Quadrilateral ABCD is inscribed in this circle.
What is the measure of ∠A
do you agree? explain why or why not
A student concluded that the solution of the equation [tex]\sqrt{2x+1}+3 = 0[/tex] is x = 4. The conclusion is true.
What is a perfect square?Perfect squares are those integers whose square root is an integer.
Let x-a be the closest perfect square less than x,
and let x+b be the closest perfect square more than x, then we get x-a < x < x+b (no perfect square in between x-a and x+b, except possibly x itself).
Then, we get:
[tex]\sqrt{x-a} < \sqrt{x} < \sqrt{x+b}[/tex]
[tex]\sqrt{2x+1}+3 = 0\\\\\sqrt{2x+1}= -3[/tex]
by taking square on both sides we get
[tex](\sqrt{2x+1})^2 = (- 3)^2 \\\\2x+ 1 = 9[/tex]
when x = 4
2(4) + 1
= 9
Thus, the solution of the equation is 4.
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Write the standard equation of a circle that passes through (1, −6) with center (7, −2).
Help, what even is this?
Zack deposited $1,200 in a savings account that paid 7.75% simple
interest. What was the balance in his account at the beginning of the
third year?
a. $180
b. $270
c. $1,393.21
d. $1,470
HELPPPPP ASAP AND GET BRAINEST
Answer:
$1386.
Step-by-step explanation:
We have been given that Zack deposited $1,200 in a savings account that paid 7.75% simple interest. We are asked to find the balance in his account at the beginning of the third year.
The balance in the account at the beginning of the third year will be equal to balance in the account at the end of 2nd year.
We will use simple interest formula to solve our given problem.
[tex]A=P(1+rt)[/tex], where,
A = Amount after t years,
P = Principal amount,
r = Annual interest rate in decimal form,
t = Time in years.
Upon converting our given interest rate in decimal form we will get,
[tex]7.75\%=\frac{7.75}{100}=0.0775[/tex]
Upon substituting our given values in simple interest formula we will get,
[tex]A=\$1200(1+0.0775\cdot 2)[/tex]
[tex]A=\$1200(1+0.155)[/tex]
[tex]A=\$1200(1.155)[/tex]
[tex]A=\$1386[/tex]
Therefore, an amount of $1386 will be in Jack's account at the beginning of third year.
Use the equation you have written above determine the cost for each bracelet. Show the algebraic steps that it takes to find the answer. Provide your conclusion.
A drawer contains 9 black socks, 8 gray socks, and 7 blue socks. Without looking, you draw out a sock and then draw out a second sock without returning the first sock. What is the probability that the two socks you draw are the same color?
the public library has an approximate length of 1 x 10^5 millimeters and width of 8 x 10^4 millimeters. what is the area, in square milliters, of the public library?
a. 8 x 10^9 square millimeters
b. 9 x 10^9 square millimeters
c. 8 x 10^20 square millimeters
d. 9 x 10^20 square millimeters
Helen's Shop is 60 meters wide and 80 meters long. The parking lot in front of Helen's Shop is twice as long as it is wide and is 50 meters wide.What is the sum of the area of Helen's Shop and the parking lot?
Answer:
9,800
Step-by-step explanation:
Helen's Shop
60 m x 80 m = 4,800 m2
Parking Lot
Length = 2 × 50 m = 100 m
Area = 50 m × 100 m = 5,000 m2
Final Answer
4,800 m2 + 5,000 m2 = 9,800 m2
Don't want any answers, just how to solve, step by step. please :)
HELP FAST PLEASE!!
Martin simplified the composed function f(x)=sin(arctan x). His work is shown below.
Step 1: f(x)=sinA, where A=arctan x and x = tanA
Step 2: tanA= opp/adj=x/1
Step 3: hypotenuse= square root of 1^2-x^2= square root of 1-x^2
Step 4: sinA=opp/hyp=x/squareroot 1-x^2
In which step did Martin make is first error?
Answer:
1. B f(x)=4sinx/2-3
2. B, F, G (c=-1. a=2, b=2)
3. c. H(t)=-2.4cos(0.017t)+12
4. A, B, E, F (y=cos^-1x, y=cot^-1x, y=sin^-1x, y=tan^-1x)
5. C y=sin^-1x
6. C 48.7
7. C f(g(x))=sec(sinx) domain: all real #
8. C step 3
Step-by-step explanation:
A doctor's office mails a survey to each of its patients. The results of the survey are based off of the total number of patients.
Which of the following could affect the outcome of their surveys?
A.The results could be flawed because the sample population was too large.
B.The results could be flawed due to a wide range of topics in the questions.
C.The survey is biased because they are only asking patients.
D.The results could be flawed due to non-response of patients.
Answer:
The results could be flawed due to non-response of patients.
Step-by-step explanation:
A doctor's office mails a survey to each of its patients. The results of the survey are based off of the total number of patients. The office is mailing the patients. It is very likely that patients do not read out the survey mail. So, they cannot respond to the survey or a very few patients will respond back. So, option 4th is the correct. The results could be flawed due to non-response of patients.
helpppppppppppppppppppppppppp
dolores is selling cucumbers from her backyard garden her garden is 48 square feet in total and she can grow 1 cucumber every 72 square inches if she can successfully grow cucumbers in every square foot of the garden and sell them for $2.50 each how much will she make?
Final answer:
Dolores will make $240 by growing and selling all the cucumbers possible in her 48 square feet garden, with each cucumber selling for $2.50.
Explanation:
To calculate the amount of money Dolores will make from selling cucumbers, we need to determine how many cucumbers she can grow in her 48 square feet garden, and then multiply that number by the selling price of $2.50 per cucumber. First, we'll convert the area of her garden into square inches since we know a cucumber takes up 72 square inches of space:
48 square feet × 144 square inches per square foot = 6,912 square inches.
Next, we divide this by the amount of space needed for one cucumber to find the total number of cucumbers she can grow:
6,912 square inches ÷ 72 square inches per cucumber = 96 cucumbers.
Finally, we'll multiply the number of cucumbers by the selling price:
96 cucumbers × $2.50 per cucumber = $240.
Therefore, Dolores will make $240 by selling all the cucumbers she can grow in her garden.
The area of the rectangle shown is given by the function A(x) = 2x2 - 5x. If the width of the rectangle is 13, what is the area
The area of the rectangle is 273 square units.
The task is to find the area of a rectangle where the width of the rectangle is given as 13, and the area as a function of x is provided as A(x) = 2x² - 5x.
To find the area, we need the value of x that corresponds to the width. Since the width is 13, we set x as 13 and substitute it into the area function.
A(13) = 2(13)² - 5(13) = 2(169) - 65 = 338 - 65 = 273 square units.
Thus, the area of the rectangle is 273 square units.
Consider a function that describes how a particular car’s gas mileage depends on its speed. What would be an appropriate domain for this function?
o to 100 miles per hour
Consider this system of linear equations:
y = –3x + 5
y = mx + b
Which values of m and b will create a system of linear equations with no solution?
m = –3 and b = –3
m = 5 and b = –3
m = 3 and b = 5
m = 5 and b = –3
Engenuity answer is m= -3 and B= -3
m = –3 and b = –3 or A
What is the cricket’s hang time (amount of time the cricket is airborne)? Round to the nearest thousandth h(t) = –16t2 + 14t
The hang out time is 0.875 sec.
What is Quadratic equation?An algebraic equation of the second degree in x is a quadratic equation. The quadratic equation is written as ax² + bx + c = 0, where x is the variable, a and b are the coefficients, and c is the constant term. First, there must be a term other than zero in the coefficient of x²(a>0) for an equation to be a quadratic equation. The x² term is written first when constructing a quadratic equation in standard form, then the x term, and finally the constant term. The numerical values of a, b, and c are often expressed as integral values rather than fractions or decimals.
Given Equation:
h(t) = –16t² + 14t
For the Hangout time we can consider the function h(t)=0
0 = –16t² + 14t
16t² = 14t
16t= 14
t= 14/16
t= 0.875 sec
Hence, the hang out time is 0.875 sec.
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help help quickly!!!!!
You and a friend tutor for a total of 12 hours. Use the tape diagram to find how many hours you tutor.
I teach 9 and 6 hours respectively
Left diagram:
In this diagram you show three quarters of the hours.
We have then:
(3/4) * (12) = 9
Answer:
You teach 9 hours.
Right diagram:
In this diagram you teach half of the hours.
We have then:
(2/4) * (12) = 6
Answer:
You teach 6 hours
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You tutored for 6 hours, your friend tutored for 6 hours as well.
Image:
You and a friend listen for a total of 2 hours.
You
Friend
You
The image shows a tape diagram with two sections labeled "You" and "Friend". The "You" section is longer than the "Friend" section, indicating that you tutored for more hours than your friend.
To find the number of hours that you tutored, we can divide the total number of hours tutored (12 hours) by the number of sections in the tape diagram (2).
Number of hours you tutored = 12 hours / 2 sections = 6 hours
Therefore, you tutored for 6 hours.
Explanation of tape diagrams:
A tape diagram is a visual representation of a mathematical equation. It is a horizontal bar that is divided into sections, with each section representing a different quantity. The length of each section represents the size of the quantity it represents.
Tape diagrams can be used to solve a variety of mathematical problems, including addition, subtraction, multiplication, and division problems. They are especially useful for solving problems that involve multiple quantities, as they can help to visualize the relationships between the different quantities.
In this case, the tape diagram is used to solve the following problem:
> You and a friend tutor for a total of 12 hours. Use the tape diagram to find how many hours you tutor.
The tape diagram is divided into two sections, one for you and one for your friend. The length of each section represents the number of hours that each person tutored. Since you tutored for more hours than your friend, the "You" section is longer than the "Friend" section.
To find the number of hours that you tutored, we can divide the total number of hours tutored (12 hours) by the number of sections in the tape diagram (2). This gives us the number of hours that you tutored, which is 6 hours.
Therefore, the answer to the question is "You tutored for 6 hours."
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This figure shows circle O with diameter QS . mRSQ=290∘ What is the measure of ∠ROQ ? Enter your answer in the box. °
Answer: 70 I just took the test!
Step-by-step explanation:
Look at the isosceles trapezoid below.
Answer:
Not enough information to decideStep-by-step explanation:
If m were the midline, its length would be 32/2 = 16 cm. However, there is nothing in the figure to indicate that is the case. There is not enough information to decide.
given the conversion factor 3.28 ft/ 1m which cube above has the larger surface area
cube A is 7’ cube b is 2m
Final answer:
After converting Cube B's side length to feet, Cube A has a surface area of 294 ft² while Cube B has a surface area of 258.2016 ft², making Cube A the one with the larger surface area.
Explanation:
To determine which cube has the larger surface area, we must work with a common unit of measurement for both cubes. We'll convert Cube B from meters to feet using the conversion factor 3.28 ft/1m.
For Cube A with a side length of 7 feet, the surface area (SA) is calculated by the formula SA = 6 × s² (where 's' is the side length).
SA (Cube A) = 6 × (7 ft)² = 6 × 49 ft² = 294 ft².
For Cube B with a side length of 2 meters, we first convert meters to feet: 2 m × 3.28 ft/m = 6.56 ft. So, the surface area of Cube B becomes:
SA (Cube B) = 6 × (6.56 ft)² = 6 × 43.0336 ft² = 258.2016 ft².
Between Cube A and Cube B, Cube A has the larger surface area.
Classify the model as exponential growth or exponential decay. Identify the growth or decay factor AND the percent of increase per time period.
y=10(0.2)^t
Plz help!
is y=0.8(2.1)x exponential growth or exponential decay
Which rule describes the translation? T–3, –2(x, y) T–3, 2(x, y) T3, –2(x, y) T3, 2(x, y)
SOMEONE PLEASE ANSWER PLEASE
The rule which describes the translation of the figure is T–3, –2(x, y).
The translation T(x, y) → (x – h, y – k) moves a point (x, y) to a new point (x – h, y – k).
T–3, –2(x, y) moves the point 3 units to the right and 2 units down.
T–3, 2(x, y) moves the point 3 units to the right and 2 units up.
T3, –2(x, y) moves the point 3 units to the left and 2 units down.
T3, 2(x, y) moves the point 3 units to the left and 2 units up.
So the answer is T–3, –2(x, y).
Here is a table that shows the effect of each translation on the point (3, 4):
Original point | Translation | New point
(3, 4) | T–3, –2(x, y) | (0, 2)
(3, 4) | T–3, 2(x, y) | (6, 6)
(3, 4) | T3, –2(x, y) | (6, 2)
(3, 4) | T3, 2(x, y) | (0, 6)
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Given: ABCD is a parallelogram.
Prove: ∠A and ∠D are supplementary.
By the definition of a parallelogram, AB∥DC. AD is a transversal between these sides, so ∠A and ∠D are ? angles. Because AB and DC are ? , the same-side interior angles must be ? by the same-side interior angles theorem. Therefore, ∠A and ∠D are supplementary.
A parallelogram is a quadrilateral with four sides. The opposite sides of the parallelogram are equal and parallel.
In the given figure, AB||DC. AD is the transversal, such that:
∠A + ∠D = 180-degrees.
The parallelogram is a quadrilateral with equal and parallel sides, such that the interior angles present on the same side of the transversal are supplementary. The sum of supplementary angles is equal to 180-degrees. From the theorem of same-side interior angles, the supplementary angles present on the parallel lines must be intersected by a transversal. Since, in the parallelogram ABCD, AD is the transversal. From the property of transversal, the interior angles on the same side of the transversal are supplementary.Therefore, ∠A and ∠D are supplementary and their sum is equivalent to 180-degrees.
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Suppose a life insurance company sells a $250,000 one-year term life insurance policy to a 20-year-old female for $320. The probability that the female survives the year is 0.999647. Compute and interpret the expected value of this policy to the insurance company.
Which expression is equivalent to the expression below?
Answer:
C. [tex]\dfrac{1}{(m-4)(m-3)}[/tex]
Step-by-step explanation:
First note that
[tex]m^2-16=(m+4)(m-4) \quad \text {and} \quad m^2-9=(m+3)(m-3)[/tex]
On the other hand, the expression from the question is equivalent to
[tex]\dfrac{m+3}{m^2-16} \cdot \dfrac{m+4}{m^2-9}=\dfrac{m+3}{(m+4)(m-4)}\dfrac{m+4}{(m+3)(m-3)}[/tex]
we cancel the equal terms in the numerator and the denominator and finally we get that our expression is equivalent to
[tex]\dfrac{1}{(m-4)(m-3)}[/tex]
Elio makes candles that are 14 cm tall. Each candle burns 8 hours before going out. He is wondering how many hours a 21 cm tall candle can burn for. He assumes that the relationship between the height of a candle and number of hours it burns (h) is proportional. How long can a 21 cm tall candle burn for?