Mathematics Middle School

Samuel and Rafael collect baseball cards. Together they have 63 baseball cards. Rafael has 6 times as many baseball cards as Samuel. How many baseball cards does Rafael have? Show your work.

Answers

Answer 1

x is samuel y is rafael
x+y=63
y=6x

x+6x=63
7x=63
x=9
rafael has 54.

Answer 2

Answer:

Step-by-step explanation:

63 baseballs cards in total

Assign variables to each of them:

Samuel: x

Rafael: 6x

create equation: x+6x = 63

Solve: x=9(since 63/7 is 9)

Rafael: 6*9

Rafael has 54 baseball cards

Related Questions

Mrs. Irons places the names of each of her four children in a hat at one time. She randomly draws a name, places it back in the hat, and draws again. The results are shown in the table below.

If the experiment was repeated 1,000 times then how many times could you expect to pull Ella's name?

Answers

Just do 1000 divided four 250

Answer:

250

Step-by-step explanation:

1/4 of 1,000 is 250.

Please help this is worth 15 points!

Answers

Answer:

Step-by-step explanation:

Give an example of an equation with an infinite number of solutions. Then make one change to the equation so that it has no solution.

An example of an equation with infinitely many solutions: 4x + 3 = 4x +_____
The equation with one change and no solutions: 4x + 3 = ______

Answers

Answer:

I)3 II)4x

Step-by-step explanation:

for the infinite number of solutions you need to make both equations on both sides equal

but in the one for no solution you need to make one number is equal to another number, which is wrong in Math, that's why there's no solution in it

Christopher put 12 gallons of gas in her car. She uses one gallon for every 20 miles he drives.

a. Write an equation to represent the total amount of gas left in his car based upon how many miles she has driven.
b. Find the slope and y-intercept.

Answers

Answer:

Equation: y=(-1/20)x+12.

Slope: -1/20

Y-intercept: (0, 12)

Step-by-step explanation:

Let x=the number of gallons of gas in Christopher's car.

If we start with 12 gallons, we have the equation: y=(-1/20)x+12.

This equation is already in slope intercept form, so we see that the slope is -1/20, and the y-intercept is (0, 12).

Let me know if this helps!

ONCE AGAIN URGENT
A boat is going 144 miles upstream (against the current) on a river. The speed of the boat in still water is 60 miles per hour. the speed of the river current is 80% less than the speed of the boat in still water. How long does the journey take?

Answers

Answer:

3 hours

Step-by-step explanation:

60 x 80% = 48

144 ÷ 48 = 3

OMG PLSSSS HELP ITS DUE RN
PLSSSS OMG

Answers

Answer:

THE THREE ANSWERS THAT ARE MISSING ARE GOING TO BE THE SAME AS THE THREE ANSWERS THAT ARE THERE, BUT MAKE THEM POSITIVE.

(1,40) (2,60) (3,120)

Step-by-step explanation:

I HOPE THIS HELPS!!

(1,40) (2,60) 3,120) you basically multiply by 4 hope this helps

Round 6 6/13 to the nearest whole number.

Answers

6.

1/3 is not 1/2 or more than 1/2 so you have to round down.

Rounding to the nearest whole number involves writhing out the value of a number to the nearest integer value. Hence, the number would be written as 6

Converting the fractional value to decimal ; 6 61/3 = 6.461

Since the first digit after the decimal point is less than 5, we round to 0

Therefore, the number would be written as 6 (nearest whole number).

Learn more : https://brainly.com/question/25480062

Please help me i will give brainliest

Answers

Answer:

There will be an estimated amount of 1125 faulty souvenir tokens.

Step-by-step explanation:

Hi!

So, let's do this problem out.

So we for every 400 tokens, 3 are faulty

Let's write that in a ratio

3:400

Ok, great!

So, now we know that:

3:400 = x:150,000

We can set up a percent proportion

[tex]\frac{3}{400} =\frac{x}{150,000}[/tex]

To find x, we do:

[tex]x=\frac{3*150,000}{400}[/tex]

[tex]x=\frac{450,000}{400}[/tex]

[tex]x=\frac{4,500}{4}[/tex]

[tex]x=1125[/tex]

There will be an estimated amount of 1125 faulty souvenir tokens.

Let me know if you have any questions.

PLS HELP ASAP 30 POINTS

Answers

Theoretical probability=45%
Experimental probability=75%

I need help fast plz!!
The question is below
U have to write the linear equations

Answers

Answer:

y=4x-5

y=5x+3

y=-2x-8

y=2/3x+2

y= -3/4x-2

y=1/4x+7

y= -3x+2/3

y=2/3x+10

y= -2x-1/2

y= -3/4x-3

Step-by-step explanation:

Slope intercept formula is as follows

y= mx+b where x is the slope and b is the y intercept

We can just plug in the values given and easily write our equations

Which angles appear to be congruent?
Please help me!

Answers

Ik that it isn’t one I think it is three and Ik it is the last one I think that is that right one

A doctor replaces the fish tank in her office. Do the fish have more room to swim in the new tank? Find the volume of each tank to find out.

The volume of the new tank is ____________cubic feet

Answers

Answer:

Step-by-step explanation:

YEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEET

(7th-grade math: word problems: algebra)
The price to mail a letter at the post office is $0.55 for the first ounce and $0.32 for each additional ounce. Barbara paid $2.47 to mail her letter. How much did the letter weigh?

Answers

Answer:

2.83 pounds???

Step-by-step explanation:

I just added 0.55+0.32 and divided by 2.47 :)))

Solve for x: 3(x-4)=12

Answers

the answer would be x=8

first, do distributive property. 3 • x and 3 • -4. Now you get 3x-12=12. Now add 12 to both sides. Now you have 3x=24. Now divide by 3 to get your x alone and you answer which is 8!

Inputs are represented by the variable x .

True or False

Answers

Answer:

true

Step-by-step explanation:

i think its true . i could be wrong but im pretty sure

How many 1/4 inch cubes does it take to fill a box with width 1 1/4, length 3 3/4 inches and height 2 1/4 inches?

Answers

Answer:

4 of those 1/4th inches wouldnt it ?

Step-by-step explanation:

Volume of the box: 1 1/4 x 3 3/4 x 2 1/4 = 10 33/64 cubic inches.

Volume of cube : 1/4 x 1/4 x 1/4 = 1/64

Number of cubes: 10 33/64 / 1/64 = 673 cubes

The value of 6x+9when x=5

Answers

Answer:

Step-by-step explanation:

6(5) + 9

30 + 9

Answer:

Step-by-step explanation:

6(5)+9=39

Please help. But please help

Answers

Answer:

Step-by-step explanation:

-2(4)/2 + 4

-2 * 4 = -8

-8/2 = -4

4 - 4 = 0

Answer: 0

Explanation:
-2(4)= -8
-8/2= -4
-4 + 4= 0

For every 4 quarters Robert has, he has 10 dimes. What is the ratio of quarters to dimes marbles? If Robert has 8 quarters, how many dimes does he have? Draw a visual model to represent the total coins.

Answers

Answer:

1. 4:10

2. 20 dimes

Step-by-step explanation:

Number 1. 4:10

20 dimes

plz give me the right answer

Answers

A flip the equation so the x is in front then the arrow on the line graph should be pointing the way the x is and open circle because it isn’t equal to.

What does x represent in the equation.
[tex]1/3 ( x - 10) = -4[/tex]

Answers

Answer:

Step-by-step explanation:

Which ordered pair could be added to the relation below to ensure it continues to be a function?

Answers

Answer:

I think that the answer would be (-7,-1) but i'm not that sure

Step-by-step explanation:

first to answer gets brainliest
no dum answers. if the pic isn't showing up then just comment it instead of using it as an excuse for my points.

Answers

555 is the answer to your problem

which equation represents the situation?
correct=brainliest

Answers

Answer:

k=m+4

Step-by-step explanation:

Answer: K=m+4

Explanation: You take mikes age (10) and Kellies age (14). Take mikes age and add 4 to that on all of his ages. It equals to all of kellies ages. Therefore Kellies age is equal to mikes age plus 4. Did that help?

what is the answer in the picture below i need help

Answers

Heyy this is a super easy problem, and I’m here to help!
Based off our problem here we have a trapezoid. And we are finding AREA. The formula for area of a trapezoid is 1/2h(base 1 + base 2).
Our bases in this problem are 60.5 and 75.5. We are going to addd these together and we’re going to get, 136.
Now, we must multiply 136, by its height(16). 136 x 16 = 2176.
Lastly we are going to divide by 2 and get our final answer of 1088 feet cubed.

Simplify the expression.
–2.5(1 – 2n) – 1.5n

Answers

Answer:

9.5n - 2.5

Step-by-step explanation:

-2.5(1 - 2n) - 1.5n

distribute the -2.5 into the ( )

-2.5 + 10n - 1.5n

combine like terms

-2.5 + 9.5n

9.5n - 2.5

Hope this Helps!!!

please help i need this so bad

Answers

Both a’s !!!!!!!!!!!

A hope it helps you have a good night

I am so confused this doesn't make any sense

Answers

Answer:

1 3/4

Step-by-step explanation:

The length shown is the diameter.

The radius is half of the diameter.

so 3 1/2 divided by 2

Help! Giving brainliest and 10+ points, A ball is dropped from the top of a 400-ft tall tower. The relationship between the time, t, in seconds, and the height, h(t), in feet, of the ball can be modeled by a quadratic function. Specific values of the function are shown in the table below

Part A: Determine the average rate of change of h(t) between t = 2 and t = 5.
Part B:Explain what this average rate of change means in terms of the context.

Answers

To small a picture sorry

Can anyone help please?

Answers

Answer:

y=3x-4

Step-by-step explanation:

yo im doing the same thing. To find the slope , All you need to do is to calculate the difference in the y coordinates of the 2 points and divide that by the difference of the x coordinates of the points(rise over run). That will give you the slope. If you want me to tell you the answer i can :)

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