Answer:
(2,6)
Step-by-step explanation:
it will be 2and 6
y=-2+4x
2x-5y=_26
-18x+10=-26
y=-2+4x
x=2
y=-2+4x
y=-2+4(2)
y=6
Answer:
96 sq. m
Step-by-step explanation:
If the width is x, the length is x + 4 and since perimeter = 2 * (length + width), we can write:
40 = 2(x + x + 4)
40 = 2(2x + 4)
20 = 2x + 4
16 = 2x
x = 8 so x + 4 = 12, therefore the area is 8 * 12 = 96 square meters.
Hello :
x= r cos<span>θ
y= r sin</span><span>θ
r = 4 and </span>θ =<span> −3π/4
cos( </span> −3π/4 ) = cos( 3π/4 ) = cos ( π - <span>π/4) = - cos (</span><span>π/4)= - </span><span>√2/2
</span>sin( −3π/4 ) = - sin( 3π/4 ) = - sin ( π - π/4) = -sin (π/4)= - √2/2
x = - 2 √2
y = - 2 √2
Answer:
B. Taking square root of both sides
Step-by-step explanation:
The first step given to us is
When we take square root of both sides we obtain;
Therefore the corect answer is B
Answer:
440
Step-by-step explanation:
Determine the sum of the first 20 terms of an arithmetic series with an
initial term of 3 and a common difference of 2.
We have:
formula: a_n = (n -1)d + a_1
SUM [from n= 1 to m] a_n = SUM [n=1 to m] (n -1)d + a_1 = d* (m-1)*m/2 + m*a_1 = m* (a_m + a_1)/2
a_20 = (20 -1)*2 + 3 = 19*2 + 3 = 38 + 3 = 41
a_1 = 3
so SUM [n=1 to 20] = 20* (41 + 3)/2 = 20 * 44/2 = 10*44 = 440