene 4 ruedas, entonces divide 100 por 4
100÷4=25
Please help ASAP
Please help ASAP
Please help ASAP
Please help ASAP
The volume of the rectangular box is 12 cubic inches
Volume of a boxThe formula for measuring the volume of a rectangular box is expressed as:
V = lwh
l is the length
w is the width
h is the height
Given the following
l = 2in
w = 3in
h = 2in
Substitute
V = 2* 3 * 2
V = 12 cubic inches
Hence the volume of the rectangular box is 12 cubic inches
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how do you find the angle of 2/5ths of a circle
Answer:
You divide 360 by 5 which is 72 & Then muiltiply that by 2.
Your answer would be 144 tho.
Can someone help me please
measure of angle B = 37 degrees, a = 12, b = 15. Find the measure of angle A to the nearest degree.
Answer: 28.78
Step-by-step explanation:
[tex]\frac{\sin A}{a}=\frac{\sin B}{b}\\\\ \sin A=\frac{a \sin B}{b}\\\\\sin A=\frac{12 \sin 37^{\circ}}{15}\\\\\sin A=0.481452...\\\\A \approx 28.78^{\circ}, 151.21^{\circ}[/tex]
However, we disregard the second case, giving 28.78 degrees.
9 burgers and 1 doughnut cost $31.30. 3 doughnuts and 6 burgers cost $26.70. Find the cost of 2 burgers.
Step-by-step explanation:
Let assume that
Cost of 1 burger = $ x
Cost of 1 doughnuts = $ y
According to statement, 9 burgers and 1 doughnut cost $ 31.30
[tex]\begin{gathered}\sf \: 9x + y = 31.3 \\ \\ \end{gathered}[/tex]
[tex]\begin{gathered}\sf\implies \sf \: y = 31.3 - 9x - - - (1) \\ \\ \end{gathered}[/tex]
According to statement again, 3 doughnuts and 6 burgers cost $ 26.70
[tex]\begin{gathered}\sf \: 6x + 3y = 26.7 \\ \\ \end{gathered}[/tex]
[tex]\begin{gathered}\sf \: 3(2x + y) = 26.7 \\ \\ \end{gathered}[/tex]
[tex]\begin{gathered}\sf \: 2x + y = 8.9 \\ \\ \end{gathered}[/tex]
On substituting the value of y from equation (1), we get
[tex]\begin{gathered}\sf \: 2x + 31.3 - 9x = 8.9 \\ \\ \end{gathered}[/tex]
[tex]\begin{gathered}\sf \: 31.3 - 7x = 8.9 \\ \\ \end{gathered}[/tex]
[tex]\begin{gathered}\sf \: - 7x = 8.9 - 31.3 \\ \\ \end{gathered}[/tex]
[tex]\begin{gathered}\sf \: - 7x = - 22.4 \\ \\ \end{gathered}[/tex]
[tex]\begin{gathered}\bf\implies \: x = 3.2 \\ \\ \end{gathered}[/tex]
So,
Cost of 2 burgers = 3.2 × 2 = $ 6.4
[tex] \qquad \qquad \bf \huge\star \: \: \large{ \underline{Answer} } \huge \: \: \star[/tex]
2 burgers cost $ 6.40[tex]\textsf{ \underline{\underline{Steps to solve the problem} }:}[/tex]
We need to make linear equations, to solve this problem.
let the cost of each burger be x, and that of each doughnut be y.
[tex] \qquad❖ \: \sf \:9x + y = 31 .30[/tex]
[tex] \qquad❖ \: \sf \:y = (31 . 30 - 9x)[/tex]
put value of y in other equation.
[tex] \qquad❖ \: \sf \:6x + 3y = 26.70[/tex]
[tex] \qquad❖ \: \sf \:6x + 3(31.3 - 9x) = 26.70[/tex]
[tex] \qquad❖ \: \sf \:6x + 93.90 - 27x = 26.70[/tex]
[tex] \qquad❖ \: \sf \:6x - 27x = 26.70 - 93.90[/tex]
[tex] \qquad❖ \: \sf \:27x - 6x = 93.90 - 26.70[/tex]
[tex] \qquad❖ \: \sf \:21x =67 .20[/tex]
[tex] \qquad❖ \: \sf \:x = 67.20 \div 21[/tex]
[tex] \qquad❖ \: \sf \:x = 3.20[/tex]
So, cost of each burger is x = $ 3.20
[tex] \qquad \large \sf {Conclusion} : [/tex]
Therefore, cost of two burgers is :
2 × 3.20 = $ 6.40f(x)=x^2(x+2)(x-2)(x-5) has zeros at x=-2, x=0, x=2 and x=5. what is the sign of f on the interval -2
Answer:
f is sometimes positive and sometimes negative on the interval
Step-by-step explanation:
So if you were to expand out the x's you would have x^2 * x * x * x which will result in x^5. and because the leading coefficient is positive, it will be going towards positive infinity as x goes towards positive infinity, and because the degree is odd the end behaviors will be opposite, so as x goes towards negative infinity the value of f(x) will be going towards negative infinity. One other thing to note is that because x^2 technically is two zeroes, with the same value, the zero at x=0 has a multiplicity of 2, meaning that it will not cross the x-axis, but rather have a turning point, once it intersects the x-axis, because the zero has an even multiplicity. Given this information we can draw a graph. So as you can see in the graph, it will sometimes be negative and sometimes positive
The number of bacteria in a culture is expected to grow 82% per hour over the next several hours. The predicted change in the number of
bacteria can be represented by P= 120(1.82) where P is the predicted number of bacteria t hours from now.
To the nearest tenth of a percent, by what percent is the number of bacteria expected to grow by each minute?
O .1%
O 1.0%
O 1.1%
O 1.4%
PLEASE HELP thank you!!!!
Answer:
The answer is C: 3/4
Step-by-step explanation:
Your equation is equal to (3/2)/(4/2) due to absolute value (all numbers are positive even if negative symbol is infront of it) which is equal to 3/4.
Step-by-step explanation:
what is the real problem definition ?
is there now an absolute value around the top "-2", or not ?
in any case, remember, when we divide 2 rational numbers like this :
a/b / c/d
the result is
"outer multiplication" over "inner multiplication" :
a×d / b×c
as alternative you can always also say
a/b / c/d = a/b × d/c = a×d / b×c
so,
if the problem is
3/-2 / |-4/-2|
the result is
3×2 / 4×-2 = 6/-8 = - 3/4
if the problem is
3/|-2| / |-4/-2|
the result is
3×2 / 4×2 = 6/8 = 3/4
please pick the solution based on the actual problem.
Bryce grew 312 inches each year for the past 4 years. how many inches total has bryce grown in the past 4 years?
Add: (-5u5 + 5) + 7u5
Answer:
2u^5+5
Step-by-step explanation:
Drop parenthesis and add like terms.
[tex]7u^{5}-5u^{5}+5=2u^{5}+5[/tex]
Hope this helps!
If not, I am sorry.
What is the range of y equals square root of x +7+5?
The range of a function are the dependent variables for which the function exists. The range of the function will be y ≥ 5
Range of a function
The range of a function are the dependent variables for which the function exists
Given the function below;
f(x) = √x+7 + 5
The function can only exist for values less than or equal to -7 that is x ≤ -7.
Substitute
f(-7) = √-7+7 + 5
f(-7) = 5
The range of the function will be y ≥ 5
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If you anwser the question i give you brainly
A function assigns the value of each element of one set to the other specific element of another set. The correct option is A.
What is the inverse of a function?Suppose that the given function is
[tex]f:X\rightarrow Y[/tex]
Then, if function 'f' is one-to-one and onto function (a needed condition for inverses to exist), then, the inverse of the considered function is
[tex]f^{-1}: Y \rightarrow X[/tex]
such that:
[tex]\forall \: x \in X : f(x) \in Y, \exists \: y \in Y : f^{-1}(y) \in X[/tex]
(and vice versa).
It simply means that the inverse of 'f' is an undone operator, that takes back the effect of 'f'
The graph that represents the inverse of the given function is option A because graph A is showing more rapid growth as compared to the given graph.
Hence, the correct option is A.
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Which interval is the solution set to 0.35x – 4.8 < 5.2 – 0.9x? (–[infinity], –8) (–[infinity], 8) (–8, [infinity]) (8, [infinity])
(-∞,8) is interval is the solution to set 0.35x – 4.8 < 5.2 – 0.9x.
How to solve the inequality?0.35x - 4.8 < 5.2 - 0.9x
Adding 0.9x to both sides of equation.
0.35x - 4.8 + 0.9x < 5.2 - 0.9x + 0.9x
1.25x - 4.8 < 5.2
Adding 4.8 to both sides of equation.
1.25x - 4.8 + 4.8< 5.2 + 4.8
1.25x < 10
Dividing both sides of equation by 1.25
x < [tex]\frac{10}{1.25}[/tex]
Hence x < 8
Thus, (-∞,8) interval is the solution to given set 0.35x – 4.8 < 5.2 – 0.9x.
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Which of the following equations describes the graph? Urgent lol
Answer : I think 3rd is the answer
Use the ratio test to determine whether the series is convergent or divergent. 1+3/1*2*3+5/1*2*3*4*5+…
The [tex]n[/tex]-th term [tex](n\ge1)[/tex] in the series is evidently
[tex]\dfrac{2n-1}{(2n-1)!} = \dfrac{2n-1}{(2n-1)(2n-2)!} = \dfrac1{(2n-2)!}[/tex]
By the ratio test, the infinite series converges, since
[tex]\displaystyle \lim_{n\to\infty} \left| \frac{\frac1{(2(n+1)-2)!}}{\frac1{(2n-2)!}}\right| = \lim_{n\to\infty} \frac{(2n-2)!}{(2n)!} = \lim_{n\to\infty} \frac1{2n(2n-1)} = 0 < 1[/tex]
Theodore started watching a movie at 19:30.
The movie was 1 hour and 56 minutes long, but part-way through he
paused it for 12 minutes.
What was the time when the movie finished?
Give your answer using the 24 hour clock.
The time when movie finished was 21 : 38.
It is given that Theodore started watching movie at 19:30 and length of movie was 1 hour and 56 minutes.
We have to find the time when the movie finished if there was a break of 12 minutes also between movie.
What is algebra ?
Algebra is the branch that deals with various symbols and the arithmetic operations and the symbols are called variables.
As per the question ;
Theodore started watching movie at 19:30.
The length of movie = 1 hour and 56 minutes
Break = 12 minutes
So ;
Total length of running of movie = 2 hours and 8 minutes
The time when movie finished will be ;
= 19 :30 + 2:08
= 21 : 38
Thus , the time when movie finished was 21 : 38.
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help me i dont understand this
The equation of the line passing through the coordinates but with its coordinates interchanged i.e (5, 7) and (9, 11)
Equation of reciprocal of a functionGiven a linear function that contains the coordinate point on its line (5, 7) and (9, 11)
The equation of its reciprocal can be determine by finding the equation of the line passing through the coordinates but with its coordinates interchanged i.e (5, 7) and (9, 11)
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line L has a slope of 9/8 the line through which of the following pair of points is perpendicular to line L
A pair of points which is perpendicular to line L is: D. (3, -5),(-6, 3).
How to calculate the slope of a line?Mathematically, the slope of any straight line can be calculated by using this formula;
[tex]Slope = \frac{Change\;in\;y\;axis}{Change\;in\;x\;axis}\\\\Slope = \frac{y_2\;-\;y_1}{x_2\;-\;x_1}[/tex]
For points A, we have:
[tex]Slope = \frac{3\;-\;(-6)}{3\;-\;(-9)}\\\\Slope = \frac{9}{12}[/tex]
Slope = 9/12.
For points B, we have:
[tex]Slope = \frac{6\;-\;(-2)}{-6\;-\;(-9)}\\\\Slope = \frac{8}{-3}[/tex]
Slope = -8/3.
For points C, we have:
[tex]Slope = \frac{3\;-\;(-6)}{3\;-\;(-5)}\\\\Slope = \frac{9}{8}[/tex]
Slope = 9/8.
For points D, we have:
[tex]Slope = \frac{3\;-\;(-5)}{-6\;-\;3}\\\\Slope = \frac{-8}{9}[/tex]
Slope = -8/9.
In Mathematics, the condition for perpendicularity of two lines is:
m₁ × m₂ = -1
9/8 × 8/9 = -1
Thus, points (3,−5) and (−6,3) are perpendicular to line L.
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Complete Question:
Line L has a slope of 9/8. The line through which of the following pair of points is perpendicular to L?
A. (−9,−6),(3,3)
B. (9,−2),(−6,6)
C. (−5,−6),(3,3)
D. (3,−5),(−6,3)
A six sided die is rolled and a coin is tossed. Find P(odd and T).
The probability of getting tails and rolling an odd number is P = 0.25
How to get the probability?
The probability of getting tails on the coin is 0.5
On the dice, there are 6 numbers and 3 are odd, so the probability of rolling an odd number is:
p = 3/6 = 0.5
The joint probability (of getting tails and rolling an odd number) is equal to the product between the individual probabilities:
P(odd and T) = 0.5*0.5 = 0.25
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For which function is f(5) = 2?
By evaluating the linear function f(x) = x - 3 at x = 5 and discarding the another function in the table given, we conclude that f(5) = 2 belongs to that linear equation.
What function contains a given relationship?
In this problem we must check if the given relationship between the independent variable (x) and the dependent variable (y) exists in any of the two functions: (i) a table, (ii) an expression.
After a quick analysis, we conclude that f(5) = 2 is a point of the linear function f(x) = x - 3. Here is the proof:
f(5) = 5 - 3
f(5) = 2
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Answer:A which is x-3
Step-by-step explanation:
19) Find the surface area of the solid shown that has a square base. 9 in 7 in 3 in
The surface area of the composite shape is: 315 in.².
What is the Surface Area of the Composite Shape?Surface area = surface area of square pyramid + surface area of square prism - 2(base area)
Surface area of square pyramid = Area of base + 1/2(perimeter of base × slant height) = 9² + 1/2[4(9) × 7] = 207 in.²
Surface area of square prism = 2a² + 4ah = 2(9²) + 4(9)(3)
Surface area of square prism = 2(9²) + 4(9)(3) = 270 in.².
Base area = 9² = 81 in.².
Surface area of the composite shape = 207 + 270 - 2(81) = 315 in.².
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Answer:
315 in.²
Step-by-step explanation:
Recall:
area of rectangle = length × width
area of triangle = base × height / 2
Base of prism: 9 in. × 9 in. = 81 in.²
4 sides of prism: 4 × 9 in. × 3 in. = 108 in.²
Lateral area of pyramid: 4 × 9 in. × 7 in. / 2 = 126 in.²
Total area = 81 in.² + 108 in.² + 126 in.² = 315 in.²
Anna has been studying a type of bacteria that triples every month. originally, there were 4 bacterial cells. she wants to know how many there will be after 15 months. which equation should she use?
Anna should use the following equation,
[tex]a_{15} = 4(3)^{15}[/tex]
Equation for Determining the Number of Bacterial Cells
Initially, the count of bacterial cells = 4
It is given that the bacterial cell triples every month.
Hence, the equation for the count of bacterial cells after first month is,
a₁ = 4(3)
This count of 4(3) triples again in the second month.
So, after the second month, the equation for the count of bacterial cells is given by,
a₂ = 4(3)(3) = 4(3)²
Calculating the Count of Bacterial Cells For Each Month
Again, this count triples in the third month.
Therefore, the equation for the count of bacterial cells after the third month becomes,
a₃ = 4(3)(3)(3) = 4(3)³
This count triples again in the fourth month and this process continues till 15 months.
Hence, the equation for determining the number of bacterial cells comes out to be as follows,
a₁₅ = 4(3)¹⁵
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Amy is x years old. Ben is 2 years older than Amy. Alice is six years younger than Amy.
a) Write an expression for Ben's age and Alice's age in terms of x.
Answer:
Step-by-step explanation:
Amy = x years
Ben = x + 2 (years)
Alice = x - 6 (years)
Answer:
a)
Amy's age is x.
• Ben's age is 2 more than Amy's age.
∴ Ben's age = x + 2
• Alice's age is 6 less than Amy's age.
∴ Alice's age = x - 6
take a deck of playing cards form following sets out of those
A=Set of playing cards
B=SET OF RED COLOURED FACE CARD
The information given about the probability shows that the cardinality of D is 18.
How to calculate the probability?From the complete information, the number of red-colored cards is 26.
Also, the number of red-colored number cards will be 18.
The cardinality of a set is a measure of a set's size, meaning the number of elements in the set.
Here, the cardinality of set D is 18.
Here is the complete question:
Take a deck of playing cards. Form following sets out of those:
A = Set of Face Cards
B = Set of Red Coloured Face cards
C = Set of Black Coloured Face Cards
D = Set of Red Coloured Number Cards
Find the Cardinality of set D
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