Mathematics Middle School

Help me with this too
:-(

Answers

Answer 1

Answer:

Step-by-step explanation:

what is it you don't understand about this ?

the question only asks about a wallpaper border, which is a strip.

so, we don't need any areas, we only need the perimeter of the room.

that means we need to add up all sides.

the little "missing corner" on the top right would hurt us for the area of the room, but not for the perimeter.

just imagine, the room would be a perfect rectangle.

how long would the top side be ?

right, identical to the bottom side : 8 ft.

and how long would the right side be ?

right, identical to the left side : 4 yds.

now, look closely, did we lose (or add anything) of/to the side lengths by the missing corner up there ?

we lost area, but ... we did not lose perimeter distance !

i know, this sounds funny, but it is true. look again.

the short right side plus the long right side are together still the same length as the left side : 4 yds.

and the long top side and the shorter lower top side together are still the same length as the bottom line : 8 ft.

attention trap : the left and right sides are in yds.

1 yd = 3 ft !

so, long story short, the perimeter is as for a normal rectangle

2×length + 2×width = 2×8 + 2×4×3 = 16 + 8×3 = 40 ft

and the border costs $3 per ft, so we get

3×40 = $120

as the total price for the border.

Answer 2

I believe it would be c

Related Questions

Before you multiply or divide a fraction by a mixed number, you have to make sure they are both in the same___________?

Answers

Answer:

Step-by-step explanation:

form. Meaning you need make both fractions improper

Make sure each number is turned improper.

HELP ASAP There is an upcoming election in Deyvi's town. deyvi asks a random sample of voters whether they plan to vote for the current mayor against the current mayor, or are undecided. his results are shown in the table. use his results to predict how many people will be for, against, and undecided in a group of 2,000 voters. Show your work.

Answers

Answer:

1,000 people will be for, 480 people will be against, and 120 people will be undecided.

Step-by-step explanation:

My brother who is in high school helped me.

(pay attention to the nimbers) A submarine must descend at an average rate of at least 10 feet per minute for 5 minutes. The table shows how many feet the submarine descends in the first 4 minutes. How many feet must the submarine descend in the fifth minute? (show your work)

Answers

Submarine must descend by 12 feet in the fifth minute.

Average of the data:Average of a data set is calculated by dividing the sum of terms by the number of the terms of the set.

From the table given in picture,

Let the distance descended by submarine in 5th minute = x feet

Average distance descended by the submarine = $\frac{\text{Total distance distended}}{\text{Duration or time}}$

= $\frac{8+10+8+12+x}{5}$

= $\frac{38+x}{5}$ feet per minute

Statement given in the question → "Submarine must descend at an average rate of at least 10 feet per minute"

So the inequality for the statement will be,

$\frac{38+x}{5}\geq 10$

38 + x ≥ 50

x ≥ 50 - 38

x ≥ 12

Therefore, submarine must descend 12 feet in the 5th minute.

Learn more about the average here,

https://brainly.com/question/14194794?referrer=searchResults

I NEED HELP FAST please

Answers

a) The step where Mardie first made an error is given as follows: Step 1, as the negative sign means that the sign of each term inside the parenthesis should be changed.

b) The correct expression is given as follows: -8.6b + 28.

How to simplify the expression?

The expression in the context of this problem is defined as follows:

(-3.78b + 12) - (4.82b - 16).

The negative sign before the parenthesis means that the sign of each term inside the parenthesis is changed, hence:

-3.78b + 12 - 4.82b + 16.

This is the step where Maddie made the first error.

Then, to simplify the expression, we combine the like terms, as follows:

b(-3.78 - 4.82) + 12 + 16 = -8.6b + 28.

More can be learned about simplification of expressions at https://brainly.com/question/723406

#SPJ1

The zoo is hosting a special evening event for visitors ages 12 and up. During the event, the price of popcorn is reduced from $3 per bag to $2 per bag. If 843 bags of popcorn were sold during the event, which integer expresses the total amount of money the zoo lost by reducing the price?

−$843

−$1

−$2

Answers

Answer: -$843

Step-by-step explanation:

843 x 3 = $2529

843 x 2 = $1686

2529 - 1686 = $843

The zoo makes $2529 on a regular night, but because there is a discount, they make $1686. The amount of money is the difference between the two totals. Therefore, the total amount of money the zoo lost by reducing the price is $843.

843

Because the difference was 1, just do -1x843 to get -843

Please help me answer.

Answers

Answer: First blank is 15 then 28 then 25 in the last blank.

Step-by-step explanation:

On the left side column it is going up by 5 and the right column is going up by 7.

For the first column it will go 5,10,15,20,25
And second column is 7,14,21,28,35

2, 3, 5, 9, 17, 22, 31, 39

Regina kept track of the points she scored during her team’s first eight basketball games. What is Regina’s mean score?
Responses
A 3939
B 1616
C 3737
D 1313
E 17

Answers

Answer:

Mean = 16

Step-by-step explanation:

MEAN can be find bg the sum of all score divided by the amount of the score.

Mean = total amount / number of amount

Total amount = 2 + 3 + 5 + 9 + 17+ 22 + 31 + 39

= 128

number of amount = 2, 3, 5, 9, 17, 22, 31, 39

= 8

Then we can calculate mean as

Mean = 128/8

Mean = 16

16
2+3+5+9+17+22+31+39=128
128/8=16

I'm super bad at these :(

Answers

Answer:

721.1 in/60.1 ft

Step-by-step explanation:

Assuming that the ball travels in a straight line from the release point to the corner pin, we can use the Pythagorean theorem to find the length of the bowling lane.

Let x be the length of the bowling lane in inches. Then we have:

x^2 = 40^2 + 720^2

x^2 = 1600 + 518400

x^2 = 520000

x = sqrt(520000)

x ≈ 721.1 inches

Rounding to the nearest tenth, the length of the bowling lane is approximately 721.1/12 = 60.1 feet.

Therefore, the length of the bowling lane is approximately 60.1 feet.

Answer:

The length of the bowling lane is 718.9 in

Hope this helps!

Step-by-step explanation:

The question is probably asking for the height of the triangle ( b ) so a is 40 in and c is 720 in : * use formula; c² - a² = b² *

720² - 40² = b²

518400 - 1600 = b²

516800 = b²

b = $\sqrt{516800}$

b = 718.888030... in

( c is the hypotenuse and the length for that is already given, it's 720 in )

Bridget drew the trend line shown in the following scatter plot.
Which statement best explains whether the trend line is a good fit for the data?

1. The trend line is a good fit for the data because the data represent a positive association, and the line has a positive slope.
2. The trend line is a good fit for the data because it passes through two of the data points.
3. The trend line is not a good fit for the data because most of the data points are below the trend line.

Answers

A:The trend line is a good fit for the data because the data represent a positive association, and the line has a positive slope.

Step-by-step explanation:

Hope this helps

1. The trend line is a good fit for the data because the data represents a positive association, and the line has a positive slope.

Brainliest for whoever gets this right !!!

Answers

Answer :

$(x1 \: \: y1) = ( - 2 \: - 5) \\ (x2 \: \: y2) = (10 \: \: 7)$

I hope it helps :)

PLEASE HELP ME, LOOK AT THE PICTURE

no wrong answers please :(

Answers

Answer: 1/9

Step-by-step explanation:

There are 3 possibilities of it landing on 7 (greater than 6), is 1/3 alone. Then adding on landing on 5, right after, you have 1/9.

1/9 I think I did not say certain

Some students recorded how many minutes they spent on the phone in one day. They put the results in a Stem-and-Leaf Plot.

What is the mean number of minutes spent on the phone?

Answers

Answer: 31

Explanation:

The data from the stem-and-leaf plot is:

10,

24,25,26,

30,30,32,33,

40,45,46

Add up those values

10+24+25+26+30+30+32+33+40+45+46 = 341

Then divide over n = 11 which is the sample size.

341/11 = 31 is the arithmetic mean.

Answer:

341/11 = 31 is the arithmetic mean.

Step-by-step explanation:

Create an equation that could be used to model the following scenario:
Alana spent half of her monthly income to pay for her cell phone bill. She then had to spend $38 to put gas in her car. She now has $17 left. How much money did she start the month with?

Answers

Answer: ( 38+17)x2=N

the answer in this equation is 110

Step-by-step explanation:

Here is a graph for one of the equations in the system of two equations.
The solution to the system is (3,0). Select all the equations that could be the other equation in the system.

look at the image shown below

Answers

Answer:

the 3rd one.

Step-by-step explanation:

this is because as the diameter of the x axis and y axis change all the answers change.

Natara is training to run a 26-mile marathon. Each week, she increases the distance she runs on her training days. Over the first three weeks, her training distances have been 5, 8, and 11 miles. If she increases her distance at the same rate each week, in what week will Natara first run 26 miles?

Answers

Answer:

Week 8

Step-by-step explanation:

For each week add 3 miles until you reach 26 miles

Week 1:5

Week 2:5+3=8

Week 3:8+3=11

Week 4:11+3=14

Week 5:14+3=17

Week 6:17+3=20

Week 7:20+3=23

Week 8:23+3=26

Hope this answers your question :)

help me again plsss //////////////

Answers

Answer:

I believe it's A.

Step-by-step explanation:

The formula for the perimeter of a rectangle: 2(l + w)

Since we have not found x, you would assume it hasn't been doubled yet by the 2. Since the width = 14, it is doubled to 28.

Next, we know from looking at the formula that l and w are added together, so inside the brackets is an addition problem. ( + 28)

Since we know that l = x and l has to be doubled, it will be = (2x +)

If we combine those two equations together it is =

2x + 28 = 48

The Mitten Mart sells winter gloves and mittens. Last weekend, the store sold 5 pairs of gloves for every 4 pairs of mittens. If the store sold 60 pairs of gloves last weekend, how many pairs of mittens did it sell?

Answers

Answer:

the answer is 48

Step-by-step explanation:

because if the store sells 5 pairs of gloves every 4 paurs of mittens and the sold 60 pairs of glove we can find out that 5x12 is 60 so thrn you would times 12 by 4 and that equals 48

Determine and prove which lines are
parallel
I’ll give Brainliest. Due Soon.

Answers

Answer:

line b, c are parallel line hope it helps

Answer:

lines t and s are parallel because 108=108

line is not parallel to lines a and b because 82 is not equal to 72

lines a and b are parallel because 72 is supplementary to 108

Step-by-step explanation:

What is the solution to -8(5-3n+7n)=-40+24n-56n= ?

Answers

Solution:

Note that:

Given equation: -8(5 - 3n + 7n) = -40 + 24n - 56n

Simplify both sides:

-8(5 - 3n + 7n) = -40 + 24n - 56n=> -40 + 24n - 56n = -40 + 24n - 56n

Since both sides are equal, this equation has infinite solutions.

-8(5-3n+7n)= -40+ 24n -56n
-(8•5)-(-8•3n)-(8•7n)=-40+ 24n -56n
-40+ 24n -56n =-40+ 24n -56n

The tape diagram below represents 100\%100%100, percent.

What percent is represented by the shaded area?

Answers

Answer:

Step-by-step explanation:

Well the answer is 40 cause you count by 20 so if you in 20 t o times then you would get 40 percent

Your answer would be 40.

A pole that is 3.2m tall casts a shadow that is 1.14m long. At the same time, a nearby tower casts a shadow that is 39.75m long. How tall is the tower? Round your answer to the nearest meter.

Answers

Answer:

112 meters

--------------------------------

The heights and shadows are proportional since they form similar triangles.

Set equal proportions and solve for the missing length:

H/h = S/s, where H and h represent heights, S and s - shadows.H/3.2 = 39.75/1.14H = 3.2*39.75/1.14H = 112 (rounded)

Answer:

112 meters

Step-by-step explanation:

3.2/1.14 = x/39.75

3.2/1.14 = 2.81

2.81 * 39.75 = 111.57 = 112

20 POINTSSSSSSSSSSSSSS
Aakesha has two bags of marbles. The first bag contains 5 red marbles, 6 blue marbles, and 4 green marbles. The second bag contains 4 red marbles, 2 blue marbles, and 3 green marbles. Aakesh will randomly select one marble from each bag. What is the probability that Aakesh will select a red marble from each bag? A. 2/9 B. 4/9 4/27 D. 1/3

Answers

The answer is B

Anbsbdhehbddbdnsbsnsn my reply has to be more than 20 letters

Answer: 4/9

Step-by-step explanation:

Please help asap. Algebraic expressions.

Answers

Answer:

D+8t-48

_____________

Step-by-step explanation:

Answer:

T+1/8 d - 6

I did rewrite the expressions hopes this help

Solve for n.
–18.4 = 3.2(n + 3) + 0.8

please help!!

Answers

Answer: n= -9

Step-by-step explanation:

-18.4 = 3.2(n + 3) + 0.8

-18.4 = 3.2n + 9.6 + 0.8

-18.4 = 3.2n + 10.4

-28.8 = 3.2n

-9 = n

Solve for N
-18.4=3.2(n+3)+0.8
n=9

Scientists are preparing two satellites to be launched. The satellite, Space Explorer B, flies 79200 miles in 18 hours. The graph below represents the number of miles,

Answers

Answer:

4400

Step-by-step explanation:

I think this is right sorry if its not. Have a good night, sorry if im late.

Answer:

4600 miles

Step-by-step explanation:

You want to know the difference in miles per hour between a satellite traveling 45000 miles in 5 hours and one traveling 79200 miles in 18 hours.

Miles per hour

The speed in miles per hour is the ratio of miles to corresponding hours. The difference in miles traveled in one hour will be ...

A speed - B speed

45000 mi/(5 h) - 79200 mi/(18 h) = 4600 mi/h

Explorer B travels 4600 fewer miles in an hour than Explorer A.

<95141404393>

lets evaluate (3^6)^1/2

step by step.

Answers

Answer:

Step-by-step explanation:

$\bigg(3^6\bigg)^{\frac{1}{2}}$

use

$(a^n)^m=a^{n\cdot m}$

$\bigg(3^6\bigg)^{\frac{1}{2}}=3^{6\cdot\frac{1}{2}$

simplify

$6\!\!\!\!\diagup^3\cdot\dfrac{1}{2\!\!\!\!\diagup_1}=3\cdot\dfrac{1}{1}=3\cdot1=3$

other

$6\cdot\dfrac{1}{2}=\dfrac{6\cdot1}{2}=\dfrac{6}{2}=3$

therefore

$\bigg(3^6\bigg)^{\frac{1}{2}}=3^{6\cdot\frac{1}{2}}=3^3=\underbrace{3\cdot3\cdot3}_{3}=27$

$\displaystyle\bf \boldsymbol{\boxed{(a^n)^m=a^{n\cdot m}}} \\\\(3^6)^{\frac{1}{2}} =3^{\frac{6}{2} }=3^3=\boldsymbol{{\boxed {27}}}$

There are 364 people that have to go from the airport to the hotel. One van can transport 12 people. How many vans are needed?

A. 4
B. 30
C. 31
D. 32

Answers

Answer:

Step-by-step explanation:

all you need to do is divide please let me know if the answer is incorrect

Answer:

Technically speaking: 31. (Or C.)

Step-by-step explanation:

We can solve this quite simply by dividing 364(amount of people) by 12(amount of people per van).

Which would look like this: 364/12=30.3333

The reason being for it being 31 and not 30 is because you would need one extra van to take the remaining 4 people that was not picked up by the 30th van, otherwise only 360 people would've been picked up.

please solve it ASAP

Answers

Answer:

Step-by-step explanation:

the student is mostliky to have d

1) How is circumference different than area?
2) the interest that you earn on a savings account of $2,000 after year one is $16. What is the annual interest rate?

Answers

Answer:

0.8? maybe

Step-by-step explanation:

0.5 is the correct answer

So, if I have 30 slides to do, and seven days to do them, how many slides will I do each day?

Answers

Answer: Roughly 4.3 (You would want to do 5 a day, which will make you not need to work the seventh day, if the answer is even.)

Step-by-step explanation:

30 (slides) divided by 7 (days) = 4.28571... = round up to 4.3 or 5

30 divided by 7 is about 4.29 so I would do about 5 slides a day with some days you do 4 slides

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Help me with this too:-(​

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Help me with this too
:-(