We have three pythagoras:
4² + y² = z²
16² + y² = x²
x² + z² = 20²
Now let's think:
4² + y² = z²
y² = z² - 4²
16² + y² = x²
16² + z² - 4² = x²
x² + z² = 20²
16² + z²- 4² + z² = 20²
2z² = 20² - 16² + 4²
2z² = (2.10)² - (2^4)² + (2²)²
2z² = 2².10² - 2^8 + 2^4
z² = 2.10² - 2^7 + 2^3
z² = 200 - 128 + 8
z² = 208 - 128
z² = 80
z = √80
80 | 2
40 | 2
20 | 2
10 | 2
5 | 5
1
80 = 5.2^4
So
√80 = 4√5
z = 4√5
Let A = {a, b, c}, B = {4, 5, 6}, and f = {(a, 6), (b, 4), (c, 6)}. Is f a function from A to B? Explain
Gennadij [26K]
Answer:
Yes
Step-by-step explanation:
Given
Required
Is f a function of A->B
f can be rewritten as
x --- y
a -- 6
b -- 4
c -- 6
The x column is regarded as the input while the y is the output
Notice that for every input, there is a corresponding output and no input points to multiple outputs.
i.e No value of x has more than 1 value of y
<em>Because of this singular reason; f is a function of A->B</em>
Answer:
the answer is 2ab²c
Step-by-step explanation:
hope it helps
Answer:
1.178511301978
Step-by-step explanation: