Answers
Answer:
x + y = 4
substitute (-A, 2B) in the equation.
-A + 2B = 4
substitute (3A-2, 3-B) in the equation
3A-2 + 3-B = 4
Use elimination method and hence multiply the first substituted equation by 3
-3A + 6B = 12
3A-2 + 3-B = 4
-2 + 3 + 5B = 16
5B = 15
B = 3
Substitute value of B in any of the equations
and hence A = 2
Related Questions
The diameter of a circle has endpoints (13,10) and (5,16) Part A: Find the center of the circle Part B: Find the distance of the radius Part C: Write the equation of the circle.
Answers
Answer:
See below ~
Step-by-step explanation:
Part A : Center
Midpoint of diameter pointsM = (13 + 5 / 2, 10 + 16 / 2)M = (9, 13)Part B : Radius
Half of the distance between the points16 - 10 / 26/2radius = 3Part C : Equation
(x - 9)² + (y - 13)² = 3²x² - 18x + 81 + y² - 26y + 169 = 9x² - 18x + y² - 26y + 241 = 018. Find the area of each regular polygon. Round your answer to the nearest tenth if necessary.
19. Use the information provided to write the equation of each circle.
20. 21. State if the two triangles are congruent. If they are, state how you know.
22. 23. Find the value of each trigonometric ratio.
Answers
Answer:
Step-by-step explanation:
PLEASE HELP <3 Figure out which ones best fit the graph
Answers
The scenario that match this graph is 12 gallons are presently in the bath tube draining at 3 gallons per minute.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
From the graph using points (0, 12) and (4, 0):
y intercept = 12; slope = (0 - 12)/(4 - 0) = -3
The scenario that match this graph is 12 gallons are presently in the bath tube draining at 3 gallons per minute.
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Overall, about how many students prefer literature (poems, plays, or novels)?
I need help i sent in the graph
Answers
Answer:
3/8 or 37.5 percent, if there were 200 students there would be 75 students who enjoy literature.
Which situation best describes conditional probability?.
Answers
Using it's concept, it is found that the situation that best describes conditional probability is given by:
4. Finding the probability of an event occurring given another event had already occurred.
What is Conditional Probability?Conditional probability is the probability of one event happening, considering a previous event. The formula is:
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]
In which:
P(B|A) is the probability of event B happening, given that A happened.[tex]P(A \cap B)[/tex] is the probability of both A and B happening.P(A) is the probability of A happening.The key-word is previous, that is, we have to consider a previous event that already happened. Hence, researching the problem on the internet, the correct option is given by:
4. Finding the probability of an event occurring given another event had already occurred.
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please awnser quickly
Answers
Answer:
B': (-8,2)
C':(-8,9)
D':(-5,4)
Step-by-step explanation:
If im wrong pls tell me!
The dual bar chart shows the hair colour of boys and girls in a year group.
20
18
16
14
12
10
8
6
4
Black
Brown
Blonde
What fraction of the students are girls?
Give your answer in its simplest form
Frequency
20
Hair colour
Red
Boys
Girls
Answers
please solve this problem using the pythagorean theorem, and give me the right answer and I will give you brainliest. :)
Answers
Answer:
its 1.6
Step-by-step explanation:
2 squared minus 1.2 squared is 2.56
the square root of that is 1.6
Handedness: 18 left-handed
22 right-handed
The incomplete table above summarizes the number of left-handed students and right-handed students by gender for the eighth grade students at Keisel Middle School. There are 5 times as many right-handed female students as there are left-handed female students, and there are 9 times as many right-handed male students as there are left-handed male students. if there is a total of 18 left-handed students and 122 right-handed students in the school, which of the following is closest to the probability that a right-handed student selected at random is female? (Note: Assume that none of the eighth-grade students are both right-handed and left-handed.)
A) 0.410
B) 0.357
C) 0.333
D) 0.250
If shoppers enter a store at an average rate of r shoppers per minute and each stays in the store for average time of T minutes, the average number of shoppers in the store, N, at any one time is given by the formula N=rT. This relationship is known as Little's law.
The owner of the Good Deals Store estimates that during business hours, an average of 3 shoppers per minute enter the store and that each of them stays an average of 15 minutes. The store owner uses Little's law to estimate that there are 45 shoppers in the store at any time.
Little's law can be applied to any part of the store, such as a particular department or the checkout lines. The store owner determines that, during business hours, approximately 84 shoppers per hour make a purchase and each of these shoppers spend an average of 5 minutes in the checkout line. At any time during business hours, about how many shoppers, on average, are waiting in the checkout line to make a purchase at the Good Deals Store?
Answers
Answer:
Let x be the number of left handed female students and let y be the number of left handed male students.
Then the number of right handed female students will be 5x and the number of right handed male students will be 9y. Since the total number of left handed students is 18 and the total number of right handed students is 122, the following system of equations must be satisfied.
x+y=18 and 5x+9y=122
Solving this system gives x=10 and y=8.
Thus, 50 of the 122 right handed students are female. Therefore, the probability that a right handed student selected at random is female is the fraction 50/122
which to the nearest thousandth is 0.410.
T is average time spend by shoppers in minutes
N average number of shoppers.
Here, shoppers/hour =84.
Hence r=
60
84
T=5
Hence N=rT=
60
84
×5=7
Average number of shoppers waiting at checkout =7
Answer:
EMMA ITS KAIDN. text back.
Step-by-step explanation:
I had already answered this.
3. What is the best description of an isosceles triangle?
a triangle with a right angle
a triangle with all equal sides
a triangle with no equal sides
a triangle with two equal sides
Answers
Answer:
a triangle with two equal sides
Step-by-step explanation:
77. the volume of a cube is increasing at a rate of [tex]10 \mathrm{~cm}^{3} / \mathrm{min}[/tex] . how fast is the surface area increasing when the length of an edge is [tex]30 \mathrm{~cm} ?[/tex]
Answers
Answer:
[tex]\displaystyle \frac{4}{3}\text{cm}^2/\text{min}[/tex]
Step-by-step explanation:
Given
[tex]\displaystyle \frac{dV}{dt}=10\:\text{cm}^3/\text{min}\\ \\V=s^3\\\\SA=6s^2\\\\\frac{d(SA)}{dt}=?}\:;s=30\text{cm}[/tex]
Solution
(1) Find the rate of the cube's edge length with respect to time at s=30:
[tex]\displaystyle V=s^3\\\\\frac{dV}{dt}=3s^2\frac{ds}{dt}\\ \\10=3(30)^2\frac{ds}{dt}\\ \\10=3(900)\frac{ds}{dt}\\\\10=2700\frac{ds}{dt}\\\\\frac{10}{2700}=\frac{ds}{dt}\\\\\frac{ds}{dt}=\frac{1}{270}\text{cm}/\text{min}[/tex]
(2) Find the rate of the cube's surface area with respect to time at s=30:
[tex]\displaystyle SA=6s^2\\\\\frac{d(SA)}{dt}=12s\frac{ds}{dt}\\ \\\frac{d(SA)}{dt}=12(30)\biggr(\frac{1}{270}\biggr)\\\\\frac{d(SA)}{dt}=\frac{360}{270}\biggr\\\\\frac{d(SA)}{dt}=\frac{4}{3}\text{cm}^2/\text{min}[/tex]
Therefore, the surface area increases when the length of an edge is 30 cm at a rate of [tex]\displaystyle \frac{4}{3}\text{cm}^2/\text{min}[/tex].
Ali divided one fruit cake equally among six persons. What part of the cake he gave to each person?
Answers
Step-by-step explanation:
when we divide something equally among n people, it means we divide it equally into n parts, and every part is 1/n or 1 nth.
so, for six people or parts, everybody got 1/6 or 1 sixth of the cake.
The Stock Market Nadia is a stockbroker. She earns 14% commission each week. Last week, she sold $6,800 worth of stocks. How much did she make last week in commission? If she averages that same amount each week, how much did she make in commission in 2011?
Answers
Answer:
she earns $1008 in commissions , hope this helps i did it
Which is a stretch of an exponential decay function? f(x) = one-fifth (one-fifth) superscript x f(x) = one-fifth(5)x f(x) = 5one-fifth f(x) = 5(5)x
Answers
The exponential function that represents a stretch of a decay function is given as follows:
[tex]f(x) = \frac{5}{4}\left(\frac{4}{5}\right)^x[/tex]
What is an exponential function?An exponential function is modeled by:
[tex]y = ab^x[/tex].
In which:
a is the initial value.b is the rate of change.It represents a stretch if a > 1, and a decay function if b < 1. Researching the problem on the internet, the correct option is given as follows:
[tex]f(x) = \frac{5}{4}\left(\frac{4}{5}\right)^x[/tex]
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Answer:
the answer is C :)
Step-by-step explanation:
Translate the following sentence into an equation: "Seven added to eight times a number is three less than
twice the number."
?
Answers
[tex]let\ x\ be\ the\ unknown\ number[/tex]
[tex]8x+7=2x-3[/tex]
first choose a variable to represent the number.
when something is "..." times a number, we are multiplying that number by that value.
"seven added to eight times a number" means that we are multiplying the number by eight (8x) and then adding seven to it (+7).
"is" usually means 'equals to' so we put an equal sign there.
"three less than twice the number" means that we are multiplying the number by two (2x) and then subtracting three from it (-3).
An equation form of given statement is, 7 + 8m = 3 - 2m where m is any real valued number.
What is an equation?"It is a mathematical statement which consists of equal symbol between two mathematical expressions."
For given question,
We have been given a statement.
We need to translate given statement into a equation.
Seven added to eight times a number is three less than twice the number.
Let 'm' be any real number.
We can rewrite above statement as,
Seven plus to eight times 'm' is three minus twice 'm'.
⇒ 7 + 8 × m = 3 - 2 × m
So, we get an equation,
⇒ 7 + 8m = 3 - 2m
Therefore, an equation form of given statement is, 7 + 8m = 3 - 2m where m is any real valued number.
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the perimeter of a rhombus whose sides are 12 units in length is:
48
144
192
Answers
Answer:
48
Step-by-step explanation:
12*4=48
Can someone please help me with my math
Answers
Answer:
She has enough to make 4 batches of peanut butter and 6 batches of chocolate chip.
Step-by-step explanation:
26/2 = 13. There's enough flour to make the recipe 13 times over, however,
she only has the amount of butter to make a dozen of the first recipe. 9 divided by (3/4) = 12.
26/3 = 8.6, or 8 and 3/4ths of a batch with the flour. She has enough butter to make 9, but not enough flour, so she could make 8 batches of chocolate chip cookies.
She can make 12 batches of peanut butter cookies alone. Or she could make 8 batches of chocolate chip cookies alone. This means: It can't be C because she doesn't even have enough ingredients to make 22 batches of chocolate chip. It also can't be D because there's not enough ingredients for 28 batches of peanut butter or 12 chocolate chip.
to make 4 batches of PB:
[tex](4)\frac{3}{4}=3[/tex] cups of butter needed, and 4(2) = 8 cups flour needed.
so now she'd have 6 cups butter and 18 cups flour leftover.
This means, to make 6 batches CC:
3(6) = 18 cups flour, and 1(6) = 6 cups butter needed. She has enough to make 4 batches of peanut butter and 6 batches of chocolate chip.
The top of a glass coffee table is a circle. the circumference is 15.7 feet. what is the area of the table? helppp!!
Answers
Answer:
19.61505096...
Step-by-step explanation:
Area in a circle is pi(ratio)squared
Circumference is pi multiplied by diameter
Ratio is half of diameter
15.7 divided by pi is roughly 5 (4.997465213 to be exact)
Half of 5 is 2.5
pi(2.5)squared is 19.61505096...
Use the diagram to determine which of the statements must be true.
No lines are parallel.
c∥d
a∥b
c∥e
a∥c
d∥e
a∥e
b∥d
Answers
Answer:
d∥e
Step-by-step explanation:
The figure shows that line e is perpendicular to line b, and line d is perpendicular to line b.
Theorem: If two lines are perpendicular to the same line, then the lines are parallel.
Since lines d and e are perpendicular to the same line, b, then lines d and e are parallel.
Answer: d∥e
Please help!
A card is selected at random from the set of cards below.
A sample space for the experiment is {F, G, H, J, K, L, M}. Let W represent the event “the card is white”, let S represent “the card is shaded”, and let E represent “the number is even”. Select all that apply.
A. The event S is {F, H, K, L, M}.
B. The event not E is {F, G, H, M}.
C. The event S or E is {F, H, J, K, L, M}.
D. The event S and E is {K, L, M}.
E. P(W or S) = 1
F. P(W and S) = 1
Answers
Answer:
See below ~
Step-by-step explanation:
True Statements
A. The event S is {F, H, K, L, M}.C. The event S or E is {F, H, J, K, L, M}.D. The event S and E is {K, L, M}.E. P(W or S) = 1what is the probability of drawing a king and a diamond from a standard deck of cards
Answers
Answer:
P(king or diamond) = P(king) + P(diamond) - P(king and diamond) P(king or diamond) = (4/52) + (13/52) - (1/52) P(king or diamond) = 16/52 Page 5 P(king or diamond) = 4/13.
list all the possible order you can have
Answers
wala ako pake sau
Step-by-step explanation:
wala ako pake sau
emergency!!
Write the function f(x)=x² – 25x in the form f(x) = a(x - h)? +k. Identify the vertex.
Answers
Answer:
See below
Step-by-step explanation:
Complete the square
[tex]f(x)=x^2-25x\\\\f(x)+(\frac{-25}{2})^2=x^2-25x+(\frac{-25}{2})^2\\\\f(x)+156.25=x^2-25x+156.25\\\\f(x)+156.25=(x-12.5)^2\\\\f(x)=(x-12.5)^2-156.25\\\\f(x)=(x-\frac{25}{2})^2-\frac{625}{156}[/tex]
Identify vertex
[tex](h,k)\rightarrow(-\frac{25}{2},-\frac{625}{156})[/tex]
nd Distances in the Coordinate Plane
What is the distance between the points (4, 7) and (4,-5)?
0 units
O2 units
O4 units
12 units
Answers
Answer:
12 units
Step-by-step explanation:
(4, 7) and (4, -5)
7-(-5)=12
4-4=0
Can you solve all please
Answers
B) 3
C) 3
D) 3
I think those are the first four
Answer:
A) 3
B) 3
C) 3
D) 3
I think those are the first four
Step-by-step explanation:
The area of the following composite figure is 125 square centimeters. What is the value of b?
9 cm
13 cm
14 cm
12 cm
Answers
Answer:
b=125
Step-by-step explanation
9cm x 14 - 1 = 125
I need help asap!!!
Answers
Answer:
x-30+x+50=180(being co interior angle)
2x+20=180
2x=180-20
x=160/2
x=80
putting the value of x in x-30
80-30=50
again
y+50=180(being co interior angle)
y=180-50
y=130
Step-by-step explanation:
hope this will help you
They are same side ineterior so supplementary
x-30+x+50=1802x+20=1802x=160x=80Again
x-30+y=180x+y=21080+y=210y=130At the local nursery, 1/4 of the plants for sale are flowers and another 3/5 of them are bushes. What fraction of the plants for sale are either flowers or bushes?
Answers
Answer:
17/20
Step-by-step explanation:
1/4 +3/5 simplify into:
5/20 + 12/20= 17/20
Eight crore thirty four lakh twenty two thousand fifty seven
Answers
Plsssss helpppppoooooooooopppppppppppppppppppppp
Answers
Answer:
4
Step-by-step explanation:
