i need major help completing math questions (im terrible at it.)

The length of the ribbon that Regina needed is 38.10 inches

The measurement of the circle's boundaries is known as the circumference or perimeter of the circle. The circumference of a circle is its length when it is opened up and drawn as a straight line. Units like cm or unit m are typically used to measure it.

The formula for the Circumference of the circle is given by

where 'r' is the radius of the circle.

Here we have

Regina is tying a bow around a soccer ball to give to her sister.

The ribbon must be 10 inches longer than the circumference of the ball

Length of the ribbon = Circumference of ball + 10 inches

Given the radius of the ball, r = 4.5 inches  

Circumference of ball = 2(3.14)(4.5) = 28.26 inches

So, Length of the ribbon = 28.26 inches + 10 inches = 38.10 inches

Therefore,

The length of the ribbon that Regina needed is 38.10 inches.

Learn more about Circumference of circle at

https://brainly.com/question/11213974

#SPJ1

Answer:

PLS GIVE IT TO ME

Step-by-step explanation:

Irene's measuring error is 12.5% when she believes she has space for a 45-inch-wide bookcase but only has enough for a 40-inch-wide bookcase.

A data value's approximation error is the difference between an exact value and some approximation to it. This inaccuracy can be stated as either an absolute or relative error. A computing machine accuracy or measurement mistake can generate an approximation error. The difference between the estimated and real values in relation to the actual value is indicated as a percentage. In other words, the relative error multiplied by 100 equals the percent error. The percentage error compares an estimate to the true amount and expresses the difference as a percentage. This statistic enables analysts to determine the magnitude of the inaccuracy in relation to the real value.

Here,

percent error,

=(45-40)/40*100

=5/40*100

=12.5%

The percent error in irene's measurement is 12.5% when she thinks she has space for a 45-inch-wide bookcase but turns out that she only has space for a 40-inch-wide bookcase.

To know more about percent error,

https://brainly.com/question/10501147

#SPJ4

The location of the vertex of this graph is (-1, -18)

From the question, we have the following parameters that can be used in our computation:

The graph

The vertex of a graph is the minimum or the maximum of a graph

In this case, it is a minimum and the minimum is located at (-1, -18)

Hence , the vertex is (-1, -18)

Read more about vertex at

https://brainly.com/question/1480401

#SPJ1

Answer:-7

Step-by-step explanation:

Answer:

Step-by-step explanation:

When you are dividing negative numbers, it's going to stay negative:

[tex]= > -21/3=\\\\= > -7[/tex]

Therefore, the correct answer is -7

Answer:  Arc EG/GE = 135°

Step-by-step explanation:

Given:

∠EGF = 80°

Arc FG = 65°

Since ∠EGF = 80°, the value of Arc EF = 2(∠EGF)

Therefore, Arc EF = 2(80°) = 160°

The arc measure of an entire circle is 360°.

Therefore,

360° = EF + FG + GE

360° = 160° + 65° + GE

GE/EG = 135°

The value of f(7.5) of the exponential function is 86.84

The general form of an exponential function is given by:

f(x) = abˣ

Since f(x) is an exponential function, and f(4)=21 and f(4.5)=47. We can write that:

21 = ab⁴   --- (1)

47 = ab⁴°⁵  --- (2)

Divide (2) by (1):

47/21 = b⁴°⁵⁻⁴

47/21 = b⁰°⁵

b =√(47/21)

b = 1.50

Put b = 1.5 into (1):

21 = ab⁴

21 = a(1.5)⁴

a = 21/(1.5)⁴

a = 4.15

So the exponential function f(x) = 4.15(1.50)ˣ

To find the value of f(7.5), put  x = 7.5 into the exponential function:

f(x) = 4.15(1.50)ˣ

f(7.5) = 4.15(1.50)⁷°⁵

f(7.5) = 86.84

Learn more about exponential function on:

brainly.com/question/24214161

#SPJ1

The building have to rent 14 offices with area 500 ft² each so that the total acquired space is  7000 ft².

What is division?

One of the four fundamental mathematical operations—the others being addition, subtraction, and multiplication—is division. Division is the process of dividing a larger group into smaller groups so that each group contains an equal number of things.

The area of one office is 500 ft².

The total space acquired by the office building is 7000 ft².

To find the number of offices the building is renting, use the formula of division -

Number of office = Total space rented / Area of one office

Let the value of number of office rented be x.

Substituting the values in the equation -

x = 7000/500

x = 14

Therefore, the number of offices being rented is 14.

To learn more about division from the given link

https://brainly.com/question/25289437

#SPJ1

The probability that at least 2 people believe that they have seen a UFO is 0.264.

Here, n = 10, p = 0.1, (1 - p) = 0.9 and x = 2

As per binomial distribution formula P(X = x) = nCx * p^x * (1 - p)^(n - x)

We need to calculate P(X >= 2).

P(X >= 2) = (10C2 * 0.1^2 * 0.9^8) + (10C3 * 0.1^3 * 0.9^7) + (10C4 * 0.1^4 * 0.9^6) + (10C5 * 0.1^5 * 0.9^5) + (10C6 * 0.1^6 * 0.9^4) + (10C7 * 0.1^7 * 0.9^3) + (10C8 * 0.1^8 * 0.9^2) + (10C9 * 0.1^9 * 0.9^1) + (10C10 * 0.1^10 * 0.9^0)

P(X >= 2) = 0.194 + 0.057 + 0.011 + 0.001 + 0 + 0 + 0 + 0 + 0

P(X >= 2) = 0.264

The probability is 0.264.

Learn more about probability on:

https://brainly.com/question/24756209

#SPJ1

Answer:

b

Step-by-step explanation:

hopefully this helps

Answer:

Sandy's experimental probability was exactly the same as the theoretical probability for all three experiments.

Figure A is replicated in scale in Figure B. A figure that is geometrically identical to the original figure is called a scale copy.

Given are two triangular figures, Figure A and Figure B.

The scale factor from figure A to figure B is requested of us.

As a result, Figure B is the last figure and Figure A is the first figure.

Any figure's scale factor is described as stated in equation (1)

[tex]Scale Factor =\frac{\text { Final Dimension }}{\text { Initial Dimension }} \ldots \ldots . . .(1)$[/tex]

We can see from the preceding figures that while figure A uses 4 squares to represent the length of a pair of one parallel sides, figure B only needs 2 squares to represent the same length.

As a result, we can write that using equation (1).

[tex]Scale factor =\frac{\text { Dimension of figure } \mathrm{B}}{\text { Dimension of figure } \mathrm{A}}=\frac{2}{4}=\frac{1}{2}=0.5$[/tex]

Since the scale factor is smaller than 1, the figure is contracted, and the scale factor from Figure A to Figure B is therefore 0. 5.

To learn more about scale copy, refer to:

https://brainly.com/question/28747162

#SPJ1

Answer:

  2

Step-by-step explanation:

You want the count of negative terms in the simplified form of -3x² + 2y² + 5xy - 2y + 5x² - 3y².

The expression is simplified by combining like terms.

  -3x² + 2y² + 5xy - 2y + 5x² - 3y² = (-3+5)x² +5xy +(2-3)y² -2y

  = 2x² +5xy -y² -2y

There are two negative terms in the simplified expression.

Answer: Can you show the whole problem please?

Step-by-step explanation:

Answer:

Step-by-step explanation:

the volume of rectangle is length * width * height

so v=(3x-4)*(3x+4)*2x=(9x^2-16)*2x=18x^3-32x

maybe the choice is D

The value of x in the triangle is 110 degrees.

The exterior angle theorem states that the measure of an exterior angle is equal to the sum of the measures of the two remote interior angles of the triangle.

Therefore, the sum of the two opposite interior angle is equals to the exterior angle x.

Hence, using exterior angle theorem,

x = 45 + 65

x = 110 degrees

Therefore, the most efficient way to measure the angle x is by summing the opposite interior angles.

The value of x is 110 degrees.

learn more on angles here: brainly.com/question/9006000

#SPJ1

The additive inverse of 19 /- 6 is -19 /+ 6 and the additive inverse of 2 3 is -2 3.

Additive inverse is a mathematical term that refers to when two numbers are combined and their sum is equal to zero. To calculate the additive inverse of a fraction, you need to change the sign of the numerator and denominator. In the case of 19 /- 6, the -6 is already negative, so you just need to change the sign of the numerator from 19 to -19. Similarly, for 2 3, you need to change the sign of the numerator from 2 to -2. This would mean that the additive inverse of 19 /- 6 is -19 /+ 6 and the additive inverse of 2 3 is -2 3.

Learn more about additive inverse here:

https://brainly.com/question/13715269

#SPJ4

Randomly surveyed 50 seventh-grade students at Pablo's school.

What is confidence in statistics?

In statistics, confidence refers to the level of certainty or trust in the accuracy of a statistical estimate. A confidence interval is a range of values that is likely to contain the true value of a population parameter with a certain level of confidence. The level of confidence is usually expressed as a percentage, such as 95% or 99%.

In this experiment, the focus is on seventh graders, and therefore a more representative sample of the population will be selected 50 seventh-grade students from Pablo's school. Selecting this category of the sample will increase confidence in the result of the statistical experiment.

Hence, randomly surveyed 50 seventh-grade students at Pablo's school.

To learn more about confidence in statistics, visit:

https://brainly.com/question/15712887

#SPJ1

Answer:

the answer is A. 64:343.

Step-by-step explanation:

The ratio of the volumes of two similar figures is equal to the cube of the ratio of their corresponding side lengths. Since the scale factor of the two cylinders is 4:7, the ratio of their corresponding radii is 4:7 and the ratio of their heights is also 4:7.

So, the ratio of their volumes is (4/7)^3 = (64/ 343) = 64:343

So, the answer is A. 64:343.

Area of the enclosed figure is, 8√ 5 (5 + 2√5) units².

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

Maria plots the following points on a coordinate grid.

Here, Points are,

⇒ (1, 3) (5, 7) (5, 5) (8, 9) (8, 3 ) (1, 3)

Clearly, It make pentagon.

And, Area of pentagon = 1/4 √5 (5 + 2√5) a²

Here, The side of pentagon = √ (7 - 3)² + (5 - 1)²

                                           = √4² + 4²

                                           = √32

                                           = 4√2

Thus, Area of figure = 1/4 √5 (5 + 2√5) a²

                               = 1/4 √5 (5 + 2√5) (4√2)²

                               = 8√ 5 (5 + 2√5)

Learn more about the mathematical expression visit:

brainly.com/question/1859113

#SPJ1

The common ratio of the given geometric sequence is 0.5

We know that for any geometric sequence,

aₙ = arⁿ⁻¹

where aₙ is the nth term of the sequence

a is the first term of the sequence

r is the common ratio.

Hence when we say that the third term is 100 we can conclude that for the series

ar³⁻¹ = 100

or, ar² = 100                                                                                      [1]

Also, we have been given that the eight-term is 3.125

Hence we can say that,

ar⁷ = 3.125                                                                                        [2]

By dividing equation 1 by equation 2 we get

ar⁷/ar² = 3.125/100

or, r⁵ = 3125/100000

or,  r⁵ =  5⁵/ 10⁵

Since the powers are the same, the bases can be equated to get

r = 0.5

To learn more about Geometric Sequences visit

https://brainly.com/question/13614184

#SPJ4

Complete Question

A geometric sequence has only positive terms. The third term is 100 and the eighth term is 3.125. Find the common ratio.

As per the given mass the potential energy of the ball will be equal to 450 J when it reaches the top to its ascent.

Here we have given that Mass of ball is 1.0kg

And we need to find the value of the kinetic energy  and here we also know that the velocity of the ball is 30m/s

As we all know that Kinetic energy is the energy possessed by a moving object. It is measured in joules, and then it depends on the mass (m) of the object and the velocity (v) by which it moves, then it can be written as,

=> K.E = 1/2mv²

=> KE = 1/2 x 1.0kg x (30m/s)²

when we simplify this then we get

=> KE = 0.5 x 1.0 x 900

Then the value of KE is  450J

Therefore the potential energy of the ball is 450 joules.

To know more about velocity here

https://brainly.com/question/29253175

#SPJ4

Answer:

the probability of landing on a number less than seven is 2/3 which is five and six

the probability of landing on a factor of forty- two is the same which is 2/3 because it is 6 and 7

70 is the greatest weight that Evelyn can put into the cardboard without going over the weight limit

From the question

Weight limit on one box = 28 kilograms

Weight of each box = ⅖ kilogram

To find the greatest number of boxes of pasta she can put into one cardboard box without exceeding the weight limit, we have:

G=28/2/5

To divide the fraction, change the division sign to multiplication and flip the fraction:

=28x5/2

=140/2

=70

Therefore, the greatest number of boxes Evelyn can put without going over the weight limit is 70 boxes

Learn more about weight at:https://brainly.com/question/86444

#SPJ1

ABC is a right-angled triangle.

A triangle in which one angle is 90 degree is called a Right Angled Triangle.

AB is congruent to DB because segment DE was constructed so that

DE = AB, BC is congruent to EF, because segment EF was constructed so that EF = BC,

Since Triangle DEF is a right-angled triangle.

Using Pythagoras Theorem,

DE² +EF²  = DF²  

We are given that AB²+BC² = AC²

Since, DE = AB and EF = BC, DE²  +EF²  = AC²

Also, DF² = AC² by the above equation.

DF = AC

So AC is congruent to DF by the definition of congruence.

Δ ABC ≅ Δ DEF by SSS rule

Therefore, ABC is a right-angled triangle.

To know more about Right Angled Triangle

brainly.com/question/3770177

#SPJ1

The measure of the angle m<ROS = 14°.

What is the angle?

An angle is a geometric figure that is defined by two rays that have the same endpoint. The rays are called the sides of the angle and the common endpoint is called the vertex of the angle. The angle is the amount of rotation between the two rays, measured in degrees or radians.

In the given figure,

m<QOS = 46, m<POR = 58 and m<POQ = 26

m<POR = m<POQ + m<QOR

58 = 26 + m<QOR

m<QOR = 32

m<QOS = m<QOR + m<ROS

46 = 32 + m<ROS

m<ROS = 14

Hence, the measure of the angle m<ROS = 14°.

To learn more about the angles, visit:

https://brainly.com/question/24775470

#SPJ1

Answer: Obtuse scalene

Step-by-step explanation: Hope it helps, please mark brainliest and give thanks.

Answer:

obtuse scale

Step-by-step explanation:

The circle's shaded area, which has a sector angle of 50 degrees and an arc length of 5/3 pie, has a surface area of 15.67m2.

A circle is created in the plane by each point that is a specific distance from another point (center).  Every pair of points in a circle's closed, two-dimensional plane are evenly spaced apart from the "center." A circular symmetry line is made by drawing a line through the circle. Additionally, it is rotationally symmetric about the center at every angle.

given

A / θ = πr² / 2π

A / θ = r² / 2

A = r² * θ / 2

A = (5/3)^2 * 25

A  = 15.67 m2

The circle's shaded area, which has a sector angle of 50 degrees and an arc length of 5/3 pie, has a surface area of 15.67m2 .

To know more about circle visit:

https://brainly.com/question/29142813

#SPJ1

The completed question is :-

In circle E , the length of FG = 5/3π  and ∠FEG = 50°  . Find the area shaded below. Express your answer as a fraction times .

So, the indicated value of the subject using direct capitalization is $995,909.09.

To find the indicated value of the subject property using direct capitalization, you need to use the following formula:

NOI / Cap Rate = Indicated Value

The overall capitalization rate is 6.00% and the projected first-year NOI is $247,000.

Therefore, Indicated value can be calculated as:

Indicated Value = $247,000 / 0.06 = $4,116,666.67

Another way to find the indicated value is using the Going-out cap rate, which is 22.0% and fifth-year NOI $218,300.

Indicated Value = $218,300 / 0.22 = $995,909.09

It's important to note that a pro forma is a projection and not a guarantee of future results. Also, the value obtained from using direct capitalization method is an indication, not the actual value, as it's based on certain assumptions and it may not reflect the current market conditions.

Therefore, the indicated value of the subject using direct capitalization is $995,909.09

To learn more about Pro Forma

visit; brainly.com/question/15417922

#SPJ4