Answer:
-6
(I don’t understand what you mean by on & 5 but..)
Step-by-step explanation:
The two negatives (the -(- ) cancel each other out and make a postive, so
-18 + 12 = -6
The nearest tenth of how fast a rover will hit Mars' surface after a bounce of 15 ft in height is 20.7ft/s.
<h3>What is the approximation about?</h3>
From the question:
Mars: F(x) = 2/3![\sqrt{64x}](https://tex.z-dn.net/?f=%5Csqrt%7B64x%7D)
Therefore, If x = 15
Then:
f (15) = 2/3 ![\sqrt[8]{15}](https://tex.z-dn.net/?f=%5Csqrt%5B8%5D%7B15%7D)
= 16/3![\sqrt{15}](https://tex.z-dn.net/?f=%5Csqrt%7B15%7D)
= 20.7ft/s
Hence, The nearest tenth of how fast a rover will hit Mars' surface after a bounce of 15 ft in height is 20.7ft/s.
Learn more about Estimation from
brainly.com/question/24592593
#SPJ1
Given :
The angle of depression is 30 degrees from the bottom of the boat to a
deep sea diver a the depth of 120 ft.
To Find :
The distance x the diver must swim up to the boat to the nearest foot.
Solution :
Let, distance between diver and boat is x.
So,
![sin\ 30^o=\dfrac{h}{x}\\\\x = \dfrac{120}{\dfrac{1}{2}}\\\\x = 240 \ ft](https://tex.z-dn.net/?f=sin%5C%2030%5Eo%3D%5Cdfrac%7Bh%7D%7Bx%7D%5C%5C%5C%5Cx%20%3D%20%5Cdfrac%7B120%7D%7B%5Cdfrac%7B1%7D%7B2%7D%7D%5C%5C%5C%5Cx%20%3D%20240%20%5C%20ft)
Therefore, distance the diver must swim up to the boat to the nearest foot is 240 foot.
Hence, this is the required solution.
ratio of boys : girls : all students
7 : 5 : 12
multiply all by 13
91 : 65 : 156
there are 65 girls
Answer:
Can you rewrite the question?
Step-by-step explanation: