In four weeks, he would be able to type 35 words a minute. See how it goes up two words per week. He started with 27 words, then after one week, it was 29, and after two weeks, it was 31, so after three weeks, 33, and in four weeks, 35. See the pattern? It counts by twos.
Answer:
The area of the sector (shaded section) is 29.51
.
Step-by-step explanation:
Area of a sector = (θ ÷ 360) ![\pi](https://tex.z-dn.net/?f=%5Cpi)
![r^{2}](https://tex.z-dn.net/?f=r%5E%7B2%7D)
where θ is the central angle of the sector, and r is the radius of the circle.
From the diagram give, diameter of the circle is 26 m. So that;
r = ![\frac{diameter}{2}](https://tex.z-dn.net/?f=%5Cfrac%7Bdiameter%7D%7B2%7D)
=
= 13 m
θ = 360 - (180 + 160)
= 360 - 340
= ![20^{o}](https://tex.z-dn.net/?f=20%5E%7Bo%7D)
Thus,
area of the given sector =
x
x ![(13)^{2}](https://tex.z-dn.net/?f=%2813%29%5E%7B2%7D)
=
x x
x 169
= 29.5079
The area of the sector (shaded section) is 29.51
.
Answer:
y = 2/3x - 1
Step-by-step explanation:
Find the slope:
2y = 3x - 5
2/2y = 3/2x - 5/2
y = 3/2x - 5/2
Slope is 3/2
In order for a line to be perpendicular the slope in the equation should be flipped. 3/2 becomes 2/3.
Perpendicular equation:
y = 2/3x + b
b is going to be equal to the y intercept of the point they gave us, so -1.
Answer: y = 2/3x - 1
The easiest way to find the expansion of the expression given would e to distribute. To distribute, you have to multiply each of the terms in the parentheses by 9. The expansion of the expression would be 9x + 18.
9 (x + 2)
9 · x = 9x
9 · 2 = 18
9x + 18
Hope this helps. Good luck! :)
Answer:
(x+9)(x+10)
Step-by-step explanation:
9*10=90
9+10=19