If a number and a variable are together with no sign between them, what operation does that show?
Answer:
Multiplication
Step-by-step explanation:
If you were to solve 8x x x, you wouldn't know what that means. So, normal people place variables and numbers together to represent multiplication.
If x-y=6 and x^2+y^2=24, find x^3-y^3.
Answer:
162.06
Step-by-step explanation:
sorry i'm not the best an explaining but i'm confident in my answer.
the first thing to do is get rid of the ² in x²+y²=24, we do this by √24 which ≅4.90 (i rounded to the hundreth place)
then we have this
x-y=6
x+y=4.90
I am using the elmination method. To do that you need to get two letters to have the same coefficient (in 4x 4 is the coefficient) with oposite signs (one possitive one negitive)
In our equation here we see that the same coefficient is 0, and there is oposite signs for y. Therefore we can add the two equations and get
2x=10.9 (the y cancels out)
now we have a simple equation and all that is left is to solve it
10.9/2=5.45
x=5.45
Now we need to find y we do that by pluging the x value into one of the equations I choose the first one becasue its easiest.
(5.45)-y=6
y= - .55
now that we have both x and y plug them into the final equation (5.45)³-(-.55)³= 161.89-(-.17) =162.06
Therefore x³-y³≅162.06!
(if you have any questions or would like to debate the answer please let me know!)
TELL ME WHY
Which graph shows a proportional relationship between the number of hours of renting a bike and the total amount spent to rent the bike? (5 points)
Answer:
B
Step-by-step explanation:
it's going up at a steady rate
You earn $56 walking your neighbor's dog for 8 hours. Your friend earns $36 painting your neighbor's fence for 4 hours.
What is your pay rate? And What is your friend's pay rate?
Answer:
Your pay rate is:
$ 7 per hour
Your friend's pay rate is :
$ 9 per hour
Explanation:
So if it takes you 8 hours to make $ 56 , you can just divide the total money earned by the time. So it would be 56 ÷ 8 which is 7 .
And if takes your friend 4 hours to make $ 36 , you can divide like we just did . So it would be 36 ÷ 4 which is 9 .
So you make $ 7 per hour and your friend makes $ 9 per hour.
Help MMEEEE PLKEASEEss.
Answer:
the answer is180.
Step-by-step explanation:
Hi guys can you please help me
Answer:
The anwser is D
Step-by-step explanation:
Answer:
43
Step-by-step explanation:
P-arentheses
E-exponent
M-multiply
D-divided
A-dd
S-ubtract
parentheses first so 8x5 equals 45. 3x2 equals 6. 45 minus 6 equals 39. 39 plus 4 equals 43!
Evaluate the expression 2(5x -3y) if x = -1/2 and y = 1
A bag contains:
5 red blocks
6 yellow blocks,
9 blue blocks.
What is the ratio of yellow blocks to total blocks?
1Points
A 14/6
B 14/20
C
6 to 20
D
6:14
HELP!!!! WILL GIVE BRAINLIEST
Answer:
b
Step-by-step explanation:
Martin is comparing two different video game stores.
*At Best Buy, the equation c=59.99g
*At PC Richard & Son, the cost of 2 games is $117.96, and the cost of 5 games is $294.90
How much money, per game would Martin save by going to the less expensive gas station?
If you don’t know plz don’t answer it :))
Rectangle WXYZ with vertices W(-1,4), X(-1,1), Y(5,1), and Z(5,4). What is the perimeter?
HELP PLEASE I WILL GIVE BRAINLIEST TO BEST ANSWER AND 20 POINTS!!!!
Answer:
umm 14? hold on imma come back:)
pls go do another problem if u dont know how tod this....... Simplify −9+1/4x−6−1/8x show your work
Answer:
-15 + 1/8x
Step-by-step explanation:
calculate the difference
-9 +-6 = -15 then
1/4x -1/8x =1/8x
solution -15+1/8x
How to subtract 1/4x =1/8x ( this should help )
1/4x -1/8 x get the least common denominator which is 2
2x/2x4 -x/8 multiply the numbers
2x/8 - x/8 collect like terms (factor x/8 as 1/8) 1/8x
Some questions have the form y = kx, where k is a number. Drag each question to the correct category below. ( X = y/2 ),( y = .11x) , (y = 0.04x), (Z/x =9),( x - 5 =y), (5 = xy ). Has the form y = kx. Can be put into form y = kx. Other.
Answer:
Has the form y = kx
( y = 0.11x)
(y = 0.04x)
Can be put into form y = kx
(z/x = 9)
Other
(5 = xy)
( x = y/2)
Step-by-step explanation:
y = kx
( y = 0.11x)
(y = 0.04x)
kx = y
(z/x = 9)
-----------
( x = y/2 )
( x - 5 = y)
(5 = xy)
Complete the table using the equation y = 4x + 8.
Answer:
For 0 = 8
For 1 = 12
For 2 = 16
For 3 = 20
For -1 = 4
Ummm so yea.........
Answer:
21.75 for 5 $21.75÷ 5= $4.35
Step-by-step explanation:
Answer:
$4.35 for each student :)
Please help, I need help on this math question
Answer:
Probably C
Step-by-step explanation:
Repeating Decimal: a decimal where a number or a pattern of numbers repeats forever
For example, 0.2222... or 0.671671.... (The "..." means that it repeats like that forever)
A. 3/7= 0.142857142857142857... (6 repeating digits) This is a repeating decimal because the last six digits continue forever
B. 3/4=0.75. This number is not a repeating decimal because a repeating decimal goes on forever, while this only has two decimal places.
C. 1/9= 0.11111... This is a repeating decimal because it goes on forever and has a pattern (all are 1s)
D. 5/11=0.454545... This is also a repeating decimal because the last two digits repeat forever.
There is probably something wrong with the question (or your unit) because three of these numbers are, in fact, repeating decimals. If I were you, I would ask your teacher (it gets you respect from the teacher=more chance that they'll be lenient with you)
But if you really don't want to, I would go with "C" because it only has one repeating decimal place, and your curriculum probably says that a repeating decimal is only one digit.
Good Luck! :)
The difference between a number р and 6 is –14.
Can someone help me with homework please! i'm in 8th grade and its easy for most:((
Answer:
sure I can try
Step-by-step explanation:
what do you need help with?
Find the value of (3/4)²
Answer:
The answer is 9/16
Square the values in the bracket
Please help ASAP with these problems!
Prove that: (12^13-12^12+12^11)(11^9-11^8+11^7) is divisible by 3, 7, 19, and 37. _ times 3 times 7 times 19 times 37
Factor completely: (4x^a+2)+20x^a
Factor completely: (15x^2c+3)-(25x^c+1)
Answer:
HUH
Step-by-step explanation:
4y (4y - 4) - 4 (-4 + 5 + 4y²)
please simplify <3
Answer:
16y - 4
Step-by-step explanation:
4y(4y - 4) - 4(- 4 + 5 + 4y^2)
16y - 16y - 4(1 + 4y^2)
16y - 16y - 4(4y^2 + 1)
16y^2 - 16y^2 + 4
16y - 4
plssssssssssssss help
What are the 7 & 9 for? Obviously, you had info from somewhere else for the 9 & 7 if they are THE ONLY NUMBERS here
i need help ! please asap!!!!
Answer:
C & F
Step-by-step explanation:
29 - 13 is 16 and 46 - 21 is 25. Everything else is wrong because the differences are not the correct answers except for C and F. Sorry if this sounds kinda confusing
This is probably wrong so...
Use the table that shows the prices of different amounts of mixed fruit at the grocery store. Please help
Answer:
29.25
Step-by-step explanation:
This is a simple function table we are working with, so we see that 2 (pounds) would cost around $4.50. So Next we look at 4 would equal $9. By doing this I divide 9 by 4 to get the answer of 2.25. This is are new function table rule of C=P x 2.25. Now that we have this we know that 13 is are P (pounds) and we are looking for are C (cost) After we input 13 into are function rule. We get the answer of $29.25.
Answer: well 14 pounds cost $31.50
so that means 13 pounds cost $29.50
Step-by-step explanation:
PLEASE HELP ME WITH THESE I'LL GIVE BRAINLIEST
Answer: 42
Step-by-step explanation:
PLEASE HELP ME, I REALLY NEED HELP
Answer:
90
Step-by-step explanation:
Ms. Hassan plans to serve appetizers at her Christmas party. She plans on offering 8 appetizers for every 3 people. If she has 240 people RSVP to the Christmas party, then how many appetizers will she serve?
Answer:
I hope this is right. If not im sorry.
Step-by-step explanation:
240 / 3 = 80
80 * 8 = 640
640?
Answer: 640
Step-by-step explanation:
Fill in the blank with the correct response.
If 3/4 = x/18 , then x is equal to
Answer: x = 13.5
3/4 = x/18
⇔ x = 3/4 .18 = 27/2 = 13.5
Step-by-step explanation:
Answer:x = 27/2
Step-by-step explanation:
Step 1: Cross-multiply
3/4=x/18
(3)*(18)=x*(4)
54=4x
Step 2: Flip the equation.4x=54
Step 3: Divide both sides by 4x/4=54/4x
= 27/2
I hope it helps you!
Please make as brilliant!!
oh lord help :,) please and thank you
Answer:
The answer is 19.10 $
Step-by-step explanation:
Answer:
I believe the answer is 7.04+1.34x= Y The value of the card in 2004 was 19.10.
Step-by-step explanation:
f If you subtract 2004 by 1995 you get 9 and if you multiply it by 1.34 you get 12.06. But then you add 7.04. Hope this helps and let me know if correct!!
I need help
I know I should know but I don´t know it
Answer:
It's the second option
Step-by-step explanation:
the answer should be 233 but he got 243 because he forgot to regroup