Lydia is playing Galaxy 8RX. After three misses, the game is over. Last week, Lydia kept track of how long her games lasted. Hse msde a line plot of her data. Lydia said,"My best time is 2 3/4 minutes longer than my worst time because 4 1/4-1 1/2=2 3/4.
Is subtraction the correct operation to compare Lydia's best and worst times?Explain.

Are Lydia's calculations accurate?Show how you know.

In the line plot, what do the numbers Lydia subtracted represent?

Does Lydia's conclusion make sense? How did you decide? If not, what can you do to improve her reasoning?

Answers

Answer 1

Answer:

Yes ; Yes ;

Step-by-step explanation:

1.) To obtain the difference between the best and worst game times in the scenario above, we use the subtraction operator, hence. Lydia is correct.

4 1/4 - 1 1/2

17/4 - 3/2

(17 - 6) / 4

11 /4

= 2 3/4

The subtracted numbers represent the duration of each of the three times game was played


Related Questions

The sum of two integers is 21. Fifteen less than double the square of the smaller integer is equal to the larger

integer. What are the two numbers?

Answers

Answer:

2x^2+x-36=0

(4,0)

2*4^2+4-15=21

Step-by-step explanation:

The addition is one of the four fundamental mathematical operations. The two integers are 4 and 17.

What is Addition?

The addition is one of the four fundamental mathematical operations, the others being subtraction, multiplication, and division. When two whole numbers are added together, the total quantity or sum of those values is obtained.

Let the two unknown integers be represented by x and y, where x

Given that The sum of two integers is 21. Therefore, we can write,

x + y = 21

y = 21 - x

Also, Fifteen less than double the square of the smaller integer is equal to the larger integer.

2(x²) - 15 = y

Substitute the value of y from the first equation,

2(x²) - 15 = 21 - x

2x² - 15 = 21 - x

2x² + x - 15 - 21 = 0

2x² + x - 36 = 0

2x² + 9x - 8x - 36 = 0

x(2x + 9) -4(2x + 9) = 0

(x-4)(2x+9) = 0

x = (-9/2), 4

Since it is given that the number are integers, therefore, the only option is 4.

Further, the two integers are,

x = 4

y = 21 - x = 21 - 4 = 17

Hence, the two integers are 4 and 17.

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I'll give brainliest.

Answers

Answer:

is this algebra

Step-by-step explanation:

Answer:

1.)

A.) The graph does represent a proportional relationship because if you calculate the slope, it's 2/3, which is consistent throughout the line and with the given points.

Slope calculation:

[tex]\frac{y2-y1}{x2-x1} \\\\\frac{6-4}{9-6} \\\\\frac{2}{3}[/tex]

B.) The coordinate (0,0) represents that no laps have been completed nor has the time started

C.) The coordinate I chose is (6,4). It represents that 4 laps were completed in 6 minutes

2.) The values to represent a proportional relationship because once calculating the slope, which is 13, you can try it with other points. Even though there's some values missing between (6,78) and (10,130), the slope remains the same.

Slope Calculation:

[tex]\frac{y2-y1}{x2-x1} \\\\\frac{130-39}{10-3} \\\\\frac{91}{7} \\\\\frac{13}{1}[/tex]

3.)

A.) The constant of proportionality is 7/4 or 1.75

B.) y = 7/4x

4.) She'll run 8 miles because since 3/4 of an hour equates to 6 miles and there's 1/4 missing, 2 miles is 1/3 of 6 miles and 1/4 is 1/3 of 3/4 , so 1/4+1/4+1/4 = 3/4. She can run 8 miles (4*2) in 1 hour (4*1/4 hour)

what is the circumference of a circle that’s 9cm

Answers

Answer:

C=2πr hope this helps!! and have a great day!!!

Step-by-step explanation:

Answer:

I can't give you the answer to this because you didn't specify whether or not 9 was the radius or the diameter. could you comment back and ill give you an answer for this?

Step-by-step explanation:

The park i 45 feet long . How long is park yard ? (1yard=3feet)

Answers

135 feet is the length of the yard

Answer:

135 yards

Step-by-step explanation:

There are 135 yards in 45 feet.

Our information:

The park is 45 feet long

There is (3 feet= 1 yard)

Since there is 3 feet in 1 yard. You have to multiply 45 x 3.

So, The answer is 135 yards.

Tell whether -2 is a solution of the
inequality 6g – 14 > - 21

Answers

Answer:

3(4g + 6) = 2(6g + 9)

Distribute 3 and 2 inside their respective parentheses.

12g + 18 = 12g + 18

Step-by-step explanation:

(2g+3)(5g^2-6)

        or  (5g^2-6)(2g+3)

A train is traveling at 30 miles per hour.

How long will it take the train to travel 180 miles?
FREE BRAINLIEST!!!

Answers

Answer:

Six hours

Step-by-step explanation:

Answer:

6 Hours

Step-by-step explanation:

If the train travels at 30mph for 6 hours it will have traveled 180 miles.

30 • 6 = 180

I hope this helps

2 points
Daniel had $25 to spend at the fair. If it costs $3 per ride plus $4 for the
admission to the fair, Write and solve an inequality to find the maximum
number of rides Daniel can go on? *
In inequalities

Answers

Answer:

well the answer is 7 rides

Step-by-step explanation:

25 - 4

=21

21÷3

=7

(p.s working might not be in the right format but its right)

Lincoln invested $440 in an account paying an interest rate of 5\tfrac{7}{8}5 8 7 ​ % compounded continuously. Robert invested $440 in an account paying an interest rate of 5\tfrac{1}{2}5 2 1 ​ % compounded daily. After 11 years, how much more money would Lincoln have in his account than Robert, to the nearest dollar?

Answers

Answer: $34

Step-by-step explanation:

After 11 years,188.76 more money would Lincoln have in his account than Robert

What is Percentage?

percentage, a relative value indicating hundredth parts of any quantity.

Given,

Lincoln invested $440 in an account paying an interest rate of 7 ​% compounded continuously.

Robert invested $440 in an account paying an interest rate of 5 ​ %.

We need to find how much more money would Lincoln have in his account than Robert in 11 years.

[tex]A=Pe^{rt}[/tex]

For Lincoln:

P=440,

r=7%=0.07

t=11

A=440e⁰⁰⁷ˣ¹¹

A=440e⁰⁷⁷

A=949.96

For  Robert,

P=440,

r=5%=0.05

A=440e⁰⁰⁵ˣ¹¹

A=440e⁰⁵⁵

A=761.2

Now find the difference of Albert and Robert money

949.96-761.2

188.76

Hence, After 11 years,188.76 more money would Lincoln have in his account than Robert

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1



HELP
A rectangular prism with a volume of 4 cubic units is filled with cubes with side lengths of
unit.
1
How many
unit cubes does it take to fill the prism?
3

Answers

Answer:

Answer. Each cube with side lengths of 1/4 have a volume of (1/4)3 which means each cube's volume is 0.015625 cubic units.

Step-by-step explanation:

Answer. Each cube with side lengths of 1/4 have a volume of (1/4)3 which means each cube's volume is 0.015625 cubic units.

ANSWER ALL QUESTIONS PLZ:
At the park, the ratio of birds to squirrels was 4 to 5. If there were 90 birds and
squirrels at the park altogether, how many were squirrels?

Sally found that the 12 inches from her wrist to her should was 1/5 of her total height.
What was Sally’s total height in inches?

The vertices of ∆ABC are A (0,0), B (6,0) and C (6,6). Draw the triangle and its
image ∆ A’B’C’ translated to the right 3 units. What are the coordinates of the
vertices of ∆ A’B’C’?

Answers

112.5
60
Hope you know how to use a graph
A(3,0) B(9,0) C(9,6)

Answer:

50 squirrels, 60 inches, A'(3,0), B'(9,0), C'(9,6)

Step-by-step explanation:

Given that the ratio of birds to squirrels is 4:5 and there are 90 altogether, define a variable [tex]x[/tex], and [tex]4x + 5x = 90[/tex], and [tex]x = 10[/tex]. Since squirrels are the [tex]5x[/tex] part, [tex]5\cdot10 = 50[/tex] squirrels.

1/5 of her total height is 12 so let's say her total height is [tex]h[/tex] and [tex]\frac{1}{5}h = 12[/tex].

Solve for [tex]h[/tex] to get 60 inches.

Translating this triangle to the right 3 units just means adding 3 to all the x coordinates of the vertices. This gives you A'(3,0), B'(9,0), C'(9,6).

Help please!! Thanks a lot I’m advance

Answers

The answer is the 4th option.

Please help due in 10 minutes!!!!!!!

Answers

Answer:

23.42 ft is the perimeter of the hole that should be cut in the wall.

A truck that is 10 ft. by 12 ft. by 8 ft. carries cube shaped boxes that have a
length of 1.5 ft. How many of these boxes can this truck hold?

Answers

Answer:

284.4

Step-by-step explanation:

Divide all numbers by 1.5. example: (10)1.5(12)1.5(81.5= 284.444444 but I rounded it to 284. You're welcome

284 boxes in the shape of the cubes can be fitted in the truck.

If a truck is fitted fully with the cubes, volume of the truck will be equal to the volume of cubes to be fitted.

Dimensions of the truck given in the question,

Length = 10 feet, width = 12 feet and height = 8 feet

Since, volume of a cuboid (shape of a truck) is given by the expression,

Volume = Length × Width × Height

Therefore, volume of the truck = 10 × 12 × 8

                                                   = 960 feet³

Volume of a cube is given by the expression,

Volume = (side)³

Therefore, volume of the cube with side length 1.5 feet will be,

Volume of a cube = (1.5)³

                              = 3.375 cubic feet

Let the number of cubes fitted in the truck = x

Therefore, volume of 'x' cubes = (3.375x) feet³

Since, volume of the truck = Volume of the cubes fitted

3.375x = 960

x = [tex]\frac{960}{3.375}[/tex]

x = 284.44

x ≈ 284

     Therefore, 284 boxes in the shape of the cubes can be fitted in the truck.

Learn more,

https://brainly.com/question/14912884

Angle is 51° what's angle x

Answers

Answer:

129

Step-by-step explanation:

HELP I NEED HELP ASAP

A. A student’s math grade decreases approximately 3 points for every 10 minutes of watching television.

B. A student watches approximately 3 minutes less television for every 10 points gained in their math grade.

C. A student watches approximately 3 minutes more television for every 10 points gained in their math grade.

D. A student’s math grade increases approximately 3 points every 10 minutes of watching television.

Answers

Answer:

B. A student watches approximately 3 minutes less television for every 10 points gained in their math grade.

Anyone know the answer?!

Answers

Answer:

C

Step-by-step explanation:

sorry if its wrong

PLEASE HELP ME PLEASE

Answers

Answer: Your answer will be 1/2

Which of the following are solutions to the equation below?
Check all that apply.
9x2 - 2x + 25 = 8x2 + 8x

A.25
B.4
C.5
D.-5
E.-3
F.6

Answers

Answer:

         C. 5

Step-by-step explanation:

[tex]9x^2 - 2x + 25 = 8x^2 + 8x\\\\9x^2 - 2x + 25 - 8x^2 - 8x = 0\\\\x^2-10x+25=0\\\\x^2-2\cdot x\cdot5+5^2=0\\\\(x-5)^2=0\\\\x-5=0\\\\x=5[/tex]

A company finds that if it charges e dollars for a cell phone, it can expect to sell 1,000 - 2x phones. The company
uses the function - defined by r(t) = < (1,000 – 22) to model the expected revenue, in dollars, from selling cell
phones at dollars each.
Use graphing technology to graph the function r. At what price should the company sell their phones to get the
maximum revenue? Explain your reasoning.

Answers

Answer: the company should sell there phones for 250

Step-by-step explanation: took the test

Here are two rectangles.
6 cm
9 cm
8 cm
12 cm
Complete this sentence.
The two rectangles are similar and the scale factor is​

Answers

Answer:

[tex] \boxed {\frac{2}{3}} [/tex]

Step-by-step explanation:

The two rectangles are similar and the scale factor is [tex] \boxed {\frac{2}{3}} [/tex]

The hypotenuse of a right-angled triangle is 61 cm. If one of the remaining two sides is
11cm, find the length of other side.

Answers

Answer:

60cm

Step-by-step explanation:

the length of other side = sqrt (square root) hypotenuse^2 - the length of thrid side^3 = sqrt 61^2 - 11^2 = sqrt 60^2 =  60

PLEASE HELP! WILL GIVE BRAINLIEST!
Solve for x

Answers

Answer:

It would be C  , 7 root 2

Step-by-step explanation:

you would have to find the Sin of 45. So you set up a proportion ( you can do this on a calculator)

sin 45=7/x and then calculate that and solve.

If you dont have a calc then the sin of 45 is 1/root2

I need help with this question plsss
Thx

Answers

I think it’s -4 but if I’m wrong sorry

Answer:

4

Step-by-step explanation:

The expression 16t2 represents the distance in feet an object falls after t seconds. The
object is dropped from a height of 906 feet.
Write an expression representing the height of the object in feet t seconds
after it is dropped.
0906 - 16t^2
906 + 16t^2
0906 (16t^2)
0906/16t^2

Answers

Answer:

824 feet

that is becuase the greastist common factor adds up to that

1. 64 feet

2. 842 feet

3. y = 906 - 16t^2

two Friends are collecting pop can tabs. Natasha has 250 more pop can tabs then Christine. together they have collected 880 pop can tabs. How many pop can tabs has each friend collected 

Answers

Answer: 2393

Step-by-step explanation:

Determine the value of x and y in the following systems of equations. 3x+y=9 x-y=-1

Answers

Answer:

x=2, y=3. (2, 3).

Step-by-step explanation:

3x+y=9

x-y=-1

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

4x=8

x=8/4=2

2-y=-1

y=2-(-1)=2+1=3

If 0 = 1/4 x 10 + b and 20 = 1/4 x 90 + b, what is b?
(Hint: both values of b are the same)

Answers

Answer:

B= -5/2

Step-by-step explanation:

i added the screen shot of the step by step solution , its hard to do this on a laptop

*mark brainlest*

A science fair has 180 entries. There
are 72 entries from sixth grade
students.

Answers

Answer:

40%

Step-by-step explanation:

Total entries=  180

Entries from 6th grade= 72

Percentage = 72/ 180 x 100= 40%

Hope its right!!!

HELP ASAP RN PLEASE!!

200 people got an email 37 people clicked on it how do you get 18.5%

Answers

Answer:

37/200

Step-by-step explanation:

Event/Sample Space = .185 = 18.5%

Answer:

Step-by-step explanation:

If 37 people out of 200 people opened an e-mail, you can write it as 37/200.

The number above the bar is the numerator: 37

The number below the bar is the denominator: 200

Divide the numerator by the denominator to get fraction's value:

Val = 37 ÷ 200

Val = 0.185

To calculate the percent value:

0.185 =  (Calculate fraction's value.)

0.185 × 100/100 =  

(0.185 × 100)/100 =  (Multiply that number by 100.)

18.5/100 =

18.5%;  (Add the percent sign % to it.)

So that's how you get 18.5%

answer and how so? have a good day/night/afternoonnn

Answers

Answer:

y < 1/4x + 6

Step-by-step explanation:

So the first thing I found was the slope so using rise over run you could see it was going down one and to the right 4 times which gave me 1/4 for the slope, then i needed to find the y intercept which was positive 6 I got I knew it was less than because it is shaded under the line and i knew it was less than opposed to less then or equal to because its a dotted line.  

So to make the equation we first do y = slope (x) + y intercept

(if your y intercept was -6 you would change the + to a -)

our slope is 1/4 so y = 1/4x

our y intercept is 6 so we get y = 1/4x + 6

Hope this was helpful

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