Answer:
There are 26 letters in the alphabet, and 9 digits from 1 to 9.
The probability of choosing X as the letter is 1/26, since there is only one X in the alphabet.
The probability of choosing a prime number digit is 4/9, since there are 4 prime numbers among the digits 1-9 (2, 3, 5, and 7) and 9 total digits.
Therefore, the probability of choosing X followed by a prime number digit is:
P(X and prime) = P(X) × P(prime) = (1/26) × (4/9) = 4/234
So the probability of getting X followed by a prime number is 4/234, or approximately 0.017 or 1.7%.
Altenative method -2x² + × +3
Answer:
Step-by-step explanation:
-(2x^2-x-3)
-(2x^2-3x+2x-3)
-[2x(x+1)-3(x+1)]
(x+1)(3-2x)
Writing equations of lines
Answer:
y=-5x+6
Step-by-step explanation:
Slope-intercept form is y=mx+b, with m being the slope and b being the y-intercept.
The y-intercept is where the line crosses over the y-axis. In this case, there is a point on 6, which means 6 is our y-intercept.
Next, we need to calculate the slope. We know slope = rise/run.
Start at the point -9,3. We rise 5 and go left 1 to get to the point -4,2.
Since we went left, our slope is 5/-1, which simplifies to -5.
Our final answer, written in slope intercept form, is y=-5x+6
Which equation correctly uses the value of x to
represent the cosine of angle A?
O cos(53⁰) =
O cos(53⁰) =
O cos(53⁰) =
O cos (53⁰) = 5
PLEASE HELP
Answer: y/5
Step-by-step explanation:
5 is the hypotenuse of the triangle and it always goes at the bottom of the fraction. Cosine is the closest two sides to the angle. Giving the answer y/5
Step-by-step explanation:
For RIGHT triangles ( such as this one) , remember S-O-H-C-A-H-T-O-A .
SinΦ = Opposite LEG / Hypotenuse
Sin (53) = 4/x
Question 10
10 pts
Jayden has a brother and a sister in college. He traveled 2.5 x 102 miles to visit his sister. He traveled 7.5 x 10³ miles to
visit his brother. The distance Jayden traveled to visit his brother is how many times as much as the distance Jayden traveled
to visit his sister?
Jayden traveled [blank] times as many miles to visit his brother than his sister.
Jayden traveled 30 times as many miles to visit his brother than his sister.
What is travel?
To find how many times as much Jayden traveled to visit his brother than his sister, we can divide the distance he traveled to visit his brother by the distance he traveled to visit his sister:
(7.5 x 10³ miles) / (2.5 x 10² miles) = 30
Therefore, Jayden traveled 30 times as many miles to visit his brother than his sister.
What is distance?
Distance is the measure of the space between two points or objects. It is typically measured in units such as meters, kilometers, miles, feet, or inches. In physics, distance is the scalar quantity that represents the magnitude of the displacement between two positions. In mathematics, distance is a metric that satisfies certain properties, such as being non-negative and symmetric, and it is used to define concepts like convergence and continuity. The concept of distance is fundamental to many fields of study, including physics, mathematics, geography, and engineering.
To know more about distance, visit:
https://brainly.com/question/29055485
#SPJ1
The diameter of a circle is 8 kilometers. What is the circle's area? Use 3.14 for . square kilometers
Answer:
The formula for area of a circle is A = π r²
Step-by-step explanation:
We have the diameter of the circle (8 kilometers) which gives us enough information to find the area of this cicle. We can find the radius from the dimeter (by using the simple formula r=d/2) the radius is always half of the diameter. So 8 km/2= 4 kilmeters so the radius is 4 kilometers.
now that we have the radius we can solve this problem
π×4²= 50.24
what I did was that I multiplied 3.14×4² than i got 50.24
since you want your answer in square km the answer would be 50.24²Kilometers
i hope this helps :)
happy studying!!!
or What is the surface area of this cylinder? Use ≈ 3.14 and round your answer to the nearest hundredth. 8 ft 6 ft square feet
The surface area of the cylinder has a radius of 8cm and a height of 6cm is 703.36 square feet.
To calculate the surface area of a cylinder, we need to add the area of the top and bottom circles to the area of the curved side.
The formula for the area of a circle is:
A = [tex]\pi r^2[/tex]
where A is the area, π (pi) is a mathematical constant approximately equal to 3.14, and r is the radius.
The formula for the curved surface area of a cylinder is:
C = 2πrh
where C is the curved surface area, r is the radius, and h is the height of the cylinder.
Given that the radius is 8cm and the height is 6cm, we can calculate the surface area as follows:
Area of top circle =
Area of bottom circle =[tex]\pi r^2[/tex] = 3.14 x [tex]8^2[/tex] = 200.96 cm square
Curved surface area = 2πrh = 2 x 3.14 x 8 x 6 = 301.44 cm square
Therefore, the total surface area of the cylinder is:
Total surface area = Area of top circle + Area of bottom circle + Curved surface area
Total surface area = 200.96 [tex]cm^2[/tex] + 200.96 [tex]cm^2[/tex] + 301.44 [tex]cm^2[/tex]
Total surface area = 703.36 [tex]cm^2[/tex]
What is the surface area of the cylinder? Use 3.14 for pi and round your answer to the nearest hundredth with radius 8ft and height 6ft.
Learn more about surface area of cylinder here:
https://brainly.com/question/28575608
#SPJ1
Write as a product. 1 -25x^2 +10xy-y^2
The expression 1 -25x² +10xy-y² in product form is (1-5x-y)(1+5x-y).
What is expression?In mathematics, an expression is a combination of numbers, variables, and mathematical operations, such as addition, subtraction, multiplication, division, and exponentiation. Expressions can be simple, such as a single number or variable, or complex, involving multiple operations and variables. Expressions are used in a variety of mathematical contexts, including algebra, calculus, and geometry. They can be evaluated to obtain a numerical value, simplified by combining like terms or using algebraic identities, or used to represent mathematical relationships and patterns.
Here,
The given expression can be written as a product of two binomials as follows:
(1-5x-y)(1+5x-y)
Expanding this product gives:
1(1) + 5x(1) - y(1) - 5x(1) - 25x² + 5xy + y(1) - y(5x) - y²
Simplifying this expression gives:
1 - 25x² + 10xy - y²
To know more about expression,
https://brainly.com/question/1859113
#SPJ1
Find the value of each variable in the parallelogram. Round your answers to the nearest tenth, if necessary. G a = (46) K (3a +19) b H 56°
The value of every variable in the parallelogram is: a = 9 HK = 27.0 GK = 46 G = 63.5°
What do you mean by Parallelogram ?A parallelogram is a special type of quadrilateral that has both pairs of opposite sides parallel and equal.These shapes include squares, rectangles, rhombuses, and rhomboids. All of these shapes have four sides, four corners, and four angles
We know that sides of a parallelogram are parallel and congruent, as opposite angle
According to question that GA equals HK, as:
46 is equal to 3a plus 19 When we subtract 19 from both sides, we get:
27 x 3a is the result of dividing both sides by 3:
we know that opposite angles in a parallelogram are congruent, we can use a = 9. Since angle H is 56 degrees, angle K must also be 56 degrees. The length of side HK can be determined using the Law of Cosines:
HK2 = GA2 + GK2 - 2(GA)(GK)cos(H) When we substitute the values we are familiar with, we obtain:
After solving the equation we obtain: HK2 = 462 + (3a + 19)2 - 2(46)(3a + 19)cos(56°).
HK2 = 2112 + 9a2 + 342a - 2764cos(56°) HK2 = 2112 + 9(9)2 + 342(9) - 2764cos(56°) HK2 732.4 By taking the square root of both sides, we obtain the following results:
∵ GA = 46, we can use the parallelogram's opposite sides being congruent to determine the length of side GK: HK 27.0
Then, we can use the Law of Cosines to determine the angle G's measurement:
cos(G) = (HK2 + GA2 - GK2) / (2(HK)(GA)) Using the values we are familiar with, we get,
cos(G) = (27.02 + 462 - 462) / (2(27.0)(46)) cos(G) 0.465 Using the inverse cosine, we get the following:
G ≈ 63.5°
Hence, the worth of every variable in the parallelogram is:
a = 9 HK = 27.0 GK = 46 G = 63.5°
Learn more about Quadrilateral here
https://brainly.com/question/29934440
SPJ1
Suppose you wish to invest money safely and are trying to decide between stock options in two companies. The average rates of return are the same for both companies but, one company has a much larger standard deviation of its rates of return. a. Which company should you invest in? The company with the smaller standard deviation The company with the larger standard deviation b. Why is this the better choice?
Answer:
If the average rates of return are the same for both companies, but one company has a much larger standard deviation of its rates of return. You should invest in a company with a smaller standard deviation.
This is the better choice because a larger standard deviation means that the company's returns are more variable, which implies more risk. While higher risk can result in higher returns, it can also result in significant losses. Investing in a company with a smaller standard deviation of its rates of return will likely result in a more stable return on investment and therefore be a safer investment.
In general, investors should consider both the average and variability returns when making investment decisions. While higher average returns are desirable, they may not be worth the additional risk if the variability of returns is too high.
an international company has 16,500 employees in one country. if this represents 16.8% of the company's employees, how many employees does it have in total? round answer to whole number
Consider the following system of two linear equations:
3y + 2x = 15
x – y = 0
Select the graph that correctly displays this system of equations and point of intersection.
The answer is x = 3 y=3. This can be solved by reorganising the equation 2x + 3y = 15, x-y=0.
What is Multiplication Zero Property?This property is true for all real numbers, including integers, fractions, decimals, and any other real number. The Multiplication Zero Property states that the product of any number and zero is equal to zero.
Reorganising the equation:
2x + 3y = 15
x-y=0
To find the solution, multiply both parts of the equation by a multiplier, as in 2x+3y=15.
2(x-y)=0 x 2
Utilize the multiplicative distributional rule.
2x+3y=15
2x-2y=0 x 2
Application of the Multiplication Zero Property
2x+3y=15
2x-2y=0
Separate the two formulas: 2x+3y-(2x-2y)=15-0
2x+3y-2x+2y=15
Take the parentheses off
3+2=15
Expressions combined: 5y=5
Multiply both sides of the equation by the value of the variable: y = 15/5
Take out the joining piece. y=3
Substitute 0 for 2x-2x-2x in one of the computations.
2x-6=0 is used to determine the product.
In the calculation, 6 should be shifted to the left: 2x=6
Add the variable's value to both ends of the equation, then subtract it:
x = 6/2
Take out the intermediary: 2 = 3
The answer is x = 3 y=3.
For more questions related to real numbers
https://brainly.com/question/17201233
#SPJ1
URGENT PLEASE HELP!! write a polynomial with zeros 0,-3, and 2 with multiplicities 2,1, and 2 respectively. what is its degree?
the polynomial with zeros 0, -3, and 2 with multiplicities 2, 1, and 2 respectively is: f(x) = x⁵ - 8x⁴ - 4x³ + 48x² - 96xThe degree of this polynomial is 5, since the highest power of x in the polynomial is 5.
what is polynomial ?
A polynomial is a mathematical expression consisting of variables (also known as indeterminates) and coefficients, combined using arithmetic operations such as addition, subtraction, multiplication, and non-negative integer exponents.
In the given question,
If the zeros of a polynomial are given, we can construct the polynomial by multiplying its factors. Since the given zeros are 0, -3, and 2 with multiplicities 2, 1, and 2 respectively, we can write the factors of the polynomial as follows:
(x - 0)²(x - (-3))(x - 2)²
Simplifying this expression, we get:
x²(x + 3)(x - 2)²
Expanding this expression, we get:
x^²(x² - 4x - 12)(x - 2)²
Multiplying the factors and combining like terms, we get:
x⁵ - 8x⁴ - 4x³ + 48x² - 96x
Therefore, the polynomial with zeros 0, -3, and 2 with multiplicities 2, 1, and 2 respectively is:
f(x) = x⁵ - 8x⁴ - 4x³ + 48x² - 96x
The degree of this polynomial is 5, since the highest power of x in the polynomial is 5.
To know more about polynomial , visit:
https://brainly.com/question/11536910
#SPJ1
✓
M
T
S
8
V125°
50
N
Practice Problem 3
Q
In Circle V, mzCVQ = 125° and m/ZVW = 50⁰.
Calculate the mCQW, given that V is the center and Cz
and MQ are diameters.
Submit
After answering the presented question, we can conclude that angles m/CQW = 180° - 125° - 50° => m/CQW = 5° Therefore, m/CQW = 5°.
what are angles?An angle is a shape in Euclidean geometry that is made up of two rays that meet at a point in the middle known as the angle's vertex. Two rays may combine to form an angle in the plane where they are located. When two planes collide, an angle is generated. They are referred to as dihedral angles. An angle in plane geometry is a possible configuration of two radiations or lines that express a termination. The word "angle" comes from the Latin word "angulus," which meaning "horn." The vertex is the place where the two rays, also known as the angle's sides, meet.
The measure of an inscribed angle is half the measure of its intercepted arc, according to the inscribed angle theorem.
Because C and Q are on the same diameter MQ, m/CQM = 90°. As a result, the intercepted arc CZQ measures 180° - 90° = 90°.
Similarly, because W and Q are on the CW diameter, we have m/CWQ = 90°. As a result, the intercepted arc WVQ measures 180° - 90° = 90°.
m/CQW = 180° - m/CVQ - m/ZVW
m/CQW = 180° - 125° - 50°
m/CQW = 5°
Therefore, m/CQW = 5°.
To know more about angles visit:
https://brainly.com/question/14569348
#SPJ1
The floor of a storage unit is 7 meters long and 2 meters wide. Starting at the far left corner, Irma walks down the length, across the width, and then diagonally back to the far left corner. How far does Irma walk? If necessary, round to the nearest tenth.
Answer: 14.4
Step-by-step explanation:
Which of the following numbers is included in the graph of 3x +8 > -2x - 16
a) -5
b) -6
c) -4
d) -20
The answer is Option (C) -4.
BRAINEST IF CORRECT look at the picture
Step-by-step explanation:
Vertical angles of two crossing lines are equal so y = 163 degrees
... and z = x
will give thanks and brainly
trig
Required length of HF, angle H, angle F are 12.05 unit, 44.2°, 80.5° respectively.
How to find the length of the third side of a triangle when length of two sides are already given?
To find the length of the third side, HF, we can use the Law of Cosines, which states that:
c² = a² + b² - 2ab cos(C)
where c is the length of the side opposite angle C, and a and b are the lengths of the other two sides.
In this case, we have:
HF² = HG² + GF² - 2HG × GF × cos(HGF)
HF² = 7² + 13² - 2 × 7 × 13 × cos(136°)
HF² = 49 + 169 - 182cos(136°)
HF² ≈ 145.35
Taking the square root of both sides,
HF ≈ 12.05
So the length of the third side, HF, is approximately 12.05 units.
To find the angles, we can use the Law of Sines, which states that,
a/sin(A) = b/sin(B) = c/sin(C)
where a, b, and c are the lengths of the sides opposite angles A, B, and C, respectively.
In this case, we know the lengths of HG, GF, and HF, so we can find the angles H and F,
sin(H) / 7 = sin(136°) / 12.05
sin(H) ≈ 0.689
H ≈ 44.2°
sin(F) / 13 = sin(136°) / 12.05
sin(F) ≈ 0.992
F ≈ 80.5°
Therefore, the length of HF is approximately 12.05 units, the angle H is approximately 44.2°, and the angle F is approximately 80.5°.
Learn more about triangle here,
https://brainly.com/question/17335144
#SPJ1
What is the area, in square inches, of the trapezoid below?
Answer:
A = (1/2)(3.6)(5.1 + 8.5 + 5)
= 1.8(18.6)
= 33.48 square inches
Please see the attached
After 3 years, there will be $2,810.95 in the Richardsons' account and the interest earned on the Richardsons' investment after 3 years will be around $310.95.
(a) The interest rate per month is r = 1.36% ÷ 12 = 0.01133333. The number of compounding periods in 3 years is n = 3 × 12 = 36. Therefore, the amount A after 3 years is:
A = 2500 × (1 + r)ⁿ
A = 2500 × (1 + 0.01133333)³⁶
A = $2,810.95
Therefore, after 3 years, there is $2,810.95 in the Richardsons' account.
(b) The interest earned is the difference between the final amount and the initial investment:
Interest = A - P
I = $2,810.95 - $2,500
I = $310.95
Therefore, the interest earned on the Richardsons' investment after 3 years is $310.95.
To learn more about investment follow the link: https://brainly.com/question/17252319
#SPJ1
A community college has 1400 parking spots on campus. When it builds its new library, the college will lose 63 of its parking spots. What will be the percent decrease in the number of available parking spots?
According to the question we can conclude that the percent decrease in the number of available parking spots is 4.5%.
What is percentage?In mathematics, a percentage is a number or ratio that's also expressed as just a fraction from 100. Occasionally, the acronyms "pct.," "pct," as well as "pc" are also used. Yet it is commonly indicated by the percent sign, "%." The % amount has no dimensions. Percentages are essentially fractions when the denominator is 100. Use the percent sign (%) to indicate that what a number is just a percentage by placing it next to it. For instance, you score a 75% if you properly answered 75 out of questions in total on something like a test (75/100). Divide the money even by total as well as multiply the outcome by 100 to calculate percentages. The formula for calculating the percentage is (value/total) x 100%.
Given,
To find the percent decrease in the number of available parking spots, we need to calculate the difference between the initial number of parking spots and the new number of parking spots, and express it as a percentage of the initial number of parking spots.
The initial number of parking spots is 1400, and the new number of parking spots after the library is built is 1400 - 63 = 1337.
The difference between the initial number of parking spots and the new number of parking spots is 1400 - 1337 = 63.
To express this difference as a percentage of the initial number of parking spots, we divide the difference by the initial number and multiply by 100:
(63 / 1400) x 100 = 4.5%
Therefore, the percent decrease in the number of available parking spots is 4.5%.
To know more about percentage visit:
https://brainly.com/question/28269290
#SPJ9
12
1. Find a common denominator for 1/3 and 1/12 by dividing each whole into the same number of equal parts.
Answer: To find a common denominator for 1/3 and 1/12, we need to divide each whole into the same number of equal parts. The denominator of 1/3 represents three equal parts, so we can divide the whole into three parts. The denominator of 1/12 represents twelve equal parts, so we can divide the whole into twelve parts.
The smallest number of parts that both 3 and 12 divide into evenly is 12. So, we can represent 1/3 as 4/12 by dividing each of the three equal parts into four smaller equal parts. And we can represent 1/12 as 1/12 by dividing each of the twelve equal parts into one smaller equal part.
Therefore, a common denominator for 1/3 and 1/12 is 12, and we can rewrite the fractions as:
1/3 = 4/12
1/12 = 1/12
Step-by-step explanation:
A contestant draws a sequence of three cards. one question per card, and tries to answer the three questions. There are five cards with history questions, six cards with literature questions, and seven cards with science questions. Find the probability of each or the following. Round vour answers to four decimal places..
(a) the questions are mistory, hiterature, and science, in that order
(bi all three are literature questions
(c) the first is science, the second is history, and the third is science
(a) The probability of the questions being history, literature, and science in that order is 5/18 x 6/17 x 7/16, which is 0.04.
(b) The probability of all three questions being literature questions is 6/18 x 5/17 x 4/16, which is 0.024.
(c) The probability of the first question being science, the second history, and the third science is 7/18 x 5/17 x 7/16, which is 0.05.
What is probability?In playing cards, it can be used to predict the likelihood of a certain outcome or to make decisions based on the probability of certain events occurring.
(a) The probability of the questions being history, literature, and science in that order is 5/18 x 6/17 x 7/16, which is 0.04.
(b) The probability of all three questions being literature questions is 6/18 x 5/17 x 4/16, which is 0.024.
(c) The probability of the first question being science, the second history, and the third science is 7/18 x 5/17 x 7/16, which is 0.05.
The probabilities of each of these scenarios can be calculated by multiplying the probabilities of drawing each of the three cards in the desired order.
For the first scenario, the probability of drawing a history question is 5/18, the probability of drawing a literature question is 6/17 (since there is one fewer card), and the probability of drawing a science question is 7/16 (since there are two fewer cards).
Multiplying these together gives us the probability of the questions being history, literature, and science in that order, which is 0.0771.
For more questions related to cards
https://brainly.com/question/28714039
#SPJ1
which symbols are represented by a closed circle on a number line?
Answer:
A closed circle on a number line represents an inclusive boundary, meaning that the endpoint is included in the set of values being represented. For example, if a closed circle is placed at the number 2 on a number line, it means that 2 is included in the set of values being represented. In interval notation, this would be written as [2, ...).
Which of the following would a scale be used to measure?
the weight of a fish after it is caught
the length of a piece of wood for building a treehouse
the distance between two points on a trail
the volume of water a fish tank can hold
Answer:
a) The weight of a fish after it's caught
Suppose he got dilates the rectangle shown below with the center of dilation at 0,0 and a scale factor of 2, and then translates the figure 1 unit to the left. What will be the coordinates of the vertices of the similar figure that results
The vertices of the similar figure that results from the dilation and translation will be A'' = (2a - 1, 2b), B'' = (2c - 1, 2b), C'' = (2c - 1, 2d), and D'' = (2a - 1, 2d).
Assume that the rectangle's four vertices are A, B, C, and D, with the corresponding coordinates being (a, b), (c, b), (c, d), and (a, d).
First, enlarge the rectangle.
We must multiply the coordinates of each vertex by the scale factor of two in order to enlarge the rectangle. We can apply the following formulas because the centre of dilation is at (0, 0):
Old x-coordinate + 2 equals the new x-coordinate
Old y-coordinate + 2 times the new y-coordinate
Therefore, following dilation, the new coordinates for the vertices will be: A' = (2a, 2b)
B' = (2c, 2b)
C' = (2c, 2d)
D' = (2a, 2d)
Translate the Figure in Step 2
The x-coordinate of each vertex must be reduced by one in order to translate the figure one unit to the left. Therefore, following translation, the vertices' new coordinates will be: A' = (2a - 1, 2b)
B'' = (2c - 1, 2b)
C'' = (2c - 1, 2d)
D'' = (2a - 1, 2d)
As a result, A'' = (2a - 1, 2b), B'' = (2c - 1, 2b), C'' = (2c - 1, 2d), and D'' = (2c - 1, 2d) will be the vertices of the similar figure that comes from the dilation and translation. (2a - 1, 2d).
For such more question on vertices:
https://brainly.com/question/1217219
#SPJ11
The following question may be like this:
Suppose he got dilates the rectangle shown below with the center of dilation at 0,0 and a scale factor of 2, and then translates the figure 1 unit to the left. What will be the coordinates of the vertices of the similar figure that results
z varies directly as √√x and inversely as y. If: = 179 when x=25 and y= 7, find zifx = 64 and y = 4. (Round off your answer to the nearest hundredth.)
z=
We know that z varies directly as √√x and inversely as y, which can be written as:
z = k(√√x)/y
where k is the constant of proportionality.
To find the value of k, we can use the values given when x = 25 and y = 7:
179 = k(√√25)/7
179 = k(5/7)
k = (179*7)/5
k = 250.6
Now we can use this value of k to find z when x = 64 and y = 4:
z = 250.6(√√64)/4
z = 250.6(2)/4
z = 125.3
Therefore, z ≈ 125.3 when x = 64 and y = 4.
Paula wants to retire. She has an account that has $250,000. It is earning an APR of 5.63%. What is the monthly yield on the account for a 20-year period?
(Please round your answer to the nearest dollar.)
Paula's account will earn a total of $282,546.60 in interest over the next 20 years, in addition to her initial investment of $250,000.
The monthly yield on Paula's account can be calculated using the following formula:
Monthly Yield = (Account Balance x Annual Percentage Rate) ÷ (12 x 100)
Monthly Yield = (250,000 x 5.63) ÷ (12 x 100) = $1,177.29
So, Paula's account will earn a monthly yield of $1,177.29 for the next 20 years. To calculate the total amount earned over the 20-year period, we can multiply the monthly yield by the number of months in 20 years (i.e., 240):
Total Earnings = Monthly Yield x Number of Months
Total Earnings = $1,177.29 x 240
Total Earnings = $282,546.60
To learn more about account follow the link: https://brainly.com/question/30718097
#SPJ1
A student scored 98, 94, 96, and 88 points out of 100 on the last 4 science tests. What score must the student score on the fifth test to have an average of at least 94 points?
The student needs to score 94 in 5th to get an average of 94 points.
Average:
The term "average" generally refers to the arithmetic mean, which is a measure of central tendency calculated by adding up all the values in a dataset and then dividing by the total number of values.
Hence the formula used to calculate the average is
Average = [ Sum of observations]/ No of observations
Here we have
A student scored 98, 94, 96, and 88 points out of 100 on the last 4 tests.
Here we need to at what score the average will be 94
Let x be the score the student got on 5 th test and the average is 94
Using the formula,
Average of the 5 test scores = [ 98 + 94 + 96 + 88 + x ]/ 5
As we assumed the average is 94
=> [ 98 + 94 + 96 + 88 + x ]/ 5 = 94
=> 98 + 94 + 96 + 88 + x = 470
=> 376 + x = 470
=> x = 94
Therefore,
The student needs to score 94 in 5th to get an average of 94 points.
Learn more about Average at
https://brainly.com/question/14282881
#SPJ1
unit 3 homework 7 point slope form: Need answers for front and back
the equation of the line that passes through the 7 points (1, 3), (2, 5),
(3, 7), (4, 9), (5, 11), (6, 13), and (7, 15) is y = 2x + 1.
The point-slope form of a linear equation is a way to write the equation of a line when you have a known point on the line and the slope of the line. The point-slope form is written as:
[tex]y - y_{1} = m(x - x_{1} )[/tex]
where m is the slope of the line, and (x1, y1) is the known point on the line.
The 7-point slope form is a variation of the point-slope form that requires knowing 7 points on the line, rather than just one. It is written as:
[tex](y - y_{1} ) = ((y_{2} - y_{1} ) / (x_{2} - x_{1} ))(x - x_{1} )[/tex]
where[tex](x_{1} , y_{1} ) and (x_{2} , y_{2} )[/tex] are two points on the line with known coordinates, and m is the slope of the line, which can be calculated using the two points.
To use the 7-point slope form to write the equation of a line, you need to know the coordinates of 7 points that lie on the line. Once you have these coordinates, you can choose any two of them to use as [tex](x1, y1) and (x2, y2)[/tex] in the formula, and then solve for the slope m. Once you have the slope, you can plug in the coordinates of any one of the 7 points into the 7-point slope form to find the equation of the line.
For example, let's say we have the following 7 points on a line: (1, 3), (2, 5), (3, 7), (4, 9), (5, 11), (6, 13), and (7, 15).
We can choose any two of these points to use as[tex](x_{1} , y_{1} ) and (x_{2} , y_{2} )[/tex] in the 7-point slope form. Let's choose (1, 3) and (2, 5).
The slope m can be calculated as:
[tex]m = (y_{2} - y_{1} ) / (x_{2} - x_{1} )[/tex]
m = (5 - 3) / (2 - 1)
m = 2
Now we can plug in the values of[tex](x_{1} , y_{1} )[/tex] , m, and x into the 7-point slope form to get the equation of the line:
[tex](y_{2} - y_{1} ) =m (x_{2} - x_{1} )[/tex]
(y - 3) = 2(x - 1)
y - 3 = 2x - 2
y = 2x + 1
So the equation of the line that passes through the 7 points (1, 3), (2, 5), (3, 7), (4, 9), (5, 11), (6, 13), and (7, 15) is y = 2x + 1.
In summary, the 7-point slope form is a variation of the point-slope form that requires knowing the coordinates of 7 points on a line. Once you have these coordinates, you can use the 7-point slope form to find the equation of the line.
To know more about equation of the line click here:
brainly.com/question/21511618
#SPJ1
Question 9
Use algebra to show that 4.57 (5 and 7 recurring) equal 4 and 19/33
o show that 4.57 (5 and 7 recurring) is equal to 4 and 19/33, we can use algebraic equations. First, let x = 4.57 (5 and 7 recurring), then we multiply both sides by 100 to get 100x = 457.5757... Next, we subtract x from 100x to get 99x = 453. Thus, x = 453/99. We can simplify this fraction by dividing both the numerator and denominator by 3, giving us 151/33. Finally, we can write 151/33 as a mixed number, which is 4 and 19/33. Therefore, we have shown that 4.57 (5 and 7 recurring) is equal to 4 and 19/33 using algebraic equations.