Answer:
identity :- ( a + b ) ( a - b ) = a² - b ²
Answer :- 89,694
Step-by-step explanation:
Given : 294 × 306
split 294 × 306
294 × 306 = ( 300 - 6 ) × ( 300 + 6 )
Using Identity, ( a + b ) ( a - b ) = a² - b ² :
= ( 300 )² - ( 6 )²
= 90000 - 36
= 89,964
Hence, 294 × 306 = 89,694
Answer:
x = 308 feet
Step-by-step explanation:
tan = opp/adj
tan72 = x/100
multiply both sides by 100
100 * tan72 = x
Use calculator
x = 307.76835371752534
Rounded
x = 308 feet
Answer:
Step-by-step explanation:
A ratio problem
230 sides is to 147 height as 220 sides is to an unknown height X
230/147 = 220 / X solve for x ( since 220 < 230 X should be < 147)
X = (220)(147) / 230
X = height = 140.6 m is less than 147
You should not calculate the routines but instead you should calculates how much it is front and center.
<span />
After the division, we get 8.99031476998. This rounds to <u>9</u> as a whole number, which is the answer.
When rounding to a whole number, the digits following the decimal decide what number it rounds to. If it is 0-4 it rounds to whatever the whole number currently is E.G.
8.1 would round to 8
But if its 5-9 it rounds to one above, like in our current case.
8.5 rounds to 9.
42.414 rounds to 42.
42.94149124 rounds to 43.