## Algebra

Parent Category: Math and Arithmetic
The use of letters to substitute unknown numbers to form an equation. Solve the equation to get the unknown number using different methods such as simultaneous equations and more.

## Subcategories

No, because they only have the limitations of 91 degrees (lowest obtuse angle) and 179 degrees (highest obtuse angle). Two obtuse angles could be either of them or anything in between.
Popularity: 4
4x + 4 + 5x - 22 = 90 combined like terms 9x - 18 = 90 +18 +18 9x = 108 /9 /9 divide by 9 on both sides x = 12 plug in and check (4 * 12) + 4 + (5 * 12) - 22 = 90 48 + 4 + 60 -22 = 90 90 = 90
Popularity: 1
Compatible number is one that is near the actual number, but is easier to use for addition, subtraction, multiplication, or division. In other words, it is easy to use for estimating the answer to an arithmetic problem. Example: 38 + 23 A compatible number for 38 might be 40 A compatible number…
Popularity: 4
18cm is the area and perimeter. the width is 3cm.
Popularity: 3
18x1 9x26x3
Popularity: 2
About an hour and a half.
Popularity: 2
in both cases the two lines crosses each other at an angle
Popularity: 2
20.25 each side is 4.5 4.5x4.5=20.25
Popularity: 3
200(square feet)x12(inches in a foot)=2400(inches) 8(inches)x8(inches)=64(inches)2400(inches)÷64(inches)=37.5(pavers)37.5 pavers (if you need whole pavers, 37)
Popularity: 1
yup
Popularity: 1
a scalene triangle
Popularity: 1
you can't simplify that anymore, you have to know what either x or y equals
Popularity: 4
True. You may not be able to switch numbers like 4-2=2-4 but you would say 4-2=-2+4 * * * * *That is not the associative property!The associative property requires that the order of operation can be changed without affecting the final result. This is clearly not the case with subtraction since:(5 - …
Popularity: 1
No, tables are not ALWAYS the best way to find a value. They may be the easiest way or not.
Popularity: 2
1, 2 and 3
Popularity: 4
find the formula for that shape, which is made of 2 triangles, so if you find the base and height of each of those triangles, find the area of each and add them together, i think you should get the proper area
Popularity: 11
3.375 inches (π is pi, it just looks like an n)(• is a multiplication sign, so you don't get multiplication and x confused)the surface area is 183.69sa=2(π•r•r)+2(2πr•h)sa=2π•3•3+4π•3•hsa=2π•9+4π•3•hsa= 18π+12π•x 56.52+37.68x=183.69-56.52 -56.52___________________ 37…
Popularity: 1
(480 square feet) / (9 square feet per square yard) = 53 and 1/3 square yards
Popularity: 1
If they have the same slope but different y intercepts then they are parallel
Popularity: 0
There are 0.0254 metres in one inch. Therefore, rounded to two decimal places, 0.83 metres is equal to 0.83/0.0254 = 32.68 inches.
Popularity: 1
It means Centimeter- it's a unit of measure, like on a ruler.
Popularity: 4
Yes, it is ± 7.745967
Popularity: 0
5,280*3=15,840
Popularity: 2
volume=lengthxwidthxheight
Popularity: 1
well, i believe it goes like this (not certain) 25 is the only not prime number so...3xcubed x squared -5 squared
Popularity: 2
A(n) considerable or great amount
Popularity: 3
The Earth's radius is 6 378.1km So that means that the earth is 1.88 (almost 2) times larger.
Popularity: 1
Seven.
Popularity: 4
km here's the order from greatest to smallest km hm dam m dm cm mm kilometer hectometer decameter meter decimeter centimeter milimeter
Popularity: 2
724,300,000 is already in decimal form.
Popularity: 3
diamond A rhombus is the math name. It's just a slanty square.
Popularity: 3
974 = 31.20897312
Popularity: 1
I can get you most of the way there volume÷height=length+width (so you can find 2 numbers which add up to the answer you get and those could be your length and width)hope this helps
Popularity: 1
Yes, y = mx +b is standard form and y = 4/3x - 10, is in standard formy=y m = 4/3 x=x b = - 10
Popularity: 1
65.8368 meters
Popularity: 4
135 ft2 or 15 yards2First, convert 3 yards to 9 feet, OR 15 feet to 5 yards.Then, multiply 9 feet x 15 feet to get 135 ft2ORmultiply 5 yards by 3 yards to get 15 yards2Remember, the units are squared too!
Popularity: 1
Length of rectangle garden is 5 m greater than the width. the area is 84 m2. find the dimensions of the garden.
Popularity: 1
if 12 is the perimeter... then it would be 12 meters of brick walkwayif 12 is the area...and by 12m squared you mean as the area...then it depends on the dimmensions of the flowerbed. It could be 1 by 12 which would give you 26 m, or it could be 3 by 4 which would give you 14mif 12 is the area, and …
Popularity: 1
square root of x/pi
Popularity: 1
276 inches
Popularity: 4
the same thing as a steep slope in Asia
Popularity: 2
32 - 4 = 28
Popularity: 4
I think what you want is rise/run which is 10/1 sorry, not very helpful, but I'm not quite sure what you're asking
Popularity: 1
Presumably you mean in Roman numerals?If so then it is (CXXV)LNumerals in brackets indicate multiplication by a thousand.Hence:(CXXV) = 125*1000 = 125000L = 50
Popularity: 1
There are 3 feet in one yard. Therefore, 77 feet is equal to 77/3 = 25.6 recurring (that is, 25.6666..) yards.
Popularity: 1
if you're looking for the hypotenus, the answer is 11.4 (rounded to the 100ths place) if you are looking for one of the other sides, the answer is 7.07 (rounded to the 100ths place)hope this is what you were looking for
Popularity: 2
x+y=12 x-y =4 x=12-4 =8 8+y=12 y=12-8 =4 so x=8 y=4 8+4=12 8-4=4
Popularity: 1
1.6x10 to the negative 10th power (1.6x10 with a little -10 after the big one)
Popularity: 1
Here are some ways they are alike: They certainly have 4 sides. They are both polygons. They are both 2 dimensional. They are both 4 sided quadrilaterals.
Popularity: 11
If multiplying 3 digit numbers with 2 digit numbers. For example; 345 x 92= First you will start with 2 by multiplying it by 5 then carry the 1 above the 4 then multiply the "2" with 4 then add the number on-top of the 4 which is 1 and it will give you 9. 4 x 2= 8+1=9. Then times the 2 by 3 which is…
Popularity: 4
One M was for Forrest E. Mars Sr., and the other M was for Bruce Murrie, son of long-term Hershey president William F.R. Murrie.
Popularity: 6
triangle and square
Popularity: 1
if you write (type) it out... 4a-1=15add 1 to both sides4a=16divide both sides by 4a=4
Popularity: 7
8
Popularity: 1
There are 5280 feet in one mile. Therefore, 5280 feet is equal to 5280/5280 = 1 mile.
Popularity: 5
Popularity: 1
Straight Edge
Popularity: 2
The Hypotenuse, which also happens to be the longest side, and can be found using the formula: a^2+b^2=c^2 where a and b are the other two sides, and c is the hypotenuse.
Popularity: 1
Popularity: 1
There are 10 millimetres in one centimetre. Therefore, 0.156 centimetres is equal to 0.156 x 10 = 1.56 millimetres.
Popularity: 1
x^2-6x+9 (x-3)(x-3)
Popularity: 7
.8 is equivalent to 8/10 or 80/100. Reducing either one will lead us to a final form of 4/5
Popularity: 1
Area of the circle will = 3/5*pi*radius2Area = 3/5*pi*152 = 424.1150082 square feet
Popularity: 1
A trapezoid (called a trapezium in the UK) has one pair of opposite sides parallel. It is called an Isosceles trapezoid if the sides that aren't parallel are equal in length and both angles coming from a parallel side are equal, as shown. No trapezoids are parallelograms anyway because only one pa…
Popularity: 4
In a meter? 1 meter (100 centimeters/1 meter)(1 inch/2.54 centimeters)(1 foot/12 inches) = 3.28 feet ( 0.28 * 12 inches = 3.4 inches ) so, 3' 3''====will do ( all I ever remember is that 1 inch = 2.54 centimeters, so and English to metric conversion can be done with this knowledge )
Popularity: 1
To find the area of a square, all you do is multiply length, by width. In this case, it would be 5X5 which equals 25.
Popularity: 4
The volume of a rectangle requires 2 dimensions. Length (L), Height (H), and Width (W). To get the volume, just multiply the 3. Volume of rectangle = L x H x W The order does not matter, but watch out for dimensions. A box that is 2cm x 2cm x 2cm has a volume of 8cm^3 (cm cubed) A box that is 2m…
Popularity: 3
square rectangle rhombus Parallelogram. Above are some examples.
Popularity: 1
9 feet 6 inches=114 inches
Popularity: 2