Solve 4r2 – 7 = 29.
a. +-6
b. +-3
c. +-4
d. +-5

Answers

Answer 1
4r^2-7=29
+7 both sides
4r^2=36
÷4 both sides
r^2=9
square root both sides
r=+/-3 B

Related Questions

Which is the graph of f(x)=2(3)^x

Answers

Answer-

The first graph represents [tex]f(x)=2(3)^x[/tex]

Solution-

The given function is,

[tex]f(x)=2(3)^x[/tex]

Putting x = 1,

[tex]f(x)=2(3)^1=2(3)=6[/tex]

So, the point (x, f(x)) i.e (1, 6) must satisfy or lie on the curve of the function.

Only in case of the first graph, the point (1, 6) lies on the curve.

Therefore, the first graph represents the function [tex]f(x)=2(3)^x[/tex] correctly.

Answer: the first answer is correct

OQ is a diagonal of quadrilateral NOPQ. If NO=PQ, NQO=7y-37, and POQ=2y+93, find POQ such that NOPQ is a parallelogram. A.26° B.63° C.97° D.145°

Answers

This is the concept of geometry, given that NOPQ is a parallelogram, then it implies that NQO=POQ
hence:
7y-37=2y+93
collecting the like terms we get:
7y-2y=93+37
5y=130
thus;
y=130/5
y=26
thus the value of POQ will be:
POQ=2y+93
=2*26+93
=145
the answer is D. 145°

Describe the transformation f(x) = √x + 1 − 5 in words. The parent function f(x) = √x has been shifted 1 unit and 5 units.

Answers

Answer:

We are given,

The transformed function is [tex]f(x)=\sqrt{x+1}-5[/tex].

So, we can see that,

The parent function is [tex]f(x)=\sqrt{x}[/tex].

Then, we have,

The parent function is translated 1 units to the left to give [tex]\sqrt{x+1}[/tex].

Then, it is translated 5 units downwards to give the function  [tex]\sqrt{x+1}-5[/tex].

Hence, we have,

The parent function [tex]f(x)=\sqrt{x}[/tex] is translated 1 unit to the left and 5 units down.

The parent function f(x) = √x has been shifted 1 unit left and 5 units down

The parent function of a square root function is represented as:

[tex]f(x) = \sqrt x[/tex]

When the function is shifted 1 unit left, we have the following equation

[tex]f(x) = \sqrt {x + 1}[/tex]

When the function is shifted 5 units down, we have the following equation

[tex]f(x) = \sqrt {x + 1} - 5[/tex]

Hence, the parent function f(x) = √x has been shifted 1 unit left and 5 units down

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The integral represents the volume of a solid. describe the solid. π π 0 sin(x) dx

Answers

Is that all the question says ??

The following table shows the number of hours some students in two universities spend reading each week: School A 7 2 3 10 17 14 10 22 2 School B 9 10 16 18 20 15 17 18 14 Part A: Create a five-number summary and calculate the interquartile range for the two sets of data. (6 points) Part B: Are the box plots symmetric? Justify your answer. (4 points)

Answers

The value of [tex] Q_{1} [/tex], [tex] Q_{2} [/tex], and [tex] Q_{3} [/tex] for each schools is given in the first picture below. 

[tex]Q_{1} [/tex] is the lower quartile
[tex] Q_{2} [/tex] is the median
[tex]Q_{3} [/tex] is the upper quartile

School A:
Minimum value is 2
Maximum value is 22
The lower quartile is 2.5
The median is 10
The upper quartile is 15.5

School B:
Minimum value is 9
Maximum value is 20
The lower quartile is 12
The median is 16
The upper quartile is 18

The box plot for each school is shown in the second picture

Box plot for school A isn't symmetrical. The data tails on the right
Box plot for school B isn't symmetrical. The data tails on the left


Answer:

that persons work is correct im pretty sure

Step-by-step explanation:

There are 21 different coffee flavours at the cafe. oddly, each student in my 8 am class has a favourite flavour there. there are just enough students in the class so you can be absolutely sure that 7 students all have the same favourite. how many students are there in the class?

Answers

You would just have to do 7 times 21 because if every 7 students like the same flavor and there are 21 different flavors, then there should be 147 students in the class. 

Amersham station is the highest station in the London Tube at 147 meter above sea level. Waterloo station is the lowest station at 21 meters below sea level. What is the height difference?

Answers

Final answer:

The height difference between Amersham station (147 meters above sea level) and Waterloo station (21 meters below sea level) is 168 meters.

Explanation:

To find the height difference between Amersham station, which is the highest station in the London Tube at 147 meters above sea level, and Waterloo station, the lowest at 21 meters below sea level, we simply add the two values together, treating the below sea level as a negative altitude.

147 meters (Amersham altitude above sea level) + (-21 meters) (Waterloo altitude below sea level) = 168 meters.

Therefore, the height difference between Amersham and Waterloo stations is 168 meters.

Which of the following functions illustrates a change in amplitude?

A. y = 3cos4x
B. y = 1+sinx
C. y = -2-cos(x - pi)
D. y = tan2x

Answers

Answer:

Correct option is A.          

Step-by-step explanation:

Given the following functions we have to choose the option which illustrates a change in amplitude.

Multiplying a sine or cosine function by a constant changes the graph of the parent function i.e results in change in the amplitude of function. Amplitude is the measure of distance from the sinusoidal axis to the maximum or the minimum.

Option A:  y = 3cos4x

The parent function is f(x) = cos x.

The amplitude of function changes from 1 to 3.

Option B:  y = 1+sinx

The parent function is f(x) = sin x

The amplitude remains same i.e 1

Option C: y = -2-cos(x - pi)

Here also remains same.

Option D: y = tan 2x

The tangent function does not have an amplitude because it has no maximum or minimum value.

Hence, correct option is A.

Answer:

y= 3cos4x

Step-by-step explanation:

Helen uses 3/4 cup of oil and 1/3 cup of vinegar to make salad dressing. Which is closest to how many times 3/4 is as great as 1/3?
3
2
3/2
1/2
PLEASE ONLY ANSWER IF YOU KNOW FOR SURE!! :)

Answers

3/4 is greater than 1/3

4 x 3 = 12 ( so we shall choose 12 as our new denominator)

1/3 = 4/12  ( multiply 4 top and bottom to get the same denominator)
3/4 = 9/12  ( multiply 3 top and bottom to get the same denominator) 

3/4 is greater than 1/3 by 5/12

hope this helps

in a boutique the ratio of pink flowers to blue flowers is 3 to 6 if there are 72 pink flowers how many flowers are there in the bouquet all together?

Answers

[tex]\bf \cfrac{pink}{blue}\qquad \cfrac{3}{6}=\cfrac{72}{b}\implies b=\cfrac{72\cdot 6}{3}\implies \boxed{b=144} \\\\\\ \textit{so, there are a total of }72 + 144[/tex]

Two women start at the same point. they walk in opposite directions for 3 meters, then turn right and walk another 4 meters. how far apart are they?

Answers

The total distance between the two women would simply be the sum of the hypotenuse formed by the triangular path they created.

For each women:

c^2  = a^2 + b^2

c^2 = 3^2 + 4^2

c^2 = 9 + 16

c^2 = 25

c = 5 m

Therefore the distance between the two is:

distance between the two women = 2 * c

distance between the two women = 10 m

a scalene triangle has symmetry with respect to a line containing a median of the triangle . true or false

Answers

Hi! Let me help you!
Before I answer your question, I should first introduce you to triangles! There ae three triangles: Isosceles triangle, equilateral triangle, and scalene triangle. If I remember it right, isosceles triangles have at least one line of symmetry; an equilater triangle must have three lines of symmetry; a scalene triangle HAS NO line of symmetry.

Now, to answer your question: the answer is FALSE. Scalene triangles have no line of symmetry.

I hope this helped you!

Answer:

False it never will

Step-by-step explanation:

Got it right on my test.

What is the solution to 7(a-1)=7

Answers

I got a=2 after using distributive property
7(a-1)=7
7a-7=7
Add 7 on both sides
7a=14
Divide by 7 on both sides
A=2
Check your work-
7(a-1)=7
7(2-1)=7
14-7=7
7=7
A=2 is correct.
So the answer is A=2

Find the greatest perfect square that is factor of the number. 650

Answers

factor 650 and find the pairs

650=2*5*5*13
the pair is 5*5 which is 5² or 25

the greatest perfect square that is a factor of 650 is 25

The greatest perfect square that is a factor of 650 is 25

What is Perfect Square?

A perfect Square is defined as an integer multiplied by itself to generate a perfect square, which is a positive integer. Perfect squares are just numbers that are the products of integers multiplied by themselves,

What is Prime Factorization?

Prime Factorization is defined as any number that may be expressed as a product of prime numbers that has been said to be prime factorized. Any integer with exactly two factors 1 and the number itself. is said to be a prime number.

Given the number is 650

To determine the greatest perfect square that is a factor of the number 650.

We need to write 650 as the product of its prime factors, which is 650.

⇒ 650 = 2×5×5×13

So the pair is 5×5 which is 5² or 25

Hence, the greatest perfect square that is a factor of 650 is 25

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The statement “Angles that measure more than 90 degrees are obtuse angles” has a counterexample

Answers

I am pretty sure that the answer is true

Compare the functions shown below: f(x) = 4 sin (2x − π) − 1 g(x) is points and those points are (−1, 6) (0, 1) (1, −2) (2,−3) (3, −2) (4, 1) (5, 6) h(x) = (x − 2)2 + 4 Which function has the smallest minimum y-value?

Answers

f(x) wins. The sine has an amplitude of 4, and 1 is subtracted, so the minimum y value is -5. g(x) is never smaller than -3, and h(x) is always positive!

25. Which is an example of an operation?
A) 12
B) 6ab
C) +
D) y

Answers

Letter c is an operation.
Addition

What is the simplified form of the following expression? 5√8-√18-2√2
A. 2√2
B. 5√2
C. 9√2
D. 15√2

Answers

Answer:

Option (B) is correct.

To prove

As given the epression in the question is given by

[tex]= 5\sqrt{8} - \sqrt{18} - 2 \sqrt{2}[/tex]

Now simplify the above

Terms are written as

[tex]\sqrt{8} = \sqrt{2\times 2\times 2} = 2 \sqrt{2}[/tex]

[tex]\sqrt{18} = \sqrt{3\times 3\times 2} = 3 \sqrt{2}[/tex]

Put in the above expression.

[tex]= 5\times 2 \sqrt{2} -3 \sqrt{2} - 2 \sqrt{2}[/tex]

[tex]= 10 \sqrt{2} -5 \sqrt{2}[/tex]

[tex]=5 \sqrt{2}[/tex]

[tex]Therefore\ the\ expression\ 5\sqrt{8} - \sqrt{18} - 2 \sqrt{2}\ is\ equivalent\ to\ 5 \sqrt{2} .[/tex]





To prove that all circles are similar, you would use similarity blank?

Answers

Two main parameters determine the circle is the center and radius. From the point of view of similarity, the centre is not an important parameter. So we can imagine that all possible circles, we will draw from the same center. Then they will differ only by the length of the radius and all. The radius is a segment. All the segments are similar between them. What we wanted to prove.

The range of a relation is

A: the output (y) values of a relation
B: the input (x) values of the relation
C: a set of points that pair input values with output values
D: x and y values written in the form (x,y)

Answers

Let M and N be 2 sets, 

Consider a relation R, from M to N
that is:

R:M→N
R(x)=y

so x is taken from set M, and the product y, is in set N

The set of all output of R,so all possible y, is called the Range of y:


Answer: A: the output (y) values of a relation 

A ladder is leaning against a wall. The top of the ladder is 9 feet above the ground. If the bottom of the ladder is moved 3 feet farther from the wall, the ladder will be lying flat on the ground, still touching the wall. How long, in feet, is the ladder?

Answers

So technically they are asking you to find the hypotenuse of a right angle triangle the height is 9ft and the length is 3ft so the formula is
A² +b²=c²

the a² and B² Being the height and length and label the third side c²

so..
9²+3²=c²
9×9+3×3=c²
81+9=c²
40=c²
√40=√c²
6.32=c
therefore the ladder is 6.32

well i think that is how you answer

check the picture below

[tex]\bf \textit{using the pythagorean theorem}\\\\ r^2=x^2+y^2\implies r=\sqrt{x^2+y^2} \\\\\\ r=\sqrt{x^2+9^2}\implies r=\sqrt{x^2+81}\impliedby \textit{leaning ladder} \\\\\\ r=\sqrt{(x+3)^2+0^2}\implies r=\sqrt{(x+3)^2}\impliedby \textit{flat ladder}\\\\ -------------------------------\\\\[/tex]

[tex]\bf \sqrt{x^2+81}=\sqrt{(x+3)^2}\implies x^2+81=(x+3)^2 \\\\\\ x^2+81=x^2+6x+9\implies 81-9=6x\implies 72=6x\implies \cfrac{72}{6}=x \\\\\\ \boxed{12=x}\\\\ -------------------------------\\\\ \textit{now, the ladder "r" is }\sqrt{(x+3)^2}\implies \sqrt{(12+3)^2}\implies 15[/tex]

what does x equal 3.2x = 64

Answers

64/3.2 = 20
The answer is 20

- Your welcome

divide 64 by 3.2 to get x

64/3.2 = 20

 x = 20

The number of ways to listen to 4 different cds from selection of 15 cds

Answers

In general number of choosing r things from the group of n number of things(When order doesn't matter) = [tex]^nC_r[/tex]

We can expand [tex]^nC_r[/tex] as [tex]^nC_r = \frac{n!}{r! * (n-r)!} [/tex]

So same way we can find number of way to listen 4 different cds from 15 cds  = [tex]^{15}C_4[/tex]

Which we can calculate as
[tex]^{15}C_4 = \frac{15!}{4!* (!5 - 4)!} = \frac{15!}{4! * 11!} [/tex]
                         [tex]= \frac{15 * 14 * 13 * 12 * (11!)}{4*3*2*1 * (11!)} = \frac{15*14*13*12}{4*3*2*1} = 5* 7 * 13 * 3 *1 [/tex]
                                                  = 1365

Answer:

 32,760 is the correct answer, the first person is wrong! Took the test and this is it!

Step-by-step explanation:

HELP PLEASE!!!!!

Kajan repeatedly rolled a die and he was getting frustrated that he could not roll his favourite number, which is three. What is the probability that the first three occurred on the tenth roll?
0.0323 0.0269 0.323 mc009-1.jpg

Answers

The number of trials = 10
Probability of success (getting a 3) is p = 1/6
Probability of failure (not getting a 3) is q = 1 - 1/6 = 5/6

The probability of one success after 10 trials is given by the binomial distribution as
₁₀C₁ p¹ q⁽¹⁰⁻¹⁾ = 10*(1/6)*(5/6)⁹ = 0.323

Answer: 0.323

Factor 16x 2 + 16x + 4 completely.

a.(16x + 4)(x + 1)
b.(4x + 2)(4x - 2)
c.4(2x + 1)2

Answers

The answer will be c.

It should be 2(16x+3), but there are no answer choices for that so im not sure. Did you type in the wrong equation?

Write the standard form of the line that contains a y-intercept of -3 and passes through the point (3, 0). Include your work in your final answer. Type your answer in the box provided or use the upload option to submit your solution.

Answers

We have two points, (3,0) and (0,-3).  So we can find the slope of the line:

m=(y2-y1)/(x2-x1)

m=(-3-0)/(0-3)

m=-3/-3

m=1  so far for the line y=mx+b we have:

y=x+b, b is the y intercept which we were told is -3 so

y=x-3

The above is called the slope-intercept form of a line, y=mx+b, the standard form of a line is ax+by=c, so we need to get both variables on one side of the equation..

y=x-3  subtract x from both sides

-x+y=-3

While the above may be acceptable to some, technically the coefficient of x should be expressed as a positive value, so we should divide the above "solution" by -1 to get:

x-y=3
Final answer:

The equation of the line in standard form that has a y-intercept of -3 and passes through the point (3, 0) is y = x - 3.

Explanation:

The standard form of a line can be found using the formula y = mx +b, where 'm' is the slope and 'b' is the y-intercept. The y-intercept in this problem is -3, but we need to find the slope to complete the standard form of the line. Since our line passes through the point (3,0) and (0,-3), the slope, m, can be found by using the formula (y2-y1)/(x2-x1), which gives us a slope of 1. So the equation of our line in standard form is y = x - 3.

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How many equations are needed to solve for 1 unknown variable?

Answers

The number of equation/s that are needed in order to solve the problem is equal to the number of the varying variables involved. In this regard, we would say that to solve for 1 unknown variable, only 1 equation is needed. 

For number of variables greater than 1, as stated above, the number of equations should be equal to that number. However, it has to be noted that the equations should be independent and not the multiplicative of another. 

For the concept of multiplicity,

x + y = 0 and 2x + 2y = 0 are just the same equations. 

Hence, the answer to this item is one (1). 

You decide to put $150 in a savings account to save for a $3,000 down payment on a new car. If the account has an interest rate of 2.5% per year and is compounded monthly, how long does it take you to earn $3,000 without depositing any additional funds?
(I know it's 119.954 years, but I have no idea how to get that)

Answers

The formula is
A=p (1+r/k)^kt
A future value 3000
P present value 150
R interest rate 0.025
T time?
3000=150 (1+0.025/12)^12t
Solve for t
3000/150=(1+0.025/12)^12t
Take the log
Log (3000/150)=log (1+0.025/12)×12t
12t=Log (3000/150)÷log (1+0.025/12)
T=(log(3,000÷150)÷log(1+0.025÷12))÷12
T=119.95 years

Answer:

It take 119.954 years to earn $ 3000 without depositing any additional funds.

Step-by-step explanation:

Given:

Principal Amount, P = $ 150

Amount, A = $ 3000

Rate of interest, R = 2.5% compounded monthly.

To find: Time, T

We use formula of Compound interest formula,

[tex]A=P(1+\frac{R}{100})^n[/tex]

Where, n is no time interest applied.

Since, It is compounded monthly.

R = 2.5/12 %

n = 12T

[tex]3000=150(1+\frac{\frac{2.5}{12}}{100})^{12T}[/tex]

[tex]\frac{3000}{150}=(1+\frac{2.5}{1200})^{12T}[/tex]

[tex]20=(1+\frac{2.5}{1200})^{12T}[/tex]

Taking log on both sides, we get

[tex]log\,20=log\,(1+\frac{2.5}{1200})^{12T}[/tex]

[tex]1.30103=12T\times\,log\,(1.002083)[/tex]

[tex]T=\frac{1.30103}{12\times\,log\,(1.002083)}[/tex]

[tex]T=119.954[/tex]

Therefore, It take 119.954 years to earn $ 3000 without depositing any additional funds

Is it possible for a segment to have more than one bisector? Explain your reasoning.

Answers

Yes.

A bisector of a line segment is a line which divides the line segment into two equal parts.
A bisector of a line can divide the line in many different ways forming different angles.
A bisector is said to be a perpendicular bisector if the angle at the intersection of the two lines is 90 degrees.
But, there are several other bisectors that are not perpendicular bisectors.

Therefore, it is possible for a segment to have more than one bisector.

Final answer:

Yes, a segment can have more than one bisector. A bisector divides a segment into two equal parts.

Explanation:

Yes, a segment can have more than one bisector. A bisector of a segment is a line, segment, ray, or plane that divides the segment into two equal parts. Each bisector intersects the segment at its midpoint. Since the definition of a bisector doesn't specify uniqueness, there can be infinitely many bisectors of a given segment, especially in a two-dimensional plane.

For example, if you have a horizontal line segment, you could have one vertical bisector that divides it in the middle, but you could also have an infinite number of bisectors at various angles that also pass through the midpoint. Thus, there are multiple bisectors for any given line segment. Thus, consider two points A and B on a straight line segment AB. According to geometric principles, you can draw a perpendicular bisector that would be unique in the sense that it's the only line that both bisects AB and is perpendicular to it

use any method to solve the equation. If necessary, round to the nearest hundredth. 9x^2=17

Answers

9x^2 = 17...divide both sides by 9
x^2 = 17/9 or 1.89....take square root of both sides, eliminating the ^2
x = (+-) sqrt 1.89
x = (+-) 1.37 <==

The solution of the given quadratic equation is x = 1.37, - 1.37.

What is a quadratic equation?

"A quadratic equation is an algebraic equation of the second degree in any variable."

Given quadratic equation:

9x² = 17

⇒ x² = (17 / 9)

⇒ x = ± √(17 / 9)

⇒ x = ± (√17) / 3

⇒ x = 1.37, - 1.37

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