Answer:
y=21-3x and y=18-2x
Step-by-step explanation:
Ok, so we have candle A, which is 21 inches and burns 3 inches every hour. in slope-intercept form, the hours would be the x, the 21 is our y intercept. So the first equatio would be y=-3x+21 (negative slope, because the height of the candle is going down). Candle b, which is 18 inches, burns away 2 inches each hour. We can make -2 the slope (negative 2, since the candle is being burned away, not being added to), and the 18 our y intercept. So the two equations would be
y=21-3x
and
y=18-2x
hope this helps!
A rectangular price tag has a perimeter of 24 centimeters. Its area is 27 square centimeters. What are the dimensions of the price tag?
You have 84 feet of streamers. You cut 24 pieces that are each 1/2 yard long. How many feet of streamers do you have left?
Answer:
48
Step-by-step explanation:
If we have 84 feet of streamers. You cut 24 pieces that are each 1/2 yard long then 48 feet of streamers we left.
What is Unit of Measurement ?A unit of measurement is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity.
Given that we have a 84 feet of streamers.
You cut 24 pieces that are each 1/2 yard long.
Need to find the feet of streamers we left.
We know that 1 yard is equal to 3 feet.
Therefore, 1/2 yard is equal to 1.5 feet.
The total length of the streamers that were cut is:
24 pieces x 1.5 feet/piece = 36 feet
To find out how much streamer is left, we can subtract the length of the cut streamers from the total length we started with:
84 feet - 36 feet = 48 feet
Therefore, you have 48 feet of streamers left.
To learn more on Unit of Measurement click:
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What is the size of angle s !!
The sum of the angles of a quadrilaterals is 360 so 8s=360 s=45
Connor has five nickels in one hand and some dimes in his other hand. He has more than two times as many dimes as nickels. He has fewer than three times as many dimes as nickels.
Complete question :
How many dimes might he have?
How many coins would he have altogether?
Answer:
11, 12, 13, 14 ;
16, 17, 18, 19
Step-by-step explanation:
Let :
Nickel = n
Dimes = d
Total number of nickels = 5
He has more than 2 times as many dimes as nickels ;
d > 2n
d > 2*5 ; d > 10
He has fewer than 3 times as many dimes as nickels;
d < 3n
d < 3*5 ; d < 15
Meaning he has more than 10 dimes but less than 15.
10 < d < 15
So, d could be ;
11, 12, 13, 14
Number of coins altogether :
11 + 5 = 16
12 + 5 = 17
13 + 5 = 18
14 + 5 = 19
table represents a quadratic function?
Which
Answer: third graph -4,2 -2,-7
Step-by-step explanation:
Shirley bought 20.8 pounds of bird seed at a bargain store. She wants to fill her feeder 100 times
with anequal amount. How much seed should she put in the feeder each time?
Answer:
0.208
Step-by-step explanation:
Hope this helps....
Answer:
0.208
Step-by-step explanation:
5 of 5
Pip, Angad and Nick share some sweets in
the ratio 3:1:1. Pip gets 36 more sweets
than Nick. How many sweets are there
altogether?
Find the slope hurryyy
Answer:
-5
Step-by-step explanation:
Answer:
The slope is -5
Step-by-step explanation:
hope it helps....
have a great day!!!
what has to be the same in order to add fractions?
If your test marks in your last 3 tests were: 70%, 82%, and 90%, what's your average test mark?
Answer:
80,66
Step-by-step explanation:
70 + 82 + 90 = 242
for average: you have 3 tests, so 242÷3 = 80,66667
i need help w this plss
Answer:
Line a and Line b are parallel. The slopes are equal
Line b is perpendicular to line c. The slopes are different
Step-by-step explanation:
The standard form of an equation is y =- mx+C
m is the slope
Two lines are parallel if they have the same slope and perpendicular if the product of their slope is -1
For Line a: 4x-3y = 2
Rewrite
-3y = -4x+2
y = 4/3 x - 2/3
Slope of line a is 4/3
Line b: y = 4/3x + 2
mx = 4/3x
m = 4/3
slope of line b is 4/3
Line c = 4y+3x = 4
4y = -3x + 4
y = -3/4 x + 1
Slope of line c is -4/3
Since line a and b have the same slope, they arer parallel
mb * mc = 4/3 * -3/4
mb*mc = -1
Since the product of slope of line b and c is -1, they are perpendiclar
Kevin just put 20.26 gallons of fuel into his car. There were 3.9 gallons in the car to begin with. How much fuel is in Kevin's car now?
HELPP
Answer:
24.16
Step-by-step explanation:
A restaurant offers a dinner salad for $3.75. There is a choice of a lettuce salad or a spinach salad. Then there is a choice of one topping from mushrooms, beans, or cheese. Finally, there is a choice of dressing from ranch, oil, or vinegar. How many different salad combinations are possible?
Answer:
There are 12 possible salad combonations
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
The person above me is correct ;)
What is / are the coefficients in this expressions? 3a+7-8n
Answer:
3 and 8
Step-by-step explanation:
3 and 8 are the only numbers that have a variable, or the letter beside it
Can someone help me out with this question? Thanks
Answer:
160
Step-by-step explanation:
vertical angles
Answer:
its 80
Step-by-step explanation:
because of vertical angles the 160 is the same for the other side so you subtract the 80
How many inches are in 7 and 1/2 feet?
Answer:
90 inches
Step-by-step explanation: 7 feet*12 inches= 84 and .5 feet*12 inches= 6.
84 inches+ 6inches=90inches
Answer: 1.2ft × 12
= 14.4"
Step-by-step explanation:
GIVE ME DA BRAINS
Can Someone help me with this work
Answer:
Oar City is cheaper
Step-by-step explanation:
27/3=9 (Boat Bunker)
45/9=5 (Oar City)
$4 Cheaper than Boat Bunker
Brainlist?
Answer: Oar City is the answer.
Step-by-step explanation:
the y-intercept is the y -value of the point at which the graph of a function crosses the y-axis True or False
Answer:
True
Step-by-step explanation:
The y intercept is where the line "crosses through" or "goes through" the y axis.
ill mark u brainliest pls show work
Answer: Function A; 14 meters per seond
Step-by-step explanation:
do Distance/time for Function A: so you can show 140/10, or 280/20, it doesnt matter as they are all constant/consistent.
A has a rate of 14 m/s
B's rate is given, 13 m/s
So A has a faster rate of 14 meters per second
as a mixed number
13
Write
as a mixed number.
6
Answer:
2 (1/6)
Step-by-step explanation:
when 13 is divided by 6, the remainder is 1 with the result of 2. In the format of a(b/c), the result is a, the remainder is b, and the divisor is c.
Answer:[tex]2\frac{1}{6}[/tex]
Step-by-step explanation:
Converting to a mixed number using long division with remainders for 13 ÷ 6.13÷6=2R1
Therefore:[tex]\frac{13}{6}=2\frac{1}{6}[/tex]
please answer this :(
Answer:
68.9°
Step-by-step explanation:
Using Sine rule
x/sin X = y/sin Y
4.5/sin X = 4/sin 56
sin X × 4 = 4.5 × sin 56
sin X = 4.5 × sin 56/4
X = arc sin (4.5 × sin 56/4)
X = 68.85449°
Approximately = 68.9°
the number of squirrels in a park at the end of the month
Using the given recursive function, we have that:
a) There will be 132 squirrels in the park at the end of August.
b) As time goes by, the number of squirrels in the park will increase.
What is the recursive function for this problem?
The recursive function for this problem models the number of squirrels in the park at the end of month n+1, considering the amount present at the end of month n, as follows:
[tex]S_{n+1} = 1.6S_n - 30[/tex]
For this problem, we have that at the amount at the end of May is of 70, hence:
[tex]S_{5} = 70[/tex]
Hence, we find the amounts at the end of June, July and August, as follows:
[tex]S_6 = 1.6(70) - 30 = 82[/tex].[tex]S_7 = 1.6(82) - 30 = 101[/tex].[tex]S_8 = 1.6(101) - 30 = 132[/tex].Hence:
a) There will be 132 squirrels in the park at the end of August.
b) As time goes by, the number of squirrels in the park will increase.
More can be learned about recursive functions at https://brainly.com/question/489759
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Can you answer plz
у = х + 3
у =-2x-3
Answer:
x = - 2, y = 1
Step-by-step explanation:
Comparing both the equations,
→ y = y → x + 3 = - 2x - 3
=> x + 3 = - 2x - 3
=> x + 2x = - 3 - 3
=> 3x = - 6
=> x = - 6/3 = - 2
Substitute the value of x in any of these:
=> y = x + 3 = - 2 + 3 = 1
Answer:
Step-by-step explanation:
If a solution exists for the system of equations y=y so we can say
x+3=-2x-3 Add 2x to each side
3x+3=-3 Subtract 3 from each side
3x=-6. Divide each side by 3
x=-2, since y=x+3
y=-2+3
y=1
So the solution to the system of equations is the point (x,y)=(-2,1)
Help
Write a function to represent the set of ordered pairs.
{(2, -1), (4, 5), (6, 15), (8, 29)}
Step-by-step explanation:
ES6 has a new Set data structure for storing sets of unique objects. However it is based on object references as opposed to value comparisons. As far as I can tell this makes it impossible to have a set of pairs of numbers without stringifying.
For example, typing in Chrome's console (needs Chrome 38+):
> var s = new Set(); < undefined > s.add([2, 3]); < Set {[2, 3]} > s.has([2, 3]) < false <--- was hoping for 'true'
This appears to be by design: since I passed a different array of [2, 3] to has(), it returns false, because although the contents is the same it only looks at object references, and I allocated a new and different array to pass to has(). I would need to store a reference to the original array I passed to add() to check with has(), but this is not always possible. For example if the number pairs represent co-ordinates, I might need to check if the set has [obj.x, obj.y], but this will always return false since it allocates a new array.
The workaround is to stringify the arrays and key on strings like "2, 3" instead. However in something performance-sensitive like a game engine, it is unfortunate if every set access needs to make a string allocation and convert and concatenate number strings.
Does ES6 provide any feature to solve this problem without stringifying, or is there any feature on the horizon with ES7 that could help as well?
javascriptperformancedata-structuressetecmascript-6
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asked Sep 21 '14 at 13:06

AshleysBrain
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3 Answers
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As you've noted [2, 3] === [2, 3] is false, meaning you can't use Set like this; however, is Set really the best option for you?
You may find that using a two-level data structure like this will be better for you
var o = {}; function add(o, x, y) { if (!o[x]) o[x] = {}; o[x][y] = true; } function has(o, x, y) { return !!(o[x] && o[x][y]); } function del(o, x, y) { if (!o[x]) return; delete o[x][y]; // maybe delete `o[x]` if keys.length === 0
$6.00 times 200 per day times 65.00 per day for saftey
The square root of 150 lies between which two consecutive integers?
O 10 and 11
O 11 and 12
O 12 and 13
O 149 and 151
Answer:
12^2 = 144 and 13^2 = 169
So, the answer is 12 and 13
Step-by-step explanation:
How do I know where to put numbers on a graph
Answer:
X axis is on the left of the Coordinates (x,y) and Y axis is on te right
X goes sideways
Y goes Vertical
Step-by-step explanation:
Which is the better value? Circle it. 3 sandwiches for 15.00 or 4 sandwiches for 21.00?
Answer:
I say 3 sandwiches for 15.
Step-by-step explanation:
to find the best price divided the numbers
15 divided by 3= 5
5 is the price per sandwich for this
21 divided by 4= 5.25
5.25 per sandwich
the 3 for 15 is a better deal. You save money.
Help plz it would mean a lot thanks
Answer:
1. 128 cm^3
2. 28 ft^3
3. 45 yd^3
4. 675 in^3
5. 83.7 mm^3
6. 144 cm^3
Step-by-step explanation:
just multiply
Graph the system of equations, and determine the
solution.
X + 5y = 10
2x + 10y = 50
Use the graphing tool to graph the system,
Answer:
First one is 2. The second one is 5.
Step-by-step explanation: