Answer:
To find x-intercept ,let y=0
0=x²-4x-21
(x+3)(x-7)=0
x=-3 or x=7
(-3;0) or (7;0)
To find vertex
x=
[tex] \frac{ - b}{2a} = x[/tex]
x=4/2=2
y=(2)²-4(2)-21=-25
(2;-25)
choose A and E
Help now please. Will mark brainliest
Answer:
The expression that shows a valid step in
the process of finding the decibel level of the noise is dB = 10 log 150,000. Option C is correct
Given the equation for calculating the intensity of sound which is measured in decibel expressed as:
dB=10 log l
where;
I is the ratio of the sound to the human hearing threshold
Given that noise is 150,000 times greater than the human hearing threshold.
Substitute | = 150,000 into the expression above;
dB = 10 log 150,000
If this is correct, brainliest please.
is 4/3 and 3/4 equivalent fractions
Answer:
no
Step-by-step explanation:
3/4 is equivalent to 6/8,9/12, and 15/20
Solve |3x-2| = |x + 1|
The value of x for given MOD equation is 1.5.
What is MOD?The portion left over after dividing one integer by another is known as the modulo (or "modulus" or "mod"). As an illustration, 100 9 = 11 with a leftover of 1, hence 100 mod 9 equals 1.
When two numbers are split, the modulo operation in computing yields the remainder or signed remainder of the division (called the modulus of the operation).
According to the given value;
|3x-2|=|x+1|
3x-2=x+1
3x-x=1+2
2x=3
x=3/2 = 1.5
The value of x for given MOD equation is 1.5.
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10 times a number equals 10 less than 12 times a number what is the number
Answer:
Step-by-step explanation:
Mathematically the statement can be written as 10x=12x-1010x-12x=-10-2x=-10[tex]\frac{-2x}{-2} =\frac{-10}{-5} \\x=5[/tex]That number is 5Answer:
10×V=10-12×V=Step-by-step explanation:
this is how for I understand it buh if am wrong my badCan Σx² be negative? Why or why not
Solve: -8+6x+5X+-11-7
[tex]\bold{H \: e \: y \: o \: !}[/tex]
____________________
Let's simplify step-by-step ~
______________________
[tex]\sf{-8 \: + \: 6x \: + \: 5x \: + \: - \: 11 \: - \: 7}[/tex]
[tex]\sf{= -8 \: + \: 6x \: + 5x \: + \: - \: 11 \: + \: - \: 7}[/tex]
_______________________
Combine like terms:
[tex]\sf{= \: -8 \: + \: 6x \: + \: 5x \: + \: - \: 11 \: + \: -7}[/tex]
[tex]\sf{= \: (6x \: + \: 5x) \: + \: (-8 \: + \: -11 \: + \: -7)}[/tex]
[tex]\sf{= \: 11x \: + \: -26}[/tex]
[tex]\huge{\mathcal{\boxed{\rightarrow \: = \: 11x \: - \: 26}}[/tex]
Hope It Helps!
A n s w e r e d : - ᴀᴅʀɪᴀɴɴᴏɪʀ
The blue prints (scale drawing) of a new strip mall are 2 feet by 9 feet. The actual strip mall is 200 feet by 900 feet. What is the scale factor from the blue prints to the actual mall?
The scale factor from the blue prints to the actual mall is 1:100.
How to calculate the value?From the information, the blue prints (scale drawing) of a new strip mall are 2 feet by 9 feet and the actual strip mall is 200 feet by 900 feet.
Therefore, the scale factor from the blue prints to the actual mall will be:
= 200 / 2
= 100
Therefore, the scale factor from the blue prints to the actual mall is 1:100.
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need help with this
Answer:
1
Step-by-step explanation:
1 is the number in which its reciprocal is its own because 1 has both the same numerator and denominator which means the reciprocal is the same. For example, 1/1 is equal to 1 and the reciprocal of 1/1 is 1/1
2/2 is equal to 1 and the reciprocal of 2/2 is 2/2
This can keep going on and on.
Hope this helps!
Under her cell phone plan, Fatoumata pays a flat cost of $59 per month and $3 per
gigabyte. She wants to keep her bill under $75 per month. Which inequality can be
used to determine x, the maximum number of gigabytes Fatoumata can use while
staying within her budget?
Answer:
[tex]59 + 3x < 75[/tex]
Step-by-step explanation:
We know from the question that Fatoumata pays a flat cost of $59 per month and $3 per gigabyte.
If we consider [tex]x[/tex] to be the number of gigabytes she uses in a month, then her bill every month can be represented by the following expression:
[tex]59 + 3x[/tex] .
We are told that the bill has to be kept under $75. Therefore:
[tex]59 + 3x < 75[/tex]
This inequality can be used to solve for [tex]x[/tex], and so we can use it to find the maximum number of gigabytes she can use while keeping the bill under $75.
The inequality for the maximum number of gigabytes Fatoumata can use while staying within her budget will be equal to $59 + $3(x) < $75.
What is an equation?Mathematical expressions with two algebraic symbols on either side of the equal (=) sign are called equations.
This relationship is illustrated by the left and right expressions being equal to one another. The left-hand side equals the right-hand side is a basic, straightforward equation.
As per the given information in the question,
Price of cell phone plan per month = $59
The price per gigabyte = $3
Then, the equation as per the statement will be,
$59 + $3(x)
Here, x is the number of gigabytes used in a month.
So, the inequality will be,
$59 + $3(x) < $75
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sets you can form using only the elements in the set (5, 7, 9).
Answer:
va de 3 Ok qjwjqjwjwjsjsh
Step-by-step explanation:
wjwjwjwhwhwjjde
before leaving to visit Mexico, Levant traded 270 American dollars and received 3,000 Mexican pesos. when he returned from Mexico, he had 100 pesos left. How much will he receive when he exchanges these pesos for dollars?.
He will receive $ 9 when he exchanges 100 pesos for American dollars.
We are given that:
Levant received 3000 Mexican pesos for 270 American dollars.
So, by using the unitary method, we will calculate the rate of 1 Mexican pesos for American dollars.
So, we get that:
3000 Mexican pesos = $ 270
1 Mexican Peso = $ 270 / 3000
1 Mexican Peso = 0.09
Now, we are also given that Levan has 100 pesos left.
So,
100 pesos = $ 0.09 × 100
100 pesos = $ 9
Therefore, he will receive $ 9 when he exchanges 100 pesos for American dollars.
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Is this triangle below a right triangle? Show all necessary work to prove your answer
Answer:
yes it is a right triangle because it forms a right angle between the 6 cm and 7 cm.
Answer:
yes
Step-by-step explanation:
draw the symbol for the 90 degrees in the part between 6 and 7
Which sentence correctly compares the two numbers 24.204 and 24.240?
Answer:
24.204 < 24.240
Think:
24.204 = 24,204
24.240 = 24,240
Which is greater?
24,240 is.
⇒ Hope this helps!
5. If that same manufacturer miscalculates the demand of the market and manufactures 5,000 dozen of those sweaters, but only sells 3,000 dozen, what is the total profit from the sweaters? (Show your calculations.) $ profit.
If a manufacturer manufactures 5,000 dozen of sweaters, and sells 3,000 dozen of them only, then the total profit he/she earns from the these sweaters is [1000(3x - 5y)], assuming that the cost of manufacturing one sweater is "x" and the selling price of that sweater is "y".
As per the question statement, a manufacturer miscalculates the demand of the market and manufactures 5,000 sweaters, but sold only 3000 of them.
We are required to calculate the total profit earned by the manufacturer from the sale of the sweaters.
Since, no data about the manufacturing cost of the sweaters and their selling price is provided in the question statement, let us assume that the cost of manufacturing one sweater is "x" and the selling price of that sweater is "y". Solving with these variables will give us a generalized answer which we can use for any value.
Now, Since assumed that, manufacturing cost of one sweater is "x", then, manufacturing cost of 5000 sweaters will be [tex](5000*x)=5000x[/tex].
Similarly assumed that, selling cost of one sweater is "y", and then, selling cost of 3000 sweater will be [tex][(3000*y)=3000y][/tex].
Now, we know that,
[Profit = (Total Selling Cosy) - (Total Manufacturing Cost)],
Therefore, in this case, total profit from the sale of 3000 sweaters
[tex]=(3000y-5000x)\\=1000(3y-5x)[/tex].
Now, on using real integers or numbers in place of "x" and "y", if the value of Profit comes negative, it will mean, that for those values of "x" and "y", the manufacturer makes loss, not profit.
Profit: On sale of any goods, a person makes profit if he/she can sell the goods for a higher value than what they had bought for, or what they had manufactured at and is thus, calculated as the difference of total selling price of the goods and the manufacturing cost or buying price of them.Loss: This is the exact opposite of profit and is calculated as the difference of manufacturing cost or buying price of the goods and their selling price.To learn more about Profit and Loss, click on the link below.
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m∠2=30 find m∠4
Please help!
Step-by-step explanation:
the answer is, so we are adding and multiplying by 2, so here is the answer: m<4=60
Answer:
m∠2 and m∠4 are opposite angles, this means that they are the same. Since m∠2 is 30 degrees, m∠4 is also 30 degrees.
Start with the graph of the absolute value function. Stretch it by a factor of 3 and shift 2 units up.
The absolute value function of the given expression is g(x) = 3*Ix + 2I.
What is the role of absolute value?The absolute value function is often assumed to provide the number's distance from zero on a number line. Algebraically, the output is really the value without respect to sign regardless of what the input value is.
According to the given data:Let's define transformations in broad strokes.
A vertical stretch with scale factor A is denoted by:
g(x) = A*f(x)
A vertical shift in A units is denoted by:
g(x) = f(x) + A
If A is positive, the shift is positive; if A is negative, the shift is negative.
A horizontal shift in A units is denoted by:
g(x) = f(x - A)
If A is greater than zero, the shift is toward the right.
The shift to the left if A is negative.
Then we begin with the maximum value parental function f(x) = IxI.
"The graph of both the absolute value parent function has been stretched vertically by a factor of three."
we can start with:
g(x) = 3*f(x)
"then shifted two units left"
g(x) = 3*f(x - (-2))
and since f(x) = IxI, they have:
g(x) = 3*Ix + 2I
the absolute value function of the given expression is g(x) = 3*Ix + 2I.
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solve the equation
y + 8 = 3
y =
Answer
the answer to the question is -5
Step-by-step explanation:
Find the values of x and y.
PLEASE HELP ME I DONT GET THIS
help would be appreciated :)
Answer: Trust me if you want but I think it is parallelogram. Maybe?
Accounts Payable may sometimes include non-current or long-term payables in certain circumstances.
True
False
Accounts Payable may sometimes include non-current or long-term payables in certain circumstances is False
Non-current or long term liabilities are obligations to be paid after 12 months or a operational cycle. It is opposite of current liabilities, where the debts are short-term and its maturing is within twelve months.
Non-current liabilities arises when the company is using long term loans for the business requirements. Businesses may also require to finance the capital expenditure from time to time.
Accounts payable shows that the purchases that are unpaid by the organization . The accounts payable is the most important portion of the current liabilities of the company’s financial statements.
The business rules states that short term obligations shall be fulfilled out by current assets.
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The cost of a ticket to the circus is $14.00 for children and $38.00 for adults. On a certain day, attendance at the circus was 700 and the total gate revenue was $19,400. How many children and how many adults bought tickets?
Answer:
300 children and 400 adults
Step-by-step explanation:
14(x) + 38(700-x) = 19,400
14x + 26,600 - 38x = 19,400
14x - 38x = -7,200
-24x = -7,200
24x = 7,200
x = 300
x = childrens
700 - x = adults
300 = children
400 = adult
Determine the sum of the first n terms of the geometric sequence for the values of a, and r.
n = 4, a₁ = -3, r = 3
Step-by-step explanation:
gsvsvhsjjsbsbheeb dbdjdbdurjr rjrnir
On the last three physics exams a student scored 85, 87, and 91. What score must the student earn on the next exam to have an average of at
Least 90?
If you want to have an average of at least 90, the score that you need to get in the last exam is at least 97 points.
What score must the student earn on the next exam to have an average of at least 90?
We know that the scores on the first 3 exams are 85, 87, and 91.
If the score in the fourth exam is x, then the average of the 4 exams will be:
(85 + 87 + 91 + x)/4
If we want to have an average of at least 90, then we need to solve:
(85 + 87 + 91 + x)/4 = 90
Solving that for x we will get:
(263 + x) = 90*4
x = 90*4 - 263 = 97
The score that you need to get in the last exam is 97 points.
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650 ft.² divided by 2/3 of an hour
The value of 650 ft.² divided by 2/3 of an hour is 975 ft² per hour
How to evaluate the quotient?The mathematical statement is given as
650 ft.² divided by 2/3 of an hour
This can be represented properly as:
650 ft.² / 2/3 of an hour
2/3 of an hour is
2/3 of an hour = 2/3 hr
So, we have
650 ft.² / 2/3 of an hour = 650 ft.² / (2/3 hr)
Evaluate the quotient
650 ft.² / 2/3 of an hour = 975 ft² per hour
Hence, the value of 650 ft.² divided by 2/3 of an hour is 975 ft² per hour
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the expression sinx + cotx cosx can be simplified to what
after simplifying the expression sinx + cotx cosx, we get the result as cosec x.
We are given the expression:
sinx + cotx cosx
We need to simplify the expression.
We know that cot x can also be written as
cot x = cos x / sin x
Substituting it in the expression, we get that:
= sin x + ( cos x / sin x ) cos x
opening the brackets, we get that:
= sin x + cos² x / sin x
= (sin² x + cos² x ) / sin x
Using the trigonometric identity that sin² x + cos² x = 1, we get that:
= 1 / sin x
= cosec x
Therefore after simplifying the expression sinx + cotx cosx, we get the result as cosec x.
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=* When the stock market fell, Hayes lost 18% of the value of his stocks. The
stock was worth $2,486.95 before the loss. What was the stock worth after
?the loss
Answer:
Approximately $2,039.30
Step-by-step explanation:
Original value = $2,486.95
Value lost = 18%
100% value = $2,486.95
100% - 18% = 82% value remaining
.82 x 2,486.95 = 2039.299 or $2,039.30
what is
3x+2(4x-4)=3
Answer:
x = 1
Step-by-step explanation:
Distribute
3x + 8x - 8 = 3
Gather like terms
11x - 8 = 3
Add 8 to both sides
11x = 11
Divide both sides by 11
x = 1
A dish containing bacteria has a diameter of 0.0001 kilometer. The diameter of a bacterium is 10^-16 How many times larger is the diameter of the dish than the diameter of the bacterium
For a dish that is containing bacteria has a diameter of 0.0001 kilometer. The diameter of a bacterium is 10^-16, the number of times that the diameter would be larger is 10¹² times.
How to solve for the diameterWe have the diameter of the dish to be 0.0001
This is the same as 10⁻⁴
The bacterium has the diameter at 10^-16
The difference between the diameter of the dish than the bacterium would be solved by
1 x 10⁻⁴ / 10^-16
= 10¹²
Hence we would have to say that for a dish that is containing bacteria has a diameter of 0.0001 kilometer. The diameter of a bacterium is 10^-16, the number of times that the diameter would be larger is 10¹² times.
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A bouquet has 6 roses and 21 other types of flowers. What is the ratio of roses to other flowers?
Answer:
6:21
Step-by-step explanation:
because there is 6 roses and 21 other types 6/21 = 6:21
Answer:
6:21
ratio indicates how many times one number contains another.
it can be simplified to 2:7, because the HCF of 6 and 21 is 3, it's been divided by 3.
hope it helps.
Answer if you know your right, bur don't answer just for the points
Answer:
42% is less than 5/8
Step-by-step explanation:
If 42% is converted to a fraction, it comes out to 21/50, which is smaller than 5/8. You could also convert 5/8 into a percentage, which comes out to 62.5%. :)
Answer:
42% < 5/8
Step-by-step explanation:
We're going to change 5/8 to a percent. All you have to do is 5/8, which is 0.625. If you want to convert a decimal to a fraction, you move the decimal 2 places to the right, which is 62.5. Therefore, 42% is less, or < than 5/8.