Solve the problem.A painter leans a ladder against one wall of a house. The ladder is 26 ft long. The base of the ladder is 23 ft from the house. How high is the wall? Round approximations to the nearest tenth. 
23 ft
A. 6.1 ft
B. 24.5 ft
C. 73.5 ft
D. 12.1 ft
Answer: D
Mathematics
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Simplify the difference quotients 
and 
for the following function. Rationalize the numerator when necessary.f(x) = 
A. - 
; - 
B. - 
; - 
C. 
; 
D. 
; 
Mathematics
Add.40 + 800 + 90
A. 93 B. 830 C. 174 D. 930
Mathematics
Using synthetic division, determine whether the numbers are zeros of the polynomial.0, 2; f(x) = -x4 - 9x2 - 6x + 64
A. Yes; no B. No; no C. Yes; yes D. No; yes
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Factor completely.8s3 + 1
A. (2s + 1)(4s2 - 2s + 1) B. (2s + 1)(4s2 + 1) C. (2s - 1)(4s2 + 2s + 1) D. (8s + 1)(s2 - 2s + 1)
Mathematics