The required, 17 heartbeats in 15 seconds and 68 heartbeats in 60 seconds are equivalent.
The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
The ratio can be defined as the proportion of the fraction of one quantity towards others. e.g.- water in milk.
Here,
17 heartbeats in 15 seconds
Ratio = 17 / 15
Now,
68 heartbeats in 60 seconds
Ratio = 68 / 60
= 17 × 4 / 15 × 4
= 17 / 15
Thus, the required, 17 heartbeats in 15 seconds and 68 heartbeats in 60 seconds are equivalent.
Learn more about ratios here:
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(30x³+4x²-150)÷(3x-5)
B
4x3 -- 5x2 - x
C
-4x3 + x2 + 6x
2x3 + 4x2 -- 5x
Answer:
A- 8x^3 + 12x^2 - x
Step-by-step explanation:
The symbol ^ with a 2 is squared and ^ with 3 means cubed.
1. Add a 1 before the parenthesis on both sides. Now, the equation should look like 1(5x^2 + 6x^3 + 2x) -1(3x - 2x^3 - 7x^2).
2. Now we should distribute. 1 × 5x^2 + 1 × 6x^3 + 1 × 2x -1 × 3x + -1 × -2x^3 + -1 × -7x^2.
3. Now the equation should be simplified.
1 × 5x^2 = 5x^2
1 × 6x^3 = 6x^3
1 × 2x = 2x
-1 × 3x = -3x
-1 × -2x^3 + -1 = 2x^3 -1. In this equation, there is a +- sign together, which is the same as a - sign.
-1× -7x^2 = 7x^2
4. The new equation is 5x^2 + 6x^3 + 2x - 3x + 2x^3 - 1 + 7x^2
5. Now you can combine the like terms. 5x^2 and 7x^2 can be added, so 5x^2 + 7x^2 is equal to 12x^2. Also, 6x^3 and 2x^3 can be added, so 6x^3 + 2x^3 is equal to 8x^3. Lastly, 2x and -3x can be combined, so 2x - 3x is equal to -1x or -x.
6. So, the simplified equation is 12x^2 + 8x^3 -x. You can also write it as 8x^3 + 12x^2 - x. So, A is the answer.
Step-by-step explanation:
The length, breadth and height of the solid is not equal, so it's a cuboid
Volume of a cuboid is calculated by productoflength,breadthandheighti.e. V = lbh
Puttingthevaluesintheformula,
=> Volume = 1m * 2m * 2m
=> Volume = 4m3 (Option 3)
Volumeofthecuboidis4m³(ans)