Answer:
Ratio of their surface area = 9:16
Step-by-step explanation:
Volume of cube A = a^3
Volume of cube B = b^3
Ratio of their volumes= 27:64
Volume of cube A = a^3
27 = a^3
a= 3√27
= 3
Volume of cube B = b^3
64 = b^3
b =3√64
= 4
Surface area of cube a = 6a^2
=6 × 3^2
= 6 × 9
= 54
Surface area of cube b = 6b^2
= 6 × 4^2
= 6 × 16
= 96
Surface area of cube a : surface area of cube b
= 54:96
= 9:16
Please help I am desperate this due tomorrow
Answer:
B
Step-by-step explanation:
2 miles in 1/2 hours = 4mi/h
2÷½=2×2=4
Answer:
B
Step-by-step explanation:
You can not divide 1/2 and 2 you have to do 2/1 divide it by 1/2 reduce it and you get the answer.
C= Wtc / 1,000 solve for c
Answer:
c = (1,000C)/(Wt)
Step-by-step explanation:
C= Wtc/1,000
1,000C = Wtc
c = (1,000C)/(Wt)
y = wx ± zx, solve for x
Answer: x = y/w+z
Step-by-step explanation:
Solve w= 1/2 x^2y for y
Answer:
y = 2w / x^2.
Step-by-step explanation:
w = 1/2x^2 y
We divide both sides by 1/2 x^2
y = w / (1/2 x^2)
y = 2w / x^2.
x2 − 4x + y2 + 8y = −4
Answer:
Radius is 4
Step-by-step explanation:
a sports tournament has 7 teams. each team has m players. using m, write an expression for the total number or players in the tournament.
Answer:
7m = Total #of players
Step-by-step explanation:
solve this equation: K - 8 =15
Answer:
k=23
Step-by-step explanation:
Rearrange:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
k-8-(15)=0
Step by step solution :
STEP
1
:
Solving a Single Variable Equation
1.1 Solve : k-23 = 0
Add 23 to both sides of the equation :
k = 23
One solution was found :
k = 23
What would be the fourth and fifth figures? How many dots will be in the 100th figure?
Answer:
4th=8 dots
5th=10 dots
100th=200 dots
Step-by-step explanation:
Since you’re adding two dots each time, it will always bed double the figure number.
4th=8 dots
5th=10 dots
100th=200 dots
Answer:
The fourth figure is 8 Dots
The fifth figure is 10 Dots
The hundredth figure will be 200 Dots
Step-by-step explanation:
The figure dots increase by two so we multiply the dot number by the amount of increase
which means
The Fourth figure have 4 dots so 4 × 2=8
The Fifth figure have 5 dots so 5 × 2 =10
The hundredth figure have 100 dots so 100 × 2 =200
Hope u like it ❤️
comment me for any question
Stuck on this 6/9 times 3
Answer:
2
Step-by-step explanation:
6/9 * 3
First you can either simplify this to make it easier or directly multiply. Simplify it by dividing 3 on the 9.
6/3=2
Or you can multiply and it would be 18/9, because 6*3=18.
18/9=2
For the equation: -1 -5(4+6x) = 5(1 - 6x) – 26, what is the value of x?
HEY MATE HERE IS YOUR ANSWER.
PLEASE MARK ME AS A BRAINLIEST......
Rory records the percentage of battery life remaining on his phone throughout a day. The battery life decreases as Rory uses the phone, but will increase or stay at 100% while charging. The graph represents the percentage of battery life remaining after a certain number of hours.
A graph titled Phone Battery Life. The horizontal axis shows Elapsed Time (hours) numbered 2 to 20, and the horizontal axis shows Battery Life (%) numbered 10 to 120. A line begins at 100% in 0 hours, to 20% in 8 hours, to 100% from 10 to 12 hours, to 60% in 16 hours, to 100% from 17 to 20 hours.
Answer:
which times could Rory's phone have been plugged into the charger? Select three options.
6 hours
9 hours
11 hours
14 hours
19 hours
Step-by-step explanation:
I am not sure if this is the anwer but i think it is
The answer is 9, 11, 19.
-
Got it right on edge :))
I’ve noticed here are around 4 ways to solve a Quadratic Equation. Factoring, Completing the square, The quadratic Formula, and graphing. With some equations, it seems that all 4 can be used for solving. But for a lot of equations, sometimes factoring doesn’t work, and you’ll have to use the Quadratic formula. Or maybe the Quadratic Formula is too slow and you need to factor instead etc. Is there an easy or quick way to tell, just by looking at a quadratic equation, which method is best for solving?
Answer:
See explanation
Step-by-step explanation:
Usually, I just find the quadratic formula the easiest to go, but here are some tips to tell if which you should use.
1. First see if you can get integer values for the roots to multiply to c and add to b.
This is the easiest way to solve a quadratic equation, and I always check for whether I can easily find the roots by multiply two numbers for c and adding them for b.
For instance, the Quadratic [tex]x^2 + 5x + 6[/tex]
I can easily see that 2 and 3 are the roots here - as [tex]2\cdot3=6[/tex] and [tex]2+3=5[/tex]. If you can do this and receive integer values, then great! I'd definitely stick with this.
2. See if you can complete the square
If you have a quadratic which is a perfect square, you'll be able to tell if c is a perfect square, and b is twice that number. This will be easiest. Any quadratic equation can be solved by completing the square, but I personally stick to this method only if I can tell it's a perfect square quadratic.
3. Stick to the Quadratic Formula
If all else fails, go with the Quadratic formula. It's not that hard and it gets the job done. I would highly discourage going with graphing, as it takes too much time and it's quite a hassle unless you have a graphing calculator.
I really hope this helped!
Answer:
In my preferred order, ...
use a graphing calculatorfactoruse the quadratic formulaStep-by-step explanation:
My personal favorite is to use a graphing calculator. If it shows the zeros are whole numbers, your solution is at hand. If it shows the zeros are recognizable decimal fractions*, the solution is also at hand. If it shows the zeros are unrecognizable as fractions, they are likely irrational. Then the vertex of the graph gets you most of the way to an exact solution.
If the quadratic's coefficients are not integers, then the quadratic formula is least likely to give difficulty.
Example
The attached is a graph of the quadratic ...
y = 2x^2 -3x -4
We can see from the x-intercepts that the roots are irrational (none are fractions with a denominator that is a factor of 2). The vertex of the graph is (3/4, -5 1/8), so the vertex form of the equation for this graph is ...
y = 2(x -3/4)^2 -(5 1/8)
Solving this for y=0, we find ...
0 = 2(x -3/4)^2 -(5 1/8)
5 1/8 = 2(x -3/4)^2 . . . . . .add the constant (vertex y-value)
(5 1/8)/2 = (x -3/4)^2 . . . . divide by 2 (the leading coefficient)
2 9/16 = (x -3/4)^2
x = 3/4 ± √(41/16) . . . . . . . add the horizontal offset (vertex x-value)
x = (3 ± √41)/4 . . . . . . . . . . simplify
If you see what we've done here, you can write down the answer from the vertex and the leading coefficient:
x = (3/4) ± √((5 1/8)/2) . . . . . vertex (3/4, 5 1/8), leading coefficient 2
__
With a little practice, factoring can be a relatively simple way to find the solution. As a preliminary step, the equation should be divided by any common factor of the coefficients, so they are all relatively prime. It helps immensely to know your times tables thoroughly. I like this method, because it can get a solution with fewer steps than using the quadratic formula.
The product of two binomials is ...
(ax +b)(cx +d) = acx^2 +(ad+bc)x +bd
The product of the leading coefficient (ac) and the constant (bd) is abcd. It has factors of ad and bc, whose sum is the coefficient of the linear term. So, if you can factor the product of the leading and trailing coefficients and find a sum of factors that is the middle coefficient, you're home free. Sometimes the factors jump out at you, and sometimes you need to list a bunch of them before you see what you need.
In our example, we would be looking for factors of 2(-4) = -8 that have a sum of -3.
-8 = (-8)(1) = -4(2) = (-2)(4) = (-1)(8)
These pairs have sums of -7, -2, 2, 7. None of the sums is -3, so factoring by integers is not possible. You can see that it is unnecessary to list the pairs with positive sums in this case.
Once you have the values ad and bc, you can see that 'a' is the greatest common divisor of ac and ad. Then ad/a = d, and ac/a = c. Now you know 3 of the 4 numbers in the binomial factors.
_____
* The Rational Root Theorem can tell you what reasonable fractions might be for your quadratic. You should be familiar with the decimal equivalents of fractions with small integer denominators.
POINTS!!! PLS COME AND LOOK!!! I NEED YOU GENIUSES!!! I WILL GIVE BRAINLIEST!!!!! AT LEAST COME AND LOOK!!!! WILL FOREVER BE GREAT FULL!!! EASY I JUST STRUGGLE!! 2 QUESTIONS!!
9. Which compound inequality represents the inequality 3|y + 7| − 16 > 5?
A) y + 7 < −7 OR y + 7 > 7
B) y + 7 > −7 AND y + 7 < 7
C) y + 7 < −7 AND y + 7 > 7
D) y + 7 > −7 OR y + 7 < 7
12. What equation could be used to represent the verbal representation below?
Sanju wants to sell his artwork at a local fair. He has created 10 pieces of artwork and has spent $44 in creating them. He wants to make a profit of $300 at the fair. What is the price he needs to sell each piece to make that profit?
A) 10A=44
B) 10A=300
C) 10A=44+300
D) 10A=300-44
Answer:
9.(A) y + 7 < −7 OR y + 7 > 7
12.(C) 10A=44+300
Step-by-step explanation:
which of the following in an irrational number?
please help ASAP!!
18
2.6 ( repeating )
pi
-16/3
Answer:Pi
Step-by-step explanation:
Pi is irrational because it‘s an ongoing number that is infinite.
6 more than the product of 5 and a number.
Answer:
6+ 5n
Step-by-step explanation:
Answer:
My answer to the question is 6>5n.
PLZ HELP ASP WILL MARK YOU BRAINLIST PLZ HELP ASP
Given that M the midpoint of VW, what is the length of line segment VM?
4x-1 3x + 3
Answer:
VW = 30
Step-by-step explanation:
As M is the mid point of VW , VM = MW...........eqn 1
We know that VM = 4x - 1 & MW = 3x + 3
Equating VM & MW in eqn 1,
4x - 1 = 3x + 3
=> 4x - 3x = 3 + 1
=> x = 4
Substituting the value of x in VM & MW,
VM = 4×4 - 1 = 15
MW = 3×4 + 3 = 15
VW = VM + MW = 30
Answer:by any chance do you go to oak ridgehigh school in geometry, and this is fridays quiz on canvas? are you in mrs.bakers class?
Step-by-step explanation:
is 19/14 an rational number
Answer:
19/14 is a irrational number
Step-by-step explanation:
Because when you divide 19 by 14, it keeps on going and the numbers are not repeating. so it is irrational
(5x-25)+(3x+9)=180 please answer right now
Answer:
[tex]x=24.5\\[/tex]
Step-by-step explanation:
So we have the equation:
[tex](5x-25)+(3x+9)+180[/tex]
Combine like terms:
[tex](5x+3x)+(-25+9)=180[/tex]
Add:
[tex]8x-16=180[/tex]
Add 16 to both sides:
[tex]8x=196[/tex]
Divide both sides by 8:
[tex]x=24.5\\[/tex]
So, our answer is 24.5 :)
3+27:(-3)
helpppp pleaseee
Answer:
30
Step-by-step explanation:Just put it
can someone please help me
Answer:
Y is less than or equal to -1
What is (-3/4)x(7/8)
James read that bears can weight up to 125 kg. He wants to convert this to pounds so he can understand how heavy that really is. Convert the bears weight to pounds. (1kg = 2.205 lbs)
Answer:
275.63 pounds
Step-by-step explanation:
To convert it to pounds, multiply the weight in kg by 2.205
125(2.205)
= 275.63 pounds
Answer:
125 kg = 275.578 lbs
Step-by-step explanation:
1 Kilogram (kg) is equal to 2.2046226218 pounds (lbs). To convert kg to pounds, multiply the kg value by 2.2046226218. For example, to convert 4 kilograms to pounds, multiply 4 by 2.2046226218, that makes 4 kg is 8.81849049 lbs.
Hope this helps! :D
he Ruiz family is exchanging euros for US dollars. The exchange rate is 1 euro equals 1.35261 USD. Since the Ruiz family knows that USD are stated to the nearest hundredth of a dollar, they used the conversion ratio. Will this give the Ruiz family the correct exchange? Explain.
Answer:
1.35
Step-by-step explanation:
the hundreth place is 2 places after the decimal and since the "2" after the "5" cant be rounded up the answer is 1.35
Answer:
The rounded conversion will not give an accurate answer based on the limitations of the problem.
Using the more accurate conversion factor will give an answer that can then be rounded to 2 decimal places.
Step-by-step explanation:
this is all you need just took it
If a rectangular shopping cart basket is 31 inches long, 19.5 inches wide, and 20 inches high, what is the volume of the shopping cart basket?
Answer:
12,090
Step-by-step explanation:
multiply 31*19.5*20
Answer:
12,090 inches
Step-by-step explanation:
volume is length x width x height, so all you have to do is multiply all the numbers by each other (31 x 19.5 x 20)
Wilma has 21 coins in her pocket made up of dimes and quarters. If the total value of the coins is $3.45, how many of each coin does she have?
Answer:
x = 12
y = 9
12 coins of dimes
9 coins of quartes
Step-by-step explanation:
x ---> coins of dimes
y ---> coins of quartes
x + y = 21
0.1x + 0.25y = 3.45 * 100
x + y = 21 L1
10x + 25y = 345 L2
x = 21 - y
Reemplace in L2
10(21 - y) + 25y = 345
210 - 10y + 25y = 345
15y = 345 - 210
15y = 135
y = 9
x = 21 - y
x = 21 - 9
x = 12
Bernardo skates at a circular rink that has a radius of 4 yards. If he uses 3.14 for π , what area would he estimate for the skating rink? * 1 point Option 4 12 yards 50 yards 25 yards
Answer: 50 yards
Step-by-step explanation: area of a circle is πr² so 3.14 x 4² = 50.24
Paul's dog has 6 puppies. Three of them are a mixture of black and white, two are all black, and one is all white. Express as a fraction the numbers that are... (hint: do not reduce the fractions) Black and white: _/_ all back: _/_ all white: _/_
Answer:
Black and white = 3/6
All Black = 2/6
All White = 1/6
Step-by-step explanation:
Black and white: 1/2
All black: 1/3
All white: 1/6
Needs reduced fractions
On a coordinate plane, solid circles appear at points (negative 7, 1), (negative 6, 4), (negative 2, 8.5), (negative 1, 7.75), (1, 4), (2, 1). A curved line connects these points in an arc.
Use the graph to determine the input values that correspond with f(x) = 1.
x = 4
x = 1 and x = 4
x = −7 and x = 4
x = −7 and x = 2
Answer:
x=-7 and x=2
Step-by-step explanation:
lol i just got it right laughing crying emoji
Answer:
x = -7 and x = 2 :)
Step-by-step explanation:
HELP ASAP!! I think it’s 5 but not sure if I’m right
Answer:
I think it's five but I'm not sure
it could be -5 or 5 but I think it it is -5
Answer:
-5
Step-by-step explanation:
Slope is change in y/change in x. You are going down 5 units and to the right one unit so -5/1 =-5.
Select the correct definition from the dropdown below: Select a Value Select
a Value A point is formed by two rays with the same endpoint.
An angle is formed by two rays with the same endpoint.
A plane is formed by two rays with the same endpoint.
Answer:
Step-by-step explanation:
B