Answer: f-1(x) = 9x + 18.
Step-by-step explanation:
let y = f(x) and rearrange making x the subject, that is
y = x - 2 ( add 2 to both sides )
y + 2 = x
Multiply through by 9 to clear the fraction
9y + 18 = x
Change y back into terms of x
(x) = 9x + 18
Answer:
Answer: f-1(x) = 9x + 18.
Step-by-step explanation:
4. Write the modal class of the following frequency distribution:
Class interval
10-20 , 20 - 30 ,30 - 40, 40-50, 50 - 60
Frequency..
33
38
65
52
19
48
The modal class, or mode class, is the class that has the highest frequency. Visually on a bar graph or histogram, it is the bar that is the tallest.
In this case, the highest frequency is 65 which corresponds to the class 30-40. The third frequency is the highest, so the third class is the modal class.
Answer: The interval 30-40 is the modal classThe graph below showed the amount of money Jason saved over a 5 month period.
Part A write an equation that represents the graph
Answer:
owo
Step-by-step explanation:
Please Help Quickly!! 8 points
Select the correct answer.
How many solutions for x does the following equation have?
3(x + 8) − 1 = 3x + 4
A.
4
B.
0
C.
1
D.
infinite
Answer:
pretty much the answer is 7=4 which isnt possible so theres 0 solutions :)
Step-by-step explanation:
Find the sum or the difference a. -2.63+3/1/4
Answer:
-1.88
Step-by-step explanation
Put both terms in decimal form. -2.63 is already in decimal form, so, you only have to put 3 1/4 in decimal form.
So, -2.63+0.75=-1.88
How do you solve this absolute value equation ?
|x + 7| = 3x - 5
Answer:
x=6
Step-by-step explanation:
x+7=3x-5
add 5 to both sides
x+12=3x
subtract x from both sides
12=2x
divide by 2 on both sides
6=x
PLEEASE I REALLY NEED HELP!!!!
Answer:
a) CA because cpctc :) ahsjdne
Describe three situations in which rounding could come in handy.
Answer:
1. They help you with estimation
2. It makes numbers simpler and easier to do
3. Makes mental maths much quicker
d + 12 = 14 - 2d
Find d
Answer:
d = 2/3
Step-by-step explanation:
Answer:
I believe d=0.6666667 or 2/3
Step-by-step explanation:
d=2-2d
3d=2
d=0.66
Jack reads his book for 8 minutes before school and 10 minutes after school. He attends school Monday through Friday. Which equation shows how many minutes Jack reads his book in two weeks? A. (8 × 5) + (10 × 5) = 40 + 50 = 90 minutes B. (8 × 8) + (10 × 10) = 64 + 100 = 164 minutes C. (8 × 10) + (10 × 10) = 80 + 100 = 180 minutes D. (8 × 14) + (10 × 14) = 112 + 140 = 252 minutes
Answer:
(8 × 10) + (10 × 10) = 80 + 100 = 180 minutes
Step-by-step explanation:
It is given that, Jack reads his book for 8 minutes before school and 10 minutes after school.
No of days between Monday to Friday = 5
No of days between Monday to Friday in 2 weeks = 10
We need to find how many minutes Jack reads his book in two weeks.
For 10 days, before school = (8 × 10) min = 80 minutes
For 10 days, after school = (10 × 10) min = 100 minutes
It means, total time will be :
T = (8 × 10) min + (10 × 10) min
T = 80 + 100
T = 180 minutes
Hence, the correct option is (C).
parker jogged 5 kilometers one mile is approximately equal to 2.2 kilometers which measurement is closest to the number of miles parker jogged.
Answer:
the number of miles is 3.107 miles
whats the answer?
what is algebra
Answer;
algebra is the part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formulae and equations
Step-by-step explanation:
whats the question
Carla makes $18.50 per hour. Calculate her earnings for a 30 hour week.
Gross Earnings
Taxes Withheld
Social Security Tax
Gross Pay:
$33.48
Medicare Tax
$7.83
Federal Tax
$65.50
Total Amount of Withholdings/
$21.60
Deductions:
State Tax
Deductions
Net Pay:
Net Earnings
Answer:
Her earnings would be $555
Answer:It's b
Step-by-step explanation:
on a scale, 1 inch represents 600 miles. How many miles does 3/4 represent
What is the slope, the Y-intercept and the equation for this graph??
Answer:
equation of the line: y=1/2x-1
slope :1/2x
y intercept: -1
Step-by-step explanation:
using y1-y2/x1-x2:
-1-0/0-2= -1/-2=1/2
the slope is 1/2.
plug in the numbers from the given points to find the y intercept:
-1=1/2•0+b
b= -1
the y intercept is -1.
with that, you've gotten the slope and the y intercept, which means you just have to plug them into y=mx+b.
so, the equation of the line is y=1/2x-1
A store sells a shirt discounted by 10%. A coupon is used for an additional 10% off the discounted price. What is the total percentage discounted off the shirt? (PLEASE HELP ME)
Answer:
20%
Step-by-step explanation:
is c=2.54n a proportional relationship
Answer:
No
Step-by-step explanation:
Answer:
yes because it is being multiplied by N
need help with this
Answer:
Slope-int form: y = 3x+5
Standard form: y - 3x = 5.
Step-by-step explanation:
(reminder: slope-intercept form is expressed as y=mx+b, and standard form is expressed as ax+bx=c.)
Since the slope is 3, the coefficient of x is also 3, which makes the equation y=3x.
But the y coordinate of the equation at x = -2 is -6, so we need to add 5 to the end of the equation, leaving you with:
y=3x+5.
To convert it to standard form, subtract 3x from both sides:
y - 3x = 5.
I hope this helped you.
8. A line passes through the points (0-2) and (0,5). Is it possible to write an equation of the line in
slope-intercept form? Justify your answer.
Answer: No
Step-by-step explanation:
There is no slope
It is not possible to write the equation of the line passing through (0, -2) and (0, 5), because slope is not defined.
What is Slope?Slope of a line is the ratio of the change in y coordinates to the change in the x coordinates of two points given.
Slope can also be defined as the tangent of the angle that the line is making with the positive X axis.
Given that a line passes through two points (0, -2) and (0, 5).
Both the points are on Y axis.
Therefore the line is along the Y axis.
Slope of a line along the Y axis is not defined since the Y axis is making 90° with the X axis and tan 90° is the slope, which is not defined.
Or in other words, taking the given points,
slope = change in y coordinates / change in x coordinates
= (5 - -2) / (0 - 0)
= 7 / 0, not defined.
Hence the equation of the line along the Y axis cannot be written in the slope intercept form as the slope is undefined.
To learn more about Slope, click :
https://brainly.com/question/29027297
#SPJ2
Dividing integers
-2/15 divided by 11/30
Answer:
-0.36363636363
Step-by-step explanation:
Divide it.
The halfway point between 300,000 and 400,000
Answer:
350,000
Step-by-step explanation:
hope this helped!!!
What is the point slope of a line with the slope 4 that contains the point (-3, -4) ?
A. y + 4 = -4 (x + 3)
B. y - 4 = -4 (x - 3)
C. y - 4 = 4 (x - 3)
D. y + 4 = 4 (x + 3)
Answer:
Correct choice: D.
[tex]y+4=4(x+3)[/tex]
Step-by-step explanation:
The point-slope form of the equation of a line is:
[tex]y-k=m(x-h)[/tex]
Where m is the slope and (h,k) is a point through which the line passes.
According to the question, the slope of a line is m=4 and it contains the point (-3,-4), thus, replacing the values:
[tex]y-(-4)=4(x-(-3))[/tex]
Operating:
[tex]\boxed{y+4=4(x+3)}[/tex]
Correct choice: D.
Mudrik installed a device on his car that
guaranteed to increase his gas mileage
by 15%. He currently gets 22 miles per
gallon. How much will the gas mileage
increase after installing the device?
Answer:
His mileage will increase 3.3 miles to the gallon
Step-by-step explanation:
-1.1 devide by -2 need help with this
Answer:
Step-by-step explanation:
-1.1 divided by -2 would be -3
Answer:
11/20 or 0.55
Step-by-step explanation:
-1.1÷-2=0.55
The platform of a roller coaster is 12 feet off the ground. The first hill rises an additional 102 feet. The first drop is 90 feet. How far off the ground is the rollercoaster after the first drop?
Answer:
The roller coaster is 24 feet above the ground after the first drop.
Step-by-step explanation:
12 feet + 102 feet - 90 feet = 24 feet.
Answer:
The roller coaster is 24 feet above the ground after the first drop.
Step-by-step explanation:
i need help asap plsssssss helpppppp
help me im stoopid lol
Answer: 6
Step-by-step explanation:
Plug in x for 1
Y=-4(1)+10
Y=-4+10
Y=6
4. Solve the equation x2 = 10
Answer:
x=5
Step-by-step explanation:
u should know this not that hard to do
May you please help me!? (Also may you please show your work so I understand?)
Answer:
(2,3) (-2,1) (-4,-1) (4,-1) (4,-2) (0,-3)
Step-by-step explanation:
its x then y so you would find the number on the line the dot is on going from left to right for x, then for y go from up to down. also the answers are going from the top of the page, down. hope i helped!
3x-(2-4x) x is a variable
3x-(2+4x)
PLEASE ANSWER ASAP TEACHER CALLED ON ME
Answer:
Your answer is: - x - 2
Simplify the expression.
Step-by-step explanation:
Hope this helped : )
Can someone help me omg :( this is stressful
Answer:
7
Step-by-step explanation:
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition SubtractionStep 1: Write expression
7(16 ÷ 4²)
Step 2: Evaluate
Parenthesis - Exponents: 7(16 ÷ 16)Parenthesis - Division: 7(1)Multiplication: 7