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You work this out using BIDMAS; this tells you the order you need to calculate things in a sum. It stands for
- Brackets
- Indices
- Division
- Multiplication
- Addition
- Subtraction
though addition and subtraction are actually on the same level, as are division and multiplication. While using this as the order in which you work things out, you work from left to right.
If we look at you sum, 15 - 8 X 12,
We see that, as multiplication is before subtraction in BIDMAS, we must first do the multiplication sum. This gives us 15 - 96
Now we minus 96 from 15 which leaves us with -81. This is your answer.
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What is the slope of a line whose equation is 12 equals 4y-8x?
4y-8x = 12 4y = 8x+12 y = 2x+3 So the slope is 2 and the y intercept is 3
How do you convert 12 ft by 15 ft to square yards?
12 ft is equal to 4 yds and 15 ft is equal to 5yds therefore the answer is 20 sq yds
What is the volume of a cuboid when its height is in the ratio of 15 to 8 to its width and has a length of 22 cm with a surface area of 2506 square cm showing work?
Suppose the height is 15x cm. Then the width is 8x cm. Then the surface area is 2*(15x*8x + 8x*22 + 22*15x) cm2 Therefore 2*(15x*8x + 8x*22 + 22*15x) = 2506 or 15x*8x + 8x*22 + 22*15x = 1253 120x2 + 506x - 1253 = 0 so that x = -529/30 or 13/4 But x cannot be negative so x = 1.75. Therefore, volume = (15*1.75)*(8*1.75)*22 = 8085 cm3
What is the area for 120 inches by 15 feet?
There are 12 inches in one foot. Therefore, 120 inches si equal to 120/12 = 10 feet. 10 feet x 15 feet = 150 square feet (150 ft2)
What is the equation of the line that passes through the points (12 8) and (17 16)?
Points: (12, 8) and (17, 16) Slope: 8/5 Equation: 5y = 8x-32
Is 4x plus 12 and 4x plus 3 equal?
8x + 15
What is x if 8x over 15 is equal to 80?
8x / 15 = 80Multiply each side by 15:8x = 1,200Divide each side by 8:x = 150
8x - 2x equal 90?
8x - 2x = 90 so 6x = 90 so x = 15
What is the answer to 12x plus 6-8x-4x-3 plus 12?
If the equasion is 12x+6-8x-4x-3+12 then the answer is 15.
What is 4(2x plus 3) equal?
It equals 8x+12
What does x equal in 10-3x plus 8x equals 25?
10 -3x+8x = 25 -3x+8x = 25-10 5x = 15 x = 3
What is 8x-36 equal?
8x-36 equal = -28
What is 8x - 12?
-4
What is 8x 15?
15=8x^2-14x
What is equivalent to 8x?
x*8 is equal to 8x.
How do you factorise 8x-12?
8x -12 ... 4(2x -3)
What is x-3x plus 2x-8x equal?
-8x
