Answer:
-4a+22b
Step-by-step explanation:
Answer:
its B. A = 0t3 B = (–0.6t2) C = 18t D = (–8)
the next answer is D. 1.3^3 - 0.2t^2 - 6t - 8
Let x = cups of 11% wheat, and y = cups of 63% wheat
He wants 12 cups in total, so we need:
x + y = 12
These 12 cups need to have 50% wheat, which means we are looking at 12*.5 = 6 cups of wheat in total, so our second equation is:
.11x + .63y = 6
We have two equations and two variables. So we can solve by using any means you want. I used substitution:
x = 12 - y
.11(12-y) + .63y = 6
1.32 -.11y + .63y = 6
.52y = 4.68
y = 9
Which means x = 3
Thus, 3 cups of 11% and 9 cups of 63%.
Answer:
x = 159/23 = 6.913
Step-by-step explanation:
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Answer:
f(- 3) = 12
Step-by-step explanation:
Substitute x = - 3 into f(x) , that is
f(- 3) = (- 3)² - (- 3) = 9 + 3 = 12
