find the inverse of A(r)=15+3r
Answers
Answer:
A(r)=15-3r
Step-by-step explanation:
switch the sign of 3r to make it -3r
Related Questions
Tehira has read 110 pages of a 290-page book. She reads 20 pages each day. How many days will it take to finish?
A. 20 + 110p = 290
B. 20p + 290 = 110
C. 110 + 20p = 290
D. 290 = 110 - 20p
Answers
Pages left:-
\(\\ \sf\longmapsto 290-110=180\)
She read everyday=20Total days
\(\\ \sf\longmapsto \dfrac{180}{20}=9\)
If days be p the equation will be
\(\\ \sf\longmapsto 20p+110=290\)
Write the ratio as a fraction in simplest form and explain it's meaning.
The ratio in simplest form is Blank 1. For every Blank 2 cats there are Blank 3 dogs.
Answers
Answer:
1. 3 to 4
2. 3
3. 4
Step-by-step explanation:
1 1/3 + 3 3/5
give ur answer in a mixed number
Answers
Answer: 9/1 . or 9
Step-by-step explanation:
Conversion a mixed number 3 3/4 to a improper fraction: 3 3/4 = 3 3/4= 3 · 4 +3/4= 12 + 3/4 = 15/4
part 2
Conversion a mixed number 2 2/5to a improper fraction: 2 2/5 = 2 2/5= 2 · 5 +2/5= 10 + 2/5 = 12/5
part3
Multiple: 15/4 * 12/5 = 15 · 12/4 · 5 = 180/20= 9 · 20/1 · 20= 9
next intermediate step, , cancel by a common factor of 20 gives 9/1
please help me i will give brainliest to first person to anwser.
Answers
First we start with the formula for cylinders v=(pi)r(squared)h filled in Thats v=(3.14)(8 squared) (8) which brings us to the answer 1607.68 but you must round to the nearest tenth aka 1607.7
Answer:
The first option, V ≈ 1607.7 in²
Step-by-step explanation:
Find the volume of the given cylinder.
\(\begin{center}\framebox{\parbox{4cm}{\textbf{Volume of a Cylinder:}\\[2ex]The volume of a cylinder with radius $r$ and height $h$ is given by the formula:\\[2ex]\center{$V = \pi r^2 h$} \\ \\}}\end{center}\)
Given:
r = 8 in
h = 8 in
π = 3.14
Find:
V = ?? in³
\(\hrulefill\)
Now solving,
Substitute the given values into the formula:
=> V = (3.14)(8)²(8)
Using a calculator to simplify:
=> V = 1607.68 in²
Rounded to the nearest tenth:
∴ V ≈ 1607.7 in²
Thus, the first option is correct.
can you help me with this?
Answers
Answer:
I'm not sure but D or A sound good
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
It is likely but not certain because it isn't 100%
The Painter siblings, Elsa, Ben and Cal paint houses. They have been in the business so long that each knows exactly how many square feet each other paints in one hour and these rates never change. For their latest job, they calculated that if Elsa and Ben did the job together, it would take exactly 11 hours. On the other hand, if Elsa and Cal did the job together, it would take exactly 9 hours. Finally, Ben and Cal could do it in exactly 9.9 hours (or if you prefer, 9 hours and 54 minutes). They decided all three would paint this particular house. Ben and Cal started the job at 8 AM and Elsa joined them at 9:00. Cal left at 1:30 and so Ben and Elsafinished the job. After deducting the supply costs (paint etc.), the brothers split the net profit based on what percentage of the total square footage each painted. Who earned the most and who earned the least for this job?
Answers
Answer:
Elsa earned the most
Ben earned the least
Step-by-step explanation:
E = Elsa's speed
B = Ben's speed
C = Cal's speed
The combined speeds are:
E + B = 1/11
E + C = 1/9
B + C = 1/9.9
If we add up all three equations:
2B + 2C + 2E = 10/33
B + C + E = 5/33
If we subtract each of the first three equations from the total equation, we can find the individual speeds.
C = 5/33 − 1/11 = 2/33
B = 5/33 − 1/9 = 4/99
E = 5/33 − 1/9.9 = 5/99
Ben and Cal paint together for 1 hour. The fraction of the wall they paint is:
(1/9.9) × 1 = 10/99
Elsa, Ben, and Cal all paint together for the next 4.5 hours. The fraction of the wall they paint is:
(5/33) × 4.5 = 15/22
Ben and Elsa then finish the job. The amount of wall left is 1 − 10/99 − 15/22 = 43/198. So the time it takes is:
(43/198) / (1/11) = 43/18 hours
The fraction of the wall that Ben paints is:
(4/99) (1 + 4.5 + 43/18) = 284/891
The fraction of the wall that Cal paints is:
(2/33) (1 + 4.5) = 1/3 = 297/891
The fraction of the wall that Elsa paints is:
(5/99) (4.5 + 43/18) = 310/891
Answer:
Ben earned the most as 6 of 16.5 as a percentage = (6*100):16.5 =36.36%
We check with Elsa and she earned the least as (5*100):16.5 =30.31%
Cal earned the average as 5.5 of 16.5 as a percentage = (5.5*100):16.5 =33.33%
Step-by-step explanation:
E + B = 11hrs
E + C = 9hrs
B+C = 9.9 hrs
Lets say the house was 100ft sq
if E took 5.5 hrs
B took 5.5hrs we would have 11
C took 3.5 hrs we would have 9hrs for E+C
B took 5.5 hrs + 3.5hrs we are 0.9hrs short and see that B would need to take 0.9 more which means E works 0.9hrs less and shares 0.4 less with C having 0.5 less which gives B an extra 0.4 instead of 0.9
This equates to B: 5.9 , C: 3.9 , E: 5.1
We can change to B: 6 , C: 3.94 , E: 5.4
= E+B = 11.4 = 11
= E+C = 8.99 = 9
= B+C = 9.94 = 9.9
Percentages of fixed net pay when B: 6 , C: 3.94 , E: 5.4 = 6+ 3.94+ 5.4 = 100
Time when 15.34 hrs = 100% if working same rate changes to 16.5hrs to account for the hours given 8am-1.30pm 8am-1.30+ 9am-1.30+ = minimum 1hr more = 2pm
Cal worked 8 am till 1.30 pm = 5.5hrs = 1.66hr extra
Ben worked 8am till 2pm = 6 hrs = 0 hr extra together worked 11.5hrs
Elsa worked 9am till 2pm = 5 hrs = -0.4hr less
11.5+ 5 = 16.5 This equals 16.5hrs = 100%
Ben earned the most as 6 of 16.5 as a percentage = (6*100):16.5 =36.36%
Cal earned the average as 5.5 of 16.5 as a percentage = (5.5*100):16.5 =33.33%
We check with Elsa and she earned the least as (5*100):16.5 =30.31% is the same as 100-69.67%
PART 1: Identify the two equivalent forms for 3/5% below
Equivalent Fraction =
Equivalent Decimal =
PART 2: Select all the expressions that are equivalent to 20% of 150.
A. 1/4*120
B. 25
C. 1/25*120
D. 1/4 ÷ 120
E. 30
*I only made a duplicate of this because some people here don't know how to follow the directions.
Answers
Equivalent Decimal= .006
Part 2: A and E
If Machine A makes a yo-yo every five minutes and machine B takes 10 min to make a yo-yo, how many hours would it take them working together to make 20 yo-yos?
Answers
Answer: 130 minutes
Step-by-step explanation: 10 min = 1 yo-yo and 5 min = 1 yo-yo. A- 60 min = 6 yo-yos. B- 70 min = 14 yo-yos. 14+6 = 20 yo-yos, so 70+60 = 130 minutes.
PLS HELP!
This figure consists of a square and a quarter circle.
What is the perimeter of this figure?
Use 3.14 for π.
Enter your answer as a decimal in the box.
ft
Answers
Answer:
Step-by-step explanation:
For the square you do have the perimeter as;
Psquare*=20ft
the quarter of the circle
the radius of the circle is 5
Circumference= 2*3.14*r
C=10*3.14=31.40
we need just 1/4 of the circumference
31.40/4=7.85
P total=20+7.85=27.85 ft
please solve this correctly in simple words
Answers
Answer: The answer is -2/6 :)
Step-by-step explanation:
Answer: -5/24
Step-by-step explanation:
-7/12+3/8 can also be written as
3/8-7/12
The answer will be -5/24
I hope it is right
Banana Cupcakes
makes 10 cupcakes
1 cup granulated sugar
cup vegetable oil
1 large egg
4 tablespoons sour cream
2 medium-sized ripe bananas, mashed
1 cups all-purpose flour
1 teaspoon baking soda
teaspoon salt
1 teaspoon vanilla extract
pinch of nutmeg
You will use the recipe above to answer the following questions:
This recipe serves 10, but you need to serve 30. What number will you need to multiply the amount of each ingredient by to adjust the recipe? How did you determine this number?
How much vegetable oil do you need for 30 cupcakes?
How much flour do you need for 30 cupcakes?
What is the difference in the amount of vanilla extract you would need for 30 cupcakes?
What is the difference in the amount of salt you would need for 30 cupcakes?
In the real world, even though you make adjustments to a recipe to accommodate the number of people you need to serve, you sometimes round the amount of an ingredient instead of using an exact amount. Which ingredient would it make more sense to round rather than coming up with the exact amount? Why?
Answers
Answer: Hey give me 1 hour and ill answer it I'm doing odessyware rn so Ill get back to you later appreciate yo patients.
Step-by-step explanation:
Then, if we want to make 30 servings, we need to use that recipe 3 times. (because x*10 = 30, then x = 30/10 = 3)
This would be equivalent to multiply each ingredient by 3.
for 30 cupcakes we need:
3 cups of vegetable oil.
3 cups of all-purpose flour
(because for each one of these ingredients we needed only 1 cup to make 10 cupcakes).
for 10 cupcakes we need 1 teaspoon of vanilla.
for 30 cupcakes we need 3 teaspoons of vanilla, the difference is 3 - 1 = 2.
So the difference is 2 teaspoons.
About which quantities we should round are those where we may have mixed numbers or big numbers.
For example, we have 4 tablespoons of sour cream for 10 servings, then for 30 servings we should have:
3*4 = 12 tablespoons.
We could round this down to 10 tablespoons.
Hope this helped
I almost broke my brain doing this so can you give me brainliest answer please thank you
y = x + 0
y = -3 + 0
Graphed on a graph please!
Answers
Answer:
Check Pic. Use geogebra or desmos online graphing. I personally like desmom better and it is what I used for this question.
Step-by-step explanation:
Answer:
Step-by-step explanation:
On a manufacturer's assembly line, 3% of its merchandise comes off defective. If the company has 354 defective items, how many total items came off the assembly line?
a. 11,800
b. 106.2
c. 10.62
d. 1,180
Answers
Step-by-step explanation:
x = total number
3 % of x is 354 items 3% is .03 in decimal
.03x = 354
x = 354 / .03 = 11800 total items
Jaxon is creating a mosaic design on a rectangular
table. He has added two pieces to one of the corners.
The first piece has an angle measuring 38° and is
placed in the corner. A second piece has an angle
measuring 27° and is also placed in the corner. Draw a
diagram to model the situation. Then, write an
equation, and use it to determine the measure of the
unknown angle in a third piece that could be added to
the corner of the table.
Answers
(question is included in the image) answer in a simple way and on point to be marked brainilest
Answers
Answer:
a) Missing y-values
x = - 2 ==> y = 5
x = - 1 ==> y = 2
x = 1 ==> y = 2
x = 3 ==> y = 10
b) Values of x for y = 4:
x = 1.7 and x = -1.7
Step-by-step explanation:
Given the quadratic function,
y = x² + 1
part a)
to find the y-value for a specific x, just plug in that value of x into the right side and simplify
There are four missing values for
The x values and the corresponding y values are
x = - 2 ==> y = (-2)² + 1 = 4 + 1 = 5
x = - 1 ==> y = (-1)² + 1 = 1 + 1 = 2
x = 1 ==> y = (1)² + 1 = 1 + 1 = 2
x = 3 ==> y = (3)² + 1 = 9 + 1 = 10
part b)
The graph has each unit on the grid for the x-axis = 0.5
and
each unit on the grid for the y-axis = 2
I got this by seeing that between x = 0 and x = 1 there are two units
the value of y at x = -1 or x = 1 is only one vertical unit on the grid and since y = 2 for these values of x, each vertical unit must be 2
Therefore look at the value of y = 4 (which should be two vertical units) on the graph. You can also draw a horizontal line parallel to the x axis at 2 units from the x-axis
It appears that on the positive x-axis for y = 4, x is about halfway between 1.5 and 2 so I would estimate it at 1.75
On the negative x-axis, at y = 4, x is about halfway between -1.5 and -2 so it would be -1.75
One thing to note about quadratic functions is that you get the same value of y for x and -x
So at y = 4, the two possible values of x are
x = 1.75 and x = -1.75
which when using one decimal place will round to 1.7 and 1;75
I am rounding down rather than rounding up since the x value appears be less than 1.75
Mathematically we can solve for x at y = 4 by plugging in values
y = 4 = x² + 1
x² + 1 = 4
x² = 4 - 1 = 3
x =±√3 = ±1.732
which when rounded to 1 decimal place becomes
x = 1.7 and x = -1.7
Answer:
Step-by-step explanation:
a) y = (-2)² + 1 = 5
y = (-1)² + 1 = 2
y = (1)² + 1 = 2
y = (3)² + 1 = 10
b) 4 = x² + 1
x² = 4 - 1 = 3
x = ±√3 = ±1.7
Multiply the pairs of numbers and match them with their products. Tiles (-5)(4.2) (-7)(-3) (4) (5) (2.5)(-9) Pairs 22.5 21 -22.5 -21 111
Answers
Here are the pairs matched with their products:
- (-5)(4.2) matches with -21
- (-7)(-3) matches with 21
- (2.5)(-9) matches with -22.5
Pairs (4) and (5) do not have corresponding products in the given options.
(-5)(4.2) = -21
(-7)(-3) = 21
(4)(5) = 20
(2.5)(-9) = -22.5
So, the pairs of numbers and their products are as follows:
(-5)(4.2) = -21 matches with -21.
(-7)(-3) = 21 matches with 21.
(4)(5) = 20 matches with 20.
(2.5)(-9) = -22.5 matches with -22.5.
I hope this helps!
Cayley says that the equation p=1.5q and 2/3p=q both represent the same proportional relationship. Mariah says that can't be true because the constants of proportionality are different. With which student do you agree? Explain. I WILL GIVE BRAINLIEST!!!
Answers
Let's rewrite the second equation.
2/3p = q
Multiplying both sides by 3/2 gives us
3/2 · 2/3p = 3/2p
p = 3/2p
So the second equation is equivalent to the first equation. That means both equations represent the same proportional relationship. Cayley was correct.
sorry if this didn't help.
Answer:
Step-by-step explanation:
Multiplying both sides by gives us
So the second equation is equivalent to the first equation. That means both equations represent the same proportional relationship. Cayley was correct.
An albatross is a large bird that can fly 400 kilometers in 8 hours at a contant speed. Using d for distance in kilometers and t for number of hours, an equation that represents this situation is d = 50t.
What are two constants of proportionality for the relationship between distance and hours?
An albatross is a large bird that can fly 400 kilometers in 8 hours at a contant speed. Using d for distance in kilometers and t for number of hours, an equation that represents this situation is d = 50t.
What are two constants of proportionality for the relationship between distance and hours?
50
50/d
50/1
1/50
Answers
Answer:50
Step-by-step explanation:
50 is constant of proportionality
please answer quickly
Answers
Answer:
37.5
Step-by-step explanation:
cosФ = \(\frac{A}{H}\)
cos(33°35') = \(\frac{m}{45}\)
m = 45 × cos(33°35')
m = 37.5 (1d.p.)
please help thank you
Answers
Answer:
1. c) 4
2. b) 7
Step-by-step explanation:
Method 1:
Use a calculator to help solve the cube root of the problem.
Method 2:
Factor Tree it to see if there is a number that is three times the answer.
Please help and show work:
5) Joe has a 14 ft ladder that is propped against a building. If the base of the ladder and the base of the building are √75 ft apart, what is the highest the ladder will go on the building? Label with units
6) A bee is stuck in a rectangular box. What is the distance the bee will travel if it flies in a straight line from vertex B to vertex E?
Answers
Answer:
Close to 75 ft apart because its not that far from it
Step-by-step explanation:
What is the mode of the following set of numbers: 3, 4, 5, 5, 2, 3, 0, 1
Answers
Answer:
the answer is 5 cuz the mode is the most repeated number in a set
Answer:
The answer is 5, bc the mode is the most repeated number in a set .
Step-by-step explanation:
How does the graph of g(x) = 2^x+3 differ from the graph of f(x) = 2^x ? **WILL BE GIVING BRAINLIEST**
Answers
Answer: 3 units up
Step-by-step explanation:
The 2^x is the same, but the first equation is +3 (y-intercept), so it is translated 3 units up.
What is the area of the figure in square feet?
Enter the correct answer in the box.
[?]ft2
Answers
Answer:
42/100. Simplified would be 21/50]
Step-by-step explanation:
Three research departments have 8 ,10 , and 7 members, respectively. Each department is to select a delegate and an alternate to represent the department at a conference. In how many ways can this be done?
Answers
We can conclude that exists 211680 ways.
How many ways can this be done?We know that the three research department is have 8, 10, and 7 members.
We choose a delegate and an alternate to represent the department.
First case: department have 8 members.
So, for a delegate, we have 8 options, and for a alternate 7, so a total of
\(8 \times 7 = 56 \ \text{options}\)
Second case: department have 10 members.
So, for a delegate, we have 10 options, and for a alternate 9, so a total of
\(10\times 9 =90 \ \text{options}\)
Third case: department have 7 members.
So, for a delegate, we have 7 options, and for a alternate 6, so a total of
\(7\times6 = 42 \ \text{options}\)
Therefore, we get:
\(56 \times 90 \times 42 = \bold{211680}\)
Hence, we conclude that exists 211680 ways.
For a similar problem about this, please click the link below:
https://brainly.com/question/30958797
For the first department with 8 members, there are 8 choices for selecting a delegate. After choosing a delegate, there remain 7 members, so there are 7 choices for selecting an alternate. Therefore, there are 8 × 7 = 56 ways to select a delegate and an alternate from the first department.
Similarly, for the second department with 10 members, there are 10 choices for selecting a delegate and 9 choices for selecting an alternate. Hence, there are 10 × 9 = 90 ways to select a delegate and an alternate from the second department.
For the third department with 7 members, there are 7 choices for selecting a delegate and 6 choices for selecting an alternate. Thus, there are 7 × 6 = 42 ways to select a delegate and an alternate from the third department.
To find the total number of ways to select delegates and alternates from all three departments, we multiply the number of choices for each department together:
56 × 90 × 42 = 211,680.
Therefore, there are 211,680 ways to select a delegate and an alternate from each department.
According to the 2010 census data, the population of Texas was about 25,000,000 people. The land area of Texas is about 260,000 m^2. What was the average number of people per square mile in 2010?
Answers
Answer:249037470.178 peoples per mi^2
What is the slope of the line that contains the points negative 2, negative seven halves and (4, −4)?
Answers
Answer:
-1/12
Step-by-step explanation:
Formula to find the slope: Y2-Y1 / X2 - X1
Plug in:
(-4 + 7/2) / (4 + 2)
(-8/2 + 7/2) / (4 + 2)
( - 1/2) / (6)
= -1/12
Answer:
-1/12 negative one over 12
What is the angle made by the hour hand and the minute of the clock at 8:57
Answers
Answer:
85 degrees
Step-by-step explanation:
help plss<33.
how is a representative democracy different from a direct democracy?
in a direct democracy, citizens are able to vote.
in a direct democracy, citizens elect officials to make the laws.
in a representative democracy, citizens make the laws themselves.
in a representative democracy, citizens elect officials to make the laws.
Answers
Answer:
C
Step-by-step explanation:
The answer is C because in a representative democracy, citizens do make the laws themselves..
hope the helps. have a nice day!
solve for m
-5m = -35
m=?
Answers
Answer:
m = 7
Step-by-step explanation:
-5m = -35
___ ___ Divide -5 on both sides.
-5 -5
m = 7