Answer:
<h2> √3</h2>
Step-by-step explanation:
![\cos(30^o)=\dfrac{\sqrt3}2](https://tex.z-dn.net/?f=%5Ccos%2830%5Eo%29%3D%5Cdfrac%7B%5Csqrt3%7D2)
From triangle: ![\cos(30^o)=\dfrac x2](https://tex.z-dn.net/?f=%5Ccos%2830%5Eo%29%3D%5Cdfrac%20x2)
Therefore:
![\dfrac x2=\dfrac{\sqrt3}{2}\\\\x=\sqrt3](https://tex.z-dn.net/?f=%5Cdfrac%20x2%3D%5Cdfrac%7B%5Csqrt3%7D%7B2%7D%5C%5C%5C%5Cx%3D%5Csqrt3)
The number of situps form an AP with first term (a) = 17 and common difference (d) = 4
Tn = a + (n - 1)d
T12 = 17 + (12 - 1) x 4 = 17 + 11(4) = 17 + 44 = 61
Therefore, she will do 61 situps on day 12.
Answer:
See below
Step-by-step explanation:
You just need 1/4 of everything:
1/4 c peanut butter
1/4 c brown sugar
1/4 c gran sugar
1/4 c butter
1/2 egg
1/4 tsp baking soda
1/4 tsp baking powder
1/4 tsp vanilla
5/8 c flour
Actual length / shadow ratio is equal
Let the height of the building be x, then
36/28 = x/70
x = (36 x 70)/28 = 2,520/28 = 90.
Therefore, the height of the building is 90 feet.