Answer:
it would be 0.2
Step-by-step explanation:
When you multiply 0.4*0.5 it would equal 0.2 since 4*5=20 then 4.0*0.5= 0.2 since 0.2 in fraction form is 2/10 or 20/100.
Two points are located at (−9,−8) and (−6,−4).
Complete the equations below to show how you can use the Pythagorean theorem to find the distance between these two points.
Answer:
[tex]l(AB)=5\ units[/tex]
is the distance between the point A and point B.
Step-by-step explanation:
Let
A ≡ (x₁, y₁) ≡ (-9 , -8 )
B ≡ (x₂, y₂) ≡ (-6 , -4 )
Now by Pythagoras Distance formula we have
a² + b² = c²
[tex]l(AB) = \sqrt{((x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2} )}\\\\l(AB) = \sqrt{((-6--9)^{2}+(-4--8)^{2} )}\\\\l(AB)=\sqrt{(3)^{2}+(4)^{2} }\\\\l(AB) =\sqrt{25} \\\\l(AB) = 5\ units[/tex]
Answer
c= √(a² + b²)
c=√( -6 – -9 )² + ( -4 – -8 )²
Step-by-step explanation:
Which of the following equations has an infinite number of
solutions?
3(2x+1)=2(1+3x)+1
3(2x+1)=2(1+3x)-1
3(2x-1)=2(1+3x)-1
3(2x+1)=2(3+2x)-3
The following equation has infinite many solutions
3(2x+1)=2(1+3x)+1
Step-by-step explanation:
An equation has infinite solutions if there is same constant on both sides of the equation.
We will check each equation one by one to find the equation with infinite solutions.
So,
3(2x+1)=2(1+3x)+1
[tex]3(2x+1)=2(1+3x)+1\\6x+3 = 2+6x+1\\6x +3 = 6x +3\\6x-6x+3 = 3\\3 = 3[/tex]
3(2x+1)=2(1+3x)-1
[tex]3(2x+1)=2(1+3x)-1\\6x+3 = 2+6x-1\\6x+3=1+6x\\6x-6x+3 = 1\\3 = 1[/tex]
3(2x-1)=2(1+3x)-1
[tex]3(2x-1)=2(1+3x)-1\\6x-3 = 2+6x-1\\6x-3 = 1+6x\\6x-6x-3 = 1\\-3 = 1[/tex]
3(2x+1)=2(3+2x)-3
[tex]3(2x+1)=2(3+2x)-3\\6x+3 = 6+4x-3\\6x+3 = 3+4x\\6x-4x+3 = 3\\2x+3 = 3[/tex]
The following equation has infinite many solutions
3(2x+1)=2(1+3x)+1
Keywords: Solution of equation, Linear equation
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1) Which linear equation BEST represents the line of best fit for the scatterplot? A) y = x B) y = 3x C) y = -3x D) y = 5x + 1 2) Which graph shows no correlation? A) A B) B C) C D) D * Hover over answer image to enlarge 3) Which of the choices is the best example of a line of best fit for the scatterplot? A) A B) B C) C D) D * Hover over answer image to enlarge 4) The graph represents the current stock market trends. The best fit line shows A) no correlation B) weak positive correlation C) weak negative correlation D) strong positive correlation 5) Describe the correlation. A) no correlation B) prime correlation C) positive correlation D) negative correlation A survey was taken asking participants their age and how many soft drinks they drink a week. The results are displayed in the scatterplot. The data for people age 15-19 are not shown. Based on the scatterplot, how many soft drinks would 15-19 year olds be expected to drink in a week? A) 4 B) 6 C) 8 D) 14 7) Person BMI Total Cholesterol 1 20 157.87 2 22 170.85 3 24 183.83 4 26 196.81 5 28 209.79 6 30 222.77 7 32 235.75 Total Cholesterol and BMI were measured several individuals. Using the regression line, what is the expected total cholesterol if a person has a BMI of 35? A) 249.45 B) 253.21 C) 255.22 D) 257.43 8) The Dudley family just brought home twins from the hospital. Their neighbor's baby was born on the same day as the twins. A reasonable conclusion is that the Dudley family will spend more money on diapers. Is this association positive, negative, or neither? Is the relationship more likely a causation or correlation? A) neither B) positive; causation C) negative; correlation D) positive; correlation 9) Which causal relationship is justifiable? A) Children with bigger feet spell better. Spelling better causes a child's feet to grow. B) Surf board sales rise when lemonade sales rise. Drinking lemonade causes more people to buy surfing boards. C) The traffic is heavier around the stadium when a game is being played. Games being played cause more traffic. D) An elementary school child has more cavities than his baby brother. He also has a larger vocabulary. An increased vocabulary causes cavities. 10) Based on this graph, which statement MUST be true? A) More x causes less y. B) More x causes more y. C) There is a negative correlation between x and y. D) There is a positive correlation between x and y.
The questions pertain to the analysis of linear relationships between variables using scatter plots, lines of best fit through linear regression, and understanding correlation coefficients to identify the strength and direction of relationships in data.
Explanation:The questions provided are centered around the concepts of linear equations, scatter plots, correlation, and regression analysis in the realm of mathematics. Scatter plots are graphical representations showing the relationship between two variables. In these types of questions, the independent variable is plotted on the x-axis, and the dependent variable is plotted on the y-axis. To analyze the relationship, one can use linear regression to find the line of best fit, which is a straight line that best represents the data on a scatter plot. The correlation coefficient, often denoted as r, indicates the strength and direction of the linear relationship between two variables.
The line of best fit can be found by calculating the least-squares line, which minimizes the sum of the squares of the vertical distances of the points from the line. The equation of this line is typically in the form y = a + bx, where 'a' is the y-intercept and 'b' is the slope. The slope indicates how much the dependent variable changes for a one-unit change in the independent variable. The y-intercept is the value of the dependent variable when the independent variable is zero. A correlation coefficient of zero implies no linear relationship between the variables.
When looking at data such as stock market trends or health-related measurements like BMI and cholesterol, understanding the strength and type of correlation is essential for making predictions. For example, a positive correlation indicates that as one variable increases, the other variable tends to increase, while a negative correlation indicates the opposite. It's important to note that correlation does not imply causation; just because two variables are correlated does not mean that one causes the other.
If 4 quarts of paint are needed for a 75-foot fence, how many quarts are needed for an
825-foot fence?
Answer:
44 quarts of paint
Step-by-step explanation:
Given,
75-foot fence needs = 4 quarts.
We have to use the unitary method to determine how many quarts will be needed for the fencing system. Hence,
75-foot fence needs = 4 quarts of paint
1-feet fence needs = (4/75) quarts of paint
825-foot fence needs = (4 x 825)/75 quarts of paint
= 3,300/75 quarts of paint
= 44 quarts of paint
Therefore, we need 44 quarts of paint for 825-foot fence.
To determine how many quarts of paint are needed for an 825-foot fence, we can set up a proportion and solve for the unknown quantity.
Explanation:To determine how many quarts of paint are needed for an 825-foot fence, we can use the concept of ratios. Since we know that 4 quarts of paint are needed for a 75-foot fence, we can set up a proportion:
4 quarts of paint / 75 feet = ? quarts of paint / 825 feetTo solve for the unknown quantity, we can cross-multiply and solve for the missing value:
4 quarts of paint * 825 feet = ? quarts of paint * 75 feetDividing both sides of the equation by 75, we get:
? quarts of paint = (4 quarts of paint * 825 feet) / 75 feetBy performing the calculation, we find that quarts of paint is approximately 44 quarts. Therefore, 44 quarts of paint are needed for an 825-foot fence.
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Evaluate x-2 for x=8
Answer:
6
Step-by-step explanation:
8-2=6
A theater is selling tickets for a performance. Mr. Smith purchased 8 senior tickets and 5 child tickets for $136 for his friends and family. Mr. Jackson purchased 4 senior tickets and 6 child tickets for $96. What is the price of a senior ticket?
Answer:
The price of a senior ticket is $12.
Step-by-step explanation:
Given:
Mr. Smith purchased 8 senior tickets and 5 child tickets for $136. Mr. Jackson purchased 4 senior tickets and 6 child tickets for $96.
Now, to get what is the price of a senior ticket.
Let the senior ticket be [tex]x[/tex] and the child ticket be [tex]y[/tex]:
So, according to question
[tex]8x+5y=136[/tex].........(1)
[tex]4x+6y=96[/tex]...........(2)
Now, we have system of equations:
Multiplying the equation (2) by -2 we get:
[tex]-8x-12y=-192[/tex].......(3)
Now, adding the equation (3) and (1) the variables and the numbers:
[tex]-8x-12y+8x+5y=-192+136[/tex]
[tex]-7y=-56[/tex]
Dividing both sides by -7 we get:
[tex]y=8[/tex]
Putting the value of y in equation (2) we get:
[tex]4x+6(8)=96[/tex]
[tex]4x+48=96[/tex]
On solving the equation we get:
[tex]x=12[/tex].
Therefore, the price of a senior ticket is $12.
If x=2, what is (.8x + .1.2) equals
Answer:
2.8
Step-by-step explanation:
.8*2=1.6 1.2
1.6+1.2=2.8
Answer:
2.8
Step-by-step explanation:
Simply Substitute for X:
[tex]0.8(2) + 1.2\\1.6+1.2\\2.8[/tex]
You would get 2.8 as the answer.
9. find the value of x ?
Answer:
B is the answer at least i think also are you in gaca? if so webmail me my name is Angela Petersen
an = 5 × an-1 and a1 = 3.
What is a5
Enter your answer in the box.
A5 =
Answer:
[tex]A_{5} = 1875[/tex]
Step-by-step explanation:
The geometric sequence is represented by
[tex]A_{n} = 5 \times A_{n - 1}[/tex] .......... (1) and [tex]A_{1} = 3[/tex]
So, [tex]A_{2} = 5 \times A_{2 - 1} = 5 \times A_{1} = 5 \times 3 = 15[/tex]
{Putting n = 2}
Again, putting n = 3 in equation (1), we get
[tex]A_{3} = 5 \times A_{2} = 5 \times 15 = 75[/tex]
Again, putting n = 4 in equation (1), we get
[tex]A_{4} = 5 \times A_{3} = 5 \times 75 = 375[/tex]
Again, putting n = 5 in equation (1), we get
[tex]A_{5} = 5 \times A_{4} = 5 \times 375 = 1875[/tex] (Answer)
Jade normally leaves work at 5:00 pm, but she is leaving work 10 minutes late today. She decides to make up time by taking the toll road instead of side streets. She can travel two times faster by taking the toll road. Create an equation in terms of x to represent the number of minutes after 5:00 pm she arrives home from work if she leaves late. Let x represent the number of minutes her normal commute takes when she leaves on time.
y equals one half times x minus ten
y = 2x − 10
y = 2x + 10
y equals one half times x plus ten
Answer:
It will be answer choice D.
Step-by-step explanation:
It'll take the half the usual time because she is taking a road that get's her there 2 times faster, but also add 10 because she was 10 minutes late.
The linear equation in terms of x to represent the number of minutes after 5:00 pm she arrives home from work if she leaves late is (y = 0.5x + 10).
Given :
Jade normally leaves work at 5:00 pm, but she is leaving work 10 minutes late today. She decides to make up time by taking the toll road instead of side streets. She can travel two times faster by taking the toll road.Let x represent the number of minutes her normal commute takes when she leaves on time.According to the given, data x represent the number of minutes her normal commute takes when she leaves on time.
Let y be the total time taken by Jade after 5:00 pm to reach home. So, the linear equation that represents the given situation is:
[tex]\rm y = \dfrac{1}{2}x+10[/tex]
Therefore, the correct option is D).
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find the slope of (5,-2)and(5,8)
Answer:
The answer is undetermined
Step-by-step explanation:
i'm not joking the when the line is parallel to the y axis it has no slope because it runs vertically but if the line was horizontal the slope would be 0
Please it's urgent ans please
A movie theater has n rows and m seats in each row. If each ticket costs $5.60, how much do all tickets to one movie cost?
Total cost of tickets for one movie showing is calculated by multiplying the total number of seats (n rows times m seats per row) by the cost per ticket, which is $5.60.
Explanation:To calculate the total cost of all tickets for one movie showing in a theater with n rows and m seats per row, you'll need to use multiplication to find the total number of seats and then multiply it by the cost per ticket. Here is a step-by-step guide:
Multiply the number of rows (n) by the number of seats per row (m) to find the total number of seats. This is n × m.Multiply the total number of seats by the cost per ticket, which is $5.60, to find the total cost for all tickets. This is (n × m) × $5.60.The final calculation will give you the total cost of tickets for one movie showing.For example, if a theater has 10 rows with 20 seats in each row, the total number of seats is 10 × 20 = 200. The total cost for all tickets would then be 200 × $5.60 = $1120.
The first day of Alex's trip was a Monday. What was the day of the week on Alex's 39 day of his trip?
Answer: monday
Step-by-step explanation:
Vivian has $57,366.66 in a savings account. The interest rate is 9 2/5%, compounded annually.
To the nearest cent, how much interest will she earn in 4 years
Answer:20652.00
Step-by-step explanation:
The formula would be p*r*t
p is the principal which is amount of money before interest
r is the interest rate
t is time period
so it would be 57,366.66*9 2/5%*4
9 2/5 as a decimal would be 9.4 or 0.09
57,366.66*9.4=539246.604*4=2156986.416
The correct amount would be $20652.00 in 4 years
Use 0.09 when u multiply instead of 9.4 because it is much easier
I NEED HELP ASAP
APEX!!!
The series will be:
[tex]4+16+64+.......+2^{50}[/tex]
Hence, Option A is the right answer
Step-by-step explanation:
The series can be fount out by putting the values of i in the expression written with the summation
The expression is:
[tex]2^{2i}[/tex]
while i = 1 to 25
Putting i = 1
[tex]2^{2(1)}\\= 2^2\\= 4[/tex]
Putting i = 2
[tex]2^{2(2)}\\= 2^4\\= 16[/tex]
Putting i = 3
[tex]2^{2(3)}\\= 2^6\\= 64[/tex]
....
Putting i = 25
[tex]2^{2(25)}\\= 2^{50}[/tex]
The series will be:
[tex]4+16+64+.......+2^{50}[/tex]
Hence, Option A is the right answer
Keywords: Summation, Series
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Hiroto’s texting plan costs $20 per month, plus $0.05 per text message that is sent or received. Emilia’s plan costs $10 per month and $0.25 per text. Using the graph below, which statement is true?
Hiroto’s plan costs more than Emilia’s plan when more than 50 texts are sent.
Both plans cost the same when 22 texts are sent.
Emilia’s plan costs more than Hiroto’s plan when more than 22 texts are sent.
Both plans cost the same when 50 texts are sent.
Answer:
it's D
Step-by-step explanation:
y= .05x+20
x=50
y=.05(50)+20
2.5+20
y=22.5
y=.25x+10
x=50
y=.25(50)+10
12.5+10
y=22.5
Ginger adds 15 mL of vitamin C drops to her guinea pig's water everyday. A bottle
of vitamin C drops holds 350mL and costs $4.85. About how much does she spend
on vitamin C drops each year?
A- $70 to $90
B- $50 to $70
C- more than $90
D- less than $50
it is d
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
First find how many bottles Ginger will need.
15 mL x 365 day = 5475 mL for 1 yr
5475 mL / 350mL = 16 bottles
Then find the price for the 16 bottles.
16 bottles x $4.85 = $77.60
1/8% is what as a decimal
Answer:
[tex]\large\boxed{\dfrac{1}{8}\%=\dfrac{1}{800}}[/tex]
Step-by-step explanation:
[tex]p\%=\dfrac{p}{100}\\\\\dfrac{1}{8}\%=\dfrac{\frac{1}{8}}{100}=\dfrac{1}{8}\cdot\dfrac{1}{100}=\dfrac{1}{800}\\\\\text{other method}\\\\\text{Convert the fraction to the decimal:}\\\\\dfrac{1}{8}=0.125\to\dfrac{1}{8}\%=0.125\%\\\\0.125\%=\dfrac{0.125}{100}=\dfrac{0.125\cdot1000}{100\cdot1000}=\dfrac{125}{100000}=\dfrac{125:125}{100000:125}=\dfrac{1}{800}[/tex]
list from smallest to largest 7/12 1/2 2/3 4/10 1/6
Answer:
So if you're having difficulty visualizing the differences, you can rewrite them so they all have the same denominator
7/12 = 35/60
1/2 = 30/60
2/3 = 40/60
4/10 = 24/60
1/6 = 10/60
So now it's easier to see how they compare to each other.
10/60, 24/60, 30/60, 35/60, 40/60
And then simplify them or just refer to what they were before
1/6, 4/10, 1/2, 7/12, 2/3
I hope this helps!
2.
Last week, the price of oranges at the farmer's market was $1.75 per pound. This
week, the price has decreased by 20%. What is the price of oranges this week?
Answer:
$1.40
Step-by-step explanation:
1.75-(1.75×.2)
1.75-.35
1.4
Answer:
$1.40
Step-by-step explanation:
100% - 20% = 80%
Therefore, Multiply $1.75 by 80% to get this week's price of orange
$1.75 x 80% = $1.40 per pound
A bag has 30 tiles. Numbered 1-30. Perfect squares to non-perfect squares . Write ratio in simplest form .
Answer:
Ratio = [tex]\frac{Perfect.squares}{non.Perfect.squares}[/tex] = [tex]\frac{1}{5}[/tex]
Step-by-step explanation:
The perfect squares from 1-30 are:
1, 4, 9, 16, 25
Total no. of perfect squares = five =5
Total no. of non perfect squares = 30-5 = 25
Ratio =[tex]\frac{Perfect.squares}{non.Perfect.squares}[/tex] = 5 / 25 = [tex]\frac{1}{5}[/tex]
The ratio of perfect squares to non-perfect squares for the numbers 1 to 30 is 1:5.
Explanation:A perfect square is a number that is the square of an integer. For the numbers 1 to 30, the perfect squares are 1, 4, 9, 16, 25, as these numbers are squares of integers 1, 2, 3, 4, 5 respectively. The number of perfect squares is 5.
The total number of tiles is 30. So the number of non-perfect squares is 30 - 5 = 25.
The ratio of perfect squares to non-perfect squares in simplest form, then, is 5 : 25. Simplified, this ratio is 1 : 5.
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Using prime factorization what is the GCF 3y 2 squared, 24y 3 cubed
Answer:
[tex]3y^2[/tex]
Step-by-step explanation:
Given:
To find the GCF of [tex]3y^2\ and\ 24y^3[/tex] using prime factorization.
Writing each in prime factors:
3 = 1 [tex]\times[/tex] 3
24 = 1 [tex]\times[/tex] 2 [tex]\times[/tex] 2 [tex]\times[/tex]2 [tex]\times[/tex] 3
Now, GCF of 3 and 24 is 3
[tex]y^2=1\times y\times y[/tex]
[tex]y^3=1\times y\times y\times y[/tex]
GCF of [tex]y^2[/tex] and [tex]y^3[/tex] is [tex]y\times y=y^2[/tex].
Therefore, the overall GCF of the two terms is [tex]3y^2[/tex]
Suppose the graph of y=f(x) includes the points (1,5), (2,3), and (3,1).
Based only on this information, there are two points that must be on the graph of y=f(f(x)). If we call those points (a,b) and (c,d), what is ab+cd?
Answer: 17
================================
How I got that answer:
(2,3) and (3,1) have '3' in common in that the y value of the first pairs with the x value of the second.
If you picture a chain, then you start with x = 2, move to y = 3, then move to x = 3 and then y = 1
2 ---> 3 ---> 3 ---> 1
So f(f(2)) = f(3) = 1
If g(x) = f(f(x)), then we know (2,1) is on the graph of g(x)
-------------------------
Repeat for (3,1) and (1,5)
3 ---> 1 ---> 1 ---> 5
f(3) = 1
g(x) = f(f(x)) = f(f(3)) = f(1) = 5
We know that (3,5) is on the graph of g(x)
-------------------------
The two points on g(x) are: (2,1) and (3,5)
Comparing that to (a,b) and (c,d) we can see
a = 2, b = 1, c = 3, d = 5
a*b + c*d = 2*1 + 3*5 = 2 + 15 = 17
Please help !!!!!!!!!!
Answer:
Yes (6,3) is a solution
Step-by-step explanation:
It because both of the lines that are shaded intercepted so it works for both
Please simplify the expression.
[tex]x^{7}[/tex] · [tex]y^{3}[/tex] · [tex]x^{8}[/tex] · [tex]y^{2}[/tex]
A. [tex]x^{15}[/tex] · [tex]y^{6}[/tex]
B. [tex]x^{15}[/tex] · [tex]y^{5}[/tex]
C. [tex]x^{56}[/tex] · [tex]y^{6}[/tex]
D. [tex]x^{56}[/tex] · [tex]y^{5}[/tex]
What is 80-5y when y=9
Answer:
Step-by-step explanation:
It’s 35 because 9*5 is 45 and 80-45 is 35
If y varies directly as x, and y is 48 when x is 6, which expression can be used to find the value of y when x is 2?
E
o y- 48 (2)
y (43)
O ya 4036
The expression will be y =8*2 or y = (48/6)*2
Step-by-step explanation:
The direct proportion is given if y varied directly as x
y∝x
When the proprtionality symbol is removed, a proportionality constant is introduced.
y = kx
as we know y = 48 when x = 6
[tex]48 = k * 6\\k = \frac{48}{6}\\k = 8[/tex]
The equation will be:
y = 8x
So when x=2
y = 8*2
y = 16
Hence,
The expression will be y =8*2 or y = (48/6)*2
Keywords: Proportion, Direct proportion
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To find the value of y when x is 2 in a direct variation, use the constant of variation k found from the given values (y = 48 when x = 6), which is 8 in this case, and multiply it by 2 to get y = 16.
If y varies directly as x, this means that y can be expressed as y = kx, where k is the constant of variation. Given that y = 48 when x = 6, we can find the value of k by substituting these values into the direct variation equation:
k = y/x = 48/6 = 8
Now that we have k, we can find the value of y when x is 2:
y = kx = 8 x 2 = 16
Therefore, the expression to find the value of y when x is 2 is y = 8 x 2.
Need some to answer this
500=(2xL)+(____x____)
500=2L+_______
_____=2L
_____ divided by 2=L
_____=L
A rectangular garden has a width of 90 feet. Thee predetermining of the garden is 500 feet what is the length of the garden
Answer:
The missing part is given below.
500=(2xL)+(__2__x_90___)
500=2L+__180_____
_320__=2L
_320____ divided by 2=L
_160____=L
Step-by-step explanation:
Given:
Perimeter of Rectangle = 500 feet
Width = 90 feet
Length = L
Solution:
[tex]\textrm{Perimeter of Rectangle} = 2(Length + Width)\\\\\textrm{On substituting the given values in it we get}\\500 = 2\times L + 2\times 90\\\\500 - 180 =2\times L\\320 =2\times L\\\\\frac{320}{2}=L\ ....................... (\textrm{320 divided by 2}) \\160 = L[/tex]
Final answer:
To find the length of the garden, the formula for the perimeter of a rectangle is used (P = 2L + 2W), where the perimeter is 500 feet and the width is 90 feet. By substituting these values and solving for L, we find that the length of the garden is 160 feet.
Explanation:
Finding the Length of a Garden
To find the length of a rectangular garden when you know the perimeter and the width, you can use the formula for the perimeter of a rectangle, which is P = 2L + 2W, where P stands for the perimeter, L is the length, and W is the width. The student has provided that the width (W) of the garden is 90 feet and the perimeter (P) is 500 feet.
Substituting the values we know into the formula, we get:
500 = 2L + 2(90)
Now, we solve for the length (L) by following these steps:
First, do the multiplication: 500 = 2L + 180
Next, subtract 180 from both sides to isolate the term with L: 320 = 2L
Finally, divide both sides by 2 to solve for L: 160 = L
Therefore, the length of the garden is 160 feet.
Factor the expression using the GCF.
14x + 63
Help! Please
The final factored expression using the GCF is: 14x+63=7(2x+9)
To factor the expression 14x + 63 using the Greatest Common Factor (GCF), let's first find the GCF of the numerical coefficients 14 and 63. The largest number that divides both 14 and 63 without a remainder is 7, making it the GCF.
Next, we divide each term by the GCF:
14x divided by 7 is 2x
63 divided by 7 is 9
Now that we have divided each term by the GCF, we can write the original expression as a product of the GCF and the simplified expression:
14x + 63 = 7(2x + 9)
This expression is fully factored as the product of the GCF (7) and the binomial (2x + 9).