Mathematics Middle School

Which statement is true?
All rectangles are parallelograms.
All rectangles are squares.
Some triangles are quadrilaterals.
Every rhombus is a square.

Answers

Answer 1

Answer:

A

Step-by-step explanation:

All rectangles are parallelograms and all their sides are parallel.

Related Questions

73×34=73×(30+4)=(73×)+(73×)=

Answers

I'm a bit confused by the question, but I'll just guess this is what you wanted:

73×34= 2482

73×(30+4)= 2482

And I'm not sure what you mean by (73×)+(73×)=?

If this helped, please give me brainliest :)

peggy is five years older than peter and susan is two years younger than peter the sum of their ages is 15 years how old is each child

Answers

Peter is 4 years old, Peggy is 9 years old, and Susan is 2 years old.

Let's denote Peter's age as ( P ) years. Based on the given information:

1. Peggy is five years older than Peter, so Peggy's age is ( P + 5 ) years.

2. Susan is two years younger than Peter, so Susan's age is ( P - 2 ) years.

The sum of their ages is given as 15 years:

[tex]\[ P + (P + 5) + (P - 2) = 15 \][/tex]

Now, simplify and solve for \( P \):

[tex]\[ 3P + 3 = 15 \]\[ 3P = 12 \]\[ P = 4 \][/tex]

So, Peter is 4 years old. Using this information, we can find Peggy's age[tex](\( P + 5 \)) and Susan's age (\( P - 2 \)):[/tex]

- Peggy: ( 4 + 5 = 9 ) years old

- Susan: ( 4 - 2 = 2 ) years old

Therefore, Peter is 4 years old, Peggy is 9 years old, and Susan is 2 years old.

hurry........plz asap The owner of a bookstore predicts that over 50% of the books she sells each week are fiction books. To test this prediction, the owner randomly selects 150 books out of the total number of books sold for a week and records the type of each book. The table shows the results of samples taken for 2 separate weeks.


Based on these samples, is the owner's prediction correct? Select from the drop-down menus to correctly answer the question.

The owner's prediction is Correct/Not Correct . Based on the samples,
about 17% of the books sold each week are fiction books.
35%
53%
70%





Answers

not correct and 35% for the answers

Answer:

The owner's prediction is Not Correct .. Based on the samples,  about 35% of the books sold each week are fiction books.

Step-by-step explanation:

The owner of a bookstore predicts that over 50% of the books she sells each week are fiction books.

Based on the table of randomly selected sample we see that in week 1 there are 50 fiction books out of total 150 books.

so, the percentage of fiction books are:

[tex]\dfrac{50}{150}\times 100\\\\=33.33\%[/tex]

Similarly in the second week i.e. week 2 the number of fiction books are 55 out of 150 books so, the percentage of fiction books in week 2 are:

[tex]\dfrac{55}{150}\times 100\\\\=36.66\%[/tex]

Hence,

The owner's prediction is Not Correct .. Based on the samples,  about 35% of the books sold each week are fiction books.

What is the perimeter of a parallelogram measuring 5 ft. x 9 ft.?

Answers

so.... In a paralleogram, both opposite sides are equal.
P=5+5+9+9
P=28 ft

Opposite sides of a parallelogram are equal in length so 
the perimeter = 2*9 + 2*5 = 28 ft Answer

How to write 8/12 as a product of a whole number and a unit fraction

Answers

8 X 1/12. Hope it’s help

can someone double check my work for this problem? I got 38°??

Answers

We need to use Law of sine.

sin A/a = sin C/c
sin A/|CB| = sin C/|AB|

sin A/14 = sin(118⁰)/ 20
sin A = (14*sin(118⁰))/ 20

A=arcsin((14*sin(118⁰))/ 20) ≈ 38⁰

What is 20-3.05+(-9.5)

Answers

Your answer is 7.45
(evan43)
20-3.05 is 16.95+(9.5) I’m not sure if you add or multiply but here’s both ... 16.95+9.5=26.45 or 16.95x9.5=161.025. Hope it helps....Also remember PEDMAS, parentheses, exponents, divide, multiply, add, subtract, those are the steps in order you have to do in problems like this.

Graph y= 2x-2 with the domain (1,2,3)

Answers

Graph attached. 
To graph by hand find the values at 1 and 3 by plugging it into the original function and drawing a line between the two.
2(1)-2 = 0     Point  (1,0)
2(3)-2 = 4     Point  (3,4)


please show steps to solve y=3\2x-2 y=x+2

Answers

Substitute what you know y is equal to into the equation:
y = x + 2
3/2x - 2 = x + 2

Then you can simplify your equation by multiplying both sides by 2 to eliminate the fraction which will give you:

3x - 4 = 2x + 4

Add the -4 to the other side to get 8 and subtract the 2x from the 3x so you have:

x = 8    Now solve for y by substituting your value for x into the other equation:
y = 3/2(8) - 2    Simplify by combining your numbers and you get:
y = 10     Check your answer by substituting y and x into the original equation:
(10) = (8) - 2
Correctly done! So your answers are x = 8 and y = 10



Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.

Answers

f(1)=4(1+1+7)-2(1)+8-4
f(1)=36+2
f(1)=38

f(2)=4(2+2+7)-2(2)+8-4
f(2)=44

A triangle has sides with lengths of 60 centimeters, 63 centimeters, and 87 centimeters. Is it a right triangle

Answers

We can check this by seeing if Pythagorean's theorem applies. The longest side is the hypotenuse, so let's see if this is true:
[tex]60^2+63^2 = 87^2[/tex]
[tex]7569 = 7569[/tex]

This is, indeed correct, thus, this is a right triangle.

Since the given lengths satisfied the Pythagorean theorem then the given triangle is a right angled triangle.

Use the concept of the triangle defined as:

A triangle is a three-sided polygon, which has three vertices and three angles which has a sum of 180 degrees.

And the Pythagoras theorem for a right angled triangle is also defined as:

(Hypotenuse)²= (Perpendicular)² + (Base)²

The given length of sides are:

60 centimeters, 63 centimeters, and 87 centimeters.

Now take,

Hypotenuse = 87 cm

Base = 63 cm

Perpendicular =  60 cm

Apply the Pythagorean theorem,

87² = 60² + 63²

Calculating it,

7569 = 7569

Since the given sides satisfied the Pythagorean theorem,

Hence,

The triangle is a right angled triangle.

Learn more about the triangle visit;

brainly.com/question/1058720

#SPJ4

Research scientists need a certain type of bacteria to conduct an experiment. There are 100 bacteria in a certain culture. The culture grows at a rate of 70% daily. The scientists need at least 1,400 bacteria to conduct an experiment. What is the least number of days they must wait for the bacteria culture to reach a quantity of 1,400? (Hint: use a guess-and-check method to determine the lowest number of days that satisfy the requirement.) A. 4 days B. 5 days C. 6 days D. 7 days

Answers

Assuming that day one starts with a 100 and day 2 increases by 70% and so onthe answer would be 6 days

100 - 170 - 289 - 491.4 - 835.21 - 1419.8

A basketball coach keeps track of points scored per game for all of her players. she gives a trophy to the player with the highest mean score at the end of the season. which of the following justifies why she uses the mean instead of the median?

A. the mean and median give the same information, so it doesn't matter which one she chooses.

B. she wants to take unusually good or bad games into account

C. she wants to remove unusually good and bad games from consideration.

Answers

Answer:

B lol

Step-by-step explanation:

don't ask me

Final answer:

The coach uses the mean to track player scores because it incorporates all scores, including unusually high or low ones, giving credit for exceptional performances. The median would only consider the middle score and discard extremes.

Explanation:

The basketball coach uses the mean instead of the median to keep track of points scored per game for all her players because she wants to take unusually good or bad games into account (option B). The mean is calculated by adding up all the scores and dividing by the total number of games, so each game's score has a direct impact on the result. In contrast, the median only considers the middle score and discards extreme values, making it less sensitive to unusually high or low scores.

For instance, if a player scores 30 points in one game and then 10 points in each of the next nine games, their mean score would be (30 + 9*10)/10 = 13 points per game. In contrast, their median score would be 10 points per game because that's the middle value when all scores are listed in numerical order. Therefore, the choice to use the mean allows the coach to give credit for exceptional performances.

Learn more about Mean vs Median here:

https://brainly.com/question/31609872

#SPJ6

how do i convert 100 yards in 12 seconds to yards per second

Answers

To convert from 100 yds/12 seconds to yards per second, divide both sides by the number 12.
                                  _
You'll end up with 8.3 yards per second.

you divide 100 and 12. (100/12) once u divide it, you will get 8.33 seconds :)

the length of the hypotenuse of an isoceles right triangle whose leg is one unit

Answers

The answer may be 1.4. Isosceles triangles have 2 equal sides. Since you know the measure of one, you know both legs.
1^2+1^2=c^2
1+1=c^2
√2=c
c=1.4
Remember the hypotenuse must be bigger than the legs. 

HEEEEEEEEEEEEEEEEEELP!!!!!!!!
please explain how to get to the answers ASAP

Answers

Question 1
 Part A:
 We must evaluate the following intervals:
 if d> = 5:
 The function for this case is:
 C = 4.70d
 if d <5:
 The function for this case is:
 C = 4.70d - 1
 Part B: 
 We evaluate the functions corresponding to the number of days:
 For d = 4
 C = 4.70 * (4) - 1 = 17.8 $
 For d = 7
 C = 4.70 * (7) = 32.9 $
 Answer:
 option 3
 Question 2:
 For this case, what you should do is find the linear function that best suits the problem.
 We have then:
 y = 3x + 3
 We evaluate for different values of x to compare with the table:
 f (0) = 3 (0) + 3 = 3
 f (1) = 3 (1) + 3 = 6
 f (2) = 3 (2) + 3 = 9
 f (3) = 3 (3) + 3 = 12
 f (4) = 3 (4) + 3 = 15
 We observe that all the values coincide with the table.
 Answer:
 option 2.

Can the sides of a triangle have lengths 41, 37, and 19?

Answers

Yes. See the attachment.

Can somebody help me with this homework

Answers

6) A, C, and E are the correct choices.

Hope this helps :)

Quadrilateral ABCD is inscribed in this circle.



What is the measure of ∠A ?

Enter your answer in the box.

Answers

arcDAB = 2*m∠C = 2*121 = 242°
arcDCB = 360° - arcDAB = 360 - 242 = 118°
m∠A = arcDCB/2 = 118/2 = 59°
One of the circle theorems is that opposite angles in a cyclic quadrilateral sum to 180°.
We can see that C is opposite to A, so in other words angle C + angle A = 180°. This can quickly be solved:
121+A=180
Minus 121 on both sides
A=59°

The standard tip in a restaurant is 15% of the bill before tax. Many people in California find the tip by doubling the sales tax, which is 8.25%. By how many cents does this exceed the standard tip on a bill of 60% before tax?

Answers

To answer this you could do a couple things. 1. Actually calculate both tips and then subtract them. Here is the math ( assuming it is $60, not 60% that you mean). a. 0.15 x 60 = $9. b. 0.0825 x 2 x 60=$9.90. c. 9.90-9.00= $0.90 difference.

The other strategy would be to find the difference on the percents and then multiply by $60. a. 8.25%x2=16.5%-15%. Difference of 1.5%. b. 0.015 x $60=$0.90.

Answer:

90¢

Step-by-step explanation:

The percent paid by many people in California is [tex]$16.50\%$, or $1.50\%$[/tex] more of the bill than the standard tip. Thus the total difference is [tex]$\$60\cdot 0.015 = \$0.90$[/tex], or [tex]$\boxed{90}$[/tex] cents.

Hope this helped! :)

Marvin lives in Stormwind City and works as an engineer in the city of Ironforge. In the morning, he has 333 transportation options (teleport, ride a dragon, or walk) to work, and in the evening he has the same 333 choices for his trip home. If Marvin randomly chooses his method of travel in the morning and in the evening, what is the probability that he teleports at least once per day?

Answers

The event "Atleast once" is the complement of event "None".

So, the probability that Marvin teleports atleast once per day will the compliment of probability that he does not teleports during the day. Therefore, first we need to find the probability that Marvin does not teleports during the day.

At Morning, the probability that Marvin does not teleport = 2/3

Likewise, the probability tha Marvin does not teleport during evening is also 2/3.

Since the two events are independent i.e. his choice during morning is not affecting his choice during the evening, the probability that he does not teleports during the day will be the product of both individual probabilities.

So, the probability that Marvin does not teleport during the day = [tex] \frac{2}{3}*\frac{2}{3}=\frac{4}{9} [/tex]

Probability that Marvin teleports atleast once during the day = 1 - Probability that Marvin does not teleport during the day.

Probability that Marvin teleports atleast once during the day = [tex] 1-\frac{4}{9}=\frac{5}{9} [/tex]

Answer:

5/9

Step-by-step explanation:

The chances he teleports in the morning is 2/3

Same for the evening.

so mulitply the two choices 2/3 * 2/3= 4/9

Then add 1 to account for teleports ONCE a day

1+4/9= 5/9

Find the surface area of a pyramid with base sides of 6 inches and a slant height of 12 inches.

Answers

The area of base:

[tex]B=6^2=36\ in^2[/tex]

The area of one side:

[tex]S=\dfrac{1}{2}\cdot6\cdot12=36\ in^2[/tex]

The surface area:

[tex]SA=B+4S\to SA=36+4\cdot36=180\ in^2[/tex]

Please answer asap 1 thru 6 please

Answers

1) 

V = πr²h
V = (3.14)(2)²(5)
V = 62.8 in³

2)

V = 1/3πr²h
V = 1/3(3.14)(4)²(8)
V = 133.97 in³

3) Sum of the interior angles of a triangle are 180. So we can add the two given angles and subtract the sum by 180 to find the unknown angle.

180 - (93+48) = C
180 - (141) = C
39 = C

4)

V = 4/3πr³
V = 4/3(3.14)(4)³
V = 267.95 cm³

5)

V = πr²h
V = (3.14)(3)²(12)
V = 339.12 ft³

6)

V = 4/3πr³
V = 4/3(3.14)(9)³
V = 3,052.08 cm³

Hope this helps :)

a line's slope is 5, and its y-intercept is 6. what is its equation slope-intercept form?
Write your answer using integers, proper fractions, and improper fractions in simplest form.

y = x +

Answers

the answer will be y = 5x + 6

because the slope intercept form is y = mx +b

where m is the slope and b is the y intercept

Hope i helped
Plug in the slope and y-intercept

Our slope is 5, so our equation so far is
y = 5x + b

Now substitute y-intercept for b
y = 5x + 6
this is your equation

A diver dives from a 9-foot-high platform with an initial speed of 16 feet per second. The height, h, of the diver can be modeled by the equation ℎ = −162 − 16 + 9, where t represents time in seconds. How long will it be before the diver hits the water?

Answers

Answer: The diver will hit the water after 0.4 seconds.

This is an example of a quadratic equation. It is in the shape of an upside down parabola.

Our goal is to solve the following equation:  0 = -16x^2 - 16x + 9

To do this, we can use the quadratic formula. The variables are:
a = -16
b = -16
c = 9

It will be: 16 +/- The square root of (-16)^2 - 4(-16)9 all divided by 2(-16).

This will give a positive answer of 0.4 seconds.

 


Can somebody pls help I’ll mark brainliest

Answers

Answer:
64

Explanation:
The square of any number can be obtained by multiplied the number by itself.
In other words:
square of x = x² = x * x

For the given, we want to get the square of 8. This means that we will multiply 8 by itself.
Therefore:
square of 8 = 8² = 8 * 8 = 64

Hope this helps :)

Answer:

[tex]8^2=8\times 8=64[/tex]

Step-by-step explanation:

We have been given a number. We are asked to find the square of our given number.  

We know that the square means a quantity multiplied by itself. When a number (a) is multiplied by itself, we can write that number by raising to second power as: [tex]a\times a=a^2[/tex]

Since we need to find the square of 8, so we can write it as:

[tex]8\times 8=8^2[/tex]

[tex]64=8^2[/tex]

Therefore, the square of 8 is 64.

Point B, located at (-4, -7), is reflected over the y-axis. What are the coordinates of B'?

(-4, 7)
(4, -7)
(4, 7)
(-4, -7)

Answers

Answer:

(4, -7)

Step-by-step explanation:

The rule for a reflection over the y-axis is (x,y)→(−x,y). So (-4, -7)=(--4, -7) since the 2 negatives cancel out the new coordinates are (4, -7)

A researcher randomly surveyed two separate age groups to determine the number of hours teens spend on the Internet each week. The results are shown in this table. 13- to 14-year-olds 12 8 7 8 9 6 7 7 9 10 15- to 16-year-olds 15 6 21 12 13 12 8 9 7 10 Based on these results, which conclusions can you draw about these two groups of teens? Select each correct answer.


A. On average, 15- to 16-year-olds spend a few hours more on the Internet each week compared to 13- to 14-year-olds.
B. On average, 15- to 16-year-olds spend a few hours less on the Internet each week compared to 13- to 14-year-olds.
C. On average, the two groups of teens spend about the same amount of time each week on the Internet.
D. The amount of time that 15- to 16-year-olds spend on the Internet each week is more variable than the amount time 13- to 14-year-olds spend.
E. The amount of time 15- to 16-year-olds spend on the Internet each week is less variable than the amount time 13- to 14-year-olds spend.
F. The amount of time that the two groups spend on the Internet each week varies by about the same amount.

Answers

The answer to this is A.

Answer:

Option A and D.

Step-by-step explanation:

In this question the given table is of two separate age groups to determine the number of hours teens spent on the internet each week.

From the table

average hours spent by teens between the age of 13-14 years old

=  (12+8+7+8+9+6+7+7+9+10+15)/10 = 83/10 = 8.3 hours

average hours spent by teens between age of 15-16 years old

=(15+6+21+12+13+12+8+9+7+10)/10 = 113/10 = 11.3 hours

From these averages we can conclude

A) 15-16 year old spend a few hours more than 13-14 year old teens.

D. The amount that 15-16 year old teens spend on internet is more variable than the time spent by 13-14 years old.

Option A and D are the correct options.

What is the first quartile, Q1, of the data represented by the box plot?



Enter your answer in the box.


Answers

the five numbers, from left to right, represent respectively:
the minimum, the first quartile (also called the lower quartile), the median (the second quartile), the upper quartile (the 3rd quartile), and the maximum.  
the first quartile is 12.5 in this case. 

Attila the Hun was a ruler of the Hunnic Empire. The Romans feared him greatly until his death since he made quite a habit of invading. The Romans no longer feared him after his death in 453. Let xxx represent any year. Write an inequality in terms of xxx and 453 that is true only for values of xxx that represent years after the year that Attila died.

Answers

453< x  if the value of x is greater than 453 then the Romans didn't fear him because after 453 he was dead. 453 and any number smaller than that would be times in his life that he would have been feared.


Attila the Hun died in 453.

Let x represents the year.

So the inequality for will be 453<x.

Explanation:

Here x will be smaller than 453 because Hun was dead in 453. So 453 and any number smaller than that would be the times in his life that he would have been feared.

Suppose the value of x is greater than 453, then the Romans didn't fear him because after 453 he was dead.

Other Questions
What is the area of the polygon?? what is -10-6=?. Please I need an answer and it's my grade The amount of a chemical solution is measured to be 2 liters. What is the percent error of the measurement? Which statement correctly describes one way that the properties of water affect heat and temperature? Water retains more heat than other materials, making coastal ecosystems warmer year-round. Water absorbs heat when it freezes, helping to insulate lakes and ponds from cold temperatures. Water absorbs heat when it changes to vapor, helping to keep animals cool through perspiration. Water retains less heat than other materials, keeping aquatic ecosystems cooler than those on land. The base of a regular pyramid is a hexagon. The figure shows a regular hexagon with center C. An apothem is shown as a dashed segment perpendicular to an edge and is labeled as a. A dashed line segment joins the center with the left vertex of the edge perpendicular to the apothem. This segment has a length of 8 centimeters. The angle formed by the edge and the segment measure 60 degrees. What is the area of the base of the pyramid? Enter your answer in the box. Express your answer in radical form. In the story "The Open Window"Why, do you think, the author chooses to tell the reader more about Framtons thoughts than about what Vera is thinking? How would the story be different if the reader knew Veras thoughts during the story? Which statement best describes a similarity between fascist and communist governments?They both flourished during times of economic prosperity and social stability.They both supported international revolution.They both used terror and indoctrination to keep power.They both found allies among business leaders and wealthy landowners. The contour plot of is shown below. determine if the given quantity in each part is positive, negative, or zero. A synonym for arid is Question 1 multiple choice worth 5 points Read the opening lines of "Flame is a freckle food" by Emily Dickinson. Answer the questions that follows: flame is a freckle food upon a shifting plate the first line in this stanza features an example ofA.alliterationB.assonanceC.consonanceD.repetition 67 ,73 ,77,82,86,,86,91,98 find the median Jill sold half of her comic books and then bought sixteen more. she now has 43. how many comic books did she begin with? Methods of microbial control called ________ arrest the growth of microbes. Plz help to all the answers Match each discipline with the appropriate historian. Tiles Herodotus Gerda Hedwig Lerner Sima Qian Ibn Khaldun Simon Schama Pairs wrote the history of the Arabs and of the Berbers from North Africa arrowBoth first Chinese historian to separate history from astrology arrowBoth wrote several books on cultural and intellectual history arrowBoth the founder of womens history who also studied anthropology and archaeology in America arrowBoth regarded as the father of history because he was the first person to systematically study and write about historical events. arrowBoth PLEASE HELP ME!C.What organelle is missing from E. coli? ABC is reflected to form ABC . The vertices of ABC are A(3,1) , B(1,5) , and C(6,9) . The vertices of ABC are A(1,3) , B(5,1) , and C(9,6) . Which reflection results in the transformation of ABC to ABC ? reflection across the x-axis reflection across the y-axis reflection across y = x reflection across y=x If a radio station aired a personal attack against a candidate but refused to allow the same candidate the opportunity to respond to that attack on its station, the station would be violating the How many orbitals are there in the third shell (n=3)? express your answer numerically as an integer?