The variable expression Nemo could have written either "7x" or "x * 7" to represent "the product of a number and 7."
We have,
Nemo could have written the following two correct variable expressions to represent the phrase "the product of a number and 7":
= 7x
In both expressions, "x" represents the unknown number, and the product of "x" and 7 is obtained by either multiplying "x" by 7 (7x) or by multiplying 7 by "x" (x * 7).
Both expressions are equivalent and correctly represent "the product of a number and 7."
Thus,
The variable expression Nemo could have written either "7x" or "x * 7" to represent "the product of a number and 7."
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The thickness of the mats used in the rings, parallel bars, and vault events should be 8.25 inches, give or take 0.75 inches. Write an absolute value inequality describing the range of acceptable mat thickness
Answer:
1x-7.875 *is les than symbol* 0.375
Step-by-step explanation:
Bruce wants to make 50 ml of an alcohol solution with a 12% concentration. He has a 10% alcohol solution and a 15% alcohol solution. The equation 0.10x + 0.15(50 – x) = 0.12(50) can be used to find the amount of 10% alcohol solution Bruce should use.
The amount of 10% alcohol solution in 50 ml alcohol solution is 30ml and amount 15% alcohol solution is 20ml.
In the given question
Bruce wants to make 50ml solution with 12 % concentration.
and he has 10% and 15% alcohol solution for that .
Let the amount of 10% alcohol solution = x
Let the amount of 15% alcohol solution = y
Given that x+y=50 ...(i)
According to the question the equation to find the 10% solution will be
0.10x + 0.15(50 – x) = 0.12(50)
Solving further we get
0.10x + 7.5 - 0.15x = 6
-0.05x + 7.5 = 6
-0.05x = 6 - 7.5
-0.05x = -1.5
x = -1.5/-0.05
x=30
So , 10% solution is 30 ml
Substituting the value of x=30 in equation (i) we get
30 + y = 50
y = 20
So , 15% solution is 20 ml
Therefore , the amount of 10% alcohol solution in 50 ml solution is 30ml and amount 15% alcohol solution is 20ml.
The given question is incomplete , the complete question is
Bruce wants to make 50 ml of an alcohol solution with a 12% concentration. He has a 10% alcohol solution and a 15% alcohol solution. The equation 0.10x + 0.15(50 – x) = 0.12(50) can be used to find the amount of 10% alcohol solution Bruce should use.
How much of the 10% alcohol solution should Bruce use?
How much of the 15% alcohol solution should Bruce use?
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HEEELLLLPPP!!!! PLZZZZ!!!! THANK U!!!
(5 screenshots included)
compare 5_5.4 by choosing <,>,or =
Answer: five is < than 5.4
help me under stand this please
Step-by-step explanation:
-and -are + and + and - are -
u can do it
One winter day, the outside temperature, y, never dropped below −1°. The inside of a car was always warmer than the temperature outside by at least 4°. Which graph of a system of inequalities represents this scenario?
On a coordinate plane, 2 straight lines are shown. The first solid line is horizontal to the y-axis at y = negative 1. Everything above the line is shaded. The second dashed line has a positive slope and goes through (0, negative 4) and (2, negative 2). Everything below and to the right of the line is shaded.
On a coordinate plane, 2 straight lines are shown. The first solid line is horizontal to the y-axis at y = negative 1. Everything below the line is shaded. The second dashed line has a positive slope and goes through (0, negative 4) and (2, negative 2). Everything above and to the left of the line is shaded.
On a coordinate plane, 2 straight lines are shown. The first solid line is horizontal to the y-axis at y = negative 1. Everything above the line is shaded. The second solid line has a positive slope and goes through (0, negative 4) and (4, 0). Everything below and to the right of the line is shaded.
On a coordinate plane, 2 straight lines are shown. The first solid line is horizontal to the y-axis at y = negative 1. Everything below the line is shaded. The second solid line has a positive slope and goes through (0, negative 4) and (4, 0). Everything above and to the left of the line is shaded.
The graph of a system of inequalities that represents this scenario will be A. On a coordinate plane, 2 straight lines are shown. The first solid line is horizontal to the y-axis at y = negative 1. Everything above the line is shaded. The second dashed line has a positive slope and goes through (0, negative 4) and (2, negative 2). Everything below and to the right of the line is shaded.
What is a inequality?In Algebra, an inequality is a mathematical statement that uses the inequality symbol to illustrate the relationship between two expressions.
On one day, x, the outside temperature never fell below 1°. A automobile was always at least 4 degrees warmer inside than it was outdoors.
y -1 is the inequality for the first line.
Y > x + 4 is the inequality that represents the second line.
The darkened area is therefore above the first line, which is a solid horizontal line.
The shaded area lies above and to the left of the second line, which has a broken line and a positive slope.
Therefore, the correct option is A.
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Steven and Brittney are both starting lawn mowing businesses to save money to buy a dog. Steven charges $20 a yard and $6 an hour. Brittney charges $28 a yard and $5 an hour. How many hours will they need to work to have the same amount of money. If the cost of the dog is $300, who will be able to buy it first?
a. 8hrs to have the same amount of money
b.18 hours to have the same amount of money
c. Brittany will be able to buy the dog first
d. Steven will be able to buy the dog first
Answer:
d
Step-by-step explanation:
18 always still have the same amount of money
Determine whether each number is
rational or irrational.
-π
mlla
3
50
0.4
Rational Irrational
O
O
O
O
Jenny was doing laundry. She folded 10
towels and divided them evenly into p
piles. Which expression represents the
number of towels in each pile?
The record for the most rolls of wrapping paper sold for the school fundraiser is 593. Let w be the number of rolls of wrapping paper sold. Tell if the equation or inequality represents a number that would beat the school record.
Answer:
w ≤ 593
Step-by-step explanation:
Missing option;
w ≥ 593
w > 593
w ≤ 593
593 < w
Explanation:
w ≥ 593 No
Number of wrapping paper sold never be more than 593.
w > 593 no
Number of wrapping paper sold never be more than 593.
w ≤ 593 yes
Number of wrapping paper sold will be equal or less than 593.
BRAINLIEST HELP
When Alice returns from America, she has $90 left. If she changes this back to pounds
how many pounds will she get?
Give your answer to 2 decimal places.
Exchange rate= 1 GBP= 1.5 USD
Answer:
£60
Please vote for Brainliest and I hope this helps!
Select the correct answer. Which function has a domain of all real numbers? A.y=(x+2)^ 1/4 B.y=-x^ 1/2+5 C.y=-2(3x)^1/6 D.y=(2x)^1/3-7
The option D shows a function has a domain of all real numbers.
Which is the Domain of a Function?
The domain of a function is the set of input values for which the function is real and defined. In the other words, when you define the domain, you are indicating for which values x the function is real and defined.
Letter A - [tex]y=\left(x+2\right)^{^{\frac{1}{4}}\:}[/tex], as you have an even exponent, the results for y should be greater or equal than zero. Thus,[tex]\left(x+2\right)^{^{\frac{1}{4}}\:}=\sqrt[4]{x+2}[/tex]
Therefore, the function domain is x [tex]\geq[/tex]-2.
Letter B - [tex]y=-x^{\frac{1}{2}}^{\:}+5[/tex], as you have an even exponent, the results for y should be greater or equal than zero. Thus,[tex]-x^{\frac{1}{2}}^{\:}+5=-\sqrt{x} +5[/tex]
x [tex]\geq[/tex] 0
Therefore, the function domain is x [tex]\geq[/tex] 0.
Letter C - [tex]y=-2\left(3x\right)^{\frac{1}{6}}[/tex], as you have an even exponent, the results for y should be greater or equal than zero. Thus,[tex]-2\left(3x\right)^{\frac{1}{6}}=-2*\sqrt[6]{3x}[/tex]
3x [tex]\geq[/tex] 0
x [tex]\geq[/tex] 0
Therefore, the function domain is x [tex]\geq[/tex] 0.
Letter D - [tex]y=\left(2x\right)^{\frac{1}{3}}-7[/tex], as you have an odd exponent, the results for y has no undefined points nor domain constraints. Thus,[tex]\left(2x\right)^{\frac{1}{3}}-7=y=\sqrt[3]{2x} -7\\ \\[/tex]
Therefore, the function domain is [tex]-\infty \: < x < \infty \:[/tex].
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Which of the following expressions represents the distance from -11 to 0 on a number line?
|-11|
0 - 11
11 × 0
11 - 11
Answer:
I-11I
Step-by-step explanation:
To find the distance between two numbers, find the absolute value of each number and add them together.
I-11I = 11
I0I = 0
11 + 0 = 11
Answer:
Hope this helps!
Step-by-step explanation:
The answer is 11. To find the distance between two numbers, find the absolute value of each number and add them together.
What percentage of take-home pay is spent on housing, property tax, and insurance? (round to the nearest whole percent)
31%
45%
47%
57%
Answer:
31%
Step-by-step explanation:Ive got no idea why, I just know the answer lol.
1 and 2 pls I will give brainiest if right
Answer:
1.b
2.d
Step-by-step explanation:
i think
A teacher asked students to classify numbers A and B below
A: 0.28316049...
B:28
Which statement describes the correct classification(s) of the numbers?
Both numbers are real numbers
Both numbers are rational, irrational, and real numbers
Number A is an irrational number, and number B is a rational number
O Number A is irrational, and number B is rational
Answer:
a or b I think it's correct
Step-by-step explanation:
hahahahahaha
which of the following lines is parallel to x = 8?
3y=16
x = 7
x =y
y = 8
Answer:
The only line there that is parallel to x = 8 is x = 7.
Karen performs a transformation on parallelogram ABCD that is plotted on a coordinate grid to form parallelogram A'B'C'D'. The image of
each point is shown in the table below.
Image
Original
Point
| A(-4,-1)
B (-7,-6)
C (-14, -6)
D(-11, -1)
(1.-4)
(6.-7)
(6.-14)
(1.-11)
Which best describes the transformation Karen performed?
A.reflection over the y-axis
B.dilation of scale factor
-1/4
C.counterclockwise rotation of 90 degrees about origin
D.translation of 5 units to the right and 3 units down
Answer:
its c
Step-by-step explanation:
took the test
Karen performed a transformation of (C) counterclockwise rotation of 90 degrees about origin
Transformation is the movement of a point from its initial location to a new location. Types of transformation are rotation, reflection, translation and dilation.
If a point A(x, y) is rotated 90° counterclockwise about the origin, the new point is at A'(-y, x).
Parallelogram ABCD has vertices at A(-4,-1) , B (-7,-6) , C (-14, -6) , D(-11, -1), if it is rotated 90° counterclockwise about the origin, the new point would be at A'(1.-4) , B'(6.-7), C'(6.-14) , D'(1.-11)
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A produce store offers red and green apples. In one morning they sold 52 apples total .If 20 of the apples they sold were red , what is the ratio of green apples sold to red apples sold?
If the store sold 52 apples total and 20 of the apples they sold were red, then the ratio of green apples sold to red apples sold is 8:5
Given,
The total number of apples sold in the morning= 52 apples
Number of red apples sold = 20 apples
Number of green apples sold = Total number of apples sold - Number or red apples sold
Then,
Number of green apples sold = 52-20=32
The ratio of green apples sold to red apples sold = 32:20
We have find the simplest form
[tex]32:20= \frac{32}{20}[/tex]
Then, divide both numerator and denominator by 4
[tex]\frac{32}{20}=\frac{8}{5}[/tex]
The ratio = 8:5
Hence, if the store sold 52 apples total and 20 of the apples they sold were red, then the ratio of green apples sold to red apples sold is 8:5
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What is the equation of this line?
y= 4x
y= 1/4x
y = -4x
y=-1/4x
trieste dove to a record depth of 37,800 feet. the record set previously on january 7th of the same year was 13800 feet less than the dive on january 23rd. what was the record set on january 7th in relation to the sea level
The record set on January 7th in relation to the sea level is calculated as [tex]24,000[/tex] feet.
Non-real numbers are what?The term "not real" or "non-real" refers to imaginary and unreal numbers. The number line cannot display non-real numbers. A "actual" and practical idea, infinity. Infinity, on the other hand, is not a number on the real number line since it is not a part of the mathematically defined set of "real numbers." When measuring continuously fluctuating quantities like size and time, real numbers are utilized.
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When one thing is ten times as large as another, it is said to be an order of magnitude larger. A hundred times larger is two orders of magnitude. A thousand is three orders of magnitude. By how many orders of magnitude is the empire state building taller than a chair seat? enter an integer.
The empire state building is taller than a chair seat by three orders of magnitude.
What are orders of magnitude?Orders of magnitude refer to the classification based on the sizes of two objects against each other.
Orders of magnitude range in the power of 10 or 10ⁿ.
Data and Calculations:Orders of Magnitude:
10x = 1 order of magnitude
100x = 2nd order of magnitude
1000x = 3rd order of magnitude
Empire State Building = 1,500 feet
Chair seat = 1.5 feet
Order of magnitude = 1,000x (1,500/1.5)
Thus, the Empire State Building is about a thousand times taller than a chair seat or three orders of magnitude.
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Sanic ran 420 meters in 21 seconds what was his speed?
Yes this is a real question please help
Answer:
the speed is 20 m/s
Step-by-step explanation:
The computation of the speed is as follows
As we know that
Speed = Distance ÷ time
where,
Distance is 420 meters
And, the time is 21 seconds
So, the speed is
= 420 ÷ 21
= 20 m/s
hence, the speed is 20 m/s
We simply applied the above formula so that the correct value could come
And, the same is to be considered
Which equation describes the line that contains (1,5) and has a slope of 2?
A. y= 2x - 3
B. y = 2x - 9
C. y = 2x + 9
D. y = 2x + 3
Answer:
D. y = 2x + 3
Step-by-step explanation:
[tex]y - 5 = 2(x - 1) \\ \\ y - 5 = 2x - 2 \\ \\ y = 2x - 2 + 5 \\ \\ y = 2x + 3[/tex]
Which phrase should be inserted on the line to correctly compare the two fractions? Use the models to help.
Four-fifths blank line StartFraction 16 Over 20 EndFraction
Four-fifths
A model has 4 shaded parts and 1 unshaded part.
StartFraction 16 Over 20 EndFraction
A model has 16 shaded parts and 4 unshaded parts.
1. is greater than
2. cannot be compared to
3. is less than
4. is equal to
Answer:
it is equal to it
Step-by-step explanation:
4 times four is sixteen four times five means that it if four fifths
Answer:
4
Step-by-step explanation:
Did it on edgeunity! Gl
Can you help me thank you :)
Answer:
16
Step-by-step explanation:
[tex]\sqrt{121}[/tex] + [tex]\sqrt[3]{125}[/tex]
= 11 + 5
= 16
Which equation described a line parallel to the line that connects points (-8 ,9) and (3, -4)?
Answer:
y = (-13/11)x - 5/11
Step-by-step explanation:
Where's the list of equations from which you're to choose?
The line that connects points (-8 ,9) and (3, -4) has the following slope:
9 - (-4)
m = ----------------- = -13/11
-8 - 3
Then the new line with this slope is y = (-13/11)x + c
and because (-8, 9) satisfies this equation, 9 = (-13/11)(-8) + c, and we need to calculate c from this. 9 = 104/11 + c, or
-c = 104/11 - 99/11, or - 5/11
Then the desired equation is y = (-13/11)x - 5/11
across which axis was point A reflected
Answer:
When point A with coordinates (0, -1) is reflected across the x-axis and mapped onto point A', the coordinates of A' will be (0, 1).
i.e A'(0, 1) is the image of point A after a reflection.
Hence, point A is reflected across the x-axis.
Step-by-step explanation:
When we reflect a point A across the x-axis, the value of 'y' gets negated, but the value of 'x' remains unchanged.
In other words, when point P with coordinates (x, y) is reflected across the x-axis and mapped onto point P', the coordinates of P' will be (x, -y).
Thus, the rule is:
P(x, y) → P'(x, -y)
Thus, when point A with coordinates (0, -1) is reflected across the x-axis and mapped onto point A', the coordinates of A' will be (0, 1).
i.e A'(0, 1) is the image of point A after a reflection.
Hence, point A is reflected across the x-axis.
OKAY, PEOPLE BIG NEWS AS I HAVE ALREADY MADE CLEAR I GOT EXAMS NEXT WEEK!!! I JUST GOT THE UPDATE AND ON MY MATH EXAM AND ITS 31 QUESTIONS FREAKING HARD AND ON THE ENGLISH 45 FREAKIN HARD QUESTIONS!!!! I DONT KNOW THE SPECIFICS ON THE BIOLOGY BUT I KNOW ITS GONNA BE BIG AND HARD!!!! I AM FAILING I REALLLLYYY NEED THISSS PASS RIGHT HERE SO, PEOPLE HERES HOW ITS GONNA GO: WHEN I POST A QUESTION I WILL NEED A CORRECT AND RIGHT ANWSER QUICKLY! I WILL NEED HELP PLEASEEEEEEEEEEEE!!!!!!!!!!!!!!!!!!!!!!!!.
I JUST WANNA PUT THAT OUT THERE FOR HEADS UP
Answer: wow thats a lot of questions
Step-by-step explanation:
Answer:
I'll try to do my best man, with all of my warnings
Step-by-step explanation:
Which expression is the result of factoring the expression below by taking out its greatest common factor?
Answer:
A)3(2x²-x+4)
Step-by-step explanation: