Given Evelyn's hourly rates for both of her jobs and the total number of working hours she has, Evelyn can work a maximum of 7 hours tutoring if she has already spent 8 hours lifeguarding.
Explanation:To solve this problem, we first calculate the total earning from lifeguarding by multiplying the hourly rate by the number of hours she worked, which results in $18 * 8 = $144. The minimum total earning she must make is $200, so she still needs to earn $200 - $144 = $56. Since she is making $11 per tutoring hour, she will need to work a minimum of $56 / 11 which is approximately 5 hours. However, these are still part of the total of 15 hours maximum she can work, and she has already worked 8 hours lifeguarding, meaning she can work at most 15 - 8 = 7 hours tutoring in the remaining time.
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The maximum number of whole hours tutoring that Evelyn can work while still meeting her requirements is 5 hours.
To solve this problem, we can use a combination of inequalities to represent the given constraints.
We need to solve these inequalities simultaneously to find the maximum number of whole hours Evelyn can work as a tutor.
1. The first inequality:
[tex]\[ x + 8 \leq 15 \][/tex]
[tex]\[ x \leq 15 - 8 \][/tex]
[tex]\[ x \leq 7 \][/tex]
2. The second inequality:
[tex]\[ 18(8) + 11x \geq 200 \][/tex]
[tex]\[ x \geq \frac{56}{11} \][/tex]
[tex]\[ x \geq 5.09 \][/tex]
Since the number of tutoring hours must be a whole number, Evelyn can work a maximum of 5 whole hours tutoring and still meet her requirements.
Therefore, the maximum number of whole hours tutoring that Evelyn can work while still meeting her requirements is 5 hours.
translate in numerical form. "three times a number is greater than or equal to 12 and less than 21"
Answer:
21 > 3x ≥ 12
Step-by-step explanation:
Let's represent "a number" with the variable x.
Keep in mind: times means multiplication. *
21 > 3x ≥ 12
The part on the left shows us that the 3x is less than 21. The part on the right shows that it's greater than or equal to 12.
slope -2, passes through (-4, 6)
Answer:
y = -2x-2
Step-by-step explanation:
y=mx+b
m is the slope, which you already wrote (-2)
b is the initial condition, the value of y when x equals 0.
For (-4,6), we need a value 0 for x, so we add 4, but for each x value added, we add -2 to the y value, so 4 times, 6 - 8 = -2
Hope that helps
A rectangle has a perimeter of (20x+12y). If one side of the rectangle is (3x-4y), write the expression for the other side
Answer:
(7x + 10y)
Step-by-step explanation:
To find this add (3x - 4y) to itself to calculate to lengths of the shorter sides.
(3x - 4y) + (3x - 4y) = 6x - 8y
Subtract this from (20x + 12y)
(20x + 12y) - (6x - 8y) = 14x + 20y Divide this by two to get the length of one side
14x + 20y / 2 = 7x + 10y
If this answer is correct, please make me Brainliest!
The expression for the other side of the rectangle, when one side is (3x-4y) and the perimeter is (20x+12y), is (7x + 10y).
To determine the expression for the other side of the rectangle with a perimeter of (20x+12y) and one side being (3x-4y), we must remember that the perimeter of a rectangle is calculated by adding together twice the length and twice the width (P = 2l + 2w). Since we have one length, we can solve for the width by dividing the perimeter by 2 and subtracting the length.
First, let's find half of the perimeter by dividing the given perimeter by 2:
(20x + 12y) / 2 = 10x + 6y
This represents the sum of one length and one width. We then subtract the given side (one length) from this to find the other side (one width):
(10x + 6y) - (3x - 4y) = 10x + 6y - 3x + 4y = 7x + 10y.
6x^2=726
[tex]6x^2 = 726[/tex]
Answer:
[tex]x=11[/tex]
Step-by-step explanation:
Step 1: Divide both sides by 6
[tex]6x^2 / 6 = 726 / 6[/tex]
[tex]x^2 = 121[/tex]
Step 2: Square root both sides
[tex]\sqrt{x^2} = \sqrt{121}[/tex]
[tex]x = 11[/tex]
Answer: [tex]x=11[/tex]
Answer:
[tex]6 {x}^{2} = 726 \\ \frac{6 {x}^{2} }{6} = \frac{726}{6} \\ {x}^{2} = 121 \\ x = \sqrt{121} \\ x = 11[/tex]
help me plzzzzzzzzzz im begging youuuuu
Answer:
If the poster is enlarged by the scale factor 5/2 then,
length=12×5/2=30ft
And,
breadth=3×5/2=7ft
>>>>correct ans is 7.5 by 30
Answer:
7.5 feet by 30 feet
Step-by-step explanation:
i believe you would take 12 and divide it by 2 and then multiply it by 5=30. And then do the same for 3. 3 divided by 2 =1.5 and 1.5 multiplied by 5 =7.5
The answer would be 7.5 feet by 30 feet
Matti built a greenhouse in his backyard as shown below.
How much cubic space is in Matti's greenhouse?
A. 191.1 ft 3
B. 367.5 ft
C. 382.2 ft3
D. 735.0 ft
Answer:
B) 367.5 ft
Step-by-step explanation:
BECAUSE ITS NOT A
Answer:
the answer is b
Step-by-step explanation:
Triangle D E F is shown. Angle D E F is 90 degrees and angle F D E is 42 degrees. The length of D E is 7.2 and the length of E F is d. What is the value of d to the nearest hundredth? d ≈
The value of the d is 6.48, if the angle D E F is 90 degrees and angle F D E is 42 degrees and the length of D E is 7.2 and the length of E F is d.
Step-by-step explanation:
The given is,
Angle D E F is 90 degrees
Angle F D E is 42 degrees
The length of D E is 7.2
The length of E F is d
Step:1
For the given values,
Triangle DEF is right angle triangle,
Ref the attachment,
Angle FDE, ∅ = 42°
DE = 7.2
EF = d
Trigonometric ratio for the given right angle triangle,
[tex]tan[/tex] ∅ = [tex]\frac{Opp}{Adj}[/tex]
[tex]tan[/tex] ∅ = [tex]\frac{EF}{DE}[/tex]
[tex]tan 42 = \frac{d}{7.2}[/tex]
( the value of tan 42° = 0.900404 )
[tex](0.900404)(7.2)= d[/tex]
[tex]d=6.48[/tex]
EF = d = 6.48
Result:
The value of the d is 6.48, if the angle D E F is 90 degrees and angle F D E is 42 degrees and the length of D E is 7.2 and the length of E F is d.
Answer:
6.48
Step-by-step explanation:
just did the test
What does it mean when we write √100 = 10 in terms of squares and side lengths? Explain. *
Step-by-step explanation:
[tex]\sqrt{100}=10[/tex] because [tex]10^{2}=100[/tex]. 10 is the square root of 100, which means that 10 multiplied by itself (10×10=[tex]10^2[/tex]) is equal to 100. So, when you are trying to find the square root of a number, the square root is itself multiplied by itself.
Evaluate the expression for m = –1.
–21m2 − 11m − 30 =
Hope this will help u....
Answer:
-40
Step-by-step explanation:
-21m^2 - 11m - 30
m = -1
Therefore
-21(-1)^2 - 11(-1) - 30
-21(-1 x -1) -11 x -1 -30
-21 x 1 +11 -30
-21 + 11 - 30
-10 - 30
-40
Write an equation for the line shown
How would you classify number 125?
A perfect square
B perfect cube
C both a perfect cube and a perfect square
D neither a perfect square nor a perfect cube
Answer:B (perfect cube)
Step-by-step explanation: 125 is the cube of 5
Which of the following is the correct solution to the linear inequality showin
V<1/2x-4
Answer:
Image attached.
Step-by-step explanation:
The given inequality is [tex]y<\frac{1}{2}x-4[/tex].
Let us make a table for [tex]y=\frac{1}{2}x-4[/tex]
x 0 2
y -4 -3
Then we draw the dotted line and shade below it because of the "<" sign.
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Find the volume of a cylinder with a diameter of 10 inches and a height that is three times
the radius. Use 3.14 for pi and round your answer to the nearest tenth. (Hint: You may only
enter numerals, decimal points, and negative signs in the answer blank) (4 points)
Answer:
1177.5 in^3
Step-by-step explanation:
Volume of a cylinder=π*r^2*h
3.14*radius^2*height=
3.14*5*5*15=1177.5
Complete the following table with the properties used to solve 4(x + 3) =20
Statements Proof:
4(x + 3) = 20:
4x + 12 = 20:
4x = 8:
x =2:
Answer:
distributive property, subtraction, division
Step-by-step explanation:
i don't know the exact name of the last two but that's what i'm assuming they're called lol
The properties used to solve the equation 4(x + 3) = 20 are the distributive property, subtraction property of equality, and division property of equality. First, the distributive property is used to expand the left-hand side, then subtraction is used to isolate 4x. Finally, division is used to find x = 2.
Explanation:The question provides an algebraic equation and uses properties to solve for the variable 'x'. The steps taken demonstrate the following properties:
Distributive property: The equation starts as 4(x + 3) = 20. Through the distributive property (a*(b + c) = a*b + a*c), this is expanded to 4x + 12 = 20.Subtraction property of equality: Next, 12 is subtracted on both the sides giving 4x = 8. This property states that we can subtract the same value from both sides of the equation and it will still hold true.Division property of equality: Finally, the equation is divided by 4 on both sides, which results in x = 2. This property tells us that if we divide both sides of the equation by the same non-zero number, the equation will still be equal.Learn more about Algebraic Properties here:https://brainly.com/question/32858114
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If the volume of the pyramid shown is 360 inches cubed, what is its height?
A rectangular pyramid with base of 12 inches by 10 inches and a height of h.
1 in.
3 in.
6 in.
9 in.
Answer:
9 inches
Step-by-step explanation:
The formula for the volume of a rectangular pyramid is
Here we have volume (V), base (L), and width (W)
V = 360 in³, L = 12 in, W = 10 in
We need to manipulate the volume equation to solve for the height (H)
First we need to multiply both sides by 3 to get rid of the fraction: 3V = L×W×H
Then we need to divide both sides by (L×W) to get:
Now we can plug in the given values:
The height is 9 inches
Answer:
9
Step-by-step explanation:
edge
Simplify 9 to the 2nd over 9 to the 7th. (4 points)
Group of answer choices
95
1 over 9 to the 9th
1 over 9 to the negative 5th
1 over 9 to the 5th
Answer:
[tex]\frac{1}{9^{5} }[/tex]
Step-by-step explanation:
[tex]\frac{9^{2} }{9^{7} } \to 9^{2-7} \to 9^{-5} \to \frac{1}{9^{5} }[/tex]
Helper's Message:
Hi! I hope this helped you :)
I wouldn't mind a Brainliest or a five-star rating!
-ChocoChocoCho
PLEASE HELP!
Which function is represented by the graph?
Answer:
Step-by-step explanation:
b
Answer:b
Step-by-step explanation:
Is the following number rational or irrational 0.5555?
Answer:
Simple.
The decimal 0.5555 is a rational number. It's a terminating decimal, since it doesn't end with an ellipsis.
What is the value of the expression when a = 4, b = 3 ,and c = 10?
3a4b−c
1
4
6
12
Step-by-step explanation:
hope it will help you....
A coin is tossed two times, then a month of the year is randomly selected. What is the probability of getting tails each time, and a month that starts with the letter J? I got 1/8 is that correct if not what’s the answer
Answer:
1/16
Step-by-step explanation:
1/2 getting tails
1/4 getting tails twice
3/12 getting a J month =1/4
1/4 x 1/4 =1/16
Answer:
1/16
Step-by-step explanation:
Given a fair coin, the probability of getting tails on any one toss =
P(tails) = 1/2
if a coin is tossed twice and we get tails both times,
P( 2 tails on 2 consecutive tosses) = (1/2)(1/2) = 1/4
Total number of months = 12 months
Months that start with J = January, June, July = 3 months
P(selecting months that start with J) = 3/12 = 1/4
Hence the probability of tossing 2 consecutive tails then selecting a month that starts with J
= (1/4) x (1/4)
= 1/16
List the following numbers in order from least to greatest.
4.2 x 10-2, 0.088, 8.9 x 10-3, 0.01
Answer:
0.01 , 0.088 , 4.2 x 10-2 , 8.9 x 10-3
Step-by-step explanation:
4.2 x (10.2).
4.2 x 8
=33.6
8.9 x (10-3)
8.9 x 7
=62.3
0.01 , 0.088 , 4.2 x 10-2 , 8.9 x 10-3
don't mind this question, there's gonna be another one thats actually relevent
Answer:
oke
Step-by-step explanation:
The given information were that Robi has run the first 4 miles of a race in 30 minutes and she reached the 6 mile point after 45 minutes. It is positive, negative, zero or undefined? The slope is 2/15 miles/minute
Answer:
Positive
Step-by-step explanation:
Slope: (6-4)/(45-30)
= 2/15
The slope of 2/15 miles/minute is positive, representing Robi's speed from the 4-mile mark to the 6-mile point of the race. It is calculated by taking the difference in distance and dividing it by the difference in time.
Explanation:The question presented is dealing with the concept of slope, which is a foundational aspect of algebra and indicative of the rate of change in a given situation. In this context, the slope represents Robi's speed or velocity during a race. Since Robi has run the first 4 miles in 30 minutes and reached the 6-mile point after 45 minutes, we can calculate her average speed (slope) between these two points. To find the slope (rate), we can use the change in distance over the change in time, which in this case is:
Change in distance (miles) = 6 miles - 4 miles = 2 miles
Change in time (minutes) = 45 minutes - 30 minutes = 15 minutes
Then, we calculate the slope:
Slope = Change in distance / Change in time = 2 miles /15 minutes = 2/15 miles/minute
This slope is a positive value, indicating that Robi's speed is in the forward or positive direction. It is not negative, zero, or undefined.
Additionally, the information provided about the percentage of runners and their speeds gives us a context within which we can compare Robi's speed to understand her performance relative to other runners. It's important to note that these percentages do not affect the calculation of the slope.
Find the exact volume of the cylinder
Answer:
Where is the cylinder?
Step-by-step explanation:
Sorry, cannot determine the solution to this problem. Unless, if it is pi times r squared times the height of the shape.
Answer these questions about the steps of simplifying this rational expression: 4x-8/x^2+3x-10 Part A What is the greatest common factor (GCF) of the terms in the numerator and in the denominator? Rewrite the expression by factoring out the GCF.
Answer:
GCF: (x - 2)
4 / (x + 5)
Step-by-step explanation:
The expression given is:
(4x - 8) / (x² + 3x - 10)
To find the greatest common factor, we have to factorise the numerator and denominator individually.
NUMERATOR:
4x - 8 = 4(x - 2)
DENOMINATOR:
x² + 3x - 10 = x² + 5x - 2x - 10
x² + 3x - 10 = x(x + 5) - 2(x + 5)
x² + 3x - 10 = (x - 2) ( x + 5)
So, the expression becomes:
4(x - 2) / [(x - 2) ( x + 5)]
We observe that the common factor in both numerator ad denominator is (x - 2).
This is the greatest common factor (GCF).
Factoring out (x - 2), the expression can be rewritten as:
4 / (x + 5)
Answer:
The terms in the denominator have a GCF of 1, so nothing gets pulled out in the denominator. The GCF of the terms in the numerator is 4.
Step-by-step explanation:
Find the area of the shape.
Answer: 64
Step-by-step explanation:
l x w
8 x 8
= 64 ft^2
Answer:The area of the shape is 16 pi unites
Step-by-step explanation:
Step 1: Find the area of the full circle
Step 2: Find the area of 1/4 a circle
64/4 pi = 16
Multiplying Polynomials and Simplifying Expressions
Given:
Polynomials: [tex]a+3 \text { and }-2 a^{2}+15 a+6 b^{2}[/tex]
To find:
The product of the polynomials.
Solution:
[tex](a+3)(-2 a^{2}+15 a+6 b^{2})[/tex]
Using distributive property: [tex]x(y+z)=xy+xz[/tex]
[tex](a+3)(-2 a^{2}+15 a+6 b^{2})=a(-2 a^{2}+15 a+6 b^{2})+3(-2 a^{2}+15 a+6 b^{2})[/tex]
Now multiply each of the first term with each of the second term.
[tex]=a\left(-2 a^{2}\right)+a \cdot 15 a+a \cdot 6 b^{2}+3\left(-2 a^{2}\right)+3 \cdot 15 a+3 \cdot 6 b^{2}[/tex]
Applying plus minus rule: [tex]+(-x)=-x[/tex]
[tex]=-2 a^{2} \cdot a+15 a \cdot a+6 a\cdot b^{2}-3 \cdot 2 a^{2}+3 \cdot 15 a+3 \cdot 6 b^{2}[/tex]
Apply the exponent rule: [tex]x^{n} \cdot x^{m}=x^{n+m}[/tex]
[tex]=-2 a^{3}+15 a^2+6 a b^{2}-6 a^{2}+45 a+18 b^{2}[/tex]
Add or subtract the like terms:
[tex]=-2 a^{3}+15 a^2-6a^2+6 a b^{2}+45 a+18 b^{2}[/tex]
[tex]=-2 a^{3}+9 a^{2}+6 a b^{2}+45 a+18 b^{2}[/tex]
Arrange in the order.
[tex]=-2 a^{3}+9 a^{2}+45 a+6 a b^{2}+18 b^{2}[/tex]
The product of [tex]a+3 \text { and }-2 a^{2}+15 a+6 b^{2}[/tex] [tex]-2 a^{3}+9 a^{2}+45 a+6 a b^{2}+18 b^{2}[/tex].
A rectangular field is 50 yards wide and 100 yards long. Patrick walks diagonally across the field. How far does he walk
Answer:
Patrick walk approximately 112 yards.
Step-by-step explanation:
Given:
A rectangular field is 50 yards wide and 100 yards long.
Patrick walks diagonally across the field.
Now, to find the distance he walk.
Length of the field = 100 yards.
Width of the field = 50 yards.
Now, to get the diagonal distance we put formula:
[tex]Diagonal = \sqrt{length^2+width^2}[/tex]
[tex]Diagonal = \sqrt{100^2+50^2}[/tex]
[tex]Diagonal = \sqrt{10000+2500}[/tex]
[tex]Diagonal = \sqrt{12500}[/tex]
[tex]Diagonal = 111.80[/tex]
Therefore, Patrick walk approximately 112 yards.
Using the Pythagorean Theorem, we find that the diagonal distance Patrick walks across the rectangular field is approximately 111.8 yards.
Explanation:To find how far Patrick walks when he travels diagonally across the rectangular field, we need to use the Pythagorean Theorem, which states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.
The rectangular field forms a right triangle when we draw the diagonal. One of the other sides of this triangle is the width of the rectangular field, and the other side is the length. So the lengths of the two sides of the right triangle are 50 yards (width) and 100 yards (length).
Applying the Pythagorean Theorem, we get the square of the hypotenuse (diagonal) equal to the square of 50 yards (2500 yard2) plus the square of 100 yards (10000 yard2). This results in 12500 yard2. The length of the diagonal is then the square root of 12500 yard2, which is approximately 111.8 yards.
So, Patrick walks about 111.8 yards when he travels diagonally across the field.
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Select the correct answer.
Cesar had a part-time job last year. He worked every week for the year and made $23 an hour. He worked 28 hours each week. Cesar saved
what was left of his earnings after paying all of his monthly expenses. At the end of the year, he had saved $3,360. What were Cesar's average
monthly expenses, rounded to the nearest dollar?
A
$1,288
B. $1,680
C. $2,403
D. $2,511
E. $2,791
Answer:
D. $2,511
Step-by-step explanation:
First off, we need to write down the facts we know.
There are about 52.177 weeks in a year
Cesar works 28 hours each week
Cesar makes $23 an hour
There are 12 months in a year
Cesar has $3,360 after his monthly expenses
To figure out how many hours are in a "work year," multiply the number of work hours in a week by the number of weeks in a year. In other words, multiply Cesar's 28 hour work week by about 52.177 weeks. That makes 1,456 hours in his work year. That means he makes $33,492 a year. If you multiply $2,511 by the months in a year (12), you get $30132. Finally, subtract his annual salary by $30132 to get $3,360, which is what was left of Cesar's earnings after paying all of his monthly expenses. This means that your answer is: D. $2,511.
Answer:
D. $2,511
Step-by-step explanation:
$23 x 28 x 52 = $33,488
$33,488 ÷ 12 = $2,790.66 = $2,791
12($2,791) - $3,360 = 30,132
$30,132 ÷ 12 = [$2,511]
What is the distance between the points (-3,-5) and (3, 3)?
A. 14
B. 2
C. 10
D. -2
Answer:
-2
Step-by-step explanation:
Answer: IT IS NOT -2 IT IS 10
Step-by-step explanation: