Rounding numbers make numbers easier to work with. The tenths is the place found immediately to the right of the decimal point. The next place is called the <em>hundredths. </em>If the number in the hundredths place is 5 or above, we add one to the number in the tenths place and let the other numbers go. If the number in the hundredths place is four or below, we let the other numbers go.
First. 200
200 is already rounded to the nearest tenth. Note that there is no any decimal point.
Second. 19.30 seconds
The number in the tenth place is 3 and the number in the hundredth place is 0, that is, zero is less than four, therefore we can say that this number rounded to the nearest tenth is:
19.30 or 19.3
Third. Usain bolt, jamaica
We can't round words. This concept is apply only to real numbers.
Okey so the area of a circle is taken from the equation πr²
now in the sum they have given information as: area of one small circle is 9π
that means :
area of small circle = πr²
= π3²
= π9
so in the sum they have given us the radius of one circle as 3
from this information we understand that the diameter of one small circle should be = 3 ×2
= 6 (as diameter is twice the radius)
we are given 3 of these circles. that means there are 3 times the diameter measured.
so the diameter of the large circle is = 6×3 = 18
as we calculated, since 18 is the diameter of the large circle, it should be taken ½ for radius.
radius of large circle = 18÷2
= 9
now we know the radius of large circle.
taking the equation 'πr²' to find the area:
area of large circle = πr²
= π9²
= π81
your answer is 81π
Y = e^tanx - 2
To find at which point it crosses x axis we state that y= 0
e^tanx - 2 = 0
e^tanx = 2
tanx = ln 2
tanx = 0.69314
x = 0.6061
to find slope at that point first we need to find first derivative of funtion y.
y' = (e^tanx)*1/cos^2(x)
now we express x = 0.6061 in y' and we get:
y' = k = 2,9599
Answer:
Perpendicular
Step-by-step explanation:
L1 :
let A(-1,4) B(3,2)
the slope is : (YB - YA)/(XB -XA)
(2-4)/(3+1) = -2/(4)
the slope is
: -1/2
L2 :
let C(2,5) D(4,9)
the slope is : (YD - YC)/(XD -XC)
(9-5)/(4-2) = 4/(2)
the slope is
: 2
2×(-1/2)= -1
Perpendicular
Answer:
can i see a worksheet?
Step-by-step explanation: