The product of -9(5-2x) is found by multiplying -9 by each term inside the parentheses resulting in -45 + 18x.
Explanation:The product of -9(5-2x) is found by distributing the -9 to both terms inside the parentheses. Following the rules of multiplication, when a negative number multiplies a positive number, the result is negative, and when a negative number multiplies a negative number, the result is positive. Hence:
-9 x 5 = -45
and
-9 x -2x = 18x.
Combining these results, we get the final expression:
-45 + 18x
Keep in mind that when simplifying expressions or performing multiplication, we need to adhere to the rules for multiplication of numbers with different signs, as described earlier.
Final answer:
The product of -9(5-2x) is calculated by using the distributive property to multiply -9 by each term inside the parentheses, yielding 18x - 45.
Explanation:
The product of -9(5-2x) can be found by applying the distributive property of multiplication over subtraction. This property states that you multiply the term outside the parentheses by each term inside the parentheses. Here are the steps:
Multiply -9 by the first term inside the parentheses (5), which is -45.
Multiply -9 by the second term inside the parentheses (-2x), which gives us +18x (note that a negative multiplied by a negative gives a positive).
Combine these two products to get the final result, -45 + 18x, or 18x - 45.
This demonstrates the rules of multiplication where multiplying two numbers with opposite signs results in a negative product, and multiplying two numbers with the same sign results in a positive product.
Use systems of equations to solve the problem.
A farmer raises wheat and oats on 180 acres. She plants wheat on 20 more acres than she plants oats on. How many acres of each crop does the farmer plants?
Can someone please help me I would appreciate it please!?!
I well mark brainliest if its explained and right.
Aisha owns an apparel store. She bought some shirts and jeans from a wholesaler for $3,900. Each shirt cost $12 and each pair of jeans cost $28. If she sold the shirts at 70% profit and jeans at 125% profit, her total profit was $3,885. How many shirts and jeans did she buy from the wholesalers? 101 shirts and 96 jeans
Answer:
The correct answer would be:
Step-by-step explanation:
150-shirts
75-jeans
The current San Francisco cable railway is driven by two large 14-foot-diameter drive wheels, called sheaves. Because of the figure-eight system used, the cable subtends a central angle of 270°on each sheave. Find the length of cable riding on one of the drive sheaves at any given time.
Answer:
The length of the cable is around 32.97 feet.Step-by-step explanation:
The problem is about a circular sector, where the angle is 270° and the lenght of the subtended arc is the arc is the unknown variable.
The radius of the drive wheel is
[tex]r=\frac{d}{2}=\frac{14}{2}=7ft[/tex]
The central angle is 270°.
The length of the arc is
[tex]L=\frac{2\pi r \theta}{360\°}[/tex]
Replacing all values, we have
[tex]L=\frac{2(3.14)(7)(270\°)}{360\°}=\frac{11869.2}{360} \approx 32.97[/tex]
Thereofre, the length of the cable is around 32.97 feet.
What is the surface area of the cone to the nearest whole number ? Use 3.14 for π
Answer:
1130.973355 is the answer
Step-by-step explanation:
pi10(10+sqrrt((24^2)+(10^2)))
31.416(10+sqrrt(576+100))
31.416(10+sqrrt(676))
31.416(10+26)
31.416(36)
1130.976
Each trip, a bus drops off more fans at a concert. On the first trip, the bus dropped off 30. On the 14th trip, which was the last one, the bus dropped off 95 fans. How many fans did the bus deliver to the concert in total
Answer: There are 875 fans the bus deliver to the concert in total.
Step-by-step explanation:
Since we have given that
On the first trip, the bus dropped off = 30
Here a = first term = 30
On the 14 trip, the last trip, the bus dropped off = 95
i.e. [tex]a_{14}=95[/tex]
So, the total number of fans the bus deliver to the concert is given by
[tex]S_{14}=\frac{n}{2}(a+a_n)\\\\S_{14}=\frac{14}{2}(30+95)\\\\S_{14}=7(30+95)\\\\S_{14}=125\times 7\\\\S_{14}=875[/tex]
Hence, there are 875 fans the bus deliver to the concert in total.
The area of a circle A is 85π ft2. ∠BAC is a central angle of the circle, and m∠BAC = 36°
What is the area of the 36° sector?
Question 1 options:
8.5πft2
10πft2
17πft2
21.25πft2
Anybody got an answer?
What is the interquartile range of the data set? Enter the answer in the box. 20,25,30,30,31,40,41,49
Answer:
13.0
Step-by-step explanation:
helpppppppppppppppppppppppppppp
Simplify the expression.
A) –24n + 8mn – 100np
B) –6n – 2mn + 25np
C) –6n + 2m – 25np
D) –6n + 2mn – 25np
Old macdonald had a total of 37 chickens and pigs on this farm. there was a total of 98 feet. how many chickens were there and how many pigs?
The required, there were 25 chickens and 12 pigs on Old MacDonald's farm.
To solve this problem, we can use a system of equations to represent the number of chickens and pigs on Old MacDonald's farm. Let x be the number of chickens and y be the number of pigs. Then we have:
x + y = 37 (equation 1)
2x + 4y = 98 (equation 2)
Equation 1 represents the total number of animals, and Equation 2 represents the total number of legs. We can simplify equation 2 by dividing both sides by 2:
x + 2y = 49 (equation 3)
Now we have two equations with two variables. We can solve for x and y by using substitution or elimination. Let's use elimination by multiplying equation 1 by 2 and subtracting it from equation 3:
x + 2y = 49
-2x - 2y = -74
x = -25
Solving for x, we get:
x = 25
Substituting x = 25 into equation 1, we get:
25 + y = 37
Solving for y, we get:
y = 12
Therefore, there were 25 chickens and 12 pigs on Old MacDonald's farm.
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The equations are c + p = 37 and 2c + 4p = 98. Solving the system of equations the numbers are 26 and 11, respectively.
Explanation:To solve this problem, we can use a system of equations.
Let's assume that the number of chickens is represented by 'c' and the number of pigs is represented by 'p'. Based on the given information, we can create two equations:
1. c + p = 37 (equation 1)
2. 2c + 4p = 98 (equation 2)
We have two equations with two variables, so we can solve this system of equations to find the values of 'c' and 'p'.
Using equation 1, we can express 'c' in terms of 'p': c = 37 - p.
Substituting this into equation 2, we get: 2(37 - p) + 4p = 98. Solving this equation, we find: p = 11.
Substituting the value of 'p' back into equation 1, we find: c = 26.
Therefore, Old MacDonald had 26 chickens and 11 pigs on his farm.
50 POINTS PLEASE HELP show work answer all 3
Answer:
b.) The graph's x-intercepts are similar to ½(x - 5)(x + 2).
a.) [-2, 0], [5, 0]
__________________________________________________________
b.) The graph has a maximum value because the graph opens down [-2 = A].
a.) [-3, -4]
__________________________________________________________
d) [0, -5]
c) -2 = x
b) [-2, -9] → [h, k]
a) -1, 5 = x
Explanation:
b) Both graphs have the binomial of [x - 5][x + 2], so the x-intercepts never altered.
a) Set the binomial equal to zero, and you will get your x-intercepts of [-2, 0] and [5, 0].
__________________________________________________________
b) When A is negative, your graph will have a maximum value [opens down], whereas when A is positive, your graph will have a minimum value [opens up].
a) According to the Vertex Formula, y = A[X - H]² + K, [H, K] represents the vertex, plus, -H gives you the OPPOSITE TERMS OF WHAT THEY REALLY ARE, so be EXTREMELY CAREFUL labeling your vertex. Additionally, K gives you the NORMAL TERMS.
__________________________________________________________
d) The y-intercept is your C-term, so in this case, it is [0, -5].
c) To find the axis of symmetry, use this formula:
[tex] \frac{-b}{2a} = x[/tex]
Whatever the opposite of your B-term is, you take that and divide it by twice your A-term.
b) To find the vertex, in this case, you have to go from Standard Form to Vertex Form by completing the square, using this formula to get part of your new C-term:
[tex][\frac{b}{2}]^{2} [/tex]
When done, you get this:
[tex]y = {x}^{2} + 4x + 4 \\ \\ y = [x + 2]^{2} [/tex]
Then, you have to deduct some number from 4 that gave you -5 in the first place, and that integer is -9. So, here is the result:
[tex]y = [x + 2]^{2} - 9[/tex]
From here, we can see that our vertex is [-2, -9].
a) When the binomial is set to equal to zero, you get this:
[tex]{x}^{2} + 4x - 5 \\ \\ [x - 1][x + 5] = 0 \\ \\ 1, \: -5 = x[/tex]
e) See above photograph
I am joyous to assist you anytime.
8- 2 to the root of 4+8*2^3-(3+14-5)/12
I don't know if this makes sense but I need help with it.
Uli wants to write the phrase “the difference of seven and a number squared” as an algebraic expression. She wrote out several expressions in the table. Which expression correctly represents the phrase?
Answer:
The Algebraic expression that correctly represents the phrase 'the difference between 7 and a number squared' is
= 7 - x²
Step-by-step explanation:
Let's represent the unknown number be represented as x
The unknown number is also squared = x²
Therefore, the Algebraic Equation correctly representing the phrase 'difference of 7 and a number squared' is
= 7 - x²
Anita brings 6 dolls to her grandmas house. These dolls represent 20% of Anita's doll collection. What is the total number of dolls in Anita's dolls collection?
Answer:
30 is your answer
Step-by-step explanation:
A person jogged 10 times along the perimeter of a rectangular field at the rate of 12 kilometers per hour for 30 minutes. if field has a length that is twice its width, find the area of the field in square meters. ________________________________________
What does the Pythagorean Theorem state about the sides of a right triangle if the legs of triangle have the measurement of a and b and the hypotenuse of the triangle measures c?
At combs store there is a 25% chance a customer enters the store within one minute of closing time. Describe the complementary event and find its probability
Which inequality is equivalent to -6x ≥ 30?
PLEASE ANSWER AS SOON AS POSSIBLE! THANK YOU.
a: x ≥ 5
b: x ≥ -5
c: x ≤ 5
d: x ≤ -5
The inequality [tex]\(-6x \geq 30\)[/tex] is equivalent to [tex]\(x \leq -5\)[/tex]. Therefore, the correct answer is option d: [tex]\(x \leq -5\)[/tex].
To solve the inequality [tex]\(-6x \geq 30\)[/tex] and find its equivalent form, follow these steps:
1. Write down the original inequality:
[tex]\[ -6x \geq 30 \][/tex]
2. Isolate [tex]\(x\)[/tex] by dividing both sides of the inequality by [tex]\(-6\)[/tex]:
- Note that when dividing both sides of an inequality by a negative number, the direction of the inequality sign must be reversed.
[tex]\[ \frac{-6x}{-6} \leq \frac{30}{-6} \][/tex]
3. Simplify both sides:
[tex]\[ x \leq -5 \][/tex]
So, the equivalent inequality to [tex]\(-6x \geq 30\)[/tex] is [tex]\(x \leq -5\)[/tex].
Therefore, the correct answer is:
[tex]\[\boxed{\text{d: } x \leq -5}\][/tex]
Oliver and Peter had the
same length of string. Oliver used 3
4 of
his string to tie a bundle of newspapers.
Peter used 6
8 of his string to tie a bundle
of magazines. Who used more string?
Draw a number line and write a
comparison to show your answer
Answer:
Oliver and Peter both uses same length string.
Explanation:
Suppose length of rope or string = x meters
Oliver divide his rope into four equal parts
[tex] \frac{1}{4}, \frac{1}{4}, \frac{1}{4}, \frac{1}{4} [/tex]
Each part length is [tex] \frac{1}{4} [/tex]
NOw Oliver used 3 part of the string out of four parts
that means total used string is 3/4
Now peter also have same length of string = x meter
He divides the string eight equal parts and use the 6 parts out of 8
each part length is :[tex] \frac{x}{8} , \frac{x}{8} , \frac{x}{8} , \frac{x}{8} , \frac{x}{8} , \frac{x}{8} , \frac{x}{8} , \frac{x}{8} [/tex]
Use 6x/8
simplify the fraction 6x/8
divide by 2 both numerator and denominator
6x/8 = 3x / 4
So both uses same part of string.
Carla sells hot coffee, cider and tea from a sidewalk cart near wall street in new york city. last month she sold $4,500 worth of product to 1,000 customers. she spent $800 on buying her beverages in bulk. her monthly costs are: utilities = $100, salary = $2,000, advertising = $0, insurance = $0, interest = $0, rent (cart) = $600, depreciation = $0. calculate carla's average sale per customer.
The average sale per customer for Carla is $4.50.
To find Carla's average sale per customer, we need to determine the total revenue and the total number of customers.
The average sale per customer is calculated by dividing the total revenue by the total number of customers.
Given:
- Total revenue for the month: $4,500
- Total number of customers for the month: 1,000
The average sale per customer is calculated as:
[tex]\[ \text{Average sale per customer} = \frac{{\text{Total revenue}}}{{\text{Total number of customers}}}. \][/tex]
Plugging in the given values:
[tex]\[ \text{Average sale per customer} = \frac{{4,500}}{{1,000}} = 4.5. \][/tex]
Thus, the average sale per customer for Carla is $4.50.
Question :
Carla sells hot coffee, cider and tea from a sidewalk cart near wall street in new york city. last month she sold $4,500 worth of product to 1,000 customers. she spent $800 on buying her beverages in bulk. her monthly costs are: utilities = $100, salary = $2,000, advertising = $0, insurance = $0, interest = $0, rent (cart) = $600, depreciation = $0. calculate carla's average sale per customer.
What is the median of this data set?
The median of a data set with an even number of values is calculated by taking the average of the two middle values. For a data set with an odd number of values, the median is simply the middle value.
Explanation:The median of a data set with an even number of values is calculated by taking the average of the two middle values. For example, if the data set is 6.8, 7.2, the median would be (6.8 + 7.2) / 2 = 7.
However, if the data set has an odd number of values, the median would simply be the middle value. For example, if the data set is 3, 5, 8, the median is 5.
It's important to note that the median is used to find the middle value of a data set and is often preferred over the mean when there are outliers in the data.
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A used book store buys a hardback book for $1.50 and then sells it for $5. Over time, the store sells the same number of books it buys. The store manager can use the equation P(x)=5x−1.5x to determine the store's profit, P(x), where x is the number of books that the store sells. Which statement about the book store is true based on the profit equation?
A.The book store makes a profit of $5.00 for each hardback book that is sold.
B.The book store makes a profit of $3.50 for each hardback book that is sold.
C.The book store makes a profit of $4.50 for each hardback book that is sold.
D.The book store sells each hardback book for $3.50
A used book store buys a hardback book for $1.50 and then sells it for $5. Over time, the store sells the same number of books it buys. The store manager can use the equation P(x)=5x−1.5x to determine the store's profit, P(x), where x is the number of books that the store sells. Which statement about the book store is true based on the profit equation?
Cost Price of book, C.P.=$1.50
Selling Price of book, S.P.=$5
PROFIT=S.P. -C.P.
So, Profit=$5-$1.50=$3.50
So, Profit=$3.50 on each book
Or, we are given P(x)= 5x-1.50x
Or, P(x)=3.50x
For each book, we must divide the profit P(x) by x, that is, number of books
[tex] \frac{P(x)}{x}=\frac{3.5x}{x} [/tex]
[tex] \frac{P(x)}{x}=\frac{3.5*1}{1} [/tex]
[tex] \frac{P(x)}{x}=3.5 [/tex]
So, Profit for each book sold is $3.50
Answer:Option C
Answer:
C
Step-by-step explanation:
im too smort
Graph the following inequality and then select the correct graph below.
x - y - 2 ≥ 0
Answer:
Second graph
Step-by-step explanation:
Given inequality,
x - y - 2 ≥ 0
⇒ x - y ≥ 2
The related equation of the inequality,
x - y = 2
Having x-intercept = (2, 0)
y-intercept = (0,-2),
Also, 0 - 0 ≥ 2 ( False )
Thus, the inequality will not contain the origin,
Again,
'≥' shows the solid line.
Hence, by the above explanation it is clear that the SECOND graph would be the graph of given inequality.
Which pair of angle measures represents a pair of complementary angles
35 and 55
45 and 55
45 and 125
55 and 123
In a detection experiment, randy says "yes" to 90% of the trials, and perry says "yes" to 70% of the trials. our best conclusion from this study is
The 4,000 students at Tech High were surveyed about their use of text messaging. How many students said they text 50-100 times a day?
Answer:
3000
Step-by-step explanation:
75% of 4000 students
How can you check to see if two ratios form a proportion? Explain the method you used to find the answer to the previous problem.
Answer:
Write a proportion using the ratios. Find the cross products. If the cross products are equal, then the ratios form a proportion.
Step-by-step explanation:
Use the parabola tool to graph the quadratic function f(x)=−5x2−2.
Graph the parabola by first plotting its vertex and then plotting a second point on the parabola.
[tex] \text{Consider the quadratic function}\\ \\ f(x)=-5x^2-2\\ \\ \text{For a quadratic equation, }f(x)=ax^2+bx+c, \text{ we know that the x-coordinate}\\ \text{of the vertex (h,k) is given by}\\ \\ h=\frac{-b}{2a}\\ \\ \text{on comparing the given equation with standard equation, we have} [/tex]
[tex] a=-5, b=0, c=-2\\ \\ \text{so the x-coordinate of the vertex is }\\ \\ h=-\frac{b}{2a}=-\frac{0}{2(-5)}=0\\ \\ \text{so plug this vlaue of the h in the given function to get the y-coordinate}\\ \text{of the vertex. so}\\ \\ f(x)=-5(0)^2-2=0-2=-2\\ \\ \text{hence the vertex of the parabola is: }(h,k)=(0,\ -2)\\ \\ \text{A second point on the graph can be found by putting x=1, so }\\ \\ f(1)=-5(1)^2-2=-5-2=-7\\ \\ \text{so one other point on the parabola is }(1,-7) [/tex]
The grpah of the quadratic function is shown below:
Answer:(0,-2) (1,-7)
Step-by-step explanation: