The correct option is B) Collect variables terms on one side because there is one value for the variable.
What is defined as the variables?In the perspective of a math concept or experiment, a variable is a quantity that really can change. A variable is typically represented by a single letter. Variables are commonly represented by the alphabets x, y, and z. We will sometimes select a letter which further tells us of the quantity this represents, including such t for time, v voltage, and any b for bacteria.The given equation in this case is,
18 = 2(4+x)
By using the Distributive property on the right side,
18 = 8 + 2x
After subtracting 8 from both sides ( Isolating variable x )
18 - 8 = 8 + 2x - 8
Compile similar terms,
10 = 2x
By dividing both sides by two ( Isolating variable x )
x = 5
As a result of the preceding explanation, it is completely obvious that we utilized all options but apart from option B.
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The complete question is-
Which would not be a step in solving 18=2(4+x)?
A) Use the distributive property.
B) Collect variables terms on one side.
C) Collect like terms.
D) Isolate the variable.
Select the correct answer.
What is the y-intercept of f(x) = 3x+2?
O A.
(9,0)
O B.
(0,9)
O C.
(0,-9)
O D. (9,-9)
Answer:
y = 2
Please go through my explanation.
Step-by-step explanation:
If y = 3x + 2
then y intercept is the value of y when x = 0
At x = 0
y = 3 x 0 + 2
y = 0 + 2
y = 2
I have attached a graph to prove this
Note
It does not fit any of the answer choices. Maybe the answer choices are incorrect or the equation is incorrect.
The y intercept from the answer choices should be either (0, 9) or (0, -9) since x has to be 0 to get the y intercept
If y-intercept is to be 9, the equation should be y = 3x + 9
If y-intercept is to be -9, the equation should be y = 3x -9
You may wish to explain to the teacher about this if you are absolutely sure that the equation and answer choices are correct
Hope that helps in some small way
A point on the y-axis known as an intercept is where the line's slope passes. It is a place on the y-axis where a straight line or a curve crosses.
A line's slope and intercept give information on its steepness and the point at which it crosses an axis, respectively.
We have,
f(x) = 3x + 2
To find the y intercept put x= 0 we get
y = 3x +2
y= 3(0)+ 2
y= 0+ 2
y= 2
Thus, the y intercept is (0, 2).
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Suppose you make hot chocolate. It's too hot to drink, so you put it in the freezer to cool it off. If the original temperature is 190 degrees Fahrenheit and the freezer is 0 degrees Fahrenheit, what will the temperature of the hot chocolate be after 4 minutes? (k = 0.12)
307.05
272.33
132.56
117.57
If the original temperature is 190 degrees Fahrenheit and the freezer is 0 degrees Fahrenheit the temperature of the hot chocolate be after 4 minutes is: 117.57.
Temperature of the hot chocolateGiven:
k=0.12
Original or initial temperature=190 degrees Fahrenheit
Freezer temperature = 0 degrees Fahrenheit
Using Newton's Law of cooling to find the temperature of the hot chocolate
Temperature (t)= Temperature of surrounding environment T1 +(initial temperature of object T0-Temperature of surrounding environment T1)e-^kt
Hence,
T(t)=0+(190-0)e^-0.12t
T(t)=190e^-0.12t
Where t=4
T(t)=190e^-0.12(4)
T(t)=190e^-0.48
T(t)=117.5688
T(t)=117.57 (Approximately)
Therefore if the original temperature is 190 degrees Fahrenheit and the freezer is 0 degrees Fahrenheit the temperature of the hot chocolate be after 4 minutes is: 117.57.
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1. A restaurant has three pieces of apple pie, five pieces
of cherry pie, and four pieces of pumpkin pie in its
dessert case. How many ways are there to arrange the
pies in a line? (note every pie is a unique work of art).
there are a total of 7983360 way of arrangements of the pies.
As we are provided we three pieces of apple pie, five pieces of cherry pie, and four pieces of pumpkin pie, in total 12 pies
So total combination will be
12! = 1*2*3*4*5*6*7*8*9*10*11*12
= 479001600
In the event that there was 1 pie, at that point it would be fair 1 in its line. If we had 2 pies A and B, at that point we have 2 combinations AB and BA. Adding a 3rd pie C would multiply those combinations by 3, ABC, ACB, BAC, BCA, CAB, and CBA. If each pie piece may be a unique work of craftsmanship at that point 12! is the proper amount of combinations. On the off chance that you need combinations that disregard setups where for illustration two cherry pie pieces are compatible, meaning you want uniqueness at that point you divide 12! by 5 at that point by 3 and after that by 4.
Usually 12! / (5*3*4) = 7983360 exceptionally interesting combinations.
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Suppose that the width of a certain rectangle is 1 inch more than one-fourth of its length. The perimeter of the rectangle is 52 inches. Find the
length
width
The length of the rectangle is 82.4 inches and the width of the rectangle is 21.6 inches.
Let the length of the rectangle be x inches.
So, the width of the rectangle will be:
Width = 1 / 4 x + 1 inches.
Now, the perimeter = 52 inches.
Now, the formula for the perimeter is:
P = 2 (l + b)
Substituting the values in the formula, we get that:
52 = 2 ( x + 1 / 4 x + 1)
104 = 5 / 4 x + 1
103 = 5 / 4 x
x = 103 × 4 / 5
x = 82.4 inches.
Length = 82.4 inches
Width = 1 / 4 x + 1 = 21.6 inches.
Therefore, we get that, the length of the rectangle is 82.4 inches and the width of the rectangle is 21.6 inches.
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Suppose that between the ages of 22 and 40, you contribute $3000 per year to a 401(k) and your employer contributes $1500 per year on your behalf. The interest rate is 8.3% compounded annually. What is the value of the 401(k) rounded to the nearest dollar after 18 years? b) Suppose that after 18 years of working for this firm, you move on to a new job. However, you keep your accumulated retirement funds in the 401(k). How much money to the nearest dollar, will you have in the plan when you reach 65? c) What is the difference between the amount of money you will have accumulated in the 401(k) and the amount you contributed to the plan?
The amount of money accumulated after 18 years at compound interest is $192429.71 . At 65 there will be $1412484.01 in the account.
Compound interest, also known as interest on principal and interest, is the practice of adding interest to the principal amount of a loan or deposit.
The compounding interest formula when there are annual contributions is:
[tex]A=P(1 + r)^Y + c[ ((1 + r)^Y - 1) / r ][/tex]
Where P is the principal amount which is 4500,
r is 8.3% = 0.083
Y is the number of years which is 18 .
and C is the annual contributions which is equal to P
Therefore:
[tex]A=4500(1 + 0.083)^{18} + 4500[ ((1 + 0.083)^{18} - 1) / 0.083 ]\\\\A=192429.71[/tex]
Hence the amount of money in the account is $192429.71
Now the principal is $192429.71 and the rate is 0.083 , now it is a compound interest and time is 65 - 40 = 25 years.
[tex]A = P(1+0.083)^{25}[/tex]
[tex]A = 192429.71(1+0.083)^{25}\\\\A= 1412484.01[/tex]
Hence the total money accumulated is $1412484.01
c) Total money put in the account = 3000 × 18 = 54000
Difference = $1412484.01 - $ 54000 = $ 1358484.01
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How to write three hundred eight and sixty thousandths in decimal number
Answer: 308.0006
Step-by-step explanation:
During a giveaway, every fourth customer gets a coupon and every tenth customer gets a free item. If 60 customers participate, how many get both the coupon and free item? A. 2 people B. 10 people C. 20 people D. 3 people
In the diagram below, m/CAD = 47°, m/CAB = 77° and
m/ADB = 105°. Find m/B.
Step
1
2
3
try
Angle
m/CAD = 47°
m/CAB = 77°
(hover here to see on figure)
m/ADB = 105°
m/
B
O
Select a Reason
105°
Reason
Given
Given
Given
C
47°
A
(
4) m∠BAD=30° (angle subtraction postulate)
5) m∠B=45° (sum of angles in a triangle)
Income Tax Expenses (at 25%= 4,375 and if income tax expense had been23% what would the net income have been
Based on the calculation below, the net income would have been 13,475 if income tax expense had been 23%.
How do we calculate net income?The net income when the tax rate is 23% can be calculated as follows:
Income before tax = Income tax expenses at 25% tax rate / Tax tax rate = 4,375 / 25% = 17,500
Net income at 23% tax rate = Income before tax * (100% - Tax rate of 23%)
Net income at 23% tax rate = 17,500 * (100% - 23%)
Net income at 23% tax rate = 17,500 * 77%
Net income at 23% tax rate = 13,475
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Which fraction is equivalent to 3/7?
Answer:
6/14,9/21
Step-by-step explanation:
those two are equavalent to 3/7
please help
please hurry
The area of a triangle is 75 square units with a scale factor of 1 to 4 Find the area of the preimage preimage
The area of the pre-image is 300 square units
Area of triangleA triangle is a 2D shape that has a 3 sides and angles. The formula for calculating the area is expressed as;
Area= 1/2 * bh
where
b is the base of the triangle
h is the height of the triangle
Given the following parameters
Area of triangle = 75 square inches
If the area is increased with with a scale factor of 1 to 4, then
Area of pre-image = 4 * 75
Area of pre-image = 300 square units
Hence the area of the pre-image is 300 square units
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Which expression has the greatest value?
O 24+ 16 ÷ 4
O (24+16) ÷ 4
O 24 ÷ 4+2
O 24 ÷ (4+2) PLS HELP
Answer:
24 +16÷4=00
(24+16)÷4=00
24÷(4+2)=42
(y + 2)² when y=-7, z = 19
Answer:
Step-by-step explanation:
if y=-7 you can plug it in the equation[tex]=(-7+2)^{2} \\=(-5)^{2} \\=25[/tex]!! NEED HELP ASAP !! 35 POINTS!! Which shapes are similar to shape A?
The shapes which are similar to shape A are the shape in pink color, the shape in blue color inside the square and the shape in voilet color inside the square.
From the given figure, we can find the similar shapes
From shape A to shape in pink color, the translation is rotation about the origin at 90° counterclockwise.
From shape A to shape the shape in blue color inside the square, the translation is diminishment with the scale factor 0.5 and opposite rotation about an origin 90° clockwise.
From shape A to the shape in voilet color inside the square, the translation is enlargement with the scale factor 1.5 and opposite.
What is a scale factor?Shapes in various dimensions are scaled using the scale factor. In geometry, we study a variety of two- and three-dimensional geometrical shapes. A measurement for similar figures that appear the same but have distinct scales or measures is the scale factor.
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Megan wants to purchase 2
1/2
pounds of chocolate pretzels for lunch this week. If each pound cost $3.48, how much will she
spend on pretzels?
PLEASE WORK OUT ANSWER
Answer: $8.70
Step-by-step explanation: $3.48 x 2 for the 2 pounds. You divide 3.48/2 to get the half pound. 3.48 x 2 = 6.96. 3.48/2=1.74. 1.74 + 6.96 = $8.70
Answer:
Step-by-step explanation:
$3.48 x 2 for the 2 pounds. You divide 3.48/2 to get the half pound. 3.48 x 2 = 6.96. 3.48/2=1.74. 1.74 + 6.96 = $8.70
Why is there one decimal in 0.25x0.4
Answer:
this is since the decimal point moves
Step-by-step explanation:
forget about the decimal point for right now
025
04
-------
0
8
20
0
0
0
+
-----
100
now there are 3 numbers behind the decimal points (2,5,and 4) so put the decimal point where 3 numbers are behind it.
.100 or .1
HELP ILL MARK AS BRAINliEST
Answer: it's A.12 \ 3 =4 if worrg do D.16\4=4 i hop this help's you
i did this one long time ago it was ether one so ya i forgotten it sorry
x:4|x-3|-6<10. what is the missing number
Answer: -1<x<7
Step-by-step explanation:
4|x-3|-6<10
4|x-3|-6+6<10+6
4|x-3|<16
4|x-3|/4<16/4
|x-3|<4
x-3<4
x<7
x-3>-4
x>-1
-1<x<7
For which value of x is line l parallel to line m?
X=
The value of x should be 20 for the line l to be parallel to the line m
What are parallel lines?Parallel lines are those lines that are equidistant from each other and never meet.
Parallel lines cut by a transversal, forms different angle relationship like alternate angles, corresponding angles, etc.
Therefore, for the line l to be parallel to the line m, the angles formed are corresponding angles.
Corresponding angles are equal.
Therefore,
3x - 20 = 2x + 10
3x - 2x = 10 + 20
x = 20
Therefore, the value of x should be 20 for the line l to be parallel to the line m.
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4. The top rung of a ladder is 18 inches long. The lengths of the rungs increase one-half inch uniformly from the top to the bottom. What is the length of the tenth rung from the top?
The top rung of a ladder is 18 inches long, lengths of the rungs increase one-half inch uniformly from the top to the bottom. The length of the ladder after 10th rung from the top is 33inches.
What is the function of a ladder and their uses?A ladder is a piece of gear used for climbing up or down objects that consists of repeating bars or steps (rungs) between two upright lengths of metal, wood, or rope.
In the industry, step ladders are most frequently used. This ladder is unique since it may be used in any location. This is due to the fact that it may be utilized without needing to lean against any kind of support because it is self-supportable. This ladder can therefore be used in the middle of a room or in other places without support.
Step ladders are incredibly practical to have throughout the house, particularly in the kitchen. Simply said, this ladder is a miniature ladder that you can use to access higher objects. When purchasing this ladder, storage space is not a concern because step stools are made to fold up.
Given,
Top rung =18 inches
Length increases = 1.5inches
Therefore, after 10th rung length= (1.5*10)+18 inches= 33 inches
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find the volume of cylinder with radius 15mm and height 63mm
The diameter of Jupiter at its equator is approximately 1.43 x 10 to the 5th power kilometers. Write this number in standard notation. An astronomer's infrared telescope is able to detect radiation with a wavelength of 0.000439 meters. Write this number in scientific notation.
The conversions to standard and scientific notation will result into-
D (Jupiter) = 143000 Km
λ (Wavelength) = 4.39 x [tex]10^{-4}[/tex] meters.
We have diameter of Jupiter and radiation of a wavelength.
We have to write them in standard notation and scientific notation.
What is Scientific Notation ?Scientific notation is a way of writing very large or very small numbers in the powers of 10.
According to the question -
D = 1.43 x [tex]10^{5}[/tex] Km
In standard notation -
D = 143000 Km
and
λ = 0.000439
In scientific notation -
λ = 4.39 x [tex]10^{-4}[/tex] meters
Hence, the conversions to standard and scientific notation will result into-
D (Jupiter) = 143000 Km
λ (Wavelength) = 4.39 x [tex]10^{-4}[/tex] meters
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Write as a Rate.
2 teachers for every 19 students
Anna and Connor are in different math classes in NYC. Anna's teacher is always giving exams with 30 questions on them, while Connor's teacher gives more frequent exams with 24 questions on them. Anna's teacher also gives 3 projects. Even though two classes take different number of exams, the teachers told them the they will have the same total number of exam questions this year. What is the minimum amount of exam questions Anna and Connor will expect this year?
Triangle BCD has the following side lengths: BC = 60, CD = 50
Triangle RST has the following side lengths: RS = 11x-4, ST = 70
What is the value of x?
What is the length of the side RS
Answer:
c.x=9sr=95
THATS THE ANSWER PO.
The value of the variable x will be 88. Then the length of the side RS will be 84.
What is the triangle?A triangle is a three-sided polygon with three angles. The angles of the triangle add up to 180 degrees.
If two triangles are similar, then the ratio of the corresponding sides will remain constant.
Triangle BCD has the following side lengths: BC = 60, CD = 50.
Triangle RST has the following side lengths: RS = 11x-4, ST = 70.
The triangle BCD and RST are similar triangles. Then we have
RS / ST = BC / CD
11x - 4 / 70 = 60 / 50
11x - 4 = 84
11x = 88
x = 8
Then the length of the side RS will be
RS = 11x - 4
RS = 11 × 8 - 4
RS = 88 - 4
RS = 84
The value of the variable x will be 88. Then the length of the side RS will be 84.
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What value of d makes the equation -4-11i+2i= 3i-(4-di) true?
Answer:
d = -12
Step-by-step explanation:
[tex]3i-4-di = -4-11i+2i\\3i-4-di = -4-9i\\3i-\left(4-di\right)-3i = -4-9i-3i\\-\left(4-di\right)=-4-12i\\\frac{- 4 - di}{-1} = -\frac{4}{-1}-\frac{12i}{-1}\\\frac{-\left(4-di\right)}{-1}\\= \frac{\left(4-di\right)}{1}\\=4-id\\=\frac{- 4 - 12i}{-1}\\=-\frac{- 4-12i}{1}\\=-( - 4)-( - 12i)\\=-\left(-4\right)-\left(-12i\right)\\= 4 + 12i\\4-(id) = 4 + 12i\\4 - id - 4 = 4 + 12i - 4\\- id=12i\\\frac{-id}{-i} = \frac{12i}{-i}\\\frac{id}{i}\\= d\\- \frac{12i}{i}\\= - 12[/tex]
Tom developed the following scientific question Do boys score higher on IQ than girls He gives the same IQ tests to two 12 years old boys and two 12 years old girls. After checking the IQ scores on the tests he realizes that the two girls had a much higher average score than the two boys He concluded that girls have higher IQs than boys
What is wrong with the experiment:
Not Ethical
not a random example
biased replication needed sample size too small
needs a control
did not use safety skills
more than one independent variable
Data does not make sense with problem statement
Conclusion does not make sense with the data and problem statement
Name:
Independent Variable
Dependent Variable
Constant
Control
How can you improve the experiment
1. The experiment conducted by Tom is wrong because of the following:
Not a random example (sample)Sample size is too small.2. The independent variable is the IQ test while the dependent variables are the IQ scores of the four boys and girls. The constant is the number of testers. There is no control.
3. To improve the experiment, Tom needs to increase the sample sizes of boys and girls to at least 50 boys and 50 girls to make the generalization reasonable. He should obtain the IQ scores of girls as a control to compare the IQ scores of boys.
What is an experiment?An experiment is a scientific study conducted to support or refute a hypothesis.
An experiment involves observations and actions performed to solve a problem or make a discovery.
Thus, Tom's experiment should be improved with research methodologies.
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5. Look at the model and fill in each blank with the correct answer.
bigger
smaller
?
5526
3496
?
(a) The smaller number is
(b) The difference between the two numbers is
(c) The sum of the two numbers is_
The smaller number is 3496
The difference between the two numbers is 2030
The sum of the two numbers is 9022
Given no.
5526,3496
The difference between the two numbers is 5526-3496=2030
The sum of the two numbers is 5526+3496=9022
The process of combining two or more objects is known as addition. The procedure of determining the sum of two or more integers in mathematics is known as addition. It is a basic mathematical operation that we all employ on a daily basis. When we work with money, compute our shopping bills, or calculate the time, we employ addition frequently.
Addition is a mathematical procedure that is used to add numbers. The sum of the provided numbers is the outcome of adding the supplied numbers. For instance, if we add 2 and 3, (2 + 3), the result is 5. We used the addition function on two integers, 2 and 3, to produce the sum, 5.
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One of the band members, Darius, wants to explore the waters of the Great Barrier Reef. Darius is currently -5 feet from the surface of the water and plans to explore a shipwreck that is at -75 feet from the surface. If he moves at a rate of -8 feet per minute, how many minutes does it take Darius to reach the shipwreck?
The number of minutes it takes Darius to reach the shipwreck is 8.75 minutes
What are linear equations?Linear equations are equations that have constant average rates of change. Note that the constant average rates of change can also be regarded as the slope or the gradient
How to determine the number of minutes it takes Darius to reach the shipwreck?The given parameters are
Initial position = -5 feet
Rate = -8 feet per minute
Final position = - 75 feet
The linear equation of this situation is
Final position (y) = Initial position + Rate * Time (x)
So, we have
-75 = -5 -8x
This gives
-8x = -70
Divide both sides by -8
x = 8.75
Hence. the number of minutes it takes Darius to reach the shipwreck is 8.75 minutes
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