Answer:
The answer is
C. The mapping represents y as a function of x, because each x-value corresponds to exactly one y-value.
Step-by-step explanation:
In mathematics, mapping is used synonymously to a function, and a function is basically a relation between two values or expressions say y and x
like the difference equation relating y and x.
In a function, for every value of x plugged into the function there is always a corresponding value of y.
Example.
Given the function
y=2x+5.
find the value of y when x=0
we are going to substitute x=0 and solve
y=2(0)+5
y=5
so for x=0 y=5
True or false. The solution to an equation in two variables such as y = 3x - 9 is the value of x that makes the equation true.
ok wait i think you are in my math class lol... this is on my quiz i just took
In the transformed quadratic function
vertex point is
g(x) = 3(x – 5)2 - 4 , the
O (5, 4)
O (3, -4)
o (-5, -4)
(5,-4)
Answer:
(5, -4)Step-by-step explanation:
f(x) = a(x - h)² + k ← the vertex form of quadratic function where vertex is: (h, k)
[tex]\left{\big{f(x)=a(x-h)^2+k}\atop \big{g(x)=3(x-5)^2-4}\right\}\implies a=3\,,\ \underline{h=5\,,\ k=-4}[/tex]
When an article is sold at a discount of 10 %, a profit of Rs 8 is earned. If the same
article is sold without allowing a discount, there will be a profit of Rs 20. Find the cost price of the article.
Answer:
Market Price = MP
Cost Price = CP
P1 = (MP - 10%) - CP = Rs8
- CP = Rs8 - 0.90% MP
CP = 0.90 MP - Rs8
P2 = MP - CP = Rs20
- CP = Rs20 -MP
CP = MP - Rs20
0.90 MP - Rs8 = MP - Rs20
- 0.10% MP = - Rs12
0.10% MP = Rs 12
MP = Rs120p
CP = MP - Rs20 = Rs120 - Rs20 = Rs100.
The cost price of the item is Rs100.
Step-by-step explanation:
Hope this helps u
Crown me as brainliest:)
f(x) = -4x + 5
g(x) = x2 + 3x
Answer:
f(x)=21
g(x)= x^3+x^2
Step-by-step explanation:
after taking a test, mias grade dropped from 85% to 81%
Answer:
I would say Jessica
Step-by-step explanation:
Because Mia's grade dropped by 4% and Jessica's grade increased by 5%
1% difference in the grades
2x - 4 = 7x - 34 could u help thanks
Answer:
2x-4= 7x-34
30=5x
6=x
Step-by-step explanation:
bring the variables to one side and numbers to the other by either subrtracting or adding depending on the values.
now divide 5 on both sides
now you have the answer
I hope this helps!
.322222222
Turn the repeating decimal into a fraction
Answer:
29/90
Step-by-step explanation:
What is the solution to the equation –5w + 3 = 4w – 6?
Answer:
-2=2
Step-by-step explanation:
Answer:
w = 3
Step-by-step explanation:
-5w + 3 = 4w - 6
were going to get the variable and the numbers on different sides
-5w + 3 - 3 = -5w
4w - 6 - 4w = -6
-5w + 4w = -1w or -w
-6 + 3 = -3
-w = -3
and since there're both negatives you can just take that away and you get
w = 3
In Akutan, Alaska, men are 77% of the population. It is also known 11.3% of
Akutan males smoke cigars while 2.1% of Akutan females smoke cigars. One
member of the population is selected at random for a survey involving cell
phone carriers
Express the cigar smoking data as conditional probabilities.
Find the
probability that the selected subject does not smoke cigars given that the
subject is male
Answer:
Kindly check explanation
Step-by-step explanation:
Given the following :
Proportion of males, P(M) = 77% = 0.77
Proportion of females = ( 1 - proportion of males) = (1 - 0.77) = 0.23
Percentage of males who smoke cigar = 11.3% = 0.113
Percentage of female who smoke cigar = 2.1% = 0.021
Expressing cigar smoking Data as conditional probability :
P(male and smoking) = P(M n C) = 0.113
P(Female and smoking) = P(F n C) = 0.021
Probability of smoking cigar Given the person is a male :
P(C | M) = P(M n C) / P(M)
Probability of smoking cigar Given person is a female :
P(C | F) = P(F n C) / P(F)
Find the probability that the selected subject does not smoke cigars given that the subject is male?
No smoking Given Male = 1 - P(C | M)
P(C | M) = P(M n C) / P(M)
P(C | M) = 0.113 / 0.77
P(C | M) = 0.1467
1 - P(C | M)
1 - 0.1467
= 0.8533
Find the circumference and area of a circle with radius 6 m. Use the value 3.14.
Answer:
Area = 3.14 * 62 = 36 * 3.14
Circumference = 3.14 * (2 * 6) = 3.14 * 12
Solve each quadratic equation by completing the square.
6x2 – 28x = - 16
Answer:
There is no real solutionStep-by-step explanation:
[tex]6x^2-28x = - 16\\\\6x^2-28x + 16=0\\\\3x^2-7x+8=0\\\\9x^2-21x+24=0\\\\(3x)^2-2\cdot3x\cdot\frac72+(\frac72)^2-(\frac72)^2+24=0\\\\(3x-\frac72)^2-\frac{49}4+24=0\\\\(3x-\frac72)^2-12\frac{1}4+24=0\\\\(3x-\frac72)^2+12\frac{3}4=0\\\\(3x-\frac72)^2=-12\frac{3}4[/tex]
What does x equal in 5-4(-x-3/2)5(-6x-6/5)+10x
Answer:
Step-by-step explanation:
HURRY!! THIS ASSIGNMENT IS DUE IN 5MIN!!! THANK YOU!!!!!!
Paula leaves home driving 40 miles per hour. One hour
later, her brother Dan leaves home, driving in the same direction at a speed of 50 miles per hour. How long will it take Dan to catch up to Paula?
what is 2400000 in standard form
Answer:
24*10^5
Step-by-step explanation:
Answer:
2400000 is already in its standard form.
But its form in scientific notation is
2.4 × 10^6
Step-by-step explanation:
Count the zeros until you reach between 2 and 4 then put a decimal point there.
Approximate √60 to the nearest tenth with step by step directions please! And thanks!
Answer:
7.7 is the answer
Step-by-step explanation:
(credit to manics.info)
Step 1:
Calculate the square root of 60 to be:
√60 = 7.74596669241483
Step 2:
Reduce the tail of the answer above to two numbers after the decimal point:
7.74
Step 3:
Round 7.74 so you only have one digit after the decimal point to get the answer:
7.7
To check that the answer is correct, use your calculator to confirm that 7.72 is about 60.
Hope this help and have a great day!
PLS HELP! I'LL MAKE YOU BRAINLIEST!
Answer:
y = mx + b slope(m) = 1/2 (-2,1)...x = -2 and y = 1 now we sub and solve for b, the y int 1 = 1/2(-2) + b 1 = -1 + b 1 + 1 = b 2 = b so ur equation is : y = 1/2x + 2 <== here is one answer y - y1 = m(x - x1) (slope(m) = 1/2 (-2,1)...x1 = -2 and y1 = 1 now we sub y - 1 = 1/2(x - (-2) = y - 1 = 1/2(x + 2) <== here is another answer
Step-by-step explanation:
What is the greatest common divisor of 6 and 4?
Answer:
2 i think
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
2 is the highest number that can divide betwwen 6 and 4.
helpp pleaseee <3 !
Answer:
I belive the first one is 5:7 And the second one is 7:12
Step-by-step explanation:
The temperature in Antarctica during the winter can average -42.3 degrees Celsius. During the summer it can average around 11.52 degrees Celsius. What is the difference between the two temperatures?
Answer:
-30.78!
Step-by-step explanation:
given the equation y=23x,whats the value of x if y=100
Answer: 4.3478 or 100/23
Step-by-step explanation:
Set the y values equal to each other since they are the same unknown (x). You end up with 100=23x, solve for x. Move the 23 over to the other side by using division. x=100/23. If you need it in decimal form, 100÷23=4.347826087
Answer:
4.3=x
Step-by-step explanation: y=23x
substitute the variable y to 100. Now the equation looks like this 100=23x. Your next step is to get get x by itself, so you would divide 23 on both sides. That would cancel out the 23 x. The only thing you have to do now is 100 divided by 23 and that would be 4.3 and a whole bunch of number so you just round it to the nearest tenth. You answer would be 4.3.
Which of the following is theGiven the equation 2square root of x minus 5 = 2, solve for x and identify if it is an extraneous solution. radical expression of a to the five sevenths power?
Solve the equation f(x)= g(x) algebraically.
f (x)= In e2x+2
g(x)= 3x - 3
What is the graph of
5x - 2y = 20?
Answer:
Graph D
Step-by-step explanation:
5x-2y=20
-2y=-5x+20
y=5/2x-10
Hope this helps!
Solve each equation.
7(1 +4n) - 5=-38 + 8n
Answer:
B) n=-2
Step-by-step explanation:
First, distribute.
7(1+4n)-5=-38+8n
7+28n-5=-38+8n
Combine like terms.
2+28n=-38+8n
To make solving the equation easier, subtract 8n first, so there isn't a negative variable.
2+28n=-38+8n
-8n -8n
2+20n=-38
Subtract 2 on both sides.
2+20n=-38
-2 -2
20n=-40
Divide by 20 on both sides.
20n=-40
/20 /20
n=-2
Hope this helps!! Have a wonderful day :3
0= (x-1)^2 -4 and and show explanation please
Answer:
x=-1, x=3
Step-by-step explanation:
to solve by factoring:
1. swap the sides:
0=(x-1)^2-4
2. expand the expression:
(x-1)^2-4=0
3. rewrite and calculate:
x^2-2x+1-4=0
4. factor
x^2+x-3x-3=0
5. Factor... again
x(x+1)-3(x+1)=0
6. separate
(x+1) (x-3)=0
7. solve
x+1=0, x-3=0
8. and you end up with 2 solutions
x=-1, x=3
Which of the following expressions simplifies to −abcd, where a, b, c and d are real numbers?
A. (−a)∙b∙(−c)∙d
B. (−a)∙b∙(−c)∙(−d)
C. a∙(−b)∙(−c)∙d
D. (−a)∙(−b)∙(−c)∙(−d)
Answer:
Step-by-step explanation:
J
Answer:
D
Step-by-step explanation:
just took this test
The midpoint of AB is M(0, -3). If the coordinates of A are (2, 1), what are the
coordinates of B?
Answer:
(-2,-7)
Step-by-step explanation:
What is the rational number that is equivalent to a -24 / -6
Answer:
4
Step-by-step explanation:
hi! let's divide -24 and -6 to simplify this. this is the same answer as 24/6 since two negatives that are divided by each other equal a positive number, and 24 divided by 6 is 4, so the answer is 4.
6x - 2y= 18
Find the x-intercept and the y-interc
Then use them to graph the line.
x-intercept(s): (3,0)
y-intercept(s): (0,−9)
Answer:
The x is -3 and the y is -9 so the answer is (-3,-9)
Step-by-step explanation:
6x-2y=18
-6x -6x
-2y=-6x+18
-2y/-2=-6x/-2+18/-2
y= -3x -9
To graph you just mark it at -9 and go down 3 up 1; or you could go up 3 down 1
Hope this helps :) Have a wonderful day and wish you luck on your test :)
-6a - 4(a - 3) = -6a + 15
Step-by-step explanation:
-6a - 4(a - 3) = -6a + 15
=> -6a - 4a + 12 + 6a - 15 = 0
=> -4a - 3 = 0
=> -4a = 3
=> a = -3/4
