Mathematics Middle School

True or False?

When rainfall increases, the water level in the lake goes up. Rainfall is the independent variable in this situation. (4 points)

True
False
Question 2 (4 points)
(07.07)
Diana can earn money for the tickets she sells. Which of the following statements describes the variables in this situation correctly? (4 points)

a
The amount of money earned is the independent variable because it affects the number of tickets sold.

b
The amount of money earned is the dependent variable because it affects the number of tickets sold.

c
The number of tickets sold is the independent variable because it affects the amount of money earned.

d
The number of tickets sold is the dependent variable because it affects the amount of money earned.

Question 3 (4 points)
(07.07)
Calvin's plane is flying at a speed of 600 miles per hour. If y represents the distance the plane has traveled and z represents the time it has spent traveling, which of the following equations shows the relationship between y and z? (4 points)

a
y = 600 + z

b
z = 600 + y

c
z = 600y

d
y = 600z

Question 4 (4 points)
(07.07)
It costs $3.56 to buy a pack of pencils. Which of the following equations shows the amount of money needed, x, to buy k packs of pencils? (4 points)

a
x = 3.56k

b
k = 3.56x

c
x = 3.56 + k

d
k = 3.56 + x

Question 5 (4 points)
(07.07)
Christina built a small hot air balloon and recorded the distance it traveled. The table below shows the vertical distance traveled (v) during the first 4 seconds after starting (s).

Elapsed Time
(seconds) Distance Traveled
(feet)
1 1.2
2 2.4
3 3.6
4 4.8
Which of the following equations represents the relationship between the distance traveled and the elapsed time? (4 points)

a
v = 1.2s

b
s = 1.2v

c
v = 1.2 + s

d
s = 1.2 + v

Answers

Answer 1
I think it is false

Related Questions

please help me asap please show work

Answers

1. 85/ 6 = 14.666667
( this is is to see how much money she makes per hour)
2. 250/14.666667 = 17.0454542
(this is to see how many hours she needs to work to make $250)
3. 17.0454542 rounded to the nearest whole number is 17 !
So 17 hours to make $250


Please help thanks <3

Answers

Answer:

B

Step-by-step explanation:

Hello!

You look at the table and see what graph matches the data

0-4 = 5

We look for the graphs that of 0-4 at 5

That gives us B or C

We look at the next values

5-9 = 10

We look for the graph that has 5-9 equal to 10

That gives us the answer of B

The answer is B

Hope this helps!

Answer:

B

Step-by-step explanation:

Please help thank you pic down below

Answers

Answer:

D

Step-by-step explanation:

Its D I read all of them and It looks right

7th grade math help!!
Dani experimented with a dollar bill and the copy machine a dollar bills length is 6.1 inches and width is 2.6 inches, she reduced the dollar bill so its length was 80% of its original size. Dani then reduced the copy of the dollar bill a second time by making at 15% smaller than the copy, what is the new length of the second copy? NO LINKS PLS

Answers

Answer:

4.148 inches

Step-by-step explanation:

Add all of the numbers, and use percentages to figure.

Hope this helped, and please mark as Brainliest :)

Answer:

4.148

Step-by-step explanation:

Just add everything up and you will get your answer! :)

Hunter has x CDs. Hunter has 3 more CDs than Evan. They both have 13 discs in total. How many CDs does Evan have?

Answers

Answer: 10

Step-by-step explanation:

Hunter has 16 cds since he already had three more than him

PLS HELP I WILL GIVE BRAINLIEST!

Answers

Answer:

B

Step-by-step explanation:

just go for it

the answer should be B

plz help D: I need help!!

Answers

Mohameds would be stronger
Mohameds would be stronger.
That is because the unit rate for the amount up lemonade mix he puts in per water cup is greater than Sarah’s.
He puts 1 cup of lemonade mix in for every 2.5 cups of water.
But Sarah only puts 1 cup cup of lemonade mix in for every 5 cups of water.

Hope this helps :)

guys please help i don't understand. will mark brainliest! dont use any links-

Answers

Answer:

904.4

Step-by-step explanation:

V=πr2h=π·62·8≈904.77868

Answer:

The formula of Volume of a Cylinder is " V= [tex]\pi[/tex][tex]r^{2}[/tex][tex]h[/tex]" (pi* radius squared* height) which in this case is 904.779 rounded to the nearest tenth it's 904.8.

Step-by-step explanation:

I have no idea why that's not an option XD, but I'm 100% that my answer is right anyways good luck!

–4c+–6–4c+4c

Solve.




















































































...

Answers

Answer:

-4c-6

Step-by-step explanation:

-4c+(-6)-4c-4c

Group like terms

-4c-4c-4c-6

-8c-4c-6

-4c-6

Garret invested $12,000 at an annual interest rate of 6%. How much money would Garret have had to invest at 10% so that the combined interest rate for both investments was 7% over the year?

Answers

Step-by-step explanation:

To determine how much money Garret would have had to invest at 10% in order to achieve a combined interest rate of 7% over the year, we can set up the following equation:

(12000 * 0.06) + (x * 0.10) = (12000 + x) * 0.07

Let's solve this equation to find the value of 'x', which represents the amount Garret would have had to invest at 10%:

720 + 0.10x = 0.07(12000 + x)

Simplifying the equation:

720 + 0.10x = 840 + 0.07x

0.10x - 0.07x = 840 - 720

0.03x = 120

x = 120 / 0.03

x = 4000

Therefore, Garret would have had to invest $4,000 at a 10% annual interest rate in order to achieve a combined interest rate of 7% over the year.

Garrett would have to invest 4000 at 10%

Write an inequality to represent each
situation:

A. A number, n, is greater than 22

B. The value, v, does not equal 2.5

C. Sally’s age, a, is at most 15

Answers

i agree with the other person ^^^

What is the best way to display data if there is a wide range and we want to see individual data?

frequency table with intervals
stem-and-leaf plot
line plot
frequency table

Answers

Answer:
The correct option is;
b. Stem and leaf plot

Step-by-step explanation:
A stem-and-leaf plot shows the data shape and the densities of the different classes in a graphical form such that the information in the data such as the data characteristics are self displayed by the data numbers arranged in the stem-and-leaf plot. The stem-and-leaf plot keeps the raw numerical data, in the form they were obtained and by their arrangement, outliers are easily spotted.
answer: stem-and-leaf plot
I took the test!!

Evaluate the expression.

║4/13║

Answers

Answer:

4/13

Step-by-step explanation:

In absolute value, it is showing distance. Whenever something is in absolute value, it is turned positive.

here, Inside the absolute value brackets, we have positive 4/13. Positive 4/13 undergoes no such change, because there are no other terms, and no negatives.

absolute value of 4/13 is 4/13

Answer:

[tex]\frac{4}{13}[/tex]

Step-by-step explanation:

those lines around the equation mean that the answer is always positive, this is called absolute value

Please answer I will give your brainliest

Answers

Answer:

I think the answer is 113

Step-by-step explanation:

Cause every angle does look the same on each side

If you have 2+2^2 and/or 5^2s when s=14 how much will you have???

Answers

Step-by-step explanation:

2+2^2=6

5^2(14)=25(14)=350

350+6=356

Hope that helps :)lol

Answer:

356

Step-by-step explanation:

2+2^2=6

5^2(14)=25(14)=350

350+6=356

What is (-3, -14) and (0, -9) written in slope intercept form? Thank you!

Answers

Answer:

Y= 5/3x + -9

Step-by-step explanation:

Well its

y=mx+b

m is slope

B is y intercept

To fidn y intercept, just make sure the X value of any coordiante given is 0 and the y value is not 0. So basically anything with (0, y), thats your y intercept.

Slope Is just

(y2-y1) / (x2-x1)

Answer:

y = 5/3x - 9

The equation for slope-intercept form would be y = mx + b.

Where y would be the total, m would be the slope, and b would be the y-intercept.

Franco read 5/8 of a chapter of his history book in 2/5 of an hour. At this rate, how many chapters of his history book can he read in 1 hour?

Answers

Answer:

12.5/8 or 1  4.5/8 so the simplified answer could be 1 2.25/4

Step-by-step explanation:

multiply 5/8 by 2.5 becuase 2x2.5=5

so you want to get 5/5 for a full hour

5x2.5=12.5 and keep the donominator the same

then simplify so 1 4.5/8

please mark brainliest:D

Dani experimented with a dollar bill and the copy machine a dollar bills length is 6.1 inches and width is 2.6 inches, she reduced the dollar bill so its length was 80% of its original size. What is the length of the copy of the dollar bill? please show how you figured it out. NO LINKS

Answers

Answer:

The length of the copy of the dollar bill is 4.88 inches in length and 2.08 inches in width.

Step-by-step explanation:

If Dani wants to make a smaller copy of a dollar bill and reduce its size to 80%, you will need to multiply the dollar bills original length by 8%.

80% = 0.8

0.8 x 6.1 = 4.88

80% = 0.8

0.8 x 2.6 = 2.08

8% I think not for sure! Hope this helped.

What is the area of the figure below?


40 mm2
80 mm2
88 mm2
96 mm2

Answers

The answer for this question is 88mm2
88 mm2 that the answer

When comparing reading a book to listening to an audio recording of the same book, the book _________.(1 point)

provides the spoken emotions of the characters.

requires the audience to use mental pictures.

emphasizes factors that affect the experience of the audience.

displays the facial expressions of the characters.

Answers

Answer:

i think it's c

What is the area of a parallelogram that has a base of 412 in. and a height of 214 in.?
NO LINKSSSSSSSSSSSSSSSSSSSS!!!!!!!!!!!

Answers

Answer:

88168in²

Step-by-step explanation:

:)

Answer:

area = 88,168 in²

Step-by-step explanation:

area = 412 x 214 = 88,168 in²

The circle graph shows how Lila spent her after-school time during the month of October.



Part A

If Lila spent a total of 50 hours on these activities in the month of October. How much time did she spent at Yoga?

Answers

Answer:

14 hours

Step-by-step explanation:

percent of a number

28% of 50

(OR, there is another way)

you could switch it and do 50% of 28, either way you get the same answer.

50% of 28 is 14.

***if there is any percent problem where it is something like 22% of 100 or 78% of 50, you can flip it to say 100% of 22 or 50% of 78.

just a helpful hack!

Answer:14 h

Step-by-step explanation:

GIVING BRAINLIEST NO LINKS
In the data set shown below, what is the value of the quartiles?

{1.3, 1.5, 1.7, 2, 2.5, 2.7, 2.9, 3, 3.1}

A.Q1 = 1.6; Q2 = 2.5; Q3 = 2.92
B.Q1 = 1.7; Q2 = 2.5; Q3 = 3
C.Q1 = 1.7; Q2 = 2.5; Q3 = 2.9
D.Q1 = 1.6; Q2 = 2.5; Q3 = 2.95

Answers

Answer:

The answer is B

Step-by-step explanation:

sub scribe to my you tube channel

theonetheonlyivan1

Answer B is right is jus got a 100

Step-by-step explanation:

Don't guess!

I will mark brainliest if its correct!

Don't answer if you don't know!

Also no links!

Answers

Answer:

The answer is Graph F

Graph F is the answer because it says that every hour Juana spends reading books, she reads 0.25 hours reading magazines. This means that in 2 hours she's spent 0.5 hours reading magazines, and the data points continue in that order.

Answer:

f

Step-by-step explanation:

Find the distance between (-3, 2) and (-7, 0). Round to the nearest tenth if needed.
A.6
B.9
C.20.3
D.4.5

Answers

D. 4.5 hope this helps
4.5✋ but it could also be 4.5 which is d

pls help its for a grade and i need to up my grade

Answers

Answer:

l

Step-by-step explanation:

TJ is investing his birthday money in a savings account that pays 3% interest. If he invests $200, how much will he have at the end of 9 months?
A. $204.50
B. 450.00
C. 245.00
D. 540.00

Answers

Answer:

A. $204.50

Step-by-step explanation:

The answer to the question is A

The sides of a square are reduced by 2 inches. the new area is 20 square inches. Set up and solve an equation to find the original length of the square.
USE THE SQUARE ROOT PROPERTY!!!!!

Answers

Answer:

Step-by-step explanation:

[tex](x - 2)^{2} = 20[/tex]

[tex]x - 2 = \sqrt {20}[/tex]

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

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

[tex]x = 6.47 inches (3sf)[/tex]

The coordinates of the four vertices of the rectangle are (1,-1), (4,-1), (4,1), and (1,1). The perimeter of the rectangle is how many units?

Answers

Answer:

10

Step-by-step explanation:

4-1=3 (length of base)

-1-1=-2 (absolute value of height is 2)

3+2+2+3=10

Pls Help Me.
Use the table to solve the equation −6x>18
Table:
x: -5 -4 -3 -2 -1
-6x: ? ? ? ? ?
The solution of the inequality is: __________

Answers

Answer:

x>-3 because that's how it goes

X>-3 is the any sorry if wrong
Other Questions
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