Answer:
Step-by-step explanation:
7. Jane was shopping for oranges, which were listed $0.75 each. She brought seven the discount, she was charged $4.30 before tax. What was the percent discount on each oranges to the checkout lane, where she learned that there was a sale on oranges. With orange?
The discount on each orange is 81.3%
What is discount?The discount equals the difference between the price paid for and it's par value. Discount is a kind of reduction or deduction in the cost price of a product.
A sales discount is a reduced price offered by a business on a product or service.
The total price for the oranges is;
0.75 × 7 = $5.25
She paid $ 4.30 for the oranges, this means that the discount = 5.25-4.30 = $0.95
Therefore the percentage discount on all the oranges = 0.95/5.25 × 100
= 18.1%
by discount each orange = 4.30/7 =$ 0.61
Therefore the discount on each orange = 0.61/0.75 ×100 = 81.3 %
Therefore the discount on each orange is 81.3%
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a toy manufacturer needs a piece of plastic in the shape of a right triangle with one leg 5 cm longer than the other and the hypotenuse 10 cm longer than the shorter leg. what is the perimeter of the triangle
The triangle's perimeter is roughly 25.29 cm.
In arithmetic, what is perimeter?The area around a form's edge is known as its perimeter. The perimeter of various forms can be calculated by summing the lengths of their sides.
Let's call the right triangle's shorter leg "x" for short.
The longer leg is then 5 cm longer than x, or x + 5, according to the situation.
The hypotenuse measures x + 10 cm longer than x.
By the Pythagorean theorem, we know that:
x² + (x+5)² = (x+10)²
Expanding and simplifying this equation gives:
2x² + 10x - 75 = 0
Dividing both sides by 2 gives:
x² + 5x - 37.5 = 0
We can find the value of x by using the quadratic formula:
x = (-5 ± sqrt(5² - 4(1)(-37.5))) / 2
x = (-5 ± sqrt(175)) / 2
x ≈ -8.68 or x ≈ 3.43
Since x represents a length, we must choose the positive solution x = 3.43 cm.
Therefore, the shorter leg of the triangle is 3.43 cm, the longer leg is 8.43 cm (3.43 + 5), and the hypotenuse is 13.43 cm (3.43 + 10). The perimeter of the triangle is the sum of the three sides, which is:
3.43 + 8.43 + 13.43 = 25.29 cm
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128 Sa se afle suma dintre produsul numerelor 45 250 şi 98 numer 100 000 şi 89 756.
the table shows the rate at which justin can make widgets. how many widgets can justin make in 36 minutes?
The number of widgets that Justin can make in 36 minutes is given as follows:
y = 36k.
In which the constant k is the number of widgets that can be made per minute, and is obtained dividing a value of y by it's respective value of x from the table.
What is a proportional relationship?A proportional relationship is defined as follows:
y = kx.
In which k is the constant of proportionality.
The variables for this problem are given as follows:
Input x: number of minutes.Output y: number of widgets.The constant is obtained as follows:
k = y/x.
For a time of 36 minutes, we have that x = 36, hence the number of widgets is given as follows:
y = 36k.
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Trapezoid WXYZ is rotated about its center and then translated down and to the right to produce trapezoid h j KL the side WZ is 7 cm WX is 5 cm y z is 5 cm and XY is 9 cm how long is side LH
The length of side LH is given as follows:
LH = 7 cm.
What is a translation?A translation happens when either a figure or a function are moved horizontally or vertically.
This is relevant because the side lengths remain constant.
The equivalent side to side LH is given as follows:
WZ = 7 cm.
Hence the length of side LH is given as follows:
LH = 7 cm.
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(a) The perimeter of a rectangular parking lot is 330 m.
If the length of the parking lot is 92 m, what is its width?
Answer: Width = 73 m
Step-by-step explanation:
Perimeter = Length(2) + Width(2)
330 - (92 x 2)
330 - 184 = 146
146 = Width of 2 sides
146/2 = 73 m
Can anyone help me solve this? Thank you!
Your friend sings every Saturday night at your favorite bar in San Diego. During his show, people show up at the rate of 1 person every minute.
a) What is the probability that on a random minute, at least 3 people show up?
b) What is the probability that he will have to wait at least 3 minutes for the next person to show up?
c) If he has already waited for 1 minute for the next person to show up, what is the probability that he will have to wait at least 3 more minutes for the next person to show up?
a) The probability that on a random minute, at least 3 people show up is 0.080.
b) The probability that he will have to wait at least 3 minutes for the next person to show up is 1 - (5/2e) .
c) The probability that he will have to wait at least 3 more minutes for the next person to show up is 2/e.
What is Poisson Probability?A probability distribution called the Poisson distribution is used to indicate how frequently an event is likely to happen over a given timeframe.
Given:
a) Let X be the number of people who show up during a random minute.
Then X follows a Poisson distribution with parameter λ = 1.
The probability of at least 3 people showing up in a random minute is:
P(X ≥ 3) = 1 - P(X < 3)
= 1 - (P(X = 0) + P(X = 1) + P(X = 2))
We can use the Poisson probability mass function to find P(X = k) for k = 0, 1, 2:
P(X = k) = ([tex]e^{-\lambda[/tex]) x ([tex]\lambda^k[/tex]) / k!
Plugging in λ = 1, we get:
P(X = 0) = [tex]e^{-1[/tex] / 0! = 1/e
P(X = 1) = [tex]e^{-1[/tex] x 1 / 1! = 1/e
P(X = 2) = [tex]e^{-1[/tex] x 1 / 2! = 1/2e
So, the probability of at least 3 people showing up in a random minute is:
= 1 - (P(X = 0) + P(X = 1) + P(X = 2))
= 1 - (1/e + 1/e + 1/2e)
= 1 - (2/e + 1/2e)
= 1 - (5/2e)
= 0.080
b) The probability of having to wait at least 3 minutes for the next person to show up
= 1 - P(X <= 2)
= 1 - (5/2e)
c) Now,
P(X ≤ 1)
= P(X = 0) + P(X = 1)
= (1/e) + (1/e)
= 2/e
So, the probability of having to wait at least 3 more minutes for the next person to show up
= 1 - (2/e)
= 1 - P(X <= 1).
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sum of 2nd term of an infinite geometric series is -1/2 and the third term is 1/4 find the sum of series
Answer:
2
Step-by-step explanation:
1 plus 1 due to the characterisation of the number 1 increasing by 1 gives you 2
HelpThe ratio of the perimeters of two similar quadrilaterals is 2:4. What is the ratio of their areas? PLLLLLLLLLLSSSSSSss WILL GIVE 20 POINTS EASY
a.1:2
b. 4.8
c. 2:4
d. 4:16
e. 5:3
The below area rate can also be further answered as 14, since the supplied border rate can be further answered as 12. Their areas are compared 4/16.
What's meant by rate?
A rate in calculation displays how numerous times one number is contained in another. The rate of oranges to failures, for case, is eight to six if there are eight oranges and six failures in a coliseum of fruit. The proportions of oranges to the overall quantum of fruit are 814 for oranges and 68 for failures, independently. An equation in which two rates are made equal is known as a chance. As an illustration, you could express the rate as 1 3 if there's 1 joe and 3 girls( for every one boy there are 3 girls)Areas If the scale factor of the sides of two analogous polygons is m/ n
also the rate of the areas is (m/n)^2.
Area of analogous Polygons Theorem). Because area is a two- dimensional volume, you square the rate.
It's given that, the rate of peripheries of two analogous quadrilateral is 2 4
now,
to find the rate of area, we can take two quadrilaterals, say square.
Square ABCD of side 2 units and Square PQRS of side 4 units.
now rate of areas,
[tex]=\frac{area \ of\ square\ ABCD }{area \ of\ square\ PQRS }[/tex]
[tex]=\frac{2 \times 2}{4 \times 4}[/tex]
= 4/16
= 1/4
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A credit car company charges 7% simple
interest. What is the total interest on a $1,900
loan at the end of the two years?
Answer: 266
Step-by-step explanation:
I = prt
p= 1900
r=.07
t=2
1900x.07x2=266
Please help fast!! Which of the following equations represents a linear function? Please show the steps of the answer! Thank you
Find the remaining trigonometric functions of 0 if
17
8
CSC 0 =
-
and cos > 0. Answer exactly.
Answer:
**DUE TOMORROW, NEED ANSWER ASAP**
NASA has asked you to evaluate a number of proposals for telescopes. These proposals include information about where the telescope would be built and what wavelengths it intends to observe at. Based only on these factors, evaluate whether NASA should consider funding each proposal. Justify your recommendations. (Some telescopes may have more than one "correct" answer depending on how you justify it).
a.) An ultraviolet telescope in space
b.) An optical telescope in a remote location in Michigan's upper peninsula
c.) A radio telescope in the Mojave desert in Arizona
d.) An x-ray telescope in the Andes mountains in Chile
e.) An optical telescope in space
Step-by-step explanation:
In right triangle ABC, m∠A=90 ∘ , cos B=x+0.26, and sin C=3x+0.14. Solve for x.
In right triangle ABC, the value of x is equal to 0.06.
What is a right angle?In Mathematics, a right angle can be defined as a type of angle that is formed in a triangle by the intersection of two (2) straight lines at 90 degrees. This ultimately implies that, a right angled triangle has a measure of 90 degrees.
Since the angle formed by side A is a right triangle, we have the following complementary angles;
C + B = 90
sin(C) = cos(B)
x + 0.26 = 3x + 0.14
3x - x = 0.26 - 0.14
2x = 0.12
x = 0.12/2
x = 0.06
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Find the circumference of a circle with a diameter of 8 inches
Answer:
B
Step-by-step explanation:
c=d*π
c=8*π
c=25.1 inches
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Help me with this quadratic functions graph
The graph of the quadratic function is given below.
What are Quadratic Functions?Quadratic functions are polynomial functions consisting of variables and exponents and the degree of the variable is 2.
The general form of a quadratic function is f(x) = ax² + b x + c.
Given is a quadratic function.
y = 3x² + 1
We know that graph of a quadratic function is a parabola.
Since the leading coefficient is +3, positive. So the graph opens upward.
Vertex = (-b/2a, f(-b/2a))
-b/2a = -0/(2 × 3) = 0
f(-b/2a) = (3 × 0) + 1 = 1
(0, 1) is the vertex.
x = 1, then y = 3 + 1 = 4
x = -1, then y = 3 + 1 = 4
x = 2, then y = 12 + 1 = 13
x = -2, then y = 12 + 1 = 13
x = 3, then y = 27 + 1 = 28
x = -3, then y = 27 + 1 = 28
Some of the points are (-3, 28), (-2, 13), (-1, 4). (0, 1), (1, 4), (2, 13) and (3, 28).
Hence the graph through the given points is given below.
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"The scores X on a pretest for a college statistics course and the course grade Y were recorded for 10 students. The results are as follows: X ---- 75,81, 57, 79, 68, 93, 96, 84, 41, 89 Y ----- 2, 3, 1, 2, 1, 4, 4, 3, 1, 3 What might you conclude?"
A. There is absolutely no correlation between the scores and grades
given.
B. There is a very weak correlation between the scores and grades given.
C. There is a moderate correlation between the scores and grades.
D. There is a strong correlation between the scores and grades.
Answer:
Step-by-step explanation:
C. There is a moderate correlation between the scores and grades.
Based on the scatter plot and the calculated correlation coefficient, we can conclude that there is a moderate positive correlation between the pretest scores and the course grades. This means that as the pretest scores increase, the course grades tend to increase as well. However, the correlation is not extremely strong, so other factors may be affecting the course grades besides the pretest scores.
The correlation between two variables describes the relationship between them. The strength of the correlation can be classified into four categories: no correlation, weak correlation, moderate correlation, and strong correlation.
In this case, since the values of X and Y appear to have a moderate association, it might be concluded that there is a moderate correlation between the scores on the pretest and the course grade.
However, correlation does not imply causality, meaning that even if there is a correlation between two variables, it does not mean that one variable causes the other. Further analysis, such as regression analysis, is needed to determine the strength and direction of the relationship and to determine if there is a causal relationship.
3. Using the equation y = 3x - 5, what would the output be for an input of 2?
The output of the equation for input of 2 is 1.
What is equation?A mathematical definition of an equation is a claim that two expressions are equal when they are joined by the equals sign ("="). For illustration, 2x - 5 = 13.
Two expressions are combined in an equation using an equal symbol ("="). The "left-hand side" and "right-hand side" of the equation are the two expressions on either side of the equals sign. Typically, we consider an equation's right side to be zero.
The given equation is:
y = 3x - 5
Here, x is the input value and y is the output value.
Substituting input that is x = 2.
y = 3(2) - 5
y = 6 - 5
y = 1
Hence, the output of the equation for input of 2 is 1.
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Devaughn is 8 years older than Sydney. The sum of their ages is 94. What is Sydney's age?
Answer:
Step-by-step explanation:
S+8=D
S+D equals 94.
94/2= 45+2=47
47-8=39
Sydney is 39
Answer:
43
Step-by-step explanation:
94-8= 86
86/2= 43
43+8= 51
a:43
prove it :
51+43= 94
Question 2
Two fair six-sided dice are thrown. Let A be the event that the sum is 3. Let B be the event that the sum is 12.
Find P(AUB).
None of the answers listed is correct.
2/12
3/36
4/36
2/36
E1, E3, and E2, E3 are independent variables.
What is meant by independent variable?In statistical modelling, experimental sciences, and mathematical modelling, there are dependent and independent variables. Dependent variables are examined under the presumption or requirement that they are constrained by some rule or law to depend on the values of other variables. What it means to be an independent variable is exactly what it is. It is a variable that is independent of the other factors you are attempting to assess. Age is just one example of an independent variable.The independent variable is the underlying cause. Its value is independent of the other study factors. The dependent variable is the effect. The value of the independent variable depends on its modifications.[tex]$& \mathrm{P}\left(\mathrm{E}_1\right)=\frac{1}{6} \\[/tex]
[tex]$& \mathrm{P}\left(\mathrm{E}_2\right)=\frac{1}{6} \\[/tex]
[tex]$& \mathrm{P}\left(\mathrm{E}_3\right)=\frac{2+4+6+4+2}{36}=\frac{1}{2} \\[/tex]
[tex]$& \mathrm{P}\left(\mathrm{E}_2 \cap \mathrm{E}_3\right)=\frac{1}{2} \times \frac{1}{6}=\mathrm{P}\left(\mathrm{E}_2\right) \times \mathrm{P}\left(\mathrm{E}_3\right) \\[/tex]
Then,
[tex]$& \mathrm{P}\left(\mathrm{E}_1 \cap \mathrm{E}_3\right)=\frac{1}{2} \times \frac{1}{6}=\mathrm{P}\left(\mathrm{E}_1\right) \times \mathrm{P}\left(\mathrm{E}_3\right) \\[/tex]
[tex]$& \mathrm{P}\left(\mathrm{E}_1 \cap \mathrm{E}_2 \cap \mathrm{E}_3\right)=0 \\[/tex]
[tex]$& \mathrm{P}\left(\mathrm{E}_1\right) \mathrm{P}\left(\mathrm{E}_2\right) \mathrm{P}\left(\mathrm{E}_3\right) \equiv 0 \\[/tex]
Simplify,
[tex]$& \therefore \mathrm{P}\left(\mathrm{E}_1 \cap \mathrm{E}_2 \cap \mathrm{E}_3\right) \equiv \mathrm{P}\left(\mathrm{E}_1\right) \mathrm{P}\left(\mathrm{E}_2\right) \mathrm{P}\left(\mathrm{E}_3\right)[/tex]
E1, E3 are independent
E2, E3 are independent
The complete question is:
Let two fair six-faced dice A and B are thrown simultaneously. If E1 is the event that die A shows up four, E2 is the event that die B shows up two and E3 is the event that the sum of numbers on both dice is odd, then which of the following statements is NOT true?
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Identify the y- intercept of the graph below
b= -4
b=6
b=4
b= -10
what is the inequality shown
The inequality on the graph is written as:
-4 < x ≤ 5
What is the inequality shown on the number line?
Here we have an inequality graphed on a number line.
First, we can see that we have an open circle at x = -4 and then the line goes to the right.
That means that the value of x must be larger than -4, so we can start by writting:
-4 < x
Then we have a closed circle at x = 5.
That means that x can be smaller or equal to 5, then:
x ≤ 5
Then the inequality is:
-4 < x ≤ 5
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(9+w) (2w+3)=0
If there is more than one solution, please seperate with commas
100 points!!!!
An ordinary (fair) die is a cube with the numbers 1 through 6 on the sides (represented by painted spots). Imagine that such a die is rolled twice in succession
and that the face values of the two rolls are added together. This sum is recorded as the outcome of a single trial of a random experiment.
Compute the probability of each of the following events.
Event 4: The sum is greater than 6.
Event B: The sum is not divisible by 3 and not divisible by 6.
Round your answers to two decimal places.
There are 36 possible outcomes from rolling a die twice (or two dice once) and these result in sums from 2 to 12.
Possible ways to make a sum of 2: 1
Possible ways to make a sum of 3: 2
Possible ways to make a sum of 4: 3
Possible ways to make a sum of 5: 4
Possible ways to make a sum of 6: 5
Possible ways to make a sum of 7: 6
Possible ways to make a sum of 8: 5
Possible ways to make a sum of 9: 4
Possible ways to make a sum of 10: 3
Possible ways to make a sum of 11: 2
Possible ways to make a sum of 12: 1
This means there are 21 ways to make a sum greater than 6.
21/36 ≈ 58.33%
There are 24 ways to make sums that are not divisible by 3 and not divisible by 6. (Note that if a number isn't divisible by 3, it's also not divisible by 6, so that's a weird thing to include.)
24/36 ≈ 66.67%
tyrone runs 1 1/4 miles in 8 1/2 minutes how many miles can he run in 20 minutes
Answer:
2 [tex]\frac{16}{17}[/tex] miles
Step-by-step explanation:
[tex]\frac{miles}{minutes}[/tex] = [tex]\frac{miles}{minutes}[/tex]
[tex]\frac{1 1/4}{8 1/2}[/tex] = [tex]\frac{x}{20}[/tex]
1 [tex]\frac{1}{4}[/tex] is the same as [tex]\frac{4}{4}[/tex] + [tex]\frac{1}{4}[/tex] (1 = [tex]\frac{4}{4}[/tex] )
8 [tex]\frac{1}{2}[/tex] is the same as [tex]\frac{2}{2}[/tex] + [tex]\frac{2}{2}[/tex] + [tex]\frac{2}{2}[/tex] + [tex]\frac{2}{2}[/tex] + [tex]\frac{2}{2}[/tex] + [tex]\frac{2}{2}[/tex] + [tex]\frac{2}{2}[/tex] + [tex]\frac{2}{2}[/tex] + [tex]\frac{1}{2}[/tex] = [tex]\frac{17}{2}[/tex] (1 = [tex]\frac{2}{2}[/tex])
[tex]\frac{\frac{5}{4} }{\frac{17}{2} }[/tex] = [tex]\frac{x}{20}[/tex]
[tex]\frac{17}{2}[/tex] x = 20 multiply both sides by [tex]\frac{2}{17}[/tex]
[tex]\frac{2}{17}[/tex] [tex](\frac{17}{2})[/tex]x = [tex]\frac{2}{17}[/tex][tex](\frac{20}{1})[/tex]
x = [tex]\frac{40}{17}[/tex]
[tex]\frac{5}{4}[/tex] [tex](\frac{40}{17})[/tex] = x
[tex]\frac{50}{17}[/tex] or 2 [tex]\frac{16}{17}[/tex]
Help me with this question
The volume of the cylinder will be 666 cubic centimeters. Then the correct option is D.
What is the volume?Volume is a measurement of three-dimensional space that is utilized. It is frequently mathematically quantified using SI-derived units or different imperial or US traditional units. The concept of length is linked to the notion of capacity.
The radius and height of the cone and the cylinder are the same. Then the ratio of the volume of the cylinder to the volume of the cone is 3. Then we have
(Volume of the cylinder) / (Volume of the Cone) = 3
Volume of the cylinder / 222 = 3
Volume of the cylinder = 666 cubic cm
The volume of the cylinder will be 666 cubic centimeters. Then the correct option is D.
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7) Given the geometric sequence
9, 3, 1, 1/3, ...
What is the sum of the first 8 terms?
The sum of the first 8 terms is 13.5
What is the sum of the first 8 terms?From the question, we have the following parameters that can be used in our computation:
9, 3, 1, 1/3, ...
Using the above as a guide, we have the following:
First term, a = 9
Common ratio, r = 1/3
The sum of GP (of n terms) is calculated as
Sum = Sn = a(r^n - 1) / (r - 1)
substitute the known values in the above equation, so, we have the following representation
Sum = 9 * ((1/3)^8 - 1)/((1/3) - 1)
Evaluate
Sum = 13.5
Hence, the sum is 13.5
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Siri has decided to examine his checking account statements. Last month‘s account balance was $100 this month is 42. What is the percent of decrease in Pere’s account balance
Answer:
58% decrease
Step-by-step explanation:
The 2 triangles below are similar. Find the missing side. Use your notes to help you. In your answer, type out your proportion and the solution.
PLEASE HURRY !!
The length of side DF is 5 units.
Similar Triangles :If two figures possess the same shape but not necessarily the same size, they are considered to be similar. We may remark that all circles are similar as an example. Equilateral triangles and squares are similar to one another. Although similar figures need not be congruent, all congruent figures are similar.
Property 1:
Two triangles are similar if their respective sides have the same ratio and their corresponding angles are equal.
Property 2:
The corresponding angles of two similar triangles will have equal values . Equiangular triangles are what they are called.
Now by property 1,
The pairs of corresponding sides of similar traingles are proportional .
Therefore, in the given triangles,
[tex]\frac{BA}{ED} =\frac{AC}{DF}[/tex]
[tex]\frac{6}{3} =\frac{10}{x} \\\\x=5[/tex]
Hence, the value of x = 5 units.
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A business puchases a computer system for $3,000. The value of the system decreases at a rate of 15% per year. Write an exponentioal function to model this situation. Then determine how much the comoputer will be work after 3 years
Value of system after 'x' years = [tex]3000*(0.85)^x[/tex]
The value of the computer after 3 years is $1842.375
What is an exponential function?The formula for an exponential function is f(x) =[tex]a^x[/tex], where 'x' is variable and 'a' is a constant that serves as the function's base and must be bigger than 0. The transcendental number e, or roughly 2.71828, is the most often used exponential function basis.
Given that, computer system values at $3000 decrease at a rate of 15% each year.
If the value decreases by 15%, it means that the new value is 85% of the old value.
new value = old value * (85/100)
new value = old value * 0.85
value in 1st year = $3000
value after 1st year = $3000 * 0.85
value after 2nd year = $3000 * 0.85 * 0.85
value after nth year = $3000 * [tex]0.85^n[/tex]
Value of the system after 3 years = $3000 * [tex]0.85^3[/tex]
= $3000 * 0.614125
= $1842.375
Therefore, The value of the computer system after 3 years is $1842.375
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Examine the figure below, solve for a, round to the nearest whole number.
26 is the value of a from the given figure.
What is Trigonometry?Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.
We need to find the value of a from the figure.
∠D is 46 degrees.
AD is 28, AT is 37
CosD=Adjacent side/ Hypotenuse
Cos46=a/37
0.695=a/37
a=0.697×37
a=26
Hence, the value of a is 26
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