Answer:
Roberta earns $164.4 on an 8 hr shift.
Step-by-step explanation:
In one hour Roberta makes $9
So if she works for 8 hours she will be making
=> ( 9 X 8)$
=>72$
Also she earns a commission of 10.5% on selling a jewellery worth $880
So 10.5% of 880 is
=> [tex]\frac{10.5}{100}\times 880[/tex]
=> [tex] 0.105\times 880[/tex]
=> 92.4
Hence Roberta will be earning a total amount of
(72+ 92.4)
=>$164.4
The rectangular rug in Marcia's living room measures 12 feet by 109 inches. What is the rug's area in square feet?
Answer:
109 square feet.
Step-by-step explanation:
109 in: = 109/12 = 9.0833333.... = 9 5/60 = (540+5)/60 = 545/60
Area = L*w
L = 545/60 feet
W = 12 feet
Area = 545/60 * 12
Area = 545*12/60
Area = 545 /5 = 109 square feet.
Answer:
109
Step-by-step explanation:
22. What is the percent of increase for a population
that changed from 438,000 to 561,000?
Answer: 28.08%
Step-by-step explanation: To find the percent increase, we divide the amount of change by the original number.
The amount of change is the difference between the two numbers which in this case is 561,000 - 438,000 and the original number is 438,000.
561,000 - 438,000 is 123,000 so we are left with 123,000 divided by 438,000 which is 0.2808. Finally, since our problem is asking us for a percent, we write 0.2808 as a percent by moving the decimal point two places to the right to get 28.08%.
So when the population changes from 438,000 to 561,000, it has increased by 28.08%.
The area of one rectangle is 36 square
feet. The area of a second rectangle is
21 square feet. The rectangles have the
same width and the dimensions are
whole numbers. What is the width of
both rectangles?
Answer:
The width of both rectangles are [tex]\frac{36}{l},\frac{21}{L}[/tex].
Step-by-step explanation:
Given : The area of one rectangle is 36 square feet. The area of a second rectangle is 21 square feet. The rectangles have the same width and the dimensions are whole numbers.
To find : What is the width of both rectangles?
Solution :
According to question, the two rectangles have the same widths but they have different lengths.
Let the width of both rectangle be 'w'
Let the length of one rectangle be 'l'
Let the length of second rectangle be 'L'
The area of the rectangle is [tex]\text{Area}=\text{Length}\times \text{Width}[/tex]
The area of one rectangle,
[tex]36=l\times w[/tex]
[tex]w=\frac{36}{l}[/tex]
The area of second rectangle,
[tex]21=L\times w[/tex]
[tex]w=\frac{21}{L}[/tex]
The width of both rectangles are [tex]\frac{36}{l},\frac{21}{L}[/tex].
Which expression is equivalent to 8a3 + c3?
I'm assuming we factor...
The answer is (2a + c)(4a^2 - 2ac + c^2.)
⭐ Please consider brainliest! ⭐
✉️ If any further questions, inbox me! ✉️
(The question that got me to Ace rank!)
Answer:
(2a + c)(4a² - 2ac + c²)
Step-by-step explanation:
8a³ + c³ ← is a sum of cubes and factors in general as
a³ + b³ = (a + b)(a² - ab + b²)
Given
8a³ + c³
= (2a)³ + c³
= (2a + c)((2a)² - 2ac + c²), that is
= (2a + c)(4a² - 2ac + c²)
Which of the equations listed below are linear equations
C=2 pie r
A= pie r squared
V=4/3 pie rcubed
Answer:
[tex]\large\boxed{C=2\pi r}[/tex]
Step-by-step explanation:
A linear equation is an equation in which a variable is in the first power.
The formula of a Circumference of a circle
[tex]C=2\pi r\\\\2,\ \pi-\text{numbers}\\r-\text{variable}\\\\\boxed{\bold{YES}}[/tex]
The formula of an Area of a circle
[tex]A=\pi r^2\\\\\pi-\text{number}\\r^2-\text{variable in the second power}\\\\\boxed{\bold{NO}}[/tex]
The formula of a volume of a sphere
[tex]V=\dfrac{4}{3}\pi r^3\\\\\dfrac{4}{3},\ \pi-\text{numbers}\\r^3-\text{variable in the third power}\\\\\boxed{\bold{NO}}[/tex]
Using V = lwh, what is an expression for the volume of the following rectangular prism?
The dimensions of a prism are shown. The height is StartFraction 5 Over 2 x + 8 EndFraction. The depth is StartFraction x + 4 Over 4 EndFraction. The length is StartFraction 12 Over x EndFraction.
StartFraction 15 Over 2 x EndFraction
StartFraction 3 x + 12 Over 2 x + 8 EndFraction
StartFraction 15 Over 2 x + 2 EndFraction
Fifteen-eighths
Answer:
Volume of the rectangular prism is given by,
[tex]\frac {15}{2x}[/tex] unit .
Step-by-step explanation:
According to the question,
height of the prism = [tex]\frac {5}{2x + 8}[/tex] unit = h (say)
depth of the prism = [tex]\frac {x + 4}{4}[/tex] unit = w (say)
length of the prism = [tex]\frac {12}{x}[/tex] unit = l (say)
So,
the volume of the rectangular prism,
V = lwh
= [tex]\frac {5}{2x + 8} \times \frac {x + 4}{4} \times \frac {12}{x}[/tex] unit
= [tex]\frac {15}{2x}[/tex] unit
Answer:
A
Step-by-step explanation:
How do you find the slope of a line? Answer it in your OWN OPINION.
You divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points.
Best of Luck to you.
What are the zeros of the polynomial function?
f(x) = x^3 + 2x^2 - x - 2
select each correct answer:
-3
-2
-1
0
1
2
3
Answer:
-2, -1 and 1.
Step-by-step explanation:
x^3 + 2x^2 - x - 2 = 0
x^2(x + 2) - 1(x + 2) = 0 Note the common factors (x + 2) so we have
(x^2 - 1)(x + 2) = 0
(x - 1)(x + 1)(x + 2) = 0 (x^2 -1 is the difference of 2 squares).
x = -2, -1 and 1.
Janis is at the store shopping for snacks for her trip to the zoo. She purchases 9 / 11 pound of grapes, 1 3/4 pounds of bananas and 2 5/6 pounds of apples.
(A) what is the weight of each type of fruit in decimal form?
(B) Does the weight of each type of fruit in decimal form represent a rational number? Explain.
Answer:
A. What is the weight of each type of fruit in decimal form?
Grapes in decimal form = 0.8181 pounds
Bananas in decimal form = 1.75 pounds
Apples in decimal form = 2.8333 pounds
B. Does the weight of each type of fruit in decimal form represent a rational number? Explain.
Of course, each of the weights of the fruits in decimal form represent a rational number. The weights can be expressed as a fraction where both the numerator and the denominator in the fraction are integers, like we checked with 9/11, 1 3/4 and 2 5/6. The denominator in a rational number cannot be zero.
Step-by-step explanation:
1. Let's check the information provided to us to answer the questions correctly:
Janis purchased:
9/11 pounds of grapes
1 3/4 pounds of bananas
2 5/6 pounds of apples
2. What is the weight of each type of fruit in decimal form?
Grapes in decimal form = 0.8181 pounds
Bananas in decimal form = 1.75 pounds
Apples in decimal form = 2.8333 pounds
3. Does the weight of each type of fruit in decimal form represent a rational number? Explain.
Of course, each of the weights of the fruits in decimal form represent a rational number. The weights can be expressed as a fraction where both the numerator and the denominator in the fraction are integers, like we checked with 9/11, 1 3/4 and 2 5/6. The denominator in a rational number cannot be zero.
A spherical shell has inner radius r and an outer radius r+h. Let h=0.1r. Find the volume of the shell in terms of r and then approximate the volume of the shell by 4πr^2h. Does this seem like a reasonable approximation if h is small compared to r?
Step-by-step explanation:
The volume of the shell is the volume of the outer sphere minus the volume of the inner sphere.
V = 4/3 π (r+h)³ − 4/3 π r³
V = 4/3 π (r³ + 3r²h + 3rh² + h³) − 4/3 π r³
V = 4/3 π r³ + 4π r²h + 4π rh² + 4/3 π h³ − 4/3 π r³
V = 4π r²h + 4π rh² + 4/3 π h³
If h = 0.1 r:
V = 4π r² (0.1 r) + 4π r (0.1 r)² + 4/3 π (0.1 r)³
V = 0.4π r³ + 0.04π r³ + 0.00133π r³
V = 0.44133π r³
Using the approximation:
V = 4π r² h
V = 4π r² (0.1 r)
V = 0.4π r³
The approximation is reasonable if h is small compared to r.
Solve for x: logx3=1/2
Answer:
x= 9
Step-by-step explanation:
Please see attached picture for full solution.
Find (3 × 104) + (7 × 102).
Write equation 7x -5y = -18 in y=mx +b
Slope intercept and y intercept
Answer:
Step-by-step explanation:
7x -5y = -18
Making y as subject
-5y = -7x - 18
Dividing through by -5
y = -7/-5x - 18/-5
y = 7/5x + 18/5
Slope m = 7/5
Intercept b = 18/5
graph the function y=1/7x+2
Answer:
x - 0, 1
y - 2, 15/7
A publisher needs to send many books to a local book retailer and will send the books in a combination of small and large boxes. Each small box can hold 20 books and each large box can hold 40 books. A total of 8 boxes were sent which can hold 260 books altogether. Determine the number of small boxes sent and the number of large boxes sent.
Answer:
5 large boxes
3 small boxes
Step-by-step explanation:
Create two equations to represent the problem.
let "a" be the number of small boxes
let "b" be the number of large boxes
20a + 40b = 260 This equation shows the numbers of books
a + b = 8 This equations shows the number of boxes
Solve the system of equations (solve for a and b). We can solve using the substitution method.
Rearrange a + b = 8 to isolate one of the variables.
a = 8 - b New equation that represents "a"
Since we know an equation for "a", we can substitute what "a" equals into the other equation. There will only be one variable in the equation, so we can solve by isolating. Isolate by doing reverse operations.
Substitute "a" for 8 - b
20a + 40b = 260
20(8 - b) + 40b = 260 Distribute 20 over the brackets by multiplying
160 - 20b + 40b = 260 Collect like terms (numbers with same variables)
160 + 20b = 260 Start isolating "b". Subtract 160 from both sides
20b = 260 - 160
20b = 100 Divide both sides by 20
b = 5 Number of large boxes
Substitute "b" for 5 in the simplest equation
a + b = 8
a + 5 = 8 Subtract 5 from both sides to isolate "a"
a = 8 - 5
a = 3 Number of small boxes
Therefore there were 5 large boxes and 3 small boxes sent.
Answer:
s = the number of small boxes
L = the number of large boxes
System of Equations:
25s+40L=250
s+l=7
Step-by-step explanation:
what is the inverse of g (x)=2x-3
Answer:
g^-1 (x)=1/2x+3/2
Step-by-step explanation:
y=2x-3
x=2y-3
2y=x+3
y=1/2x+3/2
Complete the equation of the line through ( 2 , − 2 ) and ( 4 , 1 )
Answer:
Step-by-step explanation:
first we find the slope using the slope formula : (y2 - y1) / (x2 - x1)
(2,-2)....x = 2 and y = -2
(4,1)...x = 4 and y = 1
now sub
slope = (1 - (-2) / (4 - 2) = (1 + 2) / 2 = 3/2
y = mx + b
slope(m) = 3/2
(4,1)...x = 4 and y = 1
now sub and find b, the y int
1 = 3/2(4) + b
1 = 6 + b
1 - 6 = b
-5 = b
so ur equation is : y = 3/2x - 5 <===
HEEEEELLLPPPP!!! I really need this to be answered im soo confused!!
Answer:
C
Step-by-step explanation:
∠ AFD = ∠ AFC + ∠ CFD
Given ∠ CFA = 90° and
∠ CFD = 90° - ∠ EFD, that is
∠ CFD = 90° - 62° = 28°, thus
∠ AFD = 90° + 28° = 118° → C
Answer:
answer is c. 118
angle AFC+ angleCFD = angle AFD..
[ANGLE AFD =AFC + CFD][ANGLE CFD = 90 -62 ]
Given f(x)=4x-6 and g(x)=8x+4 findthe value of x for which f(x)=g(x)
The value of "x" is [tex]\frac{-5}{2}[/tex]
Solution:
Given f(x) = 4x - 6
g(x) = 8x + 4
To find: value of x when f(x) = g(x)
We can equate f(x) and g(x) as per given statement and solve for x
f(x) = g(x)
Substituting the values of f(x) and g(x) in above expression,
4x - 6 = 8x + 4
4x - 8x = 4 + 6
-4x = 10
On solving,
[tex]x = \frac{10}{-4}\\\\x = \frac{-5}{2}[/tex]
Thus value of "x" is [tex]\frac{-5}{2}[/tex]
The larger of two numbers is 20 more then the smaller. Four times the larger is 70 more then 5 times the smaller.find the numbers.
The larger number is 30 and smaller number is 10.
Step-by-step explanation:
Let,
Larger number = x
Smaller number = y
According to given statement;
The larger number is 20 more than the smaller.
x = y+20 Eqn 1
Four times the larger is 70 more then 5 times the smaller.
4x = 5y+70 Eqn 2
Putting value of x from Eqn 1 in Eqn 2
[tex]4(y+20)=5y+70\\4y+80=5y+70\\80-70=5y-4y\\10=y\\y=10[/tex]
Putting y=10 in Eqn 1
[tex]x=10+20\\x=30[/tex]
The larger number is 30 and smaller number is 10.
Keywords: linear equation, substitution method
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A line goes through the point (-3,2) and has a slope of 1. Write the equation of this line in standard form .
Answer:
y - 2 = x + 3
y = x + 5
-x + y = 5 standard form
At the start of the month, Jodie had sold 885 copies of her new book. At the end of the month, she had sold 1,364 copies of her book. If each book profits $13.97, approximately how much did the book profit in the entire month? A. $6,706 B. $31,486 C. $19,096 D. $12,390
Option B
Profit earned in the entire month is $ 31486
Solution:
Given that At the start of the month, Jodie had sold 885 copies of her new book
At the end of the month, she had sold 1,364 copies of her book
Each book profits $13.97, approximately
To find: profit earned in entire month
Total books earned = 885 + 1364 = 2249
Profit earned from 1 book = $ 13.97 ≈ 14
Therefore profit earned from 2249 books is found by multiplying profit earned from 1 book by 2249
profit earned from 2249 books = Profit earned from 1 book x 2249
profit earned from 2249 books = 14 x 2249 = 31486
Therefore profit earned in the entire month is $ 31486
Liz runs 8 feet per second. Katie runs 350 feet in 31 seconds. Katie runs 350 feet in 31 seconds. Stephanie runs 1 mile in 388 seconds. Stephanie runs 1 mile in 388 seconds. Noah runs 541 feet in 1 minute. Noah runs 541 feet in 1 minute.
Answer: Stephanie is the fastest
Step-by-step explanation:
Here we have to find who runs faster:
Liz:
[tex]8 ft/s[/tex]
Katie:
[tex]\frac{350 ft}{31 s}=11.29 ft/s[/tex]
Stephanie:
[tex]\frac{1 mile}{388 s}. \frac{5280 ft}{1 mile}=\frac{5280 ft}{388 s}=13.60 ft/s[/tex]
Noah:
[tex]\frac{541 ft}{1 min}. \frac{1 min}{60 s}=9.01 ft/s[/tex]
As we can see after comparing, Stephanie is the fastest, since she travels more distance in less time.
The sum of the digits of a two-digit number is 5. When the digits are reversed, the number increases by 27. Find the original number. The original number is
Answer:
14Step-by-step explanation:
[tex]a-\text{tens digit}\\b-\text{unity digit}\\10a+b-\text{number}\\10b+a-\text{number with reversed digits}\\a+b-\text{sum of digits}\\\\\bold{System\ of\ equations:}\\\\\left\{\begin{array}{ccc}a+b=5\\10b+a=10a+b+27&\text{subtract}\ 10a\ \text{and}\ b\ \text{from both sides}\end{array}\right\\\\\left\{\begin{array}{ccc}a+b=5\\9b-9a=27&\text{divide both sides by 9}\end{array}\right[/tex]
[tex]\underline{+\left\{\begin{array}{ccc}a+b=5\\b-a=3\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad2b=8\qquad\text{divide both sides by 2}\\.\qquad \boxed{b=4}\\\\\text{Put the value of\ b}\ \text{to the first equation}\\\\a+4=5\qquad\text{subtract 4 from both sides}\\\boxed{a=1}[/tex]
(a - b)(a 2 + ab + b 2)
Please list the steps on how to solve this one.
The ratio of Geoff’s to Ethan’s age is 1:10.If the total of their ages is 88, how old is Ethan
Answer:
80 years old
Step-by-step explanation:
the ratio is 1:10 and their total is 88. Just by looking at it you can see that Geoff's age is 8 and Eathan is 80. The total is 88 and the ratio also matches.
1:10 1 times 10 is 10
8:80 8 times 10 is 80
Answer:
hi there!
The correct answer to this question is: 80 years old
Step-by-step explanation:
you first need to set up to equations:
in this case: I will use the variable "e" for Ethan and "g" for Geoff
e=10g
g + e = 88
since e = 10g, substitute that into the second equation and you get 10g + g = 88
you add the variables and you get 11g=88 then you divide 11 on both sides and you get 8 so geoff is 8
then you plug 8 back into the second equation and you get ethan's age which is 80
A young sumo wrestler decided to go on a special diet to gain weight rapidly
W represents the wrestlers weight (in kilograms) after t months
W=80+5.4t
What was the wrestlers weight before his special diet
The weight of wrestler was 80 kg before the special diet
Step-by-step explanation:
Given function is:
[tex]W=80+5.4t[/tex]
We can substitute the values of t to find the weight after t number of months
When we have to find the initial weight , t has to be put equal to zero
So,
[tex]W = 80+5.4t\\t = 0\\W = 80 + 5.4(0)\\W = 80+0\\W = 80[/tex]
Hence,
The weight of wrestler was 80 kg before the special diet
Keywords: Functions, variables
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Answer:
80
Step-by-step explanation:
i'm not sure but the answer for people on khan
Is x=4 and y=5 perpendicular
True!
Explanation:The Cartesian coordinate system is formed by two perpendicular axes, which are the x-axis and y-axis. In this problem, we are given two lines:
[tex]x=4 \ and \ y=5[/tex]
The line [tex]x=4[/tex] is parallel to the y-axis and has an undefined slope.The line [tex]y=5[/tex] is parallel to the x-axis and has a slope of zero.Since the x and y-axes are perpendicular, then the lines [tex]x=4 \ and \ y=5[/tex] are also perpendicular.
Learn more:Cartesian coordinate system: https://brainly.com/question/2141683
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a).$ -16.72
b).$75.50
c).$98.28
d).$16.72
e).$ -18.78
Option D
Money earned by Marty is $ 16.72
Solution:
Given that, Marty started a lawn mowing business
He kept track of his expenses and earnings in a table
Lawn Mower = - $49.99
Gasoline = - $8.79
Moyer's yard = $ 40
Griffen's yard = $ 35.50
To find: Money earned by Marty
Total money earned = lawn mower + gasoline + moyers yard + griffens yard
Total money earned = -49.99 - 8.79 + 40 + 35.50
Total money earned = -58.78 + 40 + 35.50
Total money earned = -18.78 + 35.50 = 16.72
Thus money earned by Marty is $ 16.72
Every winter, the math club sells cookie dough to raise money. Last year, they sold 2,080 pounds of cookie dough to 520 people. This year, they predict that they will sell cookie dough to between 630 and 670 people. About how many pounds of cookie dough will they need?
Final answer:
After calculating that each person bought an average of 4 pounds of cookie dough last year, and using the average predicted sales of 650 people for this year, the math club should prepare approximately 2600 pounds of cookie dough.
Explanation:
The question is asking for an estimation of how many pounds of cookie dough the math club will need to sell this year, given that they predict selling to more people than last year. To calculate this, we need to find the average amount of cookie dough sold per person last year and then multiply that by the predicted number of people for this year.
Last year, the math club sold 2,080 pounds of cookie dough to 520 people. Thus, each person bought an average of
2080 pounds ÷ 520 people = 4 pounds per person.
This year, they are predicting sales to between 630 and 670 people. We will use the average of these two numbers for a better estimation, which is (630 + 670) ÷ 2 = 650 people.
Now, we multiply the average amount of dough per person by the estimated number of people:
4 pounds per person × 650 people = 2600 pounds.
Therefore, the math club should prepare approximately 2600 pounds of cookie dough for this year's fundraiser.