Answer:
21
first we begin from 1 to 100 we find 11 numbers contain 1 then we count 1s from 10 to 19 we get 9 numbers but there is an exciption in number 11 as it cotains 2 1s so thenumber of 1s is 21
Answer:
Step-by-step explanation:
![a+b =1\dfrac{3}{5} + (-2)\\\\=\dfrac{8}{5}-\dfrac{2*5}{1*5}\\\\=\dfrac{8-10}{5}\\\\\\=\dfrac{-2}{5}\\\\\\2-c = 2-[-7] = 2+7 = 9\\\\\\dfrac{- I a + b I}{2-c}=\dfrac{\dfrac{-2}{5}}{9}\\\\=\dfrac{-2}{5}*\dfrac{1}{9}\\\\=\dfrac{-2}{45}\\\\](https://tex.z-dn.net/?f=a%2Bb%20%3D1%5Cdfrac%7B3%7D%7B5%7D%20%2B%20%28-2%29%5C%5C%5C%5C%3D%5Cdfrac%7B8%7D%7B5%7D-%5Cdfrac%7B2%2A5%7D%7B1%2A5%7D%5C%5C%5C%5C%3D%5Cdfrac%7B8-10%7D%7B5%7D%5C%5C%5C%5C%5C%5C%3D%5Cdfrac%7B-2%7D%7B5%7D%5C%5C%5C%5C%5C%5C2-c%20%3D%202-%5B-7%5D%20%3D%202%2B7%20%3D%209%5C%5C%5C%5C%5C%5Cdfrac%7B-%20I%20a%20%2B%20b%20I%7D%7B2-c%7D%3D%5Cdfrac%7B%5Cdfrac%7B-2%7D%7B5%7D%7D%7B9%7D%5C%5C%5C%5C%3D%5Cdfrac%7B-2%7D%7B5%7D%2A%5Cdfrac%7B1%7D%7B9%7D%5C%5C%5C%5C%3D%5Cdfrac%7B-2%7D%7B45%7D%5C%5C%5C%5C)
Since the only exclusion from the range is y=0, vertically scaling the graph by a factor of 6 doesn't change the range. (0 is still 0)
The appropriate choice is ...
<span>B: The range of both f(x) and g(x) is all nonzero real numbers</span>
Do u still have this homework or is it old
Answer:
x₁ = - 4 + √31
x₂ = - 4 - √31
Step-by-step explanation:
x² + 8x = 15
x² + 8x - 15 = 0
x = [- 8 ± √8² - 4×1×(-15)]/(2×1)
x = (-8 ± 2√31)/2
x₁ = (-8 ± 2√31)/2
x₁ = - 4 + √31
x₂ = - 4 - √31
