i need help with this i don't know what to do
Aisha is working two summer jobs, making $7 per hour babysitting and $8 per hour landscaping. last week aisha worked 2 more hours babysitting than hours landscaping and earned a total of $134. write a system of equations that could be used to determine the number of hours aisha worked babysitting last week and the number of hours she worked landscaping last week. define the variables that you use to write the system.
Answer:
Let b represent the number of hours babysitting, and let l be the number of hours landscaping. We have this system of equations:
[tex]7b + 8l = 134[/tex]
[tex]b = l + 2[/tex]
The number of days, d, taken to harvest the corn in a field is inversely proportional to the number
of men, m, who help.
1. Explain what happens to the number of days taken to harvest the corn if the number of men is
doubled.
I NEED HELP ON THIS QUESTION. I CAN'T SEEM TO GET THE LAST MARK
The dimensions of this cuboid are 2 cm, 11 cm, and 17 cm respectively.
How to calculate the volume of a geometric figure?Mathematically, the volume of a cuboid can be calculated by using this following formula:
Volume = L × W × H
Where:
L is the length of a cuboid.W is the width of a cuboid.H is the height of a cuboid.Substituting the given parameters into the formula, we have;
Volume = 2 × (x + 3) × (x + 9)
374 = 2 × (x² + 9x + 3x + 27)
374 = 2 × (x² + 12x + 27)
Dividing both sides by 2, we have:
187 = x² + 12x + 27
Rearranging the equation, we have:
x² + 12x + 27 - 187 = 0
x² + 12x - 160 = 0
Next, we would solve the quadratic equation by using the factorization method as follows:
x² + 12x - 160 = 0
x² + 20x - 8x - 160 = 0
x(x + 20) - 8(x + 20) = 0
(x - 8)(x + 20) = 0
x = 8 or x = -20
Since the dimensions cannot be negative, the value of x is equal to 8.
Check:
x² + 12x - 160 = 0
8² + 12(8) - 160 = 0
64 + 96 - 160 = 0
160 - 160 = 0 (True).
For the dimensions, we have:
Width = x + 3 = 8 + 3 = 11 cm.
Height = x + 9 = 8 + 9 = 17 cm.
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WILL GIVE BRAINLEIST
Which steps show how to use distributive property to evaluate 5 x 38
Answer:
A
Step-by-step explanation:
When distributing, you multiply the outside number to each number in the inside as well as looking at the operation inside the parenthesis. Hope this helps!
9. the school district is served by four buses, each of which delivers students to three different schools. you know the cost of transporting each of the students to each of the schools, and you want to determine the least expensive way to get all of the students to their schools. if you use excel solver for this analysis, how many different variable cells should you use?
If you use excel solver for this analysis, the number of different variable cells should you use are 12
Option- C
The right answer is 12.
Given that,
There are four buses that transport children to the district's three main schools. You are aware of the price of transporting each student to each school.
Since there are four buses and three schools according to the supplied description, each bus has three school alternatives, thus 4*3=12, bearing in mind that there must be the least expensive route to transport all of the students to their schools.
There must therefore be 12 separate variable cells employed.
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A sports shop had a bike for sale for NOK 7,000. The price of the bike was reduced twice. First with 15%. Then with 30%.
a) How much did the illness cost now?
b) By how many percent has the price been reduced in total?
Louis and Michael met up for lunch. When they were done,
Louis traveled 4 blocks east and Michael traveled 1 blocks west. How many blocks away from Louis was Michael?
Answer:
five blocks away
Step-by-step explanation:
because 4 +1 =5
please if it is wrong let me know so I can correct
Laws of Exponents
please follow the laws of the exponents to find this answer
The answer to the given expression 2⁴· [(2²·2⁴)⁻³/2¹⁴] would be 2⁻²⁸ which is determined by the laws of the exponents.
What are the laws of the exponents?The product rule is an exponent rule that states that when you multiply similar bases, the add exponents.
For example, (a²)·(a³) = a²⁺³ = a⁵
In the power rule, elevating one exponent to a second multiplies the exponents.
For example, (a²)³ = a²ˣ³ = a⁶
The given expression would be as
⇒ 2⁴· [(2²·2⁴)⁻³/2¹⁴]
As per the laws of the exponents, the solution would be as :
⇒ 2⁴· [(2²⁺⁴)⁻³/2¹⁴]
⇒ 2⁴· [(2⁶)⁻³/2¹⁴]
⇒ 2⁴· (2⁻¹⁸/2¹⁴)
⇒ 2⁴· (2⁻¹⁸⁻¹⁴)
⇒ 2⁴· (2⁻³²)
⇒ 2⁴⁻³²
⇒ 2⁻²⁸
Therefore, the answer would be 2⁻²⁸.
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In September, Liberty Elementary School collected 32,537 cans for a fundraiser. In October, they collected 207,492 cans.
a. About how many cans were collected during September and October? Round to the nearest thousand.
b. Which of these estimates will produce a more accurate answer rounding to the nearest thousand or rounding to the nearest ten thousand?
Rounding off to nearest ten thousand gives the most accurate answer as 240,000 cans.
Given that, the number of cans collected during September = 32,537 and the number of cans collected during October = 207,492.
What is rounding off numbers?Rounding numbers means adjusting the digits (up or down) to make rough calculations easier. The result will be an estimated answer rather than a precise one.
a) Now, the number of cans were collected during September and October = 32537+207492 = 240,029
To the nearest thousand is 240,000
b) Rounding 32,537 to the nearest thousand is 32000 and rounding 207,492 to the nearest thousand is 207,000
Sum = 32000+207000 = 239,000
Rounding 32,537 to the nearest ten thousand is 30000 and rounding 207,492 to the nearest ten thousand is 210,000
Sum = 30000+210,000 = 240,000
Therefore, rounding off to nearest ten thousand gives the most accurate answer as 240,000 cans.
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3) (p3) consider the proof for the following theorem: there is no smallest integer.assume that there exists a smallest integer, r. since r is an integer, it can be negative. since there is no smallest negative integer and r can be negative, this contradicts the assumption that there is no smallest integer. what is the mistake in this proof?
The mistake is that, what we have to prove is taken as a known fact.
A theorem is a statement that can be proved or has already been proved true by a logical argument.
"there is no smallest negative integer" is taken as a fact
but it is the part of the theorem that we have to prove,
Therefore, we can conclude that the mistake in the given proof is what we have to prove is taken as a known fact.
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Standard to slope intercept form
Answer: y = -3x - 2
Step-by-step explanation:
slope intercept form: y=mx+b
How many flowers spaced every 6 inches are needed to surround a circle garden with a 125 feet radius. Use three. 3.14 pi.
You would require 1,570 flowers in space of every 6inch to surround the garden with 125feet radius.
First, we need to calculate the circumference of the circle. The formula for the circumference of the circle is:
C = 2πr
If we substitute 125ft for r and use 3.14 to approximate π
we get a circumference of:
C = 2 * 3.14 * 125
C = 6.28 *125
C = 785ft
We can now convert the circumference in feet to inches as follow;
As we know that 1ft = 12inches
∴ 785ft = 12(785) inches = 9,420 inches.
To find how many flowers we need we can divide the circumference in inches by the 6 inches between flowers giving:
=[tex] 9,420in\ X \ \frac{1\ flower}{6 in} [/tex]
=[tex] \frac{9,420}{6 } \ flower [/tex]
=1,570 flowers
Hence You would require 1,570 flowers in space of every 6inch to surround the garden with 125feet radius.
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From your home, the route to the store tat passes the beach is 2 miles shorter than the route to the store that passes the park. What is the length of each route.
Answer:
Step-by-step explanationFrom your home, the route to the store tat passes the beach is 2 miles shorter than the route to the store that passes the park. What is the length of each route.:
A circular wimming pool has a radius of 15 ft. There is a path all the way around that pool that is three feet wideWhat is the circumference of the outer edge of the path around the pool? Use 3.14 for pi
Given:
Radius of circular swimming pool = 15ft
Radius of the path around the pool = 3ft
radius of outer edge of the pool = 15 + 3 = 18ft
To find the circumference of the outer edge of the path around the pool, use the formula below:
[tex]C\text{ = 2}\pi\text{ r}[/tex]where,
r = 18 ft
pi = 3.14
Thus, we have:
[tex]C\text{ = 2 }\ast\text{ 3.14 }\ast18\text{ = }113.04\text{ ft}[/tex]Therefore, the circumference of the outer edge of the path around the pool is 113.04 ft
ANSWER:
113.04 ft
Sandi’s commission rate is 5.6%. She received a commission of $2,412 on vacation packages she sold in November. What is the amount of money in vacation packages that Sandi sold? Round to the nearest dollar.
Answer:
$43071
Step-by-step explanation:
Commission = 5.6%
So $2,412 represents 5.6% of total value of sold vacation packages
Image the numbers as ratios:
$2,412 : 5.6%
X : 100%
To get from 5.6% to 100% you can divide by 5.6 and then multiply by 100
So to find X you do:
(2,412 / 5.6)*100 = 43071.428…
Now round the answer to nearest dollar:
43071.428… = $43071 (to nearest dollar)
jimmy read 2/15 of a book on Monday, 1/3 on Tuesday, 2/9 on Wednesday and 3/4 of the remainder on Thursday. If he still had 14 pages left to read on Friday, how many pages were there in the book?
The total number of pages in the book is 180.
Total number of pages:
It refers the number of pages in the prescribed book.
And if we want to find the total number of pages, then we have to add the read pages and the remaining pages.
Given,
Jimmy read 2/15 of a book on Monday, 1/3 on Tuesday, 2/9 on Wednesday and 3/4 of the remainder on Thursday. If he still had 14 pages left to read on Friday.
Here we need to find the total number of pages in the book.
Let us consider x be the number of pages in the book.
The portion of book read by Jimmy on Monday is 2/15
The portion of book read by Jimmy on Tuesday is 1/3
The portion of book read by Jimmy on Wednesday is 2/9
The portion of book read by Jimmy on Thursday is 3/4
And the remaining pages to read on Friday is 14
So, the total of all is:
=> x (2/15 + 1/3 + 2/9)
=> x (6 + 15 + 10)/45
=> 31x/45
So, for Thursdays, he reads 3/4 of the remainder of the book.
He has (1 - 31/45)x left that is 14x/45.
So, he reads 3/4 of this; which is
=> 3/4(14x/45) = 42/180x.
Therefore, until Thursday he has read
=> 31/45x + 42/180x.
We know that here 180 would be a common denominator;
Now we have to convert these fractions,
Then we have,
124/180x + 42/180x = 166/180x
Up to this point, he has 14 pages left;
Therefore, this means he has read 14 pages less than x, the total number of pages.
Then the given equation is written as,
166/180x = x-14
0 = 14/180x - 14
Adding 14 to each side gives us, then we get,
14 = 14/180x
14(180)/14 = x
180 = x
Therefore, there are 180 pages in the book.
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Solve Equation
Oct 12, 11:23:17 PM
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A group of friends wants to go to the amusement park. They have $134.50 to
spend on parking and admission. Parking is $14.50, and tickets cost $24 per
person, including tax. How many people can go to the amusement park?
Answer: You can only bring 5 people maximum.
Step-by-step explanation:
1) Set up the equation
(>= greater than or equal to)
134.50 >= 24x +14.5
We set up the equation here with 24x as x is the amount of people. 14.5 is the starting value as it never changes. 134.50 is the amount that they can't overspend.
2) Solve the equation
134.50 >= 24x +14.5
120>= 24x
5>= x
3) Solve
You can only bring 5 people maximum.
The width of a desk is 25 inches, or 63.5 centimeters. If a measurement in inches varies directly with a measurement in centimeters, what is the length, in centimeters, of a notebook that is 11 inches long? Round your answer to the nearest hundredth, if necessary.
2.54 centimeters
4.33 centimeters
27.94 centimeters
47.63 centimeters
The notebook's length in centimeters is 27.94 cm.
Since we are provided that
The desk's width is 25 inches.
Convert into cm.
There is a stated measurement of 25 inches = 63.5 cm.
As previously stated, a measurement in inches differs directly from a measurement in centimeters.
As a result, we have said that
If the notebook's length is 11 inches
Let 'x' be the length of the notebook in cm.
As a result of the question,
[tex]\frac{25}{63.5} = \frac{11}{x}[/tex]
[tex]x=\frac{698.5}{25}[/tex]
x = 27.94 cm
Hence the length of note book is 27.84 cm.
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6,
12 24
5'25'
Find the 7th term.
The general form of terms of a Geometric Progression Formulas is a, ar, [tex]$$\mathrm{a} r^2[/tex], [tex]$$\mathrm{a} r^3$[/tex], and so on then the 7th term of the series 6, 12, 24, ........... is 384
How to find the 7th term of the series?Let the first term (a) be 6.
The given series is in geometric progression,
we know that, 7th term = a × [tex]$$r^{7-1}[/tex] = a[tex]$ r^6[/tex]= [tex]6 \times(2)^{6}[/tex] = 384
The general form of terms of a Geometric Progression Formulas is a, ar, [tex]$$\mathrm{a} r^2[/tex], [tex]$$\mathrm{a} r^3$[/tex], and so on.
Here, a is the first term and r is the common ratio.
The nth term of a Geometric Progression Formulas is [tex]$T_n=a r^{n-1}$[/tex]
Common ratio [tex]$=\mathrm{r}=T_n / T_{n-1}$[/tex]
Therefore, the correct answer is 384.
The complete question is:
Find the 7th term of the series 6,12,24,....?
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Two gongs strike at intervals of 22 and 77 minutes respectively. At what time will
they strike together again if they start simultaneously at 12 noon ?
Click here to enter answer
The time that both gongs will strike together again after striking simultaneously at 12 noon is 2 : 34 pm.
What time would the gongs strike together?The time the gongs will strike together again can be determined by calculating the least common multiple of 22 and 77. The multiple of a number is the product of a number and another number. For example, a multiple of 2 is 10. The least common multiple is the smallest multiple that is common to two or more numbers.
The least common multiple would be determined using the prime factorisation method.
Prime factors of 22 = 2 x 11
Prime factors of 77 = 7 x 11
The least common multiple = 2 x 7 x 11 = 154
The next time both gongs would strike at the same time is 154 minutes or 2 hours 34 minutes
12 noon + 2 hours + 34 minutes = 2 : 34 pm
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the sum of four times a number and six divided by the number squared
Answer: 4x+6/x^2
Step-by-step explanation:
a random sample of 130 mortgages in the state of mississippi was randomly selected. from this sample, 20 were found to be delinquent on their current payment. what is the mean of the sampling distribution of the proportion of delinquent payments?
For a random sample of 130 mortgages with 20 delinquents on their current payment, the mean of the sampling distribution of the proportion of delinquent payments is not possible to say because population proportion is not known.
A random sample refers to a randomly selected subset of the population. In random sampling, each member of the population has an equal chance of selection, reducing the risk of selection bias. Random sampling ensures that the conclusion drawn from the sample should approximate the results obtained if entire population had been measured. The mean of the sampling distribution is the mean of the population from which results were sampled. As the population proportion (fraction of the population with certain characteristic) is unknown, the mean cannot be determined.
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Water is filling a swimming pool at a constant rate. After 4 hours, 2 inches of water have filled the pool.
C) Write an equation that gives the amount of water, w, after t hours.
Answer:
Step-by-step explanation:
u will have 1 niche of water in 2 hours
PLEASE HELP FAST!!!!
Answer: 0.01 more
Step-by-step explanation:
60% sure!
Kate used a 30% off coupon to purchase a sweater. If she paid $33.60, what was the original price of the sweater
The original price of the sweater is $48.
Given that, Kate used a 30% off coupon to purchase a sweater.
What is an equation?In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
The cost of sweater is $33.60
Let the original price of the sweater be x
Now, x-30% of x=33.60
⇒ x-30x/100 = 33.60
⇒ x -3x/10 =33.60
⇒ 7x/10 =33.60
⇒ 7x=336.0
⇒ x=48
Therefore, the original price of the sweater is $48.
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Will the product of negative 1/3 ⁵⁰ B positive or negative? How do you know?
the product of negative 1/3 ⁵⁰
The expression is :
[tex](-\frac{1}{3})^{50}[/tex]Since the product of negative to negative is positive
and negative x negative x negative = negative
Thus, if we multiply the negative upto odd number times the resultant will be negative
if we multiply the negative upto even number times the resultant will be positive
In the given expression we multiply (-1/3) upto 50 times
50 is the even number so the the resultant value will be positive
Answer : Positive
becasue if we multiply the negative upto odd number times the resultant will be negative & if we multiply the negative upto even number times the resultant will be positive
A. Use inductive reasoning to predict the next line in this sequence of computations. Then use a calculator or perform the arithmetic by hand to determine whether your conjecture is correct.B.Make a conjecture by predicting the correct numbers in the line below.
Answer: Following the pattern, the prediction for the next numbers is as follows:
[tex]\begin{gathered} 9\times9+7=88 \\ 98\times9+6=888 \\ 987\times9+5=888,8 \\ 9876\times9+4=888,88 \\ 98765\times9+3=888,888 \end{gathered}[/tex]Confirmation by calculator use:
[tex]\begin{gathered} 98,765\times9+3=888,888 \\ 888,885+3=888,888 \end{gathered}[/tex]Therefore the predicted numbers are the correct one.
Find the value of k if the line 2y+k=2+x is tangent to the parabola y=2x^2 +6x +3.
The value of k is -1 of tangent over the parabola.
Equation of a line: y = (2 + x - k) ÷ 2, in line form of y = mx + c.
Equation of the parabola: x² = (y - 6x - 3) ÷ 2
Given,
y = (x ÷ 2) + (1) - (k ÷ 2)
where, m = 1 ÷ 2 and c = (1 - k) ÷ 2
For parabola equation in parabola form,
y = 2x² + 6x - 3
y = 2(x² + 3x - n) - 3
n = (b ÷ 2)²
n = (6 ÷ 2)²
n = 9
y = 2(x² + 3x - 9 + 9) - 3
y = 2(x² + 3x + 9) - 9 - 3
y = 2(x² + 3x + 9) - 12
y = 2(x + 3)² - 12, Hence the parabola equation is in vertex form.
Now, comparing the above vertex form with the parabola equation,
x² = 4ay
(x + 3)² = (y ÷ 2) + 6
where a = 1 ÷ 2
Now using the condition of tangency c = a ÷ m
c = (1 - k) ÷ 2
m = 1 ÷ 2
a = 1 ÷ 2
(1 - k) ÷ 2 = (1 ÷ 2) ÷ (1 ÷ 2)
1 - k = 2
k = -1
Therefore, the value of k is -1.
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find the rate of change of the volume of a cylinder when its radius is 6 feet if its height is always (3/2) times its radius and its radius is increasing at the rate of 2 feet per minute.
When the radius of a cylinder is 6 ft. and it is increasing at the rate of 2 feet per minute, its volume will change at rate of 509.14 ft³/minute.
Given a cylinder with:
r = radius
h = height = 3/2 . r
The volume of the cylinder is:
V = πr².h
Substitute h = 3/2 . r,
V = πr².(3/2 r)
V = 3/2 . πr³
Take the derivative with respect to t:
dV/dt = 9/2 . πr² . dr/dt
Substitute dr/dt = 2 ft./minute and r = 6 ft.,
dV/dt = 9/2 . π.6²
dV/dt = 9/2 . π.6² = 509.14 ft³/minute.
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